Spraying and dust settling device of backhoe excavator

Abstract

The invention relates to the technical field of spraying and dust falling, and particularly discloses a spraying and dust falling device of a backhoe excavator. Comprising an atomization dust falling mechanism; the atomization dust falling mechanism comprises a water storage tank, a first fixing block is arranged on one side of the water storage tank, the bottom of the first fixing block is fixedly connected with the top of a hydraulic push rod, a driving shaft of the hydraulic push rod is fixedly connected with the top of a second fixing block, and one side of the second fixing block is fixedly connected with one side of a square water tank; a water inlet in the top of the square water tank is communicated with the bottom of the water hose, the top of the water hose is communicated with a water outlet of the high-pressure water pump, a water inlet of the high-pressure water pump is communicated with the bottom of the water storage tank, and the top of the atomization circular plate penetrates through the bottom of the square water tank and is fixedly connected with the square water tank. The hydraulic push rod drives the driving shaft to push the second fixing block to drive the square water tank to move so as to adjust the distance from the bucket, so that the atomizing dust-settling mechanism can adjust the distance from the working area of the bucket, and the atomizing dust-settling effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spray dust suppression, and specifically to a spray dust suppression device for a backhoe excavator. Background Art

[0002] A backhoe excavator is the most widely used earth excavation machinery in engineering construction, with characteristics such as flexible operation and fast slewing speed. It is mainly used for the excavation of foundation pits (trenches) or pipe trenches, independent foundation pits, and slopes below the working surface. Since a large amount of dust is generated during the operation of a backhoe excavator, a spray dust suppression device is often required to handle the dust. Spray dust suppression mainly uses high pressure to atomize water or other dust suppressant solutions into tiny water droplets through a nozzle. These tiny water droplets collide with and adsorb the dust, causing the dust to agglomerate and increase in weight, and thus settle to the ground to achieve the purpose of reducing the dust concentration.

[0003] The spray dust suppression device is usually installed near the working area of the backhoe excavator. However, when the existing spray dust suppression device is installed on the backhoe excavator, it is difficult to adjust the distance from the working area, which easily affects the spray dust suppression effect. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a spray dust suppression device for a backhoe excavator, which is achieved through the following technical solutions: A spray dust suppression device for a backhoe excavator, comprising: An atomizing dust suppression mechanism for performing atomizing spray dust suppression treatment on the working area of the bucket of the backhoe excavator; the bucket is sleeved at the bottom of the dipper arm of the backhoe excavator and is rotatably connected to the dipper arm through a rotating bolt, and one side of the dipper arm is fixedly connected to one side of the atomizing dust suppression mechanism; The atomizing dust suppression mechanism includes: A water storage tank with a first fixing block provided on one side; A water passing hose with a high-pressure water pump provided at the top; A square water tank with an atomizing circular plate provided at the bottom; A hydraulic push rod with a second fixing block provided on the driving shaft; One side of the water storage tank is fixedly connected to one side of the first fixing block, the bottom of the first fixing block is fixedly connected to the top of the hydraulic push rod, the driving shaft of the hydraulic push rod is fixedly connected to the top of the second fixing block, one side of the second fixing block is fixedly connected to one side of the square water tank, the water inlet at the top of the square water tank is communicated with the bottom of the water passing hose, the top of the water passing hose is communicated with the water outlet of the high-pressure water pump, the water inlet of the high-pressure water pump is communicated with the bottom of the water storage tank, and the top of the atomizing circular plate penetrates through the bottom of the square water tank and is fixedly connected to the square water tank; One side of the water storage tank is fixedly connected to one side of the stick.

[0005] Furthermore, a diffusion component is fixedly connected to the bottom of the square water tank. A cleaning component is fixedly connected to the outside of the diffusion component. T-slot clamping plates are fixedly connected to both sides of the inner wall of the square water tank. A T-shaped slider is slidably connected to the inner wall of the T-slot clamping plate. A circular baffle is fixedly connected to one side of the T-shaped slider. A retraction spring is fixedly connected to the top of the circular baffle.

[0006] Furthermore, multiple diffusion components are provided, and the multiple diffusion components are distributed at the bottom of the square water tank and are located directly below the atomizing circular plate. Multiple cleaning components are provided, and the multiple cleaning components are distributed outside the diffusion components.

[0007] Furthermore, multiple T-slot clamping plates are provided, and the multiple T-slot clamping plates are distributed on both sides of the inner wall of the square water tank. The top of the retraction spring is fixedly connected to the inner wall of the square water tank.

