Dedusting spraying device for construction site

Abstract

The utility model provides a dust removal spraying device for a construction site, which comprises a box body, a placing groove with an upward opening is arranged at the top of the box body, a water tank is fixedly arranged in the placing groove, a gun fog machine is arranged above the box body, a nozzle is arranged on the gun fog machine, the water tank is connected with the gun fog machine through a water pipe, and the water tank is connected with the gun fog machine through a water pipe. The nozzle is used for spraying water; a storage groove with a backward opening is formed in the rear side of the box body; in the implementation process, through the arrangement of the intermittent rotating mechanism and the protection assembly, the gun fog machine can move left and right through the intermittent rotating mechanism, the spraying direction of the gun fog machine is changed, meanwhile, intermittent movement can be achieved through the intermittent rotating mechanism, the practicability of the gun fog machine is improved, and a user can use the gun fog machine conveniently; and the protection assembly can protect the nozzle to prevent impurities from entering and blocking the nozzle when the nozzle is not used, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of construction sites, in particular to a dust removal spray device for construction sites. Background Art

[0002] A large amount of dust will be generated at the construction site during the construction process. In order to suppress the dust, protect the health and safety of construction workers, and reduce pollution to the environment as much as possible, a dust removal spray device that can capture dust suspended in the air and perform passive dust reduction is generally required during the construction process to meet the requirements of environmentally friendly construction.

[0003] Application number: CN207056201U discloses a dust removal device for construction sites. Through a telescopic main rod and a telescopic sub-rod, the height of the spray body can be changed by the telescopic main rod and the telescopic sub-rod, and then the working position of the spray body can be changed to improve the dust removal effect of the device. A second hydraulic rod is fixed on the telescopic main rod, and the angle of the telescopic main rod can be changed by the second hydraulic rod, thereby increasing the working range of the entire device and improving the working efficiency of the device.

[0004] Although the above patent can adjust the fog machine during implementation, it can only be adjusted up and down, and cannot be adjusted left and right or move intermittently, which makes the fog machine less practical during use and unable to meet the dust reduction needs of existing construction sites. Utility Model Content

[0005] The purpose of the utility model is to provide a dust removal spray device for construction sites, aiming to solve the problem in the prior art that left-right adjustment and intermittent movement are impossible, making the cannon fog machine less practical during use and unable to meet the dust reduction needs of existing construction sites.

[0006] To achieve the above object, the utility model adopts the following technical solution: the dust removal spray device for construction sites comprises a box body, a placement groove with an opening facing upward is opened on the top of the box body, a water tank is fixedly arranged in the placement groove, a cannon fog machine is arranged above the box body, a nozzle is arranged on the cannon fog machine, the water tank is connected to the cannon fog machine through a water pipe, and the nozzle is used to spray water;

[0007] The rear side of the box body is provided with a storage slot with an opening facing backwards, and an intermittent rotating mechanism is provided in the storage slot. A vertical rod extending in the up-down direction is provided on the intermittent rotating mechanism. A rotating hole that is transparent up and down is provided on the top of the box body. The vertical rod rotates through the rotating hole and is connected to a connecting member. The intermittent rotating mechanism is used to drive the connecting member to rotate intermittently.

[0008] The connecting member is drivingly connected to the outer side of the cannon fog machine, and the connecting member is used to lock the direction of the cannon fog machine.

[0009] Preferably, the intermittent rotation mechanism comprises a second connecting rod, a first connecting rod, an arc-shaped rack, a sector block, a gear and a cylinder;

[0010] The inner top wall of the storage tank is fixedly provided with a first driving device arranged vertically, the second connecting rod is fixedly sleeved on the output shaft of the first driving device, and the side of the second connecting rod away from the first driving device is hingedly connected to the first connecting rod, and the second connecting rod is used to drive the first connecting rod to rotate when the second connecting rod rotates;

[0011] The cylinder is fixed on the inner bottom wall of the storage tank, the sector block is drivingly connected to the cylinder, both ends of the circumferential side of the sector block are fixed with stoppers, the circumferential side of the sector block is provided with a convex groove, a convex block is fixed on the side of the arc-shaped rack close to the sector block, the convex block is slidably arranged in the convex groove, the convex groove is located between the two stoppers, and the two stoppers are used to limit the moving trajectory of the arc-shaped rack;

[0012] One end of the connecting rod 1 away from the connecting rod 2 is hingedly connected to the fan-shaped block, and when the connecting rod 1 rotates, it is used to drive the fan-shaped block to rotate;

[0013] The vertical rod is rotatably arranged on the inner bottom wall of the storage tank, the gear is fixedly arranged on the vertical rod, the gear is meshed with the arc-shaped rack, and when the arc-shaped rack abuts against one of the stoppers, the arc-shaped rack can drive the gear to rotate intermittently.

