A dustproof device for building demolition

Abstract

The utility model provides a building dismantling dustproof device belongs to building dismantling dustproof technical field. Including the chassis, the upper side of chassis is fixedly connected with the support rod, the upper side of support rod is fixedly connected with the roof, the upper end of chassis and support rod is provided with the spray mechanism, the upper and lower both ends of roof are provided with the adjusting mechanism. The utility model discloses a water adding mechanism is set, when the water source in the upper tank is used up, the upper tank is removed, the water in the lower tank is continuously extracted by the high pressure water pump in the process of water adding and reinstallation of the upper tank, after the reinstallation of the upper tank, the water in the upper tank continues to flow into the lower tank for the continuous extraction of the high pressure water pump, thereby ensuring that the spray work is continuously carried out when the dustproof device is watered, and the dust diffusion at the building dismantling construction site is continuously inhibited, and the dustproof effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of dust prevention technology in building demolition, and in particular to a dust prevention device for building demolition. Background Technology

[0002] With the development of the times, many dilapidated communities and buildings need to be demolished. The physical demolition of these buildings generates a lot of dust, which seriously affects the health and lives of construction workers. Dust control devices are placed at construction sites to reduce dust. The main dust control device is a mist cannon, which sprays water mist to reduce the dust in the air at the demolition site.

[0003] When using existing fog cannons, water is pumped out of the internal water storage device and then sprayed out through the atomizing nozzle. At the same time, the sprayed water mist is directed to the construction site by a strong wind. In order to ensure that the water storage device always has water, the fog cannon is usually connected to a water tanker or a high-level water tank to ensure that water is continuously supplied to the water storage device.

[0004] However, due to the construction environment of building demolition, large-volume water tankers or elevated water tanks may not be convenient to move to the vicinity of the demolition site. In this case, when the fog cannon is working, it cannot continuously provide water to the water storage device. Moreover, when workers add water, their bodies will be close to the fog cannon for a long time. Since the fog cannon is in motion, if any part of the body accidentally gets close to or comes into contact with the moving parts of the fog cannon, mechanical injury may occur. Being close to the fog cannon for a long time increases the chance of injury. It is also inconvenient to add water to the water storage device while the fog cannon is working. Therefore, when the water in the water storage device is depleted, the fog cannon needs to be turned off and time needs to be spent filling the water storage device with filtered spray water before the spraying dust suppression work can continue. As a result, dust suppression work cannot be carried out during the water filling process, leading to an increase in dust at the construction site. Summary of the Invention

[0005] The technical problem this invention aims to solve is to provide a dust suppression device for building demolition. This addresses the issue that existing dust suppression devices are often inconvenient to move due to the construction environment, such as large water tankers or elevated water tanks, to the vicinity of the demolition site. In such cases, the mist cannon cannot continuously supply water to the storage device, and workers are constantly near the cannon while adding water. Since the mist cannon is in motion, accidental contact with its moving parts could cause mechanical injury, and prolonged proximity increases the risk. Furthermore, it is inconvenient to add water to the storage device during operation. When the water in the storage device is depleted, the cannon must be shut down, and time must be spent refilling the storage device with filtered spray water before dust suppression can resume. This prevents effective dust suppression during the refilling process, leading to increased dust at the construction site.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A dust control device for building demolition includes a base frame, a support rod fixedly connected to the upper side of the base frame, a top plate fixedly connected to the upper side of the support rod, a spraying mechanism at the upper end of the base frame and the support rod, an adjustment mechanism at the upper and lower ends of the top plate, a water filling mechanism at the upper end of the base frame, and the water filling mechanism includes a limiting rod connected to the outside of the support rod, a rear fixing plate fixedly connected to the rear side of the limiting rod, a first rectangular tube at the front end of the rear fixing plate, a connecting frame connected to the outside of the limiting rod, a front fixing plate fixedly connected to the front side of the connecting frame, fixing bolts connected to the left and right ends of the front fixing plate, an upper water tank fixedly connected to the upper side of the connecting frame, a second rectangular tube fixedly connected to the lower end of the upper water tank, a U-shaped frame fixedly connected to the outer side of the lower end of the second rectangular tube, a spring fixedly connected to the left inner end of the U-shaped frame, a sealing plate fixedly connected to the right end of the spring, and limiting blocks fixedly connected to the front and rear sides of the sealing plate.