[0008] Furthermore, the diffusion component includes an externally threaded ring plate. A cross-shaped fixing rod is fixedly connected to the inner wall of the externally threaded ring plate. A circular blocking block is fixedly connected to the bottom of the cross-shaped fixing rod. An internally threaded sleeve plate is sleeved and threadedly connected to the outside of the externally threaded ring plate. A bottom opening circular hole is opened at the bottom of the internally threaded sleeve plate. An externally communicating circular hole is opened on the outer wall of the internally threaded sleeve plate.

[0009] Furthermore, the top of the externally threaded ring plate is fixedly connected to the bottom of the square water tank. The externally threaded ring plate is located directly below the atomizing circular plate. The inner diameter of the externally threaded ring plate matches the outer diameter of the atomizing circular plate. The outer wall of the internally threaded sleeve plate is fixedly connected to one side of the cleaning component.

[0010] Furthermore, multiple externally threaded ring plates are provided, and the multiple externally threaded ring plates are distributed at the bottom of the square water tank. Multiple externally communicating circular holes are provided, and the multiple externally communicating circular holes are distributed on the outer wall of the internally threaded sleeve plate.

[0011] Furthermore, the cleaning component includes a first connecting block. A top circular rod is fixedly connected to the top of the first connecting block. A brush is fixedly connected to the outside of the top circular rod. An upper top spring is fixedly connected to the bottom of the first connecting block. A second connecting block is fixedly connected to the bottom of the upper top spring. A corrugated ring piece is fixedly connected to the top of the second connecting block. A bottom penetrating rod is slidably connected through the second connecting block.

[0012] Furthermore, one side of the first connecting block is slidably connected to the outside of the internally threaded sleeve plate. One side of the second connecting block is fixedly connected to the outside of the internally threaded sleeve plate.

[0013] Furthermore, the top of the waveform ring piece is fixedly connected to the bottom of the first connecting block, and the top of the bottom-mounted through rod is fixedly connected to the bottom of the first connecting block.

[0014] The present invention provides an anti-excavator spray dust reduction device, which has the following beneficial effects: 1. This anti-excavator spray dust reduction device drives the drive shaft through a hydraulic push rod to push the second fixed block to drive the square water tank to move to adjust the distance from the bucket, so that the atomizing dust reduction mechanism can adjust the distance from the working area of the bucket, improving the spray dust reduction effect.

[0015] 2. By arranging a plurality of outer through round holes on the outer side of the inner thread sleeve plate, it is convenient for the atomized droplets inside the diffusion component to diffuse and spray out from the outside, preventing the atomized droplets sprayed from the atomizing round plate from only atomizing and reducing dust in the working area of the bucket and making it difficult to perform atomizing dust reduction treatment on the nearby area.

[0016] 3. By arranging a circular baffle inside the square water tank to resist the water flow, preventing the water flow entering the square water tank from directly passing through the position near the central area of the atomizing round plate and atomizing and spraying out, resulting in poor atomizing spray and uneven dust reduction effect.

[0017] 4. When the brush in the cleaning component rotates and moves upward, it frictionally sweeps the outer surface of the outer thread ring plate, preventing dust particles that are not cleaned up from remaining on the thread surface where the outer thread ring plate is about to be thread-fitted with the inner thread sleeve plate and affecting the assembly effect. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the anti-excavator spray dust reduction device provided by the embodiment of the present invention from one perspective; Figure 2 It is a schematic structural diagram of the anti-excavator spray dust reduction device provided by the embodiment of the present invention from another perspective; Figure 3 It is a schematic structural diagram of the atomizing dust reduction mechanism in the present invention; Figure 4 For Figure 3 The enlarged structural diagram at A in Figure 5 It is a schematic structural diagram of the bottom of the diffusion component in the present invention; Figure 6 It is a schematic side-sectional structural diagram of the diffusion component in the present invention; Figure 7 It is a schematic structural diagram of the diffusion component and the cleaning component in the present invention; Figure 8 It is a schematic side-sectional structural diagram of the cleaning component in the present invention.

[0019] In the figure: 1. Boom; 2. Bucket; 3. Atomizing dust suppression mechanism; 301. Water storage tank; 302. First fixing block; 303. Water passing hose; 304. High-pressure water pump; 305. Square water tank; 306. Atomizing circular plate; 307. Hydraulic push rod; 308. Second fixing block; 309. Diffusion assembly; 310. Cleaning assembly; 311. T-slot clamping plate; 312. T-shaped slider; 313. Circular baffle; 314. Retraction spring; