Foundation pit excavation construction dust suppression equipment for stratum foundation pit construction

Abstract

The invention discloses foundation pit excavation construction dust suppression equipment for stratum foundation pit construction, and relates to the technical field of stratum foundation pit construction.The foundation pit excavation construction dust suppression equipment for stratum foundation pit construction comprises a moving base, a water tank is fixed to the top of the moving base, and a water pump is fixed to the inner wall of the water tank; a water pipe is fixed to the top output end of the water pump, and a supporting frame is fixed to the top of the water tank. According to the foundation pit excavation construction dust suppression equipment for stratum foundation pit construction, when spraying operation is not carried out, a net plate is not impacted by water flow, through cooperation of a connecting spring, the connecting spring can drive the net plate to reset, when the net plate is reset, an inclined face of an inclined face block is not extruded, and due to the fact that a reset spring is in a stretching state, the net plate is prevented from being damaged. And a reset spring can drive an L-shaped block to move downwards, a baffle is driven to shield the spray head, and the problem that when the spray head is not used, a large amount of dust easily falls on the spray head to block the spray head is solved.

Description

Technical Field

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

[0002] Foundation pit engineering refers to the measures taken to ensure the safety and stability of underground spaces created by excavation during underground structure construction, including retaining structures, groundwater control, and environmental protection. Foundation pit engineering is a systematic project integrating geological engineering, geotechnical engineering, structural engineering, and geotechnical testing technology. Its main contents include: engineering survey, support structure design and construction, earthwork excavation and backfilling, groundwater control, information-based construction, and surrounding environmental protection. The simplest and most economical method for foundation pit construction is wide-slope excavation, but this is often limited by site conditions and the surrounding environment. Therefore, a support system needs to be designed to ensure smooth construction and better protect the surrounding environment. During foundation pit construction, a large amount of dust is generated, necessitating dust suppression equipment for dust removal.

[0003] Existing dust suppression equipment for foundation pit construction lacks protective nozzles during dust removal operations. This results in a large amount of dust and other impurities accumulating on the nozzles when not in use, causing blockages and affecting the efficiency of subsequent dust removal. Therefore, a new dust suppression equipment for foundation pit construction is proposed. Summary of the Invention

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

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dust suppression device for foundation pit excavation, comprising a movable base, a water tank fixed to the top of the movable base, a water pump fixed to the inner wall of the water tank, a water pipe fixed to the top output end of the water pump, a support frame fixed to the top of the water tank, a connecting pipe fixed to the top of the support frame, a water pipe fixedly connected to the end of the water pipe away from the water pump, and a nozzle fixed to the side of the connecting pipe away from the water pipe. By activating the water pump, water in the water tank can be drawn out and sprayed out through the nozzle. A shielding device is provided on the connecting pipe to protect the nozzle, and an auxiliary device is provided on the nozzle to reuse the water dripping from the nozzle. The shielding device includes a mesh plate, an inclined block, a connecting spring, an L-shaped block, a return spring, a baffle, a motor, a control module, an elastic switch, a fixed frame, a rotating rod, a pressing rod, a moving frame, a connecting rod, a connecting block, an auxiliary rod, and a swing block. The mesh plate is slidably installed in the connecting pipe. One side of the connecting spring is fixed to the inner wall of the connecting pipe, and the other side of the connecting spring is fixed to the side wall of the mesh plate. When water flows through the connecting pipe, it impacts the mesh plate, causing it to move under pressure and compressing the connecting spring. The inclined block passes through the top of the connecting pipe and is slidably connected at the penetration point. The L-shaped block is fixed to the top of the inclined block. The top of the return spring is fixed to the bottom of the L-shaped block, and the bottom of the return spring is fixed to the top of the connecting pipe. The baffle is fixed to the bottom of the L-shaped block, and the fixed frame is fixed to the top of the nozzle. When the mesh plate moves, it presses against the inclined surface of the inclined block, causing the inclined block and the L-shaped block to move upward.

