Chimney blasting demolition dust falling device and dust falling method

Abstract

The application provides a chimney blasting demolition dust falling device and a dust falling method. The chimney blasting demolition dust falling device comprises a shell, the two sides of the shell are connected with the ground through ground nails, the middle part of the shell is provided with a cavity, the upper part of the shell is provided with an opening, the opening is provided with a first sliding groove, and the two sides of the cavity in the shell are provided with second sliding grooves; a cover body is slidably installed in the first sliding groove; and sliding blocks are provided with sliding rods at the two ends of the lower part of the sliding blocks, and the middle part of the sliding rod is connected with the lower part of the sliding block. The spray head in the cavity is protected by the shell and the cover body, the equipment can be safely protected when a large range deviation occurs in the chimney toppling direction, the telescopic pipe becomes straight under the action of water pressure when water is supplied to the spray head through the water inlet pipe, the reverse thrust generated when the spray head sprays water also makes the sliding block slide, thereby pushing the cover body to slide open, so that the spray head extends and sprays water towards the position where the chimney topples, the dust in the air is wetted by the water, the dust is quickly settled, and the dust falling operation is completed.

Description

Technical Field

[0001] This application relates to the field of demolition blasting technology, and in particular to a dust suppression device and method for demolishing chimneys by blasting. Background Technology

[0002] With the development of urban scale and industries, many factories have relocated from urban areas to outlying regions, leaving behind abandoned chimneys. When demolishing these abandoned chimneys, directional blasting is generally used. During blasting, a cut is made at the base of the chimney, causing it to lose support on one side and collapse in the predetermined direction, achieving rapid demolition. However, the falling chimneys during demolition generate a large amount of dust, affecting surrounding buildings and residents' lives. Therefore, people have designed devices such as the artificial water pool dust suppression device for chimney blasting disclosed in Chinese Patent Application No. 201620266418.1, or the device disclosed in Application No. 20212054. Chinese Patent 9034.1 discloses a dust suppression device for chimney folding and blasting demolition. To improve the dust suppression effect, the dust suppression device should be as close as possible to the area where the chimney collapses. However, during the blasting, the direction of the chimney collapse is also affected by multiple factors such as wind load and the chimney's own structure. The direction of the chimney collapse can generally only be controlled within a certain range. If the dust suppression device is too close to the area where the chimney collapses, it is easy to be damaged by the chimney. Therefore, a dust suppression device and method for chimney blasting demolition is needed. It can be hidden in the shell to avoid being damaged. During dust removal, the nozzle can be extended by water pressure and recoil force to spray water to suppress dust in the area where the chimney collapses. Summary of the Invention

[0003] To address the aforementioned issues, this application proposes a dust suppression device and method for chimney demolition by explosion. The device can be concealed within a casing to prevent damage. During dust suppression, water pressure and recoil force can be used to extend the nozzles and spray water to suppress dust in the collapsed chimney area.

[0004] This application is achieved through the following technical solution:

[0005] This application proposes a dust suppression device for chimney demolition by blasting, comprising:

[0006] The shell has two sides connected to the ground by ground nails, a cavity in the middle of the shell, an opening at the top of the shell with a first groove, and a second groove on both sides of the cavity inside the shell.

[0007] A cover body, which is slidably installed in a first groove;

[0008] The slider has sliding rods at both ends of its lower part, the middle part of the sliding rods is connected to the lower part of the slider, and the two ends of the sliding rods are slidably connected to the second sliding groove;

[0009] The nozzle is connected to the slider via a connecting seat, and the nozzle is tilted toward one side of the slider;

[0010] A water inlet pipe is inserted into the housing and fixedly connected to the housing;

[0011] The water inlet pipe is connected to the nozzle via a flexible hose, and the slider is connected to the cover via a connecting rod.

[0012] Furthermore, a telescopic tube is provided on one side of the housing. One end of the telescopic tube is connected to the water inlet pipe through a branch pipe, and the other end of the telescopic tube is closed. One end of the telescopic tube is fixed to one side of the housing, and the other end of the telescopic tube is connected to the cover.

[0013] Furthermore, the telescopic tube is a corrugated pipe made of plastic, and the corrugated pipe is provided with a steel ring around its circumference.

[0014] Furthermore, both ends of the nozzle are connected to the connecting seat via locking nuts. After the locking nuts are loosened, the nozzle can rotate on the connecting seat.

[0015] Furthermore, the second slide groove has a horizontal part and a vertical part, and the horizontal part and the vertical part have an arc transition. When the slider slides the horizontal part of the second slide groove, the slider is in a horizontal state, and the nozzle is tilted towards the vertical part.

[0016] Furthermore, the first groove is parallel to the horizontal section.

[0017] Furthermore, the housing has multiple through holes on both sides.

[0018] Furthermore, magnets are provided on both the opening side of the upper part of the shell and the cover side. When the cover is closed, the cover is attracted to the opening of the shell by the magnets.

[0019] A dust suppression method for a chimney demolition dust suppression device, characterized by the following steps:

[0020] Step S1: Set the centerline according to the direction of blasting and dumping, and set two first straight lines at ±7° of the centerline, and set two second straight lines at ±9° of the centerline;

[0021] Step S2: Install dust suppression devices at intervals on the first and second straight lines, limit the dust suppression devices with ground nails, and then connect the dust suppression devices to the fire truck in parallel through water pipes.

[0022] Step S3: Check the dust suppression devices and ensure that all covers on the dust suppression devices are closed.

[0023] Step S4: During detonation, a drone hovers above the chimney to determine the angle at which the chimney tilts and to determine the water supply method based on the chimney's tilt.

[0024] Step S5: Water is supplied to the dust suppression device via a fire truck, and water is sprayed into the air through nozzles to suppress dust.

[0025] Furthermore, in step S4, if the chimney tilting direction is between the two first straight lines, water is supplied to the dust suppression devices on the first and second straight lines simultaneously; if the chimney tilting direction is close to the first or second straight line, the dust suppression devices on that line are kept in the closed state, and water is supplied to the dust suppression devices on other first and second straight lines.

[0026] The beneficial effects of this application are as follows: the nozzles in the inner cavity are protected by the shell and cover, which can protect the equipment when the chimney tilts in a large range of deviations. When water is supplied to the nozzles through the water inlet pipe, the telescopic pipe becomes taut under the action of water pressure, and the counter-thrust generated when the nozzles spray water also causes the slider to slide, thereby pushing the cover to slide open, so that the nozzles can extend and spray water towards the tilted position of the chimney. By wetting the dust in the air with water, the dust is quickly settled, thus completing the dust suppression operation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the unfolded state of the present invention during water supply;

[0028] Figure 2 This is a schematic diagram of the structure of the cover in the closed state of the present invention;

[0029] In the diagram: 1-shell, 2-ground nail, 3-first slide groove, 4-second slide groove, 5-cover, 6-slider, 7-slide rod, 8-nozzle, 9-connecting seat, 10-water inlet pipe, 11-soft hose, 12-connecting rod, 13-telescopic pipe, 14-branch pipe, 15-through hole, 16-magnet. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of the stated features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] like Figures 1 to 2 As shown, an embodiment of the present invention provides a dust suppression device for chimney demolition, comprising: a shell 1, the shell 1 being connected to the ground on both sides by ground nails 2, a cavity in the middle of the shell 1, an opening at the upper part of the shell 1, and a first sliding groove 3 at the opening, and a second sliding groove 4 on both sides of the cavity inside the shell 1; a cover 5, the cover 5 being slidably installed in the first sliding groove 3; a slider 6, the slider 6 having sliding rods 7 at both ends of its lower part, the middle of the sliding rods 7 being connected to the lower part of the slider 6, and the two ends of the sliding rods 7 being slidably connected to the second sliding groove 4; a nozzle 8, the nozzle 8 being connected to the slider 6 through a connecting seat 9, the nozzle 8 being inclined toward the slider 6; and a water inlet pipe 10, the water inlet pipe 10 being inserted into the shell 1 and fixedly connected to the shell 1; wherein, the water inlet pipe 10 is connected to the nozzle 8 through a flexible hose 11, and the slider 6 is connected to the cover 5 through a connecting rod 12.

[0034] When the equipment is not in operation, the cover 5 is magnetically attached to the opening of the housing 1. At this time, the slider 6 slides to the vertical part of the second slide groove 4, and the slider 6 is in a vertical state. The nozzle 8 is hidden in the cavity formed by the housing 1 and the cover 5. The cover 5 and the housing 1 are made of steel plate, which has high hardness and can withstand the impact of a collapsed chimney. When the fire truck supplies water through the inlet pipe 10, firstly, water enters the telescopic pipe 13 through the branch pipe 14. Under the action of water pressure, the telescopic pipe 13 gradually straightens. Secondly, water sprays from the nozzle. The water sprays out from the nozzle 8. After the nozzle 8 is subjected to the reaction force of the water, it pushes the slider 6 to slide. Thirdly, the hose 11 also becomes taut under the action of water pressure. Under the above three forces, the cover 5 overcomes the magnetic force and slides, and drives the slider 6 to slide on the second slide groove 4 through the connecting rod 12, so that the nozzle 8 extends out from the opening at the top of the housing 1 and sprays high-pressure water through the nozzle 8, so that the nozzle 8 extends out and sprays water towards the position where the chimney is tilted. The water moistens the dust in the air and makes it settle quickly, thus completing the dust suppression operation.

[0035] This device can conceal the nozzles when no water is supplied, protect the equipment from being crushed when the chimney tilts significantly, and automatically open after water is supplied to reduce dust.

[0036] Preferably, a telescopic tube 13 is provided on one side of the housing 1. One end of the telescopic tube 13 is connected to the water inlet pipe 10 through a branch pipe 14, and the other end of the telescopic tube 13 is closed. One end of the telescopic tube 13 is fixed to one side of the housing 1, and the other end of the telescopic tube 13 is connected to the cover 5. After water is supplied, the telescopic tube 13 straightens and extends under the action of high pressure water, thereby pushing the cover 5 to slide and causing the nozzle 8 to extend.

[0037] In a preferred embodiment, the telescopic tube 13 is a corrugated plastic tube that can be bent so that the cover 5 can be closed. The corrugated tube is provided with a steel ring around its circumference, which can restrict the circumferential expansion of the corrugated tube so that it can only extend along its axis. Thus, under the action of water pressure, the telescopic tube 13 extends and pushes the cover 5 to slide.

[0038] Preferably, the nozzle 8 is connected to the connecting seat 9 at both ends by locking nuts. After the locking nuts are loosened, the nozzle 8 can rotate on the connecting seat 9, which makes it easy to adjust the spray angle of the nozzle 8 so as to better cover the collapsed area of ​​the chimney.

[0039] Preferably, the second slide groove 4 has a horizontal part and a vertical part, with an arc transition between the horizontal and vertical parts. When the slider 6 slides on the horizontal part of the second slide groove 4, the slider 6 is in a horizontal state, and the nozzle 8 is tilted towards the vertical part. The angle of the slider 6 is controlled by the second slide groove 4, so that the slider 6 becomes vertical when hidden inside the housing 1, reducing the space required for hiding. Secondly, when the chimney falls down, when the debris hits the cover 5, the cover 5 will tend to move laterally. At this time, since the slider 6 is located in the vertical part, when it is pulled by the cover 5 at high speed, the vertical part and the slide rod restrict the lateral movement of the slider 6. The slider 6 pulls the cover 5 through the connecting rod 12, thereby preventing the cover 5 from being knocked open by the debris.

[0040] In one specific embodiment, the first groove 3 is parallel to the horizontal part, so that the slider 6 and the cover 5 can slide smoothly when they are linked.

[0041] Preferably, the housing 1 has multiple through holes 15 on both sides to prevent water from accumulating in the housing 1 and affecting the thrust of the nozzle 8.

[0042] Preferably, magnets 16 are provided on both the opening side of the upper part of the housing 1 and the cover 5 side. When the cover 5 is closed, the cover 5 is attracted to the opening of the housing 1 by the magnets 16. When the chimney falls, the fragments mainly fall in the vertical direction. The magnets 16 keep the cover 5 in a closed state to prevent the nozzle 8 from being exposed due to the cover 5 sliding randomly.

[0043] A dust suppression method for a chimney demolition dust suppression device, characterized by the following steps:

[0044] Step S1: Set the centerline according to the direction of blasting and dumping, and set two first straight lines at ±7° of the centerline, and set two second straight lines at ±9° of the centerline. Under normal circumstances in the industry, the dumping angle can be controlled within ±5°. Setting straight lines and laying them out can facilitate the installation of dust suppression devices, so that the dust suppression devices are as close as possible to the dumping position and improve the dust suppression effect.

[0045] Step S2: Install dust suppression devices at intervals on the first and second straight lines. Use ground nails to limit the dust suppression devices to prevent water pressure backflow from causing the equipment to shift. Then connect the dust suppression devices to the fire truck in parallel through water pipes. The fire truck provides high-pressure water, allowing the equipment to deploy autonomously and spray water into the air.

[0046] Step S3: Check the dust suppression devices to ensure that all covers on the dust suppression devices are closed. When closed, the covers and housings protect the safety of the internal equipment.

[0047] Step S4: When detonating, a drone hovers above the chimney to determine the angle at which the chimney tilts and to determine the water supply method based on the tilting situation. Usually, the tilting direction can be confirmed within a few seconds after detonation, allowing the water supply to be turned on earlier and improving the dust suppression effect.

[0048] Step S5: Water is supplied to the dust suppression device by a fire truck. Water is sprayed into the air through nozzles to suppress dust. The fire truck provides high-pressure water, which allows the equipment to deploy autonomously and spray water into the air at a height of 15m to 20m. Multiple dust suppression devices spray water to cover the area where the chimney collapsed, achieving rapid dust suppression.

