Municipal engineering foundation pit construction dust falling device

Abstract

The application relates to the technical field of foundation pit dust reduction, and discloses a municipal engineering foundation pit construction dust reduction device, which comprises a base plate, a gas cylinder is fixed at the top of the base plate, an output shaft of the gas cylinder is fixed with a guide rail table, a dust reduction assembly for shielding dust reduction is arranged on the guide rail table, two adjacent base plates are connected through air pipes in the length direction of the guide rail table, a flow guide pipe is fixed at the top of the air pipe, a motor is fixed at one end of the air pipe, and the output shaft of the motor penetrates through the air pipe. The municipal engineering foundation pit construction dust reduction device controls the lifting of the whole dust reduction assembly through the gas cylinder, so as to regulate and control the influence degree of external wind on the foundation pit. When the gas cylinder is ejected, the distance between the sky screen and the foundation pit is increased, ventilation is increased, when the gas cylinder is returned, the distance between the sky screen and the foundation pit is shortened, the ventilation volume is reduced, the pressure of external wind on dust in the foundation pit is reduced, the distance between the water mist and the return contact is shortened, and the dust reduction effect is improved.

Description

Technical Field

[0001] This invention relates to the field of dust suppression technology for foundation pits, specifically a dust suppression device for foundation pit construction in municipal engineering. Background Technology

[0002] During the excavation and construction of municipal engineering foundation pits, a large amount of dust is generated. In order to avoid the dust from affecting the surrounding environment, support pillars are usually set up at the edge of the foundation pit, and dust suppression canopies are then installed on the support pillars. Atomizing nozzles are usually installed below the dust suppression canopies. Through the combined effect of water mist and dust suppression canopies, the impact of dust on the surrounding environment is reduced.

[0003] Existing dust suppression canopies are usually driven by motors to be laid. When needed, they cover the entire pit, which reduces visible light above the pit, requiring additional lighting facilities to be turned on below the canopy. At the same time, it also reduces the ventilation of the pit. The water mist makes the pit too humid and stuffy, affecting the working environment of the workers. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dust suppression device for municipal engineering foundation pit construction, which solves the problems mentioned in the background section.

[0005] The present invention provides the following technical solution: a dust suppression device for foundation pit construction in municipal engineering, comprising a base plate, a cylinder fixed on the top of the base plate, a guide rail fixed on the output shaft of the cylinder, and a dust suppression component for shielding and suppressing dust on the guide rail.

[0006] With the length of the guide rail as a reference, two adjacent base plates are connected by a duct. A guide pipe is fixed to the top of the duct, and a motor is fixed to one end of the duct. The output shaft of the motor passes through the duct, and a fan blade roller is fixed to the output shaft of the motor. The fan blade roller is located inside the duct, and the end of the fan blade roller away from the motor is rotatably connected to the inner wall of the duct.

[0007] Optionally, there are four base plates and cylinders in total, and each base plate has an anchor rod fixed to its bottom.

[0008] Optionally, the dust suppression assembly includes a gear plate, which is fixed to one side of the top of the guide rail platform. A slide is slidably connected inside the top of the guide rail platform, and a vertical rod is fixed to the top of the slide. A canopy is fixed to the surface of the vertical rod.

[0009] With the width of the canopy as a reference, two opposing sliding platforms are connected by a water storage pipe. A water supply pipe assembly is fixed to the surface of the water storage pipe, and an atomizing nozzle is fixed to the bottom of the water storage pipe.

[0010] Optionally, with the length of the guide rail as a reference, adjacent slides are hinged together by a hinge group, and the slide near the water inlet of the water supply pipe group has a motor fixed inside, and the motor's gear disk meshes with the gear plate.

[0011] Optionally, a rubber gasket is fixed to the surface of the atomizing nozzle, and a fixing bracket is fixed to the surface of the rubber gasket.

[0012] Optionally, the two ends of the fixing frame are fixed with limit plates, and the two sides of the limit plates are inclined.

[0013] Optionally, a guide rail frame is fixed on the opposite side of the guide rail platform, and a slot is provided on the top of the guide rail frame. A sealing plate is slidably connected inside the slot, and the limiting plate is slidably connected to the guide rail frame.

[0014] Optionally, the guide rail platform has a ventilation pipe inside, an air gathering port at the bottom of the guide rail platform, and the ventilation pipe and the air gathering port are connected to each other. The air gathering port is trapezoidal in shape. A ventilation port is provided on the opposite side of the guide rail platform. An exhaust port is provided at the bottom of the fixed frame. The ventilation port is connected to the cylinder.

[0015] Optionally, a frame is fixed to one side of the top of the air duct, and a flip frame is rotatably connected inside the frame. A reflective film is bonded to the top and bottom of the flip frame, and a linkage frame is hinged to both ends of the flip frame. A magnet is embedded in the top of the linkage frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The dust suppression device for the foundation pit construction of this municipal engineering project uses a cylinder to control the lifting and lowering of the entire dust suppression component, thereby regulating the impact of external wind on the foundation pit. When the cylinder extends, the distance between the canopy and the foundation pit increases, increasing ventilation. When the cylinder returns, the distance between the canopy and the foundation pit shortens, reducing ventilation and thus reducing the pressure of external wind on dust in the foundation pit. At the same time, it shortens the distance between the water mist and the return contact, improving the dust suppression effect.

[0018] 2. The dust suppression device for the foundation pit construction of this municipal engineering project generates wind force through the rotation of the fan blade roller during the cylinder return stroke. This wind force is compressed through the guide pipe and the air gathering port, forming an air curtain below the air gathering port. This further reduces the impact of external wind force on dust in the foundation pit and reduces the probability of dust leakage. The wind force entering the ventilation pipe through the air gathering port eventually enters the interior of the fixed frame through the ventilation port and is blown out through the exhaust port. This increases the air circulation speed in the foundation pit and increases the thrust on the water mist, accelerating the efficiency of water mist contact and dust suppression during the return stroke. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a front view of the dust suppression component of the present invention;

[0021] Figure 3 This is a schematic diagram of the water delivery pipe assembly of the present invention;

[0022] Figure 4 This is a cross-sectional view of the structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the air duct and the tilting frame of the present invention;

[0024] Figure 6 This is a schematic diagram of the guide rail platform of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the fixing frame of the present invention;

[0026] Figure 8 This is a cross-sectional view of the duct structure of the present invention.

[0027] In the diagram: 1. Base plate; 11. Anchor rod; 2. Cylinder; 21. Guide rail platform; 3. Gear plate; 31. Slide table; 32. Upright pole; 33. Canopy; 34. Hinge assembly; 35. Motor; 4. Water storage pipe; 41. Water supply pipe assembly; 42. Atomizing nozzle; 43. Rubber gasket ring; 5. Fixing frame; 51. Limiting plate; 6. Guide rail frame; 61. Slot; 62. Sealing plate; 7. Air duct; 71. Guide pipe; 72. Motor; 73. Fan blade roller; 8. Ventilation pipe; 81. Air concentrator; 82. Ventilation outlet; 83. Exhaust outlet; 9. Frame; 91. Flip frame; 92. Reflective film; 93. Linkage frame; 94. Magnet. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example 1: Please refer to Figure 1-8A dust suppression device for municipal engineering foundation pit construction includes a base plate 1, a cylinder 2 fixed on the top of the base plate 1, a guide rail 21 fixed on the output shaft of the cylinder 2, a dust suppression component for shielding and suppressing dust on the guide rail 21, and a duct 7 connecting two adjacent base plates 1 with the length direction of the guide rail 21 as a reference. A guide pipe 71 is fixed on the top of the duct 7, a motor 72 is fixed at one end of the duct 7, the output shaft of the motor 72 passes through the duct 7, and a fan blade roller 73 is fixed on the output shaft of the motor 72. The fan blade roller 73 is located inside the duct 7, and the end of the fan blade roller 73 away from the motor 72 is rotatably connected to the inner wall of the duct 7.

[0030] There are four base plates 1 and cylinders 2. Anchor rods 11 are fixed to the bottom of the base plate 1. The dust suppression component includes a gear plate 3. The gear plate 3 is fixed to one side of the top of the guide rail platform 21. A slide table 31 is slidably connected inside the top of the guide rail platform 21. A vertical rod 32 is fixed to the top of the slide table 31. A canopy 33 is fixed to the surface of the vertical rod 32.

[0031] Based on the width direction of the canopy 33, two opposite sliding tables 31 are connected by a water storage pipe 4. A water supply pipe assembly 41 is fixed on the surface of the water storage pipe 4, and an atomizing nozzle 42 is fixed at the bottom of the water storage pipe 4. Based on the length direction of the guide rail 21, adjacent sliding tables 31 are hinged together by a hinge assembly 34. A motor 35 is fixed inside the sliding table 31 near the water inlet of the water supply pipe assembly 41, and the gear disk of the motor 35 meshes with the gear plate 3.