[0006] According to the above technical solution, the motor is fixed to the top of the L-shaped block, and a control module is fixed to the outer wall of the motor. A flexible switch is installed on the control module, and the flexible switch is electrically connected to the control module. The control module is also electrically connected to the motor. A rotating rod is fixed to the bottom output end of the motor, and a pressing rod is fixed to the bottom of the rotating rod. The moving frame passes through the L-shaped block and is slidably connected at the point of penetration. The bottom outer wall of the pressing rod is in contact with the inner side of the moving frame. When the L-shaped block moves upward, the flexible switch is pressed against the inner side of the fixed frame, which opens the motor, causing the rotating rod to rotate and drive the pressing rod to rotate within the moving frame, thus pressing the moving frame back and forth.

[0007] According to the above technical solution, the swing block is rotatably installed at the bottom of the baffle, one end of the connecting rod is fixed to the side wall of the moving frame, the other end of the connecting rod is fixed to a connecting block, the auxiliary rod is fixed to the bottom of the connecting block, and the outer wall of the auxiliary rod is in contact with the top inner side of the swing block.

[0008] According to the above technical solution, the auxiliary device includes a water receiving box, a transmission block, a connecting block, a transmission spring, a support block, a hinge rod, a slider, an L-shaped support block, and a striking block; the water receiving box is fixed to the bottom of the nozzle, the transmission block is slidably installed on the top of the nozzle, the connecting block is fixed to the side wall of the transmission block, and the support block is fixed to the top of the nozzle.

[0009] According to the above technical solution, one side of the transmission spring is fixed to the side wall of the support block, and the other side of the transmission spring is fixed to the side wall of the connecting block.

[0010] According to the above technical solution, the slider is slidably mounted on the top of the nozzle, one end of the hinge rod is hinged to the side wall of the slider, the other end of the hinge rod is hinged to the side wall of the connecting block, the L-shaped support block is fixed to the side wall of the slider, and the striking block is fixed to the bottom of the L-shaped support block. By moving the moving frame back and forth, the transmission block will move, thereby enabling the connecting block to move back and forth, so that the connecting block can press the hinge rod, which can drive the slider to move, and thus the striking block can move.

[0011] According to the above technical solution, the device further includes a dispersing device, which is located at the bottom of the nozzle. The dispersing device includes a through-hole pipe, a water outlet pipe, a bending block, a rack, a gear, and a dispersing plate. The through-hole pipe passes through the bottom of the water receiving box and is rotatably connected at the through-hole. The water outlet pipe is fixed to the outer wall of the through-hole pipe and is connected to the through-hole pipe. When the connecting block moves back and forth, it can drive the bending block to move back and forth, so that the bending block can drive the rack to move, so that the rack can move left and right on the gear, so that the gear can rotate back and forth.

[0012] According to the above technical solution, the gear is fixed to the outer wall of the through-hole pipe, the bending block is fixed to the top of the connecting block, the rack is fixed to the end of the bending block, the rack meshes with the outer wall of the gear, and the disintegrating plate is fixed to the outer wall of the through-hole pipe.

[0013] This invention provides a dust suppression device for foundation pit excavation construction. It has the following beneficial effects: 1. This invention, by setting up a shielding device, prevents the screen plate from being impacted by water flow when spraying is not in operation. Through the cooperation of the connecting spring, the screen plate can be reset, and when the screen plate resets, it will not compress the inclined surface of the inclined block. Because the reset spring is in a stretched state, it can move the L-shaped block downwards, causing the baffle to shield the nozzle, thus solving the problem of dust accumulating and clogging the nozzle when it is not in use. When spraying is required, the water flow impacts the screen plate, causing it to move. Through the cooperation of the inclined block and the L-shaped block, the baffle can move upwards without obstructing the nozzle, aligning the swing block with the nozzle. Simultaneously, when the L-shaped block moves upwards, the elastic switch is pressed against the inside of the fixed frame, activating the motor. Through the cooperation of the rotating rod, pressing rod, moving frame, connecting rod, connecting block, and auxiliary rod, the auxiliary rod can press the swing block back and forth at the nozzle, thus widening the spraying range.

[0014] 2. This invention, by setting up an auxiliary device, includes a water collection box at the bottom of the nozzle to collect dripping water from the nozzle, preventing water waste. Furthermore, when the squeezing rod rotates within the moving frame, the frame moves left and right, causing the squeezing transmission block to move back and forth, which in turn moves the connecting block back and forth. Through the cooperation of the hinge rod, slider, and L-shaped support block, the striking block strikes the back of the nozzle, accelerating the shedding of water droplets. This solves the problem of a large amount of water droplets adhering to the nozzle, which interferes with the spray angle and droplet distribution, leading to uneven spraying and affecting dust removal efficiency.

[0015] 3. This invention, by incorporating a dispersing device, allows the rack to move back and forth on a gear as the connecting blocks move, causing the gear to rotate. This, in turn, drives the dispersing plate to rotate, solving the problem of excessively large water jets from the nozzles quickly falling off and reducing dust removal efficiency. The rotation of the dispersing plate breaks up larger water jets into smaller droplets, thus improving dust removal efficiency. Furthermore, the water outlet pipe allows water collected in the water collection box to flow out through the through-hole pipe and onto the rotating dispersing plate for further dust removal. This allows for the reuse of collected water for dust removal, achieving a water-saving effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a partial structural diagram of the present invention; Figure 5 This is a partial cross-sectional view of the present invention; Figure 6 For the present invention Figure 5 Enlarged schematic diagram of structure A; Figure 7 This is a schematic diagram of the dispersing device of the present invention; Figure 8 This is a schematic diagram of part of the dispersing device of the present invention.

[0017] In the diagram: 1. Movable base; 2. Water tank; 3. Water pump; 4. Support frame; 5. Connecting pipe; 6. Water pipe; 71. Mesh plate; 72. Connecting spring; 73. Inclined block; 74. L-shaped block; 75. Return spring; 76. Baffle; 77. Swinging block; 78. Motor; 79. Control module; 710. Flexible switch; 711. Fixed frame; 712. Rotating rod; 713. Pressing rod; 714. 715. Moving frame; 716. Connecting block; 717. Auxiliary rod; 718. Connecting rod; 81. Water receiving box; 82. Transmission block; 83. Connecting block; 84. Support block; 85. Transmission spring; 86. Slider; 87. Hinge rod; 88. L-shaped support block; 89. Striking block; 91. Bending block; 92. Rack; 93. Through-hole pipe; 94. Gear; 95. Dispersing plate; 96. Water outlet pipe; 10. Nozzle. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-8 One embodiment of the present invention is as follows: a dust suppression device for foundation pit excavation construction, comprising a movable base 1, a water tank 2 fixed to the top of the movable base 1, a water pump 3 fixed to the inner wall of the water tank 2, a water pipe 6 fixed to the top output end of the water pump 3, a support frame 4 fixed to the top of the water tank 2, a connecting pipe 5 fixed to the top of the support frame 4, a water pipe 6 being fixedly connected to the connecting pipe 5 at the end away from the water pump 3, and a nozzle 10 fixed to the side of the connecting pipe 5 away from the water pipe 6. When the water pump 3 is started, water in the water tank 2 can be discharged from the water pipe 6 and then discharged from the nozzle 10 for dust suppression; a shielding device for protecting the nozzle 10 is provided on the connecting pipe 5. The shielding device includes a mesh plate 71, an inclined block 73, a connecting spring 72, an L-shaped block 74, a return spring 75, a baffle 76, a motor 78, a control module 79, an elastic switch 710, a fixed frame 711, a rotating rod 712, a pressing rod 713, a moving frame 714, a connecting rod 717, a connecting block 715, an auxiliary rod 716, and a swing block 77. The mesh plate 71 is slidably installed in the connecting pipe 5. One side of the connecting spring 72 is fixed to the inner wall of the connecting pipe 5, and the other side of the connecting spring 72 is fixed to the side wall of the mesh plate 71. The inclined block 73 passes through the top of the connecting pipe 5 and is slidably connected at the penetration point. The L-shaped block 74 is fixed to the top of the inclined block 73. The top of the return spring 75 is fixed to the bottom of the L-shaped block 74, and the bottom of the return spring 75 is fixed to the top of the connecting pipe 5. The baffle 76 is fixed to the bottom of the L-shaped block 74. The fixed frame 711 is fixed to the spray... At the top of the head 10, the motor 78 is fixed to the top of the L-shaped block 74. The outer wall of the motor 78 is fixed with a control module 79. The control module 79 is equipped with a flexible switch 710. The flexible switch 710 is electrically connected to the control module 79. The control module 79 is electrically connected to the motor 78. The bottom output end of the motor 78 is fixed with a rotating rod 712. The bottom of the rotating rod 712 is fixed with a pressing rod 713. The moving frame 714 passes through the L-shaped block 74 and is slidably connected at the passage. The bottom outer wall of the pressing rod 713 is in contact with the inner side of the moving frame 714. The swing block 77 is rotatably installed at the bottom of the baffle 76. One end of the connecting rod 717 is fixed to the side wall of the moving frame 714. The other end of the connecting rod 717 is fixed with a connecting block 715. The auxiliary rod 716 is fixed to the bottom of the connecting block 715. The outer wall of the auxiliary rod 716 is in contact with the top inner side of the swing block 77.

[0020] When spraying is not in use, the screen plate 71 is not impacted by the water flow. With the cooperation of the connecting spring 72, the connecting spring 72 can drive the screen plate 71 to reset. When the screen plate 71 resets, it will not squeeze the inclined surface of the inclined block 73. Because the reset spring 75 is in a stretched state, the reset spring 75 can drive the L-shaped block 74 to move downward, and drive the baffle 76 to block the nozzle 10. This solves the problem that the nozzle 10 is exposed and easily gets clogged by a lot of dust when it is not in use. When spraying is required, the water flow impacts the screen 71 and causes it to move. With the cooperation of the inclined block 73 and the L-shaped block 74, the baffle 76 can move upward to avoid blocking the nozzle 10, and the swing block 77 can be aligned with the nozzle 10. When the L-shaped block 74 moves upward, the elastic switch 710 is pressed against the inside of the fixed frame 711, which turns on the motor 78. Through the cooperation of the rotating rod 712, the pressing rod 713, the moving frame 714, the connecting rod 717, the connecting block 715 and the auxiliary rod 716, the auxiliary rod 716 can press the swing block 77 back and forth to swing, thereby making the spraying range wider.

[0021] In this embodiment, during operation: when dust removal is required, the equipment is moved to the location where dust removal is needed. The water pump 3 is activated, drawing water from the water tank 2 and directing it into the water pipe 6, then into the connecting pipe 5. The water flow impacts the mesh plate 71, causing it to move under pressure. This compresses the connecting spring 72. As the mesh plate 71 moves, it presses against the inclined surface of the inclined block 73, causing it to move upwards. This pressure moves the L-shaped block 74 upwards, stretching the return spring 75. Simultaneously, the upward movement of the L-shaped block 74 moves the baffle 76 upwards, preventing the baffle 76 from moving upwards. The nozzle 10 is blocked, allowing water to spray out for dust removal. When spraying is not needed, the water pump 3 is turned off, preventing water from impacting the screen plate 71 and reducing pressure on it. The spring coefficient of the connecting spring 72 is five times that of the return spring 75, allowing the connecting spring 72 to reset the screen plate 71. When the screen plate 71 resets, it does not compress the inclined block 73. Because the return spring 75 is in a stretched state, it can move the L-shaped block 74 downward. When the L-shaped block 74 moves downward, it can move the baffle 76 downward to block the nozzle 10 and protect it.

[0022] When the L-shaped block 74 moves the baffle 76 upward, it aligns the swing block 77 with the nozzle 10. Simultaneously, the upward movement of the L-shaped block 74 also moves the motor 78 upward, causing the elastic switch 710 on the motor 78 to press against the inside of the fixed frame 711. This pressure opens the elastic switch 710, transmitting an electrical signal to the control module 79. The control module 79 then starts the motor 78. When the motor 78 starts, it rotates the rotating rod 712, which in turn rotates the pressing rod 713. This pressing rod 713 then presses against the inside of the moving frame 714. When the moving frame 714 is pressed, it can move back and forth to the left and right. When the moving frame 714 moves left and right, it drives the connecting rod 717 to move back and forth, causing the connecting block 715 to move left and right. This causes the auxiliary rod 716 to move back and forth on the top inner side of the swing block 77, allowing the auxiliary rod 716 to squeeze the swing block 77 to swing back and forth, thus diffusing the water mist sprayed from the nozzle 10 and improving the dust removal effect. When spraying is not in operation, the L-shaped block 74 moves downward to reset, thereby driving the motor 78 to reset downward. This causes the elastic switch 710 to be free from pressure and reset, stopping the elastic switch 710 from sending electrical signals to the control module 79. The control module 79 then controls the motor 78 to shut down, thus stopping the rotation of the rotating rod 712.

[0023] Please see Figure 1 - Figure 8 Based on the above embodiments, in another embodiment of the present invention, the nozzle 10 is provided with an auxiliary device for reusing water dripping from the nozzle 10. The auxiliary device includes a water receiving box 81, a transmission block 82, a connecting block 83, a transmission spring 85, a support block 84, a hinge rod 87, a slider 86, an L-shaped support block 88, and a striking block 89. The water receiving box 81 is fixed to the bottom of the nozzle 10, the transmission block 82 is slidably mounted on the top of the nozzle 10, and the connecting block 83 is fixed to the transmission spring 85. The side wall of block 82, the support block 84 is fixed to the top of the nozzle 10, one side of the transmission spring 85 is fixed to the side wall of the support block 84, the other side of the transmission spring 85 is fixed to the side wall of the connecting block 83, the slider 86 is slidably mounted on the top of the nozzle 10, one end of the hinge rod 87 is hinged to the side wall of the slider 86, the other end of the hinge rod 87 is hinged to the side wall of the connecting block 83, the L-shaped support block 88 is fixed to the side wall of the slider 86, and the striking block 89 is fixed to the bottom of the L-shaped support block 88.

[0024] By setting a water collection box 81 at the bottom of the nozzle 10, the water dripping from the nozzle 10 can be collected, thus preventing water waste. Furthermore, when the extrusion rod 713 rotates within the moving frame 714, the moving frame 714 can move left and right, thereby causing the extrusion transmission block 82 to move back and forth, driving the connecting block 83 to move back and forth. Through the cooperation of the hinge rod 87, the slider 86, and the L-shaped support block 88, the striking block 89 can strike the back of the nozzle 10 back and forth, which can accelerate the falling of water droplets from the nozzle 10. This solves the problem that a large number of water droplets adhere to the nozzle 10, and the presence of water droplets on the outer wall can interfere with the spray angle and droplet distribution, resulting in uneven spraying and affecting the dust removal effect.

