A dust removal spray device for construction engineering

Abstract

The present invention relates to the technical field of dust removal spray devices, and specifically discloses a dust removal spray device for construction engineering, comprising a water tank; a spray pipe, a plurality of spray holes are opened at the bottom of the spray pipe; an adjusting mechanism, the adjusting mechanism is located on the inner wall of the spray pipe; a water pump; a conveying mechanism, the conveying mechanism is respectively connected to the water pump and the spray pipe; and a pressure stabilizing mechanism, the pressure stabilizing mechanism is connected to the spray pipe. This dust removal spray device for construction engineering supplies water to the spray pipe through the provided conveying mechanism, and the conveying mechanism detects the water flow velocity in real time, and controls the adjustment mechanism to work when the water flow velocity increases, and the adjustment mechanism increases the aperture of the spray hole, thereby increasing the aperture of the spray hole to reduce the water flow resistance in the pipeline, allowing the water to flow out more smoothly, reducing the continuous pressure of the fluid dynamic pressure on the pipeline, and reducing the risk of water hammer impact damage to the pipeline and equipment, and the pressure stabilizing mechanism absorbs the water hammer pressure wave energy when stopping spraying, thereby reducing the impact on the stability of the tower arm structure.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal spray devices, in particular to a dust removal spray device for construction engineering. Background Art

[0002] Dust removal spray systems for construction projects are used to reduce dust pollution during construction. A high-pressure water pump pressurizes water, forcing it through a specially designed atomizing nozzle to form fine water mist particles. These water mist particles have a large surface area, allowing them to fully contact dust particles in the air. Through inertial collision, interception, and agglomeration, dust particles adhere to the water mist particles, increasing their weight and accelerating their settling, achieving the purpose of dust removal. Types include tower crane spray systems, enclosure spray systems, and fog cannons.

[0003] The tower crane spray system generally installs pipes, nozzles and other equipment on the crane's boom, tower body and other parts, and sprays water evenly to every corner of the construction area through the crane's boom. It is suitable for dust removal in large-scale construction sites.

[0004] However, in the tower crane sprinkler system, there is a direct positive correlation between water pressure and tower arm height, that is, when the tower arm height increases, the water pressure will also increase. According to the principle of water hammer effect, when the valve is suddenly closed, the water flow velocity instantly becomes zero, and its kinetic energy is converted into pressure energy, generating water hammer pressure. The increase in tower arm height increases the water pressure. Under the same valve closing action, the water hammer pressure will further increase.

[0005] High water hammer pressure is transmitted through the pipes to the tower arm, impacting it. The tower arm is designed to meet specific load and balance requirements, and additional impact forces can disrupt this equilibrium. Repeated water hammer pressure can cause fatigue stress in the tower arm structure. Over time, this can lead to loosening and deformation of the tower arm's connections, potentially compromising the stability of the entire tower arm and increasing the risk of tilt or imbalance. Therefore, we propose a dust removal spray device for construction projects. Summary of the Invention

[0006] The purpose of the present invention is to provide a dust removal spray device for construction projects to solve the problem raised in the above background technology that when water hammer pressure is repeatedly applied, fatigue stress will be generated in the tower arm structure, which may cause the connection parts of the tower arm to loosen and deform in the long term, and even affect the stability of the entire tower arm, increasing the risk of the tower arm tilting or unbalance.

[0007] To achieve the above object, the present invention provides the following technical solution: a dust removal spray device for construction engineering, comprising a water storage tank; a spray pipe, and a plurality of spray holes are opened at the bottom of the spray pipe;

[0008] The regulating mechanism is located on the inner wall of the spray pipe and adjusts the size of the spray hole according to the water pressure and the height of the tower arm;

[0009] a water pump, the water pump being connected to the water storage tank;

[0010] The conveying mechanism is connected to the water pump and the spray pipe respectively. The conveying mechanism delivers water to the spray pipe. The conveying mechanism detects the water flow velocity in real time and controls the regulating mechanism to work when the water flow velocity increases. The regulating mechanism increases the size of the spray hole. The conveying mechanism adaptively adjusts the water delivery height when the tower arm rises. The conveying mechanism controls the regulating mechanism to work when adjusting the water delivery height.

[0011] The pressure stabilizing mechanism is connected to the spray pipe and absorbs the energy of the water hammer pressure wave when the spraying stops.

[0012] Among them, the adjustment mechanism includes a baffle that is slidably connected to the inner wall of the spray pipe, the baffle blocks part of the spray hole, a connecting rod is fixedly connected to the outside of the baffle, a traction part is provided at the end of the connecting rod away from the baffle, and a return spring is provided on the outside of the connecting rod, one end of the return spring is fixed to the baffle, and the other end of the return spring is fixed to the inner wall of the spray pipe.

[0013] The traction member includes an iron sheet fixedly connected to the end of the connecting rod away from the baffle, and an electromagnet is installed on the inner wall of the spray pipe, and the electromagnet is located outside the iron sheet.

[0014] Among them, the conveying mechanism includes a water inlet pipe connected to the water pump, a support is provided on the outside of one end of the water inlet pipe away from the water pump, a fixed cylinder is fixedly connected to the inner wall of the support, the fixed cylinder is connected to the water inlet pipe, the inner wall of the support is rotatably connected to the rotating frame, the inner wall of the rotating frame is fixedly connected to a connecting pipe, the connecting pipe is L-shaped, one end of the connecting pipe is sealed and rotatably connected to the inner wall of the fixed cylinder, the other end of the connecting pipe is threadedly connected to a water pipe on the outside, the water pipe is spirally wound on the outside of the rotating frame, the water pipe is connected to the spray pipe away from the end of the connecting pipe, a flow velocity detection component for detecting the water flow velocity is provided on the inner wall of the fixed cylinder, and a tower height detection component for detecting the height of the tower arm is provided on the outside of the rotating frame.

[0015] Among them, the flow rate detection component includes an impeller located on the inner wall of the fixed cylinder, the impeller rotates and is sealed with the inner wall of the fixed cylinder, one end of the impeller passes through the inner wall of the fixed cylinder and is fixedly connected to a rotating rod, a fixed disk is fixedly connected to the outside of the rotating rod, both sides of the fixed disk are rotatably connected with swing arms, the swing arm is fixedly connected to one end of the fixed disk, a movable disk is slidably connected to the outside of the rotating rod, both sides of the movable disk are rotatably connected with pull rods, the pull rod is rotatably connected to the swing arm at one end away from the movable disk, and an adjustment component is provided at the bottom of the movable disk for adjusting the size of the electromagnetic magnetic field according to the displacement of the movable disk.

[0016] Among them, the adjusting part includes a transmission cylinder fixedly connected to the bottom of the movable disk, a pull rope fixedly connected to the outside of the transmission cylinder, a guide frame fixedly connected to the outside of the fixed cylinder, the pull rope is slidably connected to the inner wall of the guide frame, an insulating plate 1 is fixedly connected to the end of the pull rope away from the transmission cylinder, a placement box is fixedly connected to the outside of the fixed cylinder, the insulating plate 1 is slidably connected to the inner wall of the placement box, a compression spring is fixedly connected to the outside of the insulating plate 1, the compression spring is fixed to the inner wall of the placement box, a sliding rheostat 1 is installed on the inner wall of the placement box, the insulating plate 1 is fixed to the slider of the sliding rheostat 1, and the sliding rheostat 1 is connected in series in the circuit where the electromagnet is located.

[0017] Among them, the tower height detection component includes a rotating shaft fixed to the outside of the rotating frame, the rotating shaft is rotatably connected to the inner wall of the support, the rotating shaft is installed at the axial center of the rotating frame, the outside of the rotating shaft is fixedly connected to a transmission gear 1, a transmission gear 2 is provided on the outside of the transmission gear 1, the end of the transmission gear 2 is fixedly connected to a transmission gear 3, the transmission gear 3 rotates coaxially with the transmission gear 2, the outside of the transmission gear 3 is meshed with a transmission plate, the transmission plate is slidably connected to the inner wall of the support, the outside of the transmission plate is fixedly connected to an insulating plate 2, a sliding rheostat 2 is installed on the inner wall of the support, the insulating plate 2 is connected to the slider inside the sliding rheostat 2, and the sliding rheostat 2 is connected in series with the circuit where the electromagnet is located.

[0018] Among them, the number of teeth of the transmission gear 2 is greater than that of the transmission gear 1, and the number of teeth of the transmission gear 3 is less than that of the transmission gear 2.

[0019] Among them, the pressure stabilizing mechanism includes two storage tanks, which are respectively located at the tail end and the middle of the spray pipe. The storage tanks are connected to the spray pipe. A rubber airbag is installed inside the storage tank. The rubber airbag divides the storage tank into two parts, the upper part of the storage tank is an air cavity, and the lower part of the storage tank is a water cavity connected to the spray pipe.