[0032] In the specific operation process, when the foundation pit needs dust suppression, the motor 35 is first started by the controller, which makes the gear disk of the motor 35 rotate. Since the gear plate 3 meshes with the gear disk of the motor 35 and the gear plate 3 is fixed, when the motor 35 starts, the motor 35 drives the two slides 31 near the water inlet end of the water supply pipe group 41 to slide inside the top of the guide rail platform 21. Then, the two slides 31 drive the hinge group 34 to stretch. At the same time, under the hinge action of the hinge group 34, each slide 31 slides inside the top of the guide rail platform 21, which causes the uprights 32 at the top of each slide 31 to shift. The shifted uprights 32 stretch the canopy 33, so that the canopy 33 is spread out, thus forming a shield above the foundation pit, thereby achieving the initial dust suppression protection of the foundation pit.

[0033] Subsequently, the water source is connected to the water supply pipe assembly 41, and clean water is transported to the interior of each water storage pipe 4 through the water supply pipe assembly 41. Then, the atomizing nozzle 42 is activated by the controller, and then the atomizing nozzle 42 can spray the area below the canopy 33, that is, the pit, through the atomizing nozzle 42. The water mist adsorbs the dust, thereby achieving the effect of dust reduction. This is the conventional dust reduction method of the canopy 33 and atomizing nozzle 42 in the prior art, and will not be described in detail in this invention.

[0034] Furthermore, when the light is insufficient, the controller can activate cylinder 2, causing cylinder 2 to extend, which in turn causes the guide rail 21 to extend upward along the vertical direction of cylinder 2. This causes the guide rail 21 to move the dust suppression components upward as a whole, that is, the canopy 33 and the atomizing nozzle 42 all move upward. After the canopy 33 moves upward, the distance between the canopy 33 and the foundation pit increases, allowing more external light to penetrate the foundation pit. At the same time, as the distance between the canopy 33 and the foundation pit increases, the ventilation of the foundation pit is also enhanced, reducing the stuffiness inside the foundation pit and improving the working environment for workers.

[0035] When the wind around the foundation pit is too strong and has too great an impact on the dust inside the pit, the controller controls the return stroke of cylinder 2, which causes the guide rail platform 21 to drive the entire dust suppression component to descend. This shortens the distance between the canopy 33 and the atomizing nozzle 42 and the foundation pit, thereby reducing the flow of external wind into the pit, reducing the dust entrainment effect, and reducing the probability that external wind will blow the dust out of the foundation pit. This increases the time that dust stays in the foundation pit, which in turn increases the contact time and area between the water mist sprayed by the atomizing nozzle 42 and the dust, thereby improving the dust suppression effect of the foundation pit.

[0036] Meanwhile, as the distance between the atomizing nozzle 42 and the foundation pit is shortened, the distance between the water mist sprayed by the atomizing nozzle 42 and the dust is also shortened, allowing the water mist to contact and adsorb the dust in the foundation pit more quickly, thereby improving the efficiency of water mist dust suppression. At the same time, as the distance between the canopy 33 and the foundation pit is shortened, the center of gravity of the canopy 33 is lowered, which improves the wind resistance of the canopy 33 in windy weather, reduces the pressure of the wind blowing the canopy 33, thus protecting the canopy 33, extending the service life of the canopy 33, and reducing the probability of the canopy 33 being damaged or torn by wind.

[0037] It should be noted that all the devices of the present invention are controlled by a controller, and the length of the guide rail 21 can be customized according to the length of the foundation pit, and the number of slides 31 can also be customized according to the requirements. Among them, the slide 31 at the end away from the water inlet of the water supply pipe group 41 is fixed inside the top of the guide rail 21, while the bottom of the remaining slides 31 is equipped with rollers, which improves the smoothness of the slides 31 moving inside the top of the guide rail 21. The motor 35 is fixedly installed inside the slide 31 at the end near the water inlet of the water supply pipe group 41, and the various water storage pipes 4 are connected through two water supply pipe groups 41.

[0038] Example 2: A rubber gasket ring 43 is fixed to the surface of the atomizing nozzle 42, and a fixing frame 5 is fixed to the surface of the rubber gasket ring 43. Limiting plates 51 are fixed to both ends of the fixing frame 5. The two sides of the limiting plates 51 are inclined. A guide rail frame 6 is fixed to the opposite side of the guide rail table 21. A slot 61 is opened on the top of the guide rail frame 6. A sealing plate 62 is slidably connected inside the slot 61. The limiting plate 51 is slidably connected to the guide rail frame 6.

[0039] The guide rail platform 21 has a ventilation pipe 8 inside, and an air gathering port 81 is opened at the bottom of the guide rail platform 21. The ventilation pipe 8 and the air gathering port 81 are connected to each other. The air gathering port 81 is trapezoidal. A ventilation port 82 is opened on the opposite side of the guide rail platform 21. An exhaust port 83 is opened at the bottom of the fixed frame 5. The ventilation port 82 is connected to the cylinder 2.