[0025] It also includes a dispersing device, which is located at the bottom of the nozzle 10. The dispersing device includes a through-hole pipe 93, a water outlet pipe 96, a bending block 91, a rack 92, a gear 94, and a dispersing plate 95. The through-hole pipe 93 passes through the bottom of the water receiving box 81 and is rotatably connected at the through-hole. The water outlet pipe 96 is fixed to the outer wall of the through-hole pipe 93 and is connected to the through-hole pipe 93. The gear 94 is fixed to the outer wall of the through-hole pipe 93. The bending block 91 is fixed to the top of the connecting block 83. The rack 92 is fixed to the end of the bending block 91 and meshes with the outer wall of the gear 94. The dispersing plate 95 is fixed to the outer wall of the through-hole pipe 93.

[0026] When the connecting block 83 moves back and forth, it can drive the rack 92 to move back and forth on the gear 94, so that the gear 94 can rotate, thereby driving the dispersing plate 95 to rotate. This solves the problem that when the water jet sprayed from the nozzle 10 is too large, it will spray out and fall down quickly, reducing the dust removal effect. The rotation of the dispersing plate 95 can strike larger water columns, breaking them into smaller water droplets, thereby improving dust removal efficiency. Furthermore, by setting up a water outlet pipe 96, the water collected in the water receiving box 81 flows out through the through-hole pipe 93 and falls onto the dispersing plate 95 during the rotation process, which can be used for secondary dust removal, thus achieving a water-saving effect.

[0027] In this embodiment, when the moving frame 714 moves back and forth, it can compress the transmission block 82, allowing the transmission block 82 to move. When the transmission block 82 moves, it drives the connecting block 83 to move. When the connecting block 83 moves, it compresses the transmission spring 85, and when the connecting block 83 moves, it compresses the hinge rod 87, causing the hinge rod 87 to rotate at the hinge point. This allows the hinge rod 87 to compress the slider 86, causing the slider 86 to move and drive the L-shaped support block 88. The moving frame 714 moves away from the nozzle 10, and when the moving frame 714 moves to a position where it does not press the transmission block 82, the transmission spring 85 is in a compressed state, which allows the transmission spring 85 to drive the connecting block 83 to reset, and the connecting block 83 to pull the hinge rod 87 to reset, thereby causing the slider 86 to drive the L-shaped support block 88 to move, so that the striking block 89 strikes the outer wall of the nozzle 10, knocking off the water droplets attached to the nozzle 10, and letting the water droplets flow into the water collection box 81 for collection; When the connecting block 83 moves back and forth, it can drive the bending block 91 to move back and forth, thereby causing the bending block 91 to drive the rack 92 to move on the gear 94, causing the gear 94 to rotate. When the gear 94 rotates, it can drive the through-hole pipe 93 to rotate. When the through-hole pipe 93 rotates, it can drive the dispersing plate 95 to rotate, so that the dispersing plate 95 can hit and disperse water droplets, etc.

[0028] 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 dust suppression device for foundation pit excavation construction, comprising a mobile base (1), characterized in that: A water tank (2) is fixed to the top of the movable seat (1), a water pump (3) is fixed to the inner wall of the water tank (2), a water pipe (6) is fixed to the top output end of the water pump (3), a support frame (4) is fixed to the top of the water tank (2), a connecting pipe (5) is fixed to the top of the support frame (4), the end of the water pipe (6) away from the water pump (3) is fixedly connected to the connecting pipe (5), a nozzle (10) is fixed to the side of the connecting pipe (5) away from the water pipe (6), a shielding device for protecting the nozzle (10) is provided on the connecting pipe (5), and an auxiliary device for reusing the water dripping from the nozzle (10) is provided on the nozzle (10). The shielding device includes a mesh plate (71), an inclined block (73), a connecting spring (72), an L-shaped block (74), a return spring (75), a baffle (76), a motor (78), a control module (79), an elastic switch (710), a fixed frame (711), a rotating rod (712), a pressing rod (713), a moving frame (714), a connecting rod (717), a connecting block (715), an auxiliary rod (716), and a swing block (77); the mesh plate (71) is slidably installed in the connecting pipe (5), and one side of the connecting spring (72) is fixed. The connecting spring (72) is fixed on the inner wall of the connecting pipe (5), and the other side of the connecting spring (72) is fixed on the side wall of the mesh plate (71). The inclined block (73) passes through the top of the connecting pipe (5) and is slidably connected at the penetration point. The L-shaped block (74) is fixed on the top of the inclined block (73). The top of the reset spring (75) is fixed on the bottom of the L-shaped block (74), and the bottom of the reset spring (75) is fixed on the top of the connecting pipe (5). The baffle (76) is fixed on the bottom of the L-shaped block (74), and the fixing frame (711) is fixed on the top of the nozzle (10).