[0020] Among them, a solenoid valve is installed at the connection point between the storage tank in the middle and the spray pipe, and a travel switch is installed on the inner wall of the support.

[0021] The present invention has at least the following beneficial effects:

[0022] When the present application is in use, water is delivered to the sprinkler pipe through the provided conveying mechanism, and the conveying mechanism detects the water flow velocity in real time, and controls the operation of the regulating mechanism when the water flow velocity increases, so that the regulating mechanism increases the aperture of the spray hole. Increasing the aperture of the spray hole reduces the water flow resistance in the pipeline, allowing the water to flow out more smoothly, reducing the continuous pressure of the fluid dynamic pressure on the pipeline, and reducing the risk of water hammer damage to the pipeline, valves and equipment. The pressure stabilizing mechanism absorbs the energy of the water hammer pressure wave when the spraying stops, reducing the impact on the stability of the tower arm structure, and the conveying mechanism will also adaptively adjust the water delivery height when the tower arm is raised. The conveying mechanism controls the operation of the regulating mechanism when adjusting the water delivery height, and the regulating mechanism increases the aperture of the spray hole when the tower arm is raised. Increasing the aperture can increase the droplet size, improve the droplet's ability to resist wind drift, and more effectively absorb dust in the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the spray structure of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the main structure of the storage tank of the present invention;

[0026] Figure 4 This is a schematic front and cross-sectional view of the structural adjustment mechanism of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the conveying mechanism of the present invention;

[0028] Figure 6 This is a side sectional schematic diagram of a structural tower height detection component of the present invention;

[0029] Figure 7 This is a schematic diagram of the connection between the transmission gear 3 and the transmission plate of the present invention;

[0030] Figure 8 for Figure 7 Enlarged schematic diagram of area A in the middle;

[0031] Figure 9 This is a schematic diagram of the connection relationship between the water inlet pipe and the fixed cylinder of the structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the structural separation of the flow velocity detection component of the present invention;

[0033] Figure 11 This is a schematic side cross-sectional view of the fixing cylinder of the structure of the present invention;

[0034] Figure 12 It is a schematic front and cross-sectional view of the structural adjustment member of the present invention.

[0035] Figure: 1, water tank; 2, spray pipe; 20, spray hole; 3, adjustment mechanism; 30, baffle; 31, connecting rod; 32, traction member; 33, return spring; 34, iron sheet; 35, electromagnet; 4, water pump; 5, conveying mechanism; 50, water inlet pipe; 51, support; 52, fixed cylinder; 53, rotating frame; 54, connecting pipe; 55, water pipe; 56, flow rate detection member; 57, tower height detection member; 58, impeller; 59, rotating rod; 510, fixed plate; 511, swing arm; 512, centrifugal weight ball; 513, moving plate; 5 14. Pull rod; 515. Adjustment member; 516. Transmission cylinder; 517. Pull rope; 518. Guide frame; 519. Insulation plate 1; 520. Placement box; 521. Compression spring; 522. Sliding rheostat 1; 523. Rotating shaft; 524. Transmission gear 1; 525. Transmission gear 2; 526. Transmission gear 3; 527. Transmission plate; 528. Insulation plate 2; 529. Sliding rheostat 2; 6. Voltage stabilizing mechanism; 60. Storage tank; 61. Rubber airbag; 62. Air cavity; 63. Water cavity; 64. Solenoid valve; 65. Travel switch. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figures 1 to 12 The present invention provides a technical solution: a dust removal spray device for construction engineering, comprising a water storage tank 1; a spray pipe 2, a plurality of spray holes 20 are opened at the bottom of the spray pipe 2; an adjusting mechanism 3, the adjusting mechanism 3 is located on the inner wall of the spray pipe 2, and the adjusting mechanism 3 adjusts the size of the spray holes 20 according to the water pressure and the height of the tower arm; a water pump 4, the water pump 4 is connected to the water storage tank 1; a conveying mechanism 5, the conveying mechanism 5 is connected to the water pump 4 and the spray pipe 2 respectively, the conveying mechanism 5 supplies water to the spray pipe 2, the conveying mechanism 5 detects the water flow speed in real time, and controls the regulating mechanism 3 to work when the water flow speed increases, the regulating mechanism 3 increases the size of the spray holes 20, and the conveying mechanism 5 adaptively adjusts the water delivery height when the tower arm is raised, and the conveying mechanism 5 controls the regulating mechanism 3 to work when adjusting the water delivery height; a pressure stabilizing mechanism 6, the pressure stabilizing mechanism 6 is connected to the spray pipe 2, and the pressure stabilizing mechanism 6 absorbs the energy of the water hammer pressure wave when the spraying stops.

[0039] During use, the water pump 4 is connected to the water tank, the water tank is installed on the outside of the crane, and the spray pipe 2 is installed on the crane arm. The crane arm is rotated to drive the spray pipe 2 to move above the construction site. The staff starts the water pump 4 to pump the water in the water tank into the regulating mechanism 3, and the entering spray liquid is sent into the spray pipe 2 through the regulating mechanism 3. The spray liquid entering the spray pipe 2 is sprayed on the construction site through the spray hole 20.

[0040] When dust reduction is carried out at a construction site in windy weather, in order to prevent excessively fine droplets from being blown away by the wind and interfering with the dust reduction range, the staff will increase the working power of the water pump 4, so that the flow rate and pressure of the spray liquid in the spray pipe 2 will increase, and the conveying mechanism 5 will detect the water flow speed in real time, and control the adjustment mechanism 3 to work when the water flow speed increases. The adjustment mechanism 3 increases the aperture of the spray hole 20, thereby increasing the aperture of the spray hole 20 to reduce the water flow resistance in the pipeline, allowing the water to flow out more smoothly, reducing the continuous pressure of the fluid dynamic pressure on the pipeline, and reducing the risk of water hammer impact damage to the pipeline, valves and equipment. The pressure stabilizing mechanism 6 absorbs the water hammer pressure wave energy when the spraying stops, reducing the impact on the stability of the tower arm structure.

[0041] When the height of the tower boom increases, the water pressure of the tower crane spray system will show a linear growth trend with the increase of the tower boom height. For every 10 meters increase in height, the static water pressure increases by about 0.1MPa. At the same time, the superimposed influence of pipeline resistance and dynamic pressure needs to be considered, so that the conveying mechanism 5 will adaptively adjust the water delivery height. The conveying mechanism 5 controls the operation of the regulating mechanism 3 when adjusting the water delivery height. The regulating mechanism 3 increases the aperture of the spray hole 20 when the tower boom rises. For example, when the height is less than 30 meters, a nozzle with an aperture of 2-2.5mm is used; for height greater than 50 meters: the aperture is increased to 3-3.5mm. Increasing the aperture can increase the droplet size, improve the droplet's ability to resist wind drift, and more effectively absorb dust in the air.

[0042] The adjusting mechanism 3 includes a baffle 30 that is slidably connected to the inner wall of the spray pipe 2. The baffle 30 blocks part of the spray hole 20. A connecting rod 31 is fixedly connected to the outside of the baffle 30. A traction member 32 is provided at one end of the connecting rod 31 away from the baffle 30. A return spring 33 is provided on the outside of the connecting rod 31. One end of the return spring 33 is fixed to the baffle 30, and the other end of the return spring 33 is fixed to the inner wall of the spray pipe 2.

[0043] The traction member 32 includes an iron sheet 34 fixedly connected to the end of the connecting rod 31 away from the baffle 30 . An electromagnet 35 is installed on the inner wall of the spray pipe 2 and is located outside the iron sheet 34 .

[0044] When the adjustment mechanism 3 is working, the current intensity of the electromagnet 35 increases, thereby increasing the magnetic field intensity of the electromagnet 35, which increases the attraction of the electromagnet 35 to the iron sheet 34. The electromagnet 35 attracts the iron sheet 34 to move closer, and the iron sheet 34 pulls the connecting rod 31 to move. The connecting rod 31 pulls the baffle 30, and the movement of the baffle 30 compresses the return spring 33, so that the elastic force generated by the deformation of the return spring 33 is the same as the attraction of the electromagnet 35 to the iron sheet 34. The movement of the baffle 30 reduces the area blocking the spray hole 20, thereby adjusting the aperture of the spray hole 20.

[0045] The conveying mechanism 5 includes a water inlet pipe 50 connected to the water pump 4. A support 51 is provided on the outer side of the end of the water inlet pipe 50 away from the water pump 4. A fixed cylinder 52 is fixedly connected to the inner wall of the support 51. The fixed cylinder 52 is connected to the water inlet pipe 50. The inner wall of the support 51 is rotatably connected to the rotating frame 53. The inner wall of the rotating frame 53 is fixedly connected to a connecting pipe 54. The connecting pipe 54 is L-shaped. One end of the connecting pipe 54 is sealed and rotatably connected to the inner wall of the fixed cylinder 52. The other end of the connecting pipe 54 is threadedly connected to a water pipe 55 on the outer side. The water pipe 55 is spirally wound on the outside of the rotating frame 53. The end of the water pipe 55 away from the connecting pipe 54 is connected to the spray pipe 2. A flow velocity detection component 56 for detecting the water flow velocity is provided on the inner wall of the fixed cylinder 52, and a tower height detection component 57 for detecting the height of the tower arm is provided on the outer side of the rotating frame 53.

[0046] When the tower arm height of the crane remains unchanged, if the wind speed at the construction site changes, the staff will increase the power of the water pump 4 in order to avoid the influence of the airflow on the spray droplets. The increased power of the water pump 4 increases the flow rate of the spray liquid in the water inlet pipe 50, and the water flow rate in the fixed cylinder 52 is detected by the flow rate detection component 56. When the water flow rate increases, the flow rate detection component 56 increases the current intensity in the circuit where the electromagnet 35 is located, so that the electromagnet 35 attracts the baffle 30 and increases the aperture of the spray hole 20.

[0047] When the height of the tower arm of the crane increases, the tower arm rising height is detected by the tower height detection component 57. Since the hydrostatic pressure is proportional to the height, when the tower arm rises, the hydrostatic pressure will also increase. Therefore, the tower height detection component 57 will also increase the current intensity in the circuit where the electromagnet 35 is located, so that the electromagnet 35 attracts the baffle 30 and increases the aperture of the spray hole 20. In addition, when the height increases, the power of the water pump 4 will also increase, so that the flow rate of the water flow in the fixed cylinder 52 also changes. The flow rate detection component 56 assists in increasing the current intensity in the circuit where the electromagnet 35 is located, and jointly adjusts the aperture of the spray hole 20.

[0048] The flow rate detection component 56 includes an impeller 58 located on the inner wall of the fixed cylinder 52, and the impeller 58 is rotatably connected to the inner wall of the fixed cylinder 52 and is sealed. One end of the impeller 58 passes through the inner wall of the fixed cylinder 52 and is fixedly connected to a rotating rod 59. A fixed disk 510 is fixedly connected to the outside of the rotating rod 59. The fixed disk 510 is rotatably connected to swing arms 511 on both sides. The swing arm 511 is fixedly connected to a centrifugal counterweight ball 512 at one end away from the fixed disk 510. A movable disk 513 is slidably connected to the outside of the rotating rod 59. The movable disk 513 is rotatably connected to pull rods 514 on both sides. The pull rod 514 is rotatably connected to the swing arm 511 at one end away from the movable disk 513. An adjustment component 515 is provided at the bottom of the movable disk 513 for adjusting the magnetic field size of the electromagnet 35 according to the displacement of the movable disk 513.

[0049] When the power of the water pump 4 increases, the water flow velocity in the fixed cylinder 52 increases, so that when the water flow hits the impeller 58, the speed of the impeller 58 increases, and the impeller 58 drives the speed of the rotating rod 59 to increase. When the speed of the rotating rod 59 increases, the rotating rod 59 drives the centrifugal weight ball 512 to rotate through the swing arm 511. Since the speed of the rotating rod 59 increases, the speed of the centrifugal weight ball 512 increases, and the centrifugal force of the centrifugal weight ball 512 during rotation increases. The centrifugal weight ball 512 causes the inclination angle of the swing arm 511 to change. The swing arm 511 drives the pull rod 514 to move, and the pull rod 514 pulls the movable disk 513 to move upward along the surface of the rotating rod 59. When the movable disk 513 moves upward, it drives the adjusting member 515 to work. The adjusting member 515 changes the current intensity of the circuit where the electromagnet 35 is located, thereby adjusting the attraction of the electromagnet 35 to the iron sheet 34.

[0050] The adjusting member 515 includes a transmission cylinder 516 fixedly connected to the bottom of the movable disk 513, a pull rope 517 fixedly connected to the outside of the transmission cylinder 516, a guide frame 518 fixedly connected to the outside of the fixed cylinder 52, the guide frame 518 adjusts the direction of the pull rope 517, the pull rope 517 is slidably connected to the inner wall of the guide frame 518, the end of the pull rope 517 away from the transmission cylinder 516 is fixedly connected to an insulating plate 519, a placement box 520 is fixedly connected to the outside of the fixed cylinder 52, the insulating plate 519 is slidably connected to the inner wall of the placement box 520, a compression spring 521 is fixedly connected to the outside of the insulating plate 519, the compression spring 521 is fixed to the inner wall of the placement box 520, a sliding rheostat 522 is installed on the inner wall of the placement box 520, the insulating plate 519 is fixed to the slider of the sliding rheostat 522, and the sliding rheostat 522 is connected in series with the circuit where the electromagnet 35 is located.

[0051] When the movable disk 513 moves upward along the surface of the rotating rod 59, the movable disk 513 drives the transmission cylinder 516 to move upward, the transmission cylinder 516 pulls the pull rope 517, and the pull rope 517 drives the insulating plate 1 519 to slide along the inner wall of the placement box 520. The insulating plate 1 519 stretches the compression spring 521. When the insulating plate 1 519 slides along the inner wall of the placement box 520, it drives the slider in the sliding rheostat 1 522 to move, thereby adjusting the resistance value of the sliding rheostat 1 522. Multiple electromagnets 35 are connected in parallel with each other, and the sliding rheostat 1 522 is connected in series in the circuit of multiple electromagnets 35 in parallel. Therefore, when the movable disk 513 moves upward, the resistance value of the sliding rheostat 1 522 decreases, and the current intensity input by the electromagnet 35 increases, so that the electromagnet 35 attracts the iron sheet 34 to move closer, thereby increasing the aperture of the spray hole 20.

[0052] The tower height detection member 57 includes a rotating shaft 523 fixed to the outside of the rotating frame 53, the rotating shaft 523 is rotatably connected to the inner wall of the support 51, the rotating shaft 523 is installed at the axial center of the rotating frame 53, the outer side of the rotating shaft 523 is fixedly connected to a transmission gear 1 524, the outer side of the transmission gear 1 524 is provided with a transmission gear 2 525, the end of the transmission gear 2 525 is fixedly connected to a transmission gear 3 526, the transmission gear 3 526 and the transmission gear 2 525 rotate coaxially, the number of teeth of the transmission gear 2 525 is greater than the number of teeth of the transmission gear 1 524, the number of teeth of the transmission gear 3 526 is less than the number of teeth of the transmission gear 2 525, and the outer side of the transmission gear 3 526 is meshed with the outer gear 1 A transmission plate 527 is provided, which is slidably connected to the inner wall of the support 51. An insulating plate 2 528 is fixedly connected to the outer side of the transmission plate 527. A sliding rheostat 2 529 is installed on the inner wall of the support 51. The insulating plate 2 528 is connected to the slider inside the sliding rheostat 2 529. The sliding rheostat 2 529 is connected in series to the circuit where the electromagnet 35 is located. The sliding rheostat 2 529 is connected in series to the circuit where the sliding rheostat 1 522 is located. The sliding rheostat 1 522 adjusts the resistance value according to the water flow rate, and the sliding rheostat 2 529 adjusts the resistance value according to the tower arm height. After the two are connected in series, they jointly control the input current intensity of the electromagnet 35 to achieve multi-factor linkage adjustment.

[0053] When the height of the tower boom increases, the height of the spray pipe 2 increases, thereby pulling the water pipe 55. Since the water pipe 55 is spirally wound on the outside of the rotating frame 53, when the height of the spray pipe 2 increases, the water pipe 55 will pull the rotating frame 53 to rotate, thereby releasing the water pipe 55 spirally wound on the outside of the rotating frame 53. The rotation of the rotating frame 53 drives the connecting pipe 54 to rotate, and the connecting pipe 54 rotates on the inner wall of the fixed cylinder 52. The rotation of the rotating frame 53 drives the rotating shaft 523 to rotate, and the rotating shaft 523 drives the transmission gear 1 524 to rotate, and the transmission gear 1 524 drives the transmission gear 2 525 engaged on the outside to rotate.

[0054] On a tower arm with a height of 30 meters, the normal working water pressure of the sprinkler system is 0.3 MPa, and a water hammer pressure of 1 MPa may be generated when the valve is closed; when the tower arm is raised to 50 meters, the working water pressure becomes 0.5 MPa, and the water hammer pressure generated by the valve closing at this time may reach 1.5 MPa or even higher. Therefore, in this application, the number of teeth of the transmission gear 2 525 is greater than that of the transmission gear 1 524. Therefore, when the rotating frame 53 rotates multiple circles, the transmission gear 2 525 can only rotate one circle. The rotation of the transmission gear 2 525 drives the coaxial rotating The transmission gear three 526 rotates, and the transmission gear three 526 drives the transmission plate 527 to slide on the inner wall of the support 51. The transmission plate 527 drives the insulating plate two 528 to move, and the insulating plate two 528 drives the slider in the sliding rheostat two 529 to move. Because the static water pressure is proportional to the height, when the height of the tower arm increases, the resistance of the sliding rheostat two 529 decreases, so that the current in the circuit increases and the aperture of the spray hole 20 increases, thereby reducing the continuous pressure of the fluid dynamic pressure on the pipeline and reducing the risk of water hammer impact damage to the pipeline, valves and equipment.

[0055] The pressure stabilizing mechanism 6 includes two storage tanks 60, which are respectively located at the tail end and the middle of the spray pipe 2. The storage tanks 60 are connected to the spray pipe 2. A rubber airbag 61 is installed inside the storage tank 60. The rubber airbag 61 divides the storage tank 60 into two parts, the upper part of the storage tank 60 is an air cavity 62, and the lower part of the storage tank 60 is a water cavity 63 connected to the spray pipe 2.

[0056] When the water pump 4 is turned off, the water flow velocity instantly becomes zero, and its kinetic energy is converted into pressure energy, generating water hammer pressure. The water flow generates an instantaneous high-pressure shock wave due to inertia, and the high-pressure water in the spray pipe 2 will flow into the water cavity 63 of the storage tank 60, pushing the rubber airbag 61 to expand toward the air cavity 62. The rubber airbag 61 squeezes the air cavity 62, and the air is compressed and the volume shrinks. The kinetic energy of the water flow is converted into the elastic potential energy of the air, thereby absorbing the energy of the pressure wave and reducing the pressure peak in the pipeline. When the water hammer pressure wave decays, the compressed air expands, pushing the rubber airbag 61 to reset, and slowly releasing the stored energy back to the pipeline, avoiding secondary water hammer caused by a sudden pressure drop and reducing the impact force transmitted to the base of the tower arm.

[0057] Example 2

[0058] In the second embodiment, the other structures remain unchanged. The difference from the first embodiment is that a solenoid valve 64 is installed at the connection between the storage tank 60 in the middle and the spray pipe 2, and a limit switch 65 is installed on the inner wall of the support 51. Since the outer diameter circumference of the rotating frame 53 is fixed, the rotation speed of the rotating frame 53 is related to the height of the tower boom. Therefore, when the number of rotations of the rotating frame 53 causes the tower boom to reach 50 meters, the number of rotations of the rotating frame 53 is transmitted through the transmission gear 1 524, the transmission gear 2 525 and the transmission gear 3 526, so that the movement distance of the transmission plate 527 just triggers the limit switch 65. After the limit switch 65 is triggered, the solenoid valve 64 is controlled to open, so that the storage tank 60 in the middle is connected to the spray pipe 2. When the height is less than 50 meters, only the storage tank 60 at the end of the tower boom is in a connected state. This avoids the total volume of the air cavity 62 being too large when the tower boom is low, which prevents the water hammer pressure wave from being excessively dispersed and absorbed, thereby reducing the stability of the water flow in the pipeline and causing the problem of "excessive air pressure fluctuation".