[0007] Optionally, the spraying mechanism includes a high-pressure water pump installed on the upper left side of the base frame, a lower water tank installed on the upper right side of the base frame, a water outlet pipe fixedly connected to the lower end of the lower water tank, a guide tube provided above the top plate, a water supply pipe fixedly connected to the water outlet of the high-pressure water pump, an annular pipe fixedly connected to the right end of the guide tube, and atomizing nozzles installed at equal intervals on the inner side of the annular pipe.

[0008] Optionally, the adjustment mechanism includes a disc connected to the upper side of the top plate, a rotating shaft welded to the lower middle position of the disc, a driven gear fixedly connected to the lower side of the rotating shaft, a fixed frame fixedly connected to the lower side of the top plate to the left of the driven gear, a motor installed inside the fixed frame, a driving gear fixedly connected to the upper end of the output shaft of the motor, support plates fixedly connected to the front and rear ends of the upper side of the disc, rotating plates fixedly connected to the front and rear ends of the lower outer side of the guide tube, a rotating rod fixedly connected to the upper inner end of the support plate, and an electric push rod hinged to the upper right end of the disc.

[0009] Optionally, the support rods are fixed to the left, right and middle positions at the front and rear ends of the upper side of the base frame, respectively. The limiting rod is fixed to the middle position of the right side of the support rod and the left side of the right support rod at the middle position of the upper side of the base frame. The left and right ends of the connecting frame are provided with sliding grooves, and the outer side of the limiting rod is slidably connected to the inner side of the sliding groove.

[0010] Optionally, the left and right ends of the front fixing plate are provided with round holes, the front end of the limiting rod is provided with a threaded groove, the outer side of the fixing bolt is slidably connected to the inner side of the round hole, the outer side of the fixing bolt is threadedly connected to the inner side of the threaded groove, the rear side of the connecting bracket abuts against the front side of the rear fixing plate, and the left and right ends of the rear side of the front fixing plate abut against the front side of the limiting rod.

[0011] Optionally, limiting grooves are provided at the lower left and right ends of the U-shaped frame, the outer side of the limiting block is slidably connected to the inner side of the limiting groove, and the left and right sides of the sealing plate are slidably connected to the left and right ends of the inner side of the U-shaped frame.

[0012] Optionally, the lower side of the second rectangular tube is slidably connected to the upper side of the sealing plate, the lower side of the second rectangular tube is slidably connected to the upper side of the first rectangular tube, the lower end of the first rectangular tube is fixedly connected to the middle position of the upper end of the lower water tank, and the upper front end of the first rectangular tube abuts against the rear side of the sealing plate.

[0013] Optionally, the end of the outlet pipe away from the lower water tank is fixedly connected to the inlet of the high-pressure water pump, the end of the water supply pipe away from the high-pressure water pump is fixedly connected to the lower end of the annular pipe, and a centrifugal fan is installed inside the guide tube.

[0014] Optionally, a rotating hole is provided inside the top plate below the disk, the lower side of the disk is slidably connected to the upper side of the top plate, the outer side of the rotating shaft is rotatably connected to the inner side of the rotating hole, the upper side of the driven gear is slidably connected to the lower side of the top plate, and the driven gear meshes with the driving gear.

[0015] Optionally, a through hole is provided at the lower end of the rotating plate, the outer side of the rotating rod is rotatably connected to the inner side of the through hole, and the upper end of the output shaft of the electric push rod is hinged to the lower right end of the outer side of the guide tube via a hinge.

[0016] Compared with the prior art, this utility model has at least the following beneficial effects: In the above solution, by setting up a water filling mechanism, when the water in the upper water tank is exhausted, the upper water tank is removed, and water is added to and then reinstalled. During this process, water in the lower water tank is continuously drawn and sprayed by a high-pressure water pump. After the upper water tank is reinstalled, the water in the upper water tank continues to flow into the lower water tank for continuous pumping by the high-pressure water pump. This ensures that the spraying operation continues while water is being added to the dust suppression device, thereby continuously suppressing the spread of dust at the construction site and achieving the function of dust suppression. Furthermore, by quickly removing the upper water tank for water filling, it can be moved to a location away from the dust suppression fog cannon, reducing the time that workers spend near the dust suppression fog cannon during water filling and thus reducing the potential harm to workers from the dust suppression fog cannon.

[0017] By setting an adjustment mechanism, starting the motor and driving it through the active and driven gears, the angle of the guide tube in the horizontal direction can be changed. Activating the electric push rod causes the guide tube and the rotating plate to rotate around the rotating rod, which can change the angle of the guide tube in the vertical direction. This allows for adjustment of the spray direction of the guide tube, improving the flexibility of the dust suppression device when performing spray dust suppression operations. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.

[0019] Figure 1 This is a three-dimensional structural diagram of the building after the dust control device has been removed. Figure 2 This is a schematic diagram of the structure below the top plate of this utility model; Figure 3 This is a schematic diagram of the structure of the lower water tank of this utility model; Figure 4 This is a schematic diagram of the upper water tank of this utility model; Figure 5 This is a schematic diagram of the U-shaped frame structure of this utility model; Figure 6 This is a schematic diagram of the structure at both the upper and lower ends of the top plate of this utility model; Figure 7 This is a schematic diagram of the structure at the outer end of the guide tube of this utility model.

[0020] Figure label: 1. Base frame; 2. Support rod; 3. Top plate; 401. High-pressure water pump; 402. Lower water tank; 403. Water outlet pipe; 404. Guide tube; 405. Water supply pipe; 406. Annular pipe; 407. Atomizing nozzle; 501. Disc; 502. Rotating shaft; 503. Driven gear; 504. Fixing frame; 505. Motor; 506. Drive gear; 507. Support plate; 508. Rotating plate; 509. Rotating rod; 510. Electric push rod; 601. Limiting rod; 602. Rear fixing plate; 603. First rectangular tube; 604. Connecting frame; 605. Front fixing plate; 606. Fixing bolt; 607. Upper water tank; 608. Second rectangular tube; 609. U-shaped frame; 610. Spring; 611. Sealing plate; 612. Limiting block.

[0021] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0022] The dust prevention device for building demolition provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0023] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0024] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0025] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0026] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0027] like Figure 1 and Figure 2As shown, an embodiment of this utility model provides a dust prevention device for building demolition, including a base frame 1, a support rod 2 fixedly connected to the upper side of the base frame 1, a top plate 3 fixedly connected to the upper side of the support rod 2, a spraying mechanism provided at the upper ends of the base frame 1 and the support rod 2, the spraying mechanism including a high-pressure water pump 401 installed at the upper left end of the base frame 1, a lower water tank 402 installed at the upper right end of the base frame 1, a water outlet pipe 403 fixedly connected to the lower end of the lower water tank 402, a guide tube 404 provided above the top plate 3, a water supply pipe 405 fixedly connected to the water outlet end of the high-pressure water pump 401, an annular pipe 406 fixedly connected to the right end of the guide tube 404, and atomizing nozzles 407 installed at equal intervals on the inner side of the annular pipe 406. The end of the outlet pipe 403 away from the lower water tank 402 is fixedly connected to the inlet of the high-pressure water pump 401. The end of the supply pipe 405 away from the high-pressure water pump 401 is fixedly connected to the lower end of the annular pipe 406. A centrifugal fan is installed inside the guide tube 404. By starting the high-pressure water pump 401 and the centrifugal fan inside the guide tube 404, water from the lower water tank 402 can be drawn into the outlet pipe 403 and then into the annular pipe 406 via the supply pipe 405. Finally, the water is sprayed out from the atomizing nozzle 407 to form a water mist, which is then blown far away by the strong airflow from the centrifugal fan to remove dust from the air at the building demolition site and prevent dust from spreading and affecting the construction environment.

[0028] The top plate 3 has a rotating hole located below the disc 501. The lower side of the disc 501 is slidably connected to the upper side of the top plate 3. The outer side of the rotating shaft 502 is rotatably connected to the inner side of the rotating hole. The upper side of the driven gear 503 is slidably connected to the lower side of the top plate 3, and the driven gear 503 meshes with the driving gear 506. When the output shaft of the motor 505 is started and rotated, it drives the driving gear 506 to rotate, which in turn drives the driven gear 503 to rotate, causing the rotating shaft 502 and then the disc 501 to rotate, thereby adjusting the spray angle of the guide tube 404.

[0029] like Figure 3 and Figure 4As shown, the top plate 3 is provided with adjustment mechanisms at its upper and lower ends. The adjustment mechanisms include a disc 501 connected to the upper side of the top plate 3, a rotating shaft 502 welded to the middle position of the lower side of the disc 501, a driven gear 503 fixedly connected to the lower side of the rotating shaft 502, a fixed frame 504 fixedly connected to the lower side of the top plate 3 to the left of the driven gear 503, a motor 505 installed inside the fixed frame 504, a driving gear 506 fixedly connected to the upper end of the output shaft of the motor 505, a support plate 507 fixedly connected to the front and rear ends of the upper side of the disc 501, a rotating plate 508 fixedly connected to the front and rear ends of the lower outer side of the guide tube 404, a rotating rod 509 fixedly connected to the upper inner end of the support plate 507, and an electric push rod 510 hinged to the upper right end of the disc 501. The rotating plate 508 has a through hole at its lower end. The outer side of the rotating rod 509 is rotatably connected to the inner side of the through hole. The upper end of the output shaft of the electric push rod 510 is hinged to the lower right end of the outer side of the guide tube 404. When the output shaft of the electric push rod 510 is activated and moves, the guide tube 404 can be pulled, causing the rotating plate 508 to rotate around the rotating rod 509. This changes the angle of the guide tube 404 in the vertical direction, thus adjusting the spray height of the guide tube 404.

[0030] like Figures 5 to 7As shown, the upper end of the base frame 1 is provided with a water filling mechanism, and the water filling mechanism includes a limiting rod 601 connected to the outside of the support rod 2. The support rod 2 is fixed to the left, right and middle positions of the front and rear ends of the upper side of the base frame 1, respectively. The limiting rod 601 is fixed to the middle position of the right side of the support rod 2 and the left side of the right support rod 2 at the middle position of the upper side of the base frame 1. The left and right ends of the connecting frame 604 are provided with sliding grooves, and the outer side of the limiting rod 601 is slidably connected to the inner side of the sliding groove. A rear fixing plate 602 is fixedly connected to the rear side of the limiting rod 601. A first rectangular tube 603 is provided at the front end of the rear fixing plate 602. A connecting frame 604 is connected to the outer side of the limiting rod 601. A front fixing plate 605 is fixedly connected to the front side of the connecting frame 604. Fixing bolts 606 are connected to the left and right ends of the front fixing plate 605. Circular holes are opened at the left and right ends of the front fixing plate 605. A threaded groove is opened at the front end of the limiting rod 601. The outer side of the fixing bolt 606 is slidably connected to the inner side of the circular hole. The outer side of the fixing bolt 606 is threadedly connected to the inner side of the threaded groove. The rear side of the connecting frame 604 abuts against the front side of the rear fixing plate 602. The left and right ends of the rear side of the front fixing plate 605 abut against the front side of the limiting rod 601. By sliding the connecting bracket 604 from front to back to the outside of the limiting rod 601 until the rear side of the connecting bracket 604 contacts the front side of the rear fixing plate 602, and then by threading the fixing bolt 606 through the round holes at both ends of the front fixing plate 605 into the threaded groove at the front end of the limiting rod 601, the front fixing plate 605 can be fixed to the front end of the limiting rod 601, thereby fixing the connecting bracket 604 between the limiting rods 601, and at the same time fixing the upper water tank 607 above the lower water tank 402.

[0031] The upper water tank 607 is fixedly connected to the upper side of the connecting frame 604. The lower end of the upper water tank 607 is fixedly connected to the second rectangular tube 608. The outer side of the lower end of the second rectangular tube 608 is fixedly connected to the U-shaped frame 609. The left inner end of the U-shaped frame 609 is fixedly connected to the spring 610. The right end of the spring 610 is fixedly connected to the sealing plate 611. Limiting blocks 612 are fixedly connected to the front and rear sides of the sealing plate 611. Limiting grooves are opened at the lower left and right ends of the U-shaped frame 609. The outer side of the limiting block 612 is slidably connected to the inner side of the limiting groove. The left and right sides of the sealing plate 611 are slidably connected to the left and right ends of the inner side of the U-shaped frame 609. The lower side of the second rectangular tube 608 is slidably connected to the upper side of the sealing plate 611, and the lower side of the second rectangular tube 608 is slidably connected to the upper side of the first rectangular tube 603. The lower end of the first rectangular tube 603 is fixedly connected to the middle position of the upper end of the lower water tank 402, and the upper front end of the first rectangular tube 603 abuts against the rear side of the sealing plate 611. Therefore, when the sealing plate 611 is not affected by external force, it will be pushed by the spring 610 to the lower part of the second rectangular tube 608, sealing the lower end of the second rectangular tube 608. Furthermore, when the upper water tank 607 is installed above the lower water tank 402, as the upper water tank 607 moves backward, the second rectangular tube 608 and the U-shaped bracket 609 move towards the first rectangular tube 603. The sealing plate 611 will first contact the front side of the first rectangular tube 603, and then, as the U-shaped bracket 609 moves backward, the sealing plate 611 will be blocked by the first rectangular tube 603. As the block cannot move, the spring 610 is gradually compressed. At the same time, the second rectangular tube 608 slides continuously to the upper side of the first rectangular tube 603 until the connecting bracket 604 moves to the front side of the contact fixing plate 602. Then, the second rectangular tube 608 moves completely above the first rectangular tube 603, so that the upper end of the first rectangular tube 603 is connected to the lower end of the second rectangular tube 608. At this time, the water source in the upper water tank 607 can flow into the first rectangular tube 603 through the second rectangular tube 608 and then enter the lower water tank 402 to be drawn.

[0032] The working principle of the technical solution provided by this utility model is as follows: When the water source in the lower water tank 402 is drawn for spraying, the water source in the upper water tank 607 continuously flows into the lower water tank 402. When the water source in the upper water tank 607 is exhausted, the fixing bolt 606 is removed and the connecting frame 604 is moved forward, causing the upper water tank 607 to move forward from above the lower water tank 402 between the base frame 1 and the top plate 3. During the forward movement of the upper water tank 607, the spring 610 will gradually rebound and push the sealing plate 611 to the lower side of the second rectangular tube 608. Then, the upper water tank 607 is flipped over, the sealing plate 611 at the outer end of the second rectangular tube 608 is removed, and filtered spray water is injected into the upper water tank 607. After the upper water tank 607 is full, the sealing plate is no longer controlled. The spring 610 rebounds and pushes the sealing plate 611 back to the outer end of the second rectangular tube 608. Then, the upper water tank 607 is flipped over again, and the connecting bracket 604 is slid between the limiting rods 601. Finally, the fixing bolts 606 are installed to fix the upper water tank 607 again. During the process of installing the upper water tank 607 above the lower water tank 402, the sealing plate 611 is blocked by the first rectangular tube 603 and moves forward relative to the second rectangular tube 608. After the upper water tank 607 is installed, the first rectangular tube 603 and the second rectangular tube 608 are connected, so that the water in the upper water tank 607 continues to flow into the lower water tank 402, keeping the water source in the lower water tank 402 continuously drawn by the high-pressure water pump 401 for spraying and dust suppression.

[0033] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A dust prevention device for building demolition, comprising a base frame, characterized in that, A support rod is fixedly connected to the upper side of the base frame, and a top plate is fixedly connected to the upper side of the support rod. A spraying mechanism is provided at the upper end of the base frame and the support rod. An adjustment mechanism is provided at the upper and lower ends of the top plate. A water filling mechanism is provided at the upper end of the base frame, and the water filling mechanism includes a limiting rod connected to the outside of the support rod. A rear fixing plate is fixedly connected to the rear side of the limiting rod. A first rectangular tube is provided at the front end of the rear fixing plate. A connecting frame is connected to the outside of the limiting rod. A front fixing plate is fixedly connected to the front side of the connecting frame. Fixing bolts are connected to the left and right ends of the front fixing plate. An upper water tank is fixedly connected to the upper side of the connecting frame. A second rectangular tube is fixedly connected to the lower end of the upper water tank. A U-shaped frame is fixedly connected to the outer side of the lower end of the second rectangular tube. A spring is fixedly connected to the left end of the inner side of the U-shaped frame. A sealing plate is fixedly connected to the right end of the spring. Limit blocks are fixedly connected to the front and rear sides of the sealing plate.

2. The dust control device for building demolition according to claim 1, characterized in that, The spraying mechanism includes a high-pressure water pump installed on the upper left side of the base frame, a lower water tank installed on the upper right side of the base frame, a water outlet pipe fixedly connected to the lower end of the lower water tank, a guide tube installed above the top plate, a water supply pipe fixedly connected to the water outlet of the high-pressure water pump, an annular pipe fixedly connected to the right end of the guide tube, and atomizing nozzles installed at equal intervals on the inner side of the annular pipe.

3. The dust control device for building demolition according to claim 2, characterized in that, The adjustment mechanism includes a disc connected to the upper side of the top plate. A rotating shaft is welded to the middle of the lower side of the disc. A driven gear is fixedly connected to the lower side of the rotating shaft. A fixed frame is fixedly connected to the lower side of the top plate to the left of the driven gear. A motor is installed inside the fixed frame. A driving gear is fixedly connected to the upper end of the output shaft of the motor. Support plates are fixedly connected to the front and rear ends of the upper side of the disc. Rotating plates are fixedly connected to the front and rear ends of the lower outer side of the guide tube. A rotating rod is fixedly connected to the upper inner end of the support plate. An electric push rod is hinged to the upper right end of the disc.

4. The dust control device for building demolition according to claim 1, characterized in that, The support rods are fixed to the left, right and middle positions of the front and rear ends of the upper side of the base frame, respectively. The limiting rod is fixed to the middle position of the right side of the support rod and the left side of the right support rod at the middle position of the upper side of the base frame. The left and right ends of the connecting frame are provided with sliding grooves, and the outer side of the limiting rod is slidably connected to the inner side of the sliding groove.

5. The dust control device for building demolition according to claim 1, characterized in that, The front fixing plate has round holes at both ends, the front end of the limiting rod has a threaded groove, the outer side of the fixing bolt is slidably connected to the inner side of the round hole, the outer side of the fixing bolt is threadedly connected to the inner side of the threaded groove, the rear side of the connecting bracket abuts against the front side of the rear fixing plate, and the left and right ends of the rear side of the front fixing plate abut against the front side of the limiting rod.

6. The dust control device for building demolition according to claim 1, characterized in that, Limiting grooves are provided at the lower left and right ends of the U-shaped frame. The outer side of the limiting block is slidably connected to the inner side of the limiting groove. The left and right sides of the sealing plate are slidably connected to the left and right ends of the inner side of the U-shaped frame.

7. The dust control device for building demolition according to claim 1, characterized in that, The lower side of the second rectangular tube is slidably connected to the upper side of the sealing plate, the lower side of the second rectangular tube is slidably connected to the upper side of the first rectangular tube, the lower end of the first rectangular tube is fixedly connected to the middle position of the upper end of the lower water tank, and the upper front end of the first rectangular tube abuts against the rear side of the sealing plate.

8. The dust control device for building demolition according to claim 2, characterized in that, The end of the outlet pipe away from the lower water tank is fixedly connected to the inlet of the high-pressure water pump, and the end of the water supply pipe away from the high-pressure water pump is fixedly connected to the lower end of the annular pipe. A centrifugal fan is installed inside the guide tube.

9. The dust control device for building demolition according to claim 3, characterized in that, A rotating hole is provided inside the top plate below the disk. The lower side of the disk is slidably connected to the upper side of the top plate. The outer side of the rotating shaft is rotatably connected to the inner side of the rotating hole. The upper side of the driven gear is slidably connected to the lower side of the top plate. The driven gear meshes with the driving gear.

10. The dust control device for building demolition according to claim 3, characterized in that, The rotating plate has a through hole at its lower end. The outer side of the rotating rod is rotatably connected to the inner side of the through hole. The upper end of the output shaft of the electric push rod is hinged to the lower right end of the outer side of the guide tube via a hinge.

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