2. The dust suppression equipment for foundation pit excavation construction according to claim 1, characterized in that: The motor (78) is fixed on the top of the L-shaped block (74). A control module (79) is fixed on the outer wall of the motor (78). An elastic switch (710) is provided on the control module (79). The elastic switch (710) is electrically connected to the control module (79). The control module (79) is electrically connected to the motor (78). A rotating rod (712) is fixed at the bottom output end of the motor (78). A pressing rod (713) is fixed at the bottom of the rotating rod (712). The moving frame (714) passes through the L-shaped block (74) and is slidably connected at the point of penetration. The bottom outer wall of the pressing rod (713) is in contact with the inner side of the moving frame (714).

3. The dust suppression equipment for foundation pit excavation construction according to claim 2, characterized in that: The swing block (77) is rotatably mounted on the bottom of the baffle (76). One end of the connecting rod (717) is fixed to the side wall of the moving frame (714). The other end of the connecting rod (717) is fixed with a connecting block (715). The auxiliary rod (716) is fixed to the bottom of the connecting block (715). The outer wall of the auxiliary rod (716) is in contact with the inner top of the swing block (77).

4. The dust suppression equipment for foundation pit excavation construction according to claim 1, characterized in that: The auxiliary device includes a water receiving box (81), a transmission block (82), a connecting block (83), a transmission spring (85), a support block (84), a hinge rod (87), a slider (86), an L-shaped support block (88), and a striking block (89); the water receiving box (81) is fixed to the bottom of the nozzle (10), the transmission block (82) is slidably mounted on the top of the nozzle (10), the connecting block (83) is fixed to the side wall of the transmission block (82), and the support block (84) is fixed to the top of the nozzle (10).

5. A dust suppression device for foundation pit excavation construction according to claim 4, characterized in that: One side of the transmission spring (85) is fixed to the side wall of the support block (84), and the other side of the transmission spring (85) is fixed to the side wall of the connecting block (83).

6. The dust suppression equipment for foundation pit excavation construction according to claim 5, characterized in that: The slider (86) is slidably mounted on the top of the nozzle (10). One end of the hinge rod (87) is hinged to the side wall of the slider (86), and the other end of the hinge rod (87) is hinged to the side wall of the connecting block (83). The L-shaped support block (88) is fixed to the side wall of the slider (86), and the striking block (89) is fixed to the bottom of the L-shaped support block (88).

7. The dust suppression equipment for foundation pit excavation construction according to claim 1, characterized in that: It also includes a dispersing device, which is located at the bottom of the nozzle (10). The dispersing device includes a through-hole pipe (93), a water outlet pipe (96), a bending block (91), a rack (92), a gear (94), and a dispersing plate (95). The through-hole pipe (93) passes through the bottom of the water receiving box (81) and is rotatably connected at the through-hole. The water outlet pipe (96) is fixed to the outer wall of the through-hole pipe (93) and is connected to the through-hole pipe (93).

8. A dust suppression device for foundation pit excavation construction according to claim 7, characterized in that: The gear (94) is fixed to the outer wall of the through-hole pipe (93), the bending block (91) is fixed to the top of the connecting block (83), the rack (92) is fixed to the end of the bending block (91), the rack (92) meshes with the outer wall of the gear (94), and the disintegrating plate (95) is fixed to the outer wall of the through-hole pipe (93).

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