[0049] In step S4, if the chimney tilts between the two first straight lines, water is supplied to the dust suppression devices on the first and second straight lines simultaneously. If the chimney tilts closer to the first or second straight line, the dust suppression devices on that line are kept closed, and water is supplied to the dust suppression devices on other first and second straight lines. If it is determined that the chimney tilt may affect the dust suppression devices, water can be withheld from the dust suppression devices in that direction, keeping them closed, and protecting the safety of the internal equipment through the cover and shell.

[0050] Of course, this application may have many other implementation methods. Based on this implementation method, other implementation methods obtained by those skilled in the art without any creative effort are all within the scope of protection of this application.

Claims

1. A dust suppression device for chimney demolition by blasting, characterized in that, include: The shell (1) is connected to the ground on both sides by ground nails (2). The shell (1) has a cavity in the middle and an opening at the top. The opening has a first groove (3) and the cavity inside the shell (1) has a second groove (4) on both sides. Cover (5), which is slidably installed in the first groove (3); A slider (6) is provided with sliding rods (7) at both ends of the lower part of the slider (6). The middle part of the sliding rods (7) is connected to the lower part of the slider (6), and the two ends of the sliding rods (7) are slidably connected to the second sliding groove (4). The nozzle (8) is connected to the slider (6) via a connecting seat (9), and the nozzle (8) is tilted toward the slider (6). Water inlet pipe (10), the water inlet pipe (10) is inserted into the housing (1) and fixedly connected to the housing (1); The water inlet pipe (10) is connected to the nozzle (8) via a hose (11), and the slider (6) is connected to the cover (5) via a connecting rod (12). The shell (1) is provided with a telescopic tube (13) on one side. One end of the telescopic tube (13) is connected to the water inlet pipe (10) through a branch pipe (14). The other end of the telescopic tube (13) is closed. One end of the telescopic tube (13) is fixed to one side of the shell (1), and the other end of the telescopic tube (13) is connected to the cover (5). The telescopic tube (13) is a corrugated pipe made of plastic. The second slide groove (4) has a horizontal part and a vertical part, and the horizontal part and the vertical part have an arc transition. When the slider (6) slides to the horizontal part of the second slide groove (4), the slider (6) is in a horizontal state, and the nozzle (8) is tilted towards the vertical part. Water is supplied to the nozzle (8) through the water inlet pipe (10). The telescopic pipe (13) is straightened by the water pressure. The counter-thrust generated when the nozzle (8) sprays water also causes the slider (6) to slide, thereby pushing the cover to slide open and allowing the nozzle to extend.

2. The dust suppression device for chimney demolition according to claim 1, characterized in that, The corrugated pipe is surrounded by a steel ring.

3. The dust suppression device for chimney demolition according to claim 1, characterized in that, The nozzle (8) is connected to the connecting seat (9) at both ends by locking nuts. After the locking nuts are loosened, the nozzle (8) can rotate on the connecting seat (9).

4. The dust suppression device for chimney demolition according to claim 1, characterized in that, The first groove (3) is parallel to the horizontal part.

5. The dust suppression device for chimney demolition according to claim 1, characterized in that, The housing (1) has multiple through holes (15) on both sides.

6. The dust suppression device for chimney demolition according to claim 1, characterized in that, Magnets (16) are provided on the upper opening side of the shell (1) and the cover (5) side. When the cover (5) is closed, the cover (5) is attracted to the opening of the shell (1) by the magnets (16).

7. A dust suppression method using a chimney blasting demolition dust suppression device as described in any one of claims 1 to 6. Its features include the following steps: Step S1: Set the centerline according to the direction of blasting and dumping, and set two first straight lines at ±7° of the centerline, and set two second straight lines at ±9° of the centerline; Step S2: Install dust suppression devices at intervals on the first and second straight lines, limit the dust suppression devices with ground nails, and then connect the dust suppression devices to the fire truck in parallel through water pipes. Step S3: Check the dust suppression devices and ensure that all covers on the dust suppression devices are closed. Step S4: During detonation, a drone hovers above the chimney to determine the angle at which the chimney tilts and to determine the water supply method based on the chimney's tilt. Step S5: Water is supplied to the dust suppression device by a fire truck, and water is sprayed into the air through nozzles (8) to suppress dust.

8. The dust suppression method for a chimney blasting demolition dust suppression device according to claim 7, characterized in that, In step S4, if the chimney tilts between the two first straight lines, water is supplied to the dust suppression devices on the first and second straight lines simultaneously. If the chimney tilts closer to the first or second straight line, the dust suppression devices on that line are kept closed, and water is supplied to the dust suppression devices on other first and second straight lines.

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