[0040] Specifically, based on Embodiment 1, when the motor 35 starts and drives the slide table 31 and the upright 32 to stretch the canopy 33, the slide table 31 synchronously drives the water storage pipe 4 to move, which in turn causes the water storage pipe 4 to drive the atomizing nozzle 42 to move, and the atomizing nozzle 42 drives the rubber pad ring 43 to move synchronously, and the rubber pad ring 43 drives the fixing frame 5 to move synchronously. Since the limiting plate 51 is slidably connected to the guide rail frame 6, the fixing frame 5 then drives the limiting plate 51 to slide inside the guide rail frame 6.

[0041] During the sliding process, the inclined side of the limiting plate 51 contacts the sealing plate 62, thereby pushing the sealing plate 62 to slide inside the slot 61, thus preventing the sealing plate 62 from blocking the limiting plate 51. After the skylight 33 is fully extended, each hinge group 34 is extended to its maximum length, that is, each slide 31 reaches the designated position, that is, the water storage pipe 4 drives the fixing frame 5 and the limiting plate 51 to reach the designated position, thereby allowing the fixing frame 5 to connect with the ventilation pipe 8 through the ventilation port 82.

[0042] When the vent 82 is connected to the ventilation pipe 8, the motor 72 can be started by the controller, so that the motor 72 drives the fan blade roller 73 to rotate inside the ventilation pipe 7 and generate wind. The generated wind is guided and compressed by the guide pipe 71 and blown towards the air gathering port 81. It enters the interior of the ventilation pipe 8 through the air gathering port 81, and then the wind inside the ventilation pipe 8 enters the interior of the fixed frame 5 through the vent 82. Finally, it blows vertically downwards towards the foundation pit through the exhaust port 83. When the wind blows out through the exhaust port 83, it can generate thrust on the water mist sprayed by the atomizing nozzle 42 below, so that the water mist comes into contact with the dust in the foundation pit more quickly, thereby improving the dust suppression effect in the foundation pit.

[0043] Furthermore, when the motor 72 starts, the airflow generated by the rotation of the fan blade roller 73 is blown towards the air collection port 81 through the guide pipe 71. As the airflow blows from the guide pipe 71 to the air collection port 81, an air curtain is formed below the air collection port 81. The air curtain can block the probability of dust in the foundation pit leaking and floating to the outside, further increasing the time that dust stays in the foundation pit, thereby further improving the dust suppression effect of the water mist sprayed by the atomizing nozzle 42.

[0044] At the same time, once the wind curtain is formed, it can offset some of the external wind force, reducing the flow of external wind into the foundation pit. This reduces the probability that external wind will carry dust outside the foundation pit, further increasing the chances of dust remaining inside the foundation pit and being subjected to water mist dust suppression.

[0045] It should be noted that the guide pipe 71 is located directly below the air concentrator 81, while the nozzle of the atomizing nozzle 42 is located below the exhaust port 83.

[0046] Example 3: A frame 9 is fixed on one side of the top of the air duct 7. A flip frame 91 is rotatably connected inside the frame 9. A reflective film 92 is bonded to the top and bottom of the flip frame 91. A linkage frame 93 is hinged to both ends of the flip frame 91. A magnet 94 is embedded in the top of the linkage frame 93.

[0047] Specifically, based on Embodiment 1 and Embodiment 2, when the cylinder 2 is in the initial state, that is, when the distance between the canopy 33 and the foundation pit is the shortest, the guide rail 21 and the magnet 94 are in an adsorption state, and at this time the shading rate of the canopy 33 on the foundation pit reaches the maximum, that is, the irradiation area of ​​external light entering the canopy 33 is the minimum.

[0048] Then, the controller controls the cylinder 2 to push out slightly. During the slight push-out of the cylinder 2, the guide rail 21 is moved slightly upward. During the upward movement, the guide rail 21 is attracted by the magnet 94 to the bottom of the guide rail 21, causing the guide rail 21 to attract the magnet 94 and the linkage frame 93 to move upward. During the upward movement, the linkage frame 93 drives each flipping frame 91 to flip, so that the angle of sunlight shining on the flipping frame 91 changes. Under the action of the adjacent reflective films 92, the light is refracted into the pit, thereby increasing the brightness in the pit and improving the working environment for workers.