[0014] Preferably, a limiting clamp wheel is fixedly provided on the cylinder, and a circular ring sleeve is fixedly provided on the sector block, and the circular ring sleeve is sleeved on the limiting clamp wheel.

[0015] Preferably, a retaining rod is fixedly provided on the inner side wall of the storage tank, and the retaining rod is rotatably connected to the output shaft of the first driving device;

[0016] The retaining rod is located below the first connecting rod.

[0017] Preferably, a rotating groove with an upward opening is provided on the inner bottom wall of the storage groove, the rotating groove is communicated with the storage groove, and the rotating groove is a conical groove structure;

[0018] The round block is located in the rotating groove, and the bottom of the vertical rod passes through the storage groove and is fixedly connected with the top of the round block.

[0019] Preferably, a detachable protective component is provided on the side of the cannon fog machine close to the nozzle, and a plurality of connecting blocks are fixedly provided on the outside of the cannon fog machine and are arranged in a circular array with the cannon fog machine as the center. The protective component and the connecting blocks cooperate with each other to protect the nozzle.

[0020] Preferably, the protective assembly comprises a protective shell, a slider, a sponge block and a positioning rod, the slider is multiple and is fixed on the protective shell in an array with intervals around the protective shell as the center, and the slider is located outside the connecting block;

[0021] The sponge block is located between the protective shell and the cannon fog machine, and the sponge block is located in the space surrounded by a plurality of sliders. A plurality of through holes are opened on the sponge block. When the sponge block is against the end of the cannon fog machine, the nozzle is inserted into the through hole.

[0022] The slider is provided with a transparent jack, the connecting block is provided with a slot opening outward, the slider is slidably inserted outside the connecting block, and when the jack and the slot correspond to each other, the locking rod can pass through the jack and be inserted in the slot.

[0023] Preferably, a plurality of rollers spaced apart in a rectangular array are provided at the bottom of the box.

[0024] The beneficial effects are: 1. During the implementation of the utility model, the intermittent rotating mechanism and the protective component are set up, so that the fog machine can move left and right through the intermittent rotating mechanism to change the spray direction of the fog machine. At the same time, the intermittent rotating mechanism can achieve intermittent movement, thereby increasing the practicality of the fog machine and facilitating the use of users. The protective component can protect the nozzle to prevent debris from entering and causing nozzle clogging when not in use, making it easy to use.

[0025] 2. During the implementation of the utility model, the arc-shaped rack and the block make the arc-shaped rack move when the fan-shaped block moves left and right. Since the length of the arc-shaped rack is shorter than that of the fan-shaped plate and the meshing connection of the gears makes the arc-shaped rack have a certain clearance during the movement, so that the arc-shaped rack can move intermittently. Under the action of the limit block, the arc-shaped rack moves again with the fan-shaped plate, so that the cannon fog machine can move intermittently.

[0026] 3. By setting the connecting components, the angle of the up and down directions of the fog machine can be adjusted. When the nut is loosened, the direction of the fog machine can be adjusted. After adjustment, tighten the nut to lock the direction of the fog machine to improve the spraying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the utility model.

[0028] Figure 2 It is a structural schematic diagram of a cannon fog machine in a specific embodiment of the utility model.

[0029] Figure 3 It is a structural schematic diagram of a rectangular groove cross-section in a specific embodiment of the utility model.

[0030] Figure 4 It is a structural schematic diagram of a cross-section of a circular annular groove in a specific embodiment of the utility model.

[0031] Figure 5 It is a structural schematic diagram of the intermittent rotation mechanism transmission in a specific embodiment of the utility model.

[0032] Figure 6 It is a structural schematic diagram of the disassembled intermittent rotating mechanism in a specific embodiment of the utility model.

[0033] Figure 7 It is a structural schematic diagram of the distribution of protective shells in a specific embodiment of the utility model.

[0034] In the figure: 1. box body; 2. fog machine; 3. water tank; 4. roller; 51. storage tank; 52. rotating hole; 53. vertical rod; 54. gear; 55. cylinder; 56. sector block; 57. arc rack; 58. connecting rod one; 59. connecting rod two; 510. first driving device; 511. circular ring; 512. retaining rod; 513. limiting clamping wheel; 514. round block; 515. rotating groove; 516. stopper; 61. connecting block; 62. slider; 63. protective shell; 64. sponge block; 65. through hole; 66. jack; 67. clamping rod; 7. nozzle. DETAILED DESCRIPTION

[0035] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0036] like Figure 1-Figure 7 As shown, a dust removal spray device for construction sites, through the intermittent rotating mechanism and the protective component, can make the cannon fog machine 2 move left and right through the intermittent rotating mechanism to change the spray direction of the cannon fog machine 2, and at the same time can achieve intermittent movement through the intermittent rotating mechanism, thereby increasing the practicality of the cannon fog machine 2 and facilitating the use of users. Specifically, it includes a box body 1, the top of the box body 1 is provided with a placement groove with an opening facing upward, a water tank 3 is fixedly arranged in the placement groove, the water tank 3 is provided with a water pump, the water pump is driven to start, so that the water pump draws the water in the water tank 3 into the cannon fog machine 2, the cannon fog machine 2 is arranged above the box body 1, the cannon fog machine 2 is provided with a nozzle 7, the water tank 3 is connected to the cannon fog machine 2 through a water pipe, the nozzle 7 is used to spray water, and then the water in the cannon fog machine 2 is sprayed out through the nozzle 7.

[0037] The bottom of the box 1 is provided with a plurality of rollers 4 arranged at intervals in a rectangular array (the rollers 4 are universal wheels, which can both travel and adjust the direction of travel). The arrangement of the rollers 4 allows the box 1 to be moved to the area of ​​use without manual movement, which greatly reduces the labor intensity of workers.

[0038] By setting the connecting component, the angle of the cannon fog machine 2 in the up and down direction can be adjusted. When the nut is loosened, the direction of the cannon fog machine 2 can be adjusted. After the adjustment, the nut is tightened to lock the direction of the cannon fog machine 2 to improve the spraying effect. Specifically, a storage tank 51 with an opening facing backward is provided on the rear side of the box body 1, and an intermittent rotating mechanism is provided in the storage tank 51. A vertical rod 53 extending in the up and down direction is provided on the intermittent rotating mechanism. A rotating hole 52 that is transparent from top to bottom is provided on the top of the box body 1. The vertical rod 53 rotates A connecting member (the connecting member includes a fixed plate, a support rod, a bolt and a nut, and there are two support rods, two bolts and two nuts, which are symmetrically arranged) is transmitted and connected through the rotating hole 52. The intermittent rotating mechanism is used to drive the connecting member to rotate intermittently. The fixed plate is fixed on the top of the vertical rod 53. The two support rods are fixed on the top of the fixed plate and are vertically arranged. The two support rods are provided with transparent connecting holes, and the two bolts are fixed on the outside of the cannon fog machine 2. The bolts are inserted into the connecting holes on the support rods, and the nuts are threadedly connected to the bolts.

[0039] When the angle of the fog machine 2 needs to be adjusted, first loosen the nut from the bolt, then manually adjust the angle of the fog machine 2, and after the angle is adjusted, the nut can be screwed on the bolt, and the nut can be squeezed on the support rod to clamp and lock the fog machine 2, so as to achieve the purpose of locking the flipping angle of the fog machine 2.

[0040] By setting up the intermittent rotation mechanism, the cannon fog machine 2 can perform intermittent movement. Specifically, the intermittent rotation mechanism includes connecting rod 2 59, connecting rod 1 58, arc-shaped rack 57, fan-shaped block 56, gear 54 and cylinder 55.

[0041] A first driving device 510 (the first driving device 510 is a first driving self-locking motor) is fixedly provided on the inner top wall of the storage tank 51, and a connecting rod 2 59 is fixedly sleeved on the output shaft of the first driving device 510. The connecting rod 2 59 is hingedly connected to the connecting rod 1 58 on the side away from the first driving device 510. When the connecting rod 2 59 rotates, it drives the connecting rod 1 58 to rotate, driving the first driving device 510 to start, so that the output shaft of the first driving device 510 drives the connecting rod 2 59 to rotate, and when the connecting rod 2 59 rotates, it can drive the connecting rod 1 58 to rotate.

[0042] The cylinder 55 is fixed on the inner bottom wall of the storage tank 51, and the fan-shaped block 56 is connected to the cylinder 55 in a transmission manner. Stoppers 516 are fixedly arranged at both ends of the peripheral side surface of the fan-shaped block 56. A convex groove is provided on the peripheral side surface of the fan-shaped block 56. A convex block is fixedly arranged on one side of the arc-shaped rack 57 close to the fan-shaped block 56. The arrangement of the convex block and the convex groove ensures that the arc-shaped rack 57 will not get stuck or shake when sliding, and the convex groove can limit the convex block and limit the sliding of the arc-shaped rack 57. The convex block is slidably arranged in the convex groove, and the convex groove is located between the two stoppers. The two blocks 516 are used to limit the moving trajectory of the arc-shaped rack 57. During the reciprocating swing of the fan-shaped block 56, the fan-shaped block 56 will swing by itself first, and when the fan-shaped block 56 swings to the point where the block 516 abuts against one side of the arc-shaped rack 57, the swing of the fan-shaped block 56 will drive the arc-shaped rack 57 to swing together. Similarly, when the fan-shaped block 56 swings in the opposite direction under the action of the connecting rod 58, the fan-shaped block 56 will swing in the opposite direction first, and when the block 516 abuts against the other side of the arc-shaped rack 57, it will drive the arc-shaped rack 57 to swing in the opposite direction.

[0043] One end of the connecting rod 1 58 away from the connecting rod 2 59 is hingedly connected to the fan-shaped block 56. When the connecting rod 1 58 rotates, it is used to drive the fan-shaped block 56 to rotate. When the connecting rod 1 58 rotates, it drives the fan-shaped block 56 to swing back and forth.

[0044] The vertical rod 53 is rotatably arranged on the inner bottom wall of the storage tank 51, and the gear 54 is fixed on the vertical rod 53. The gear 54 and the arc-shaped rack 57 are meshed with each other. When the arc-shaped rack 57 abuts against one of the blocks, the arc-shaped rack 57 can drive the gear 54 to rotate intermittently. When the arc-shaped rack 57 is driven to swing, since the gear 54 and the arc-shaped rack 57 are meshed with each other, it can drive the gear 54 to rotate. When the gear 54 rotates, it drives the vertical rod 53 to rotate.

[0045] A limiting clamp wheel 513 is fixedly provided on the cylinder 55 , and a circular ring sleeve 511 is fixedly provided on the sector block 56 . The circular ring sleeve 511 is sleeved on the limiting clamp wheel 513 .

[0046] A retaining rod 512 is fixedly provided on the inner wall of the storage tank 51 , and the retaining rod 512 is rotatably connected to the output shaft of the first driving device 510 . The arrangement of the retaining rod 512 can support the output shaft of the first driving device 510 .

[0047] The retaining rod 512 is located below the connecting rod 58. The retaining rod 512 is located below the connecting rod 58, so that when the connecting rod 58 rotates, there will be no conflict with the retaining rod 512, avoiding the problem of the connecting rod 58 getting stuck during rotation, and greatly improving the intermittent rotation effect of the vertical rod 53.

[0048] A rotating groove 515 with an opening facing upward is formed on the inner bottom wall of the storage groove 51 . The rotating groove 515 is communicated with the storage groove 51 . The rotating groove 515 is a concave groove structure.

[0049] The round block 514 is located in the rotating groove 515, and the bottom of the vertical rod 53 passes through the storage groove 51 and is fixedly connected to the top of the round block 514. The setting of the round block 514 can support and limit the vertical rod 53 to prevent the vertical rod 53 from tilting during the rotation process.

[0050] The connecting component is drivingly connected to the outer side surface of the cannon fog machine 2, and the connecting component is used to lock the direction of the cannon fog machine 2.

[0051] The protective component can protect the nozzle 7 to prevent debris from entering and clogging the nozzle 7 when not in use, making it easy to use. Specifically, a detachable protective component is provided on the side of the fog machine 2 close to the nozzle 7, and a plurality of connecting blocks 61 are fixedly provided on the outer side of the fog machine 2 and are arranged in a circular array with the fog machine 2 as the center. The protective component and the connecting block 61 cooperate with each other to protect the nozzle 7. When the nozzle 7 needs to be protected, the protective component is installed on the fog machine 2 to protect the nozzle 7.

[0052] The protective assembly includes a protective shell 63, a slider 62, a sponge block 64 and a locking rod 67. There are multiple sliders 62, which are fixed on the protective shell 63 in a circular array with the protective shell 63 as the center. The slider 62 is located on the outside of the connecting block 61. Since the circle formed by the slider 62 is larger than the circle formed by the connecting block 61, the slider 62 can be inserted into the outside of the connecting block 61 when inserted.

[0053] The sponge block 64 is located between the protective shell 63 and the cannon fog machine 2, and the sponge block 64 is located in the space surrounded by multiple sliders 62. Multiple transparent through holes 65 are opened on the sponge block 64. When the sponge block 64 is against the end of the cannon fog machine 2, the nozzle 7 is inserted in the through hole 65, the sponge block 64 is placed in the protective shell 63, and then the slider 62 is mounted on the outside of the connecting block 61, and the nozzle 7 is inserted in the through hole 65.

[0054] A transparent socket 66 is provided on the slider 62, and a slot opening facing outward is provided on the connecting block 61. The slider 62 is slidably inserted on the outside of the connecting block 61, and when the socket 66 and the slot correspond to each other, the locking rod 67 can pass through the socket 66 and be inserted in the slot. After the assembly is completed, the socket 66 and the slot correspond to each other, and then the locking rod 67 is passed through the socket 66 and inserted in the slot, so that the protective shell 63 is fixed on the cannon fog machine 2 to protect the nozzle 7.

[0055] Working principle: Before use, the box 1 can be moved to the area of ​​use by setting the roller 4, and no manual moving is required, which greatly reduces the labor intensity of workers.

[0056] After moving into the area, first loosen the nut from the bolt, then manually adjust the angle of the fog machine 2, and after the angle is adjusted, screw the nut on the bolt, and make the nut squeeze the support rod so that the fog machine 2 is clamped and locked, so as to achieve the purpose of locking the flipping angle of the fog machine 2, and then drive the first drive device 510 to start, so that the output shaft of the first drive device 510 drives the connecting rod 2 59 to rotate, and when the connecting rod 2 59 rotates, it can drive the connecting rod 1 58 to rotate, and when the connecting rod 1 58 rotates, it will drive the fan-shaped block 56 to swing back and forth. During the reciprocating swing of the fan-shaped block 56, the fan-shaped block 56 will swing by itself first, and when the fan-shaped block 5 When the swing 516 is until the stopper abuts against one side of the arc-shaped rack 57, the swing of the sector block 56 will drive the arc-shaped rack 57 to swing together. Similarly, when the sector block 56 swings in the opposite direction under the action of the connecting rod 58, the sector block 56 itself will swing in the opposite direction first. When the stopper 516 abuts against the other side of the arc-shaped rack 57, the arc-shaped rack 57 will be driven to swing in the opposite direction. When the arc-shaped rack 57 is driven to swing, since the gear 54 and the arc-shaped rack 57 are meshed with each other, the gear 54 can be driven to rotate. When the gear 54 rotates, the vertical rod 53 is driven to rotate intermittently. When the vertical rod 53 rotates, it drives the fixed plate to rotate, so that the cannon fog machine 2 is driven to rotate intermittently.

[0057] When it is necessary to protect the nozzle 7, the sponge block 64 is placed in the protective shell 63, and then the slider 62 is mounted on the outside of the connecting block 61, and the nozzle 7 is inserted in the through hole 65. After the assembly is completed, the socket 66 and the slot correspond to each other, and then the positioning rod 67 is passed through the socket 66 and inserted in the slot, so that the protective shell 63 is fixed on the cannon fog machine 2 to protect the nozzle 7.

[0058] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is limited by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A dust removal spray device for construction sites, characterized in that: The invention comprises a box body (1), the top of the box body (1) is provided with a placement groove with an opening facing upward, a water tank (3) is fixedly arranged in the placement groove, a fog machine (2) is arranged above the box body (1), a nozzle (7) is arranged on the fog machine (2), the water tank (3) is connected to the fog machine (2) through a water pipe, and the nozzle (7) is used to spray water; The rear side of the box body (1) is provided with a storage groove (51) with an opening facing backwards, an intermittent rotation mechanism is provided in the storage groove (51), a vertical rod (53) extending in the up-down direction is provided on the intermittent rotation mechanism, a rotation hole (52) which is transparent from top to bottom is provided on the top of the box body (1), the vertical rod (53) rotates through the rotation hole (52) to be transmission-connected with a connecting member, and the intermittent rotation mechanism is used to drive the connecting member to intermittently rotate; The connecting member is drivingly connected to the outer side surface of the cannon fog machine (2), and the connecting member is used to lock the orientation of the cannon fog machine (2).

2. A dust removal spray device for construction sites according to claim 1, characterized in that: The intermittent rotation mechanism comprises a second connecting rod (59), a first connecting rod (58), an arc-shaped rack (57), a sector block (56), a gear (54) and a cylinder (55); A first driving device (510) arranged vertically is fixedly provided on the inner top wall of the storage tank (51); the second connecting rod (59) is fixedly sleeved on the output shaft of the first driving device (510); a side of the second connecting rod (59) away from the first driving device (510) is hingedly connected to the first connecting rod (58); when the second connecting rod (59) rotates, it drives the first connecting rod (58) to rotate; The cylinder (55) is fixedly arranged on the inner bottom wall of the storage tank (51); the sector block (56) is drivingly connected to the cylinder (55); both ends of the peripheral side surface of the sector block (56) are fixedly provided with stoppers (516); a convex groove is provided on the peripheral side surface of the sector block (56); a convex block is fixedly arranged on one side of the arc-shaped rack (57) close to the sector block (56); the convex block is slidably arranged in the convex groove; the convex groove is located between two stoppers; and the two stoppers (516) are used to limit the moving track of the arc-shaped rack (57); One end of the connecting rod 1 (58) away from the connecting rod 2 (59) is hingedly connected to the fan-shaped block (56), and when the connecting rod 1 (58) rotates, it drives the fan-shaped block (56) to rotate; The vertical rod (53) is rotatably mounted on the inner bottom wall of the storage tank (51); the gear (54) is fixedly mounted on the vertical rod (53); the gear (54) and the arc-shaped rack (57) are meshed with each other; when the arc-shaped rack (57) abuts against one of the stoppers, the arc-shaped rack (57) can drive the gear (54) to rotate intermittently.

3. A dust removal spray device for construction sites according to claim 2, characterized in that: A limiting clamp wheel (513) is fixedly provided on the cylinder (55), and a circular ring sleeve (511) is fixedly provided on the sector block (56), wherein the circular ring sleeve (511) is sleeved on the limiting clamp wheel (513).

4. A dust removal spray device for construction sites according to claim 2, characterized in that: A retaining rod (512) is fixedly provided on the inner side wall of the storage tank (51), and the retaining rod (512) is rotatably connected to the output shaft of the first driving device (510); The retaining rod (512) is located below the first connecting rod (58).

5. A dust removal spray device for construction sites according to claim 2, characterized in that: A rotating groove (515) with an opening facing upward is provided on the inner bottom wall of the storage groove (51), the rotating groove (515) is communicated with the storage groove (51), and the rotating groove (515) is a concave groove structure of a truncated cone; A round block (514) is provided in the rotating groove (515), and the bottom of the vertical rod (53) passes through the storage groove (51) and is fixedly connected to the top of the round block (514).

6. A dust removal spray device for construction sites according to claim 1, characterized in that: A detachable protective component is provided on one side of the cannon fog machine (2) close to the nozzle (7), and a plurality of connecting blocks (61) are fixedly provided on the outer side of the cannon fog machine (2) and arranged in a circular array with the cannon fog machine (2) as the center. The protective component and the connecting blocks (61) cooperate with each other to protect the nozzle (7).

7. A dust removal spray device for construction sites according to claim 6, characterized in that: The protective assembly comprises a protective shell (63), a slider (62), a sponge block (64) and a locking rod (67); the sliders (62) are multiple and are fixed on the protective shell (63) in an array at intervals around the protective shell (63); the sliders (62) are located outside the connecting block (61); The sponge block (64) is located between the protective shell (63) and the cannon fog machine (2), and the sponge block (64) is located in a space surrounded by a plurality of sliders (62). A plurality of through holes (65) are provided on the sponge block (64). When the sponge block (64) abuts against the end of the cannon fog machine (2), the nozzle (7) is inserted into the through hole (65); The slider (62) is provided with a transparent insertion hole (66), and the connecting block (61) is provided with a card slot with an opening facing outwards. The slider (62) is slidably inserted outside the connecting block (61), and when the insertion hole (66) and the card slot correspond to each other, the card rod (67) can pass through the insertion hole (66) and be inserted into the card slot.

8. A dust removal spray device for construction sites according to claim 1, characterized in that: The bottom of the box body (1) is provided with a plurality of rollers (4) arranged at intervals in a rectangular array.

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