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dust removal spray device for construction engineering, comprising: water storage tanks; It is characterized in that: it also includes a spray pipe, and a plurality of spray holes are opened at the bottom of the spray pipe; An adjusting mechanism is located on the inner wall of the spray pipe and adjusts the size of the spray hole according to the water pressure and the height of the tower arm; a water pump, the water pump being connected to the water storage tank; A conveying mechanism, the conveying mechanism being connected to the water pump and the spray pipe respectively, and delivering water to the spray pipe. The conveying mechanism detects the water flow velocity in real time and controls the regulating mechanism to operate when the water flow velocity increases, so that the regulating mechanism increases the size of the spray hole. The conveying mechanism also adaptively adjusts the water delivery height when the tower arm is raised, and controls the regulating mechanism to operate when adjusting the water delivery height. a pressure stabilizing mechanism, the pressure stabilizing mechanism being in communication with the spray pipe and absorbing the energy of the water hammer pressure wave when spraying stops; The adjustment mechanism includes a baffle slidably connected to the inner wall of the spray pipe, the baffle blocking part of the spray hole, a connecting rod fixedly connected to the outer side of the baffle, a traction member is provided at the end of the connecting rod away from the baffle, and a return spring is provided on the outer side of the connecting rod, one end of the return spring is fixed to the baffle, and the other end of the return spring is fixed to the inner wall of the spray pipe; The traction member includes an iron sheet fixedly connected to the end of the connecting rod away from the baffle, and an electromagnet is installed on the inner wall of the spray pipe, and the electromagnet is located outside the iron sheet; The conveying mechanism includes a water inlet pipe connected to the water pump, a support is provided on the outer side of one end of the water inlet pipe away from the water pump, a fixed cylinder is fixedly connected to the inner wall of the support, the fixed cylinder is connected to the water inlet pipe, the inner wall of the support is rotatably connected to the rotating frame, the inner wall of the rotating frame is fixedly connected to a connecting pipe, the connecting pipe is L-shaped, one end of the connecting pipe is sealed and rotatably connected to the inner wall of the fixed cylinder, the other end of the connecting pipe is threadedly connected to a water pipe on the outer side, the water pipe is spirally wound around the outside of the rotating frame, the water pipe is connected to the spray pipe at one end away from the connecting pipe, a flow velocity detection component for detecting the water flow velocity is provided on the inner wall of the fixed cylinder, and a tower height detection component for detecting the height of the tower arm is provided on the outer side of the rotating frame; The tower height detection component includes a rotating shaft fixed to the outside of the rotating frame, the rotating shaft is rotatably connected to the inner wall of the support, the rotating shaft is installed at the axial center of the rotating frame, the outside of the rotating shaft is fixedly connected to a transmission gear 1, the outside of the transmission gear 1 is provided with a transmission gear 2, the two ends of the transmission gear are fixedly connected to a transmission gear 3, the transmission gear 3 rotates coaxially with the transmission gear 2, the outside of the transmission gear 3 is meshed with a transmission plate, the transmission plate is slidably connected to the inner wall of the support, the outside of the transmission plate is fixedly connected to an insulating plate 2, a sliding rheostat 2 is installed on the inner wall of the support, the insulating plate 2 is connected to the slider in the sliding rheostat 2, and the sliding rheostat 2 is connected in series with the circuit where the electromagnet is located.

2. The dust removal spray device for construction engineering according to claim 1, characterized in that: The flow rate detection component includes an impeller located on the inner wall of the fixed cylinder, the impeller rotates and is sealed with the inner wall of the fixed cylinder, one end of the impeller passes through the inner wall of the fixed cylinder and is fixedly connected to a rotating rod, a fixed disk is fixedly connected to the outside of the rotating rod, both sides of the fixed disk are rotatably connected to swing arms, the swing arm is fixedly connected to one end of the fixed disk, a movable disk is slidably connected to the outside of the rotating rod, both sides of the movable disk are rotatably connected to pull rods, the pull rod is rotatably connected to the swing arm at one end away from the movable disk, and an adjustment component is provided at the bottom of the movable disk for adjusting the size of the electromagnetic magnetic field according to the displacement of the movable disk.

3. The dust removal spray device for construction engineering according to claim 2, characterized in that: The adjusting member includes a transmission cylinder fixedly connected to the bottom of the movable disk, a pull rope fixedly connected to the outside of the transmission cylinder, a guide frame fixedly connected to the outside of the fixed cylinder, the pull rope is slidably connected to the inner wall of the guide frame, an insulating plate 1 is fixedly connected to the end of the pull rope away from the transmission cylinder, a placement box is fixedly connected to the outside of the fixed cylinder, the insulating plate 1 is slidably connected to the inner wall of the placement box, a compression spring is fixedly connected to the outside of the insulating plate 1, the compression spring is fixed to the inner wall of the placement box, a sliding rheostat 1 is installed on the inner wall of the placement box, the insulating plate 1 is fixed to the sliding piece of the sliding rheostat 1, and the sliding rheostat 1 is connected in series with the circuit where the electromagnet is located.

4. The dust removal spray device for construction engineering according to claim 1, characterized in that: The number of teeth of the transmission gear 2 is greater than that of the transmission gear 1, and the number of teeth of the transmission gear 3 is less than that of the transmission gear 2.

5. The dust removal spray device for construction engineering according to claim 1, characterized in that: The pressure stabilizing mechanism includes two storage tanks, which are respectively located at the tail end and the middle of the spray pipe. The storage tanks are connected to the spray pipe. A rubber airbag is installed inside the storage tank. The rubber airbag divides the storage tank into two parts, the upper part of the storage tank is an air cavity, and the lower part of the storage tank is a water cavity connected to the spray pipe.

6. The dust removal spray device for construction engineering according to claim 5, characterized in that: A solenoid valve is installed at the connection point between the storage tank and the spray pipe in the middle, and a travel switch is installed on the inner wall of the support.

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