[0049] At the same time, as the sun rises in the east and sets in the west, the angle of illumination also changes. At this time, the angle of the cylinder 2's push-out and return stroke can be finely adjusted by the controller, so that the tilting frame 91 and the reflective film 92 change with the change of illumination, thereby adjusting the position of the light shining into the pit and further increasing the brightness of the working environment in the pit.

[0050] It should be noted that, for reference Figure 4The bottom of the guide rail platform 21 has an air inlet 81, and the linkage frame 93 is located below the guide rail platform 21 and on one side of the air inlet 81. Here, when the magnet 94 carries the linkage frame 93 and moves upward with the guide rail platform 21, it is limited by the hinge of each flipping frame 91. The magnet 94 carries the linkage frame 93 and moves horizontally at the bottom of the guide rail platform 21, but still maintains the adsorption state on the bottom of the guide rail platform 21.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A municipal engineering foundation pit construction dust falling device, comprising a base plate (1), characterized in that: The top of the base plate (1) is fixed with a cylinder (2), the output shaft of the cylinder (2) is fixed with a guide rail table (21), the guide rail table (21) is provided with a dust falling assembly for shielding dust falling. The inner side of the top end of the guide rail table (21) is slidably connected with a sliding table (31), the top of the sliding table (31) is fixed with a vertical rod (32), the surface of the vertical rod (32) is fixed with a sky curtain (33), and the width direction of the sky curtain (33) is taken as the reference, the opposite two sliding tables (31) are connected through a water storage pipe (4), the surface of the water storage pipe (4) is fixed with a water pipe group (41), the bottom of the water storage pipe (4) is fixed with an atomizing nozzle (42), the surface of the atomizing nozzle (42) is fixed with a rubber gasket ring (43), and the surface of the rubber gasket ring (43) is fixed with a fixing frame (5). The length direction of the guide rail table (21) is taken as the reference, and the two adjacent base plates (1) are connected through an air pipe (7), the top of the air pipe (7) is fixed with a flow guide pipe (71), one end of the air pipe (7) is fixed with a motor (72), the output shaft of the motor (72) penetrates through the air pipe (7), the output shaft of the motor (72) is fixed with a fan roller (73), the fan roller (73) is located in the inner side of the air pipe (7), and one end, away from the motor (72), of the fan roller (73) is rotatably connected with the inner wall of the air pipe (7). The inner side of the guide rail table (21) is provided with a ventilation pipe (8), the bottom of the guide rail table (21) is provided with a wind collecting opening (81), and the ventilation pipe (8) and the wind collecting opening (81) are in communication, the wind collecting opening (81) is provided in a trapezoidal shape, the flow guide pipe (71) is located directly below the wind collecting opening (81), and the opposite side of the guide rail table (21) is provided with a ventilation opening (82), the bottom of the fixing frame (5) is provided with an air outlet (83), and the ventilation opening (82) is in communication with the cylinder (2).

2. The municipal engineering foundation pit construction dust falling device according to claim 1, characterized in that: The base plate (1) and the cylinder (2) are provided with four, and the bottom of the base plate (1) is fixed with an anchor rod (11).

3. The municipal engineering foundation pit construction dust falling device according to claim 1, characterized in that: The dust falling assembly comprises a gear plate (3), and the gear plate (3) is fixed on one side of the top of the guide rail table (21).

4. The municipal engineering foundation pit construction dust falling device according to claim 3, characterized in that: The length direction of the guide rail table (21) is taken as the reference, the adjacent sliding tables (31) are hingedly connected through a hinge group (34), and the inner side of the sliding table (31) near the water inlet end of the water pipe group (41) is fixed with a motor (35), and the gear plate of the motor (35) is engaged with the gear plate (3).

5. The municipal engineering foundation pit construction dust falling device according to claim 1, characterized in that: The two ends of the fixing frame (5) are fixed with a limiting plate (51), and the two sides of the limiting plate (51) are provided in an inclined manner.

6. The municipal engineering foundation pit construction dust falling device according to claim 5, characterized in that: The opposite side of the guide rail table (21) is fixed with a guide rail frame (6), the top of the guide rail frame (6) is provided with a slot (61), the inner side of the slot (61) is slidably connected with a sealing plate (62), and the limiting plate (51) is slidably connected with the guide rail frame (6).

7. The municipal engineering foundation pit construction dust falling device according to claim 1, characterized in that: One side of the top of the air pipe (7) is fixed with a frame (9), the inside of the frame (9) is rotationally connected with a turnover frame (91), the top and bottom of the turnover frame (91) are bonded with reflective films (92), both ends of the turnover frame (91) are hingedly connected with linkage frames (93), and the top of the linkage frame (93) is inlaid with a magnet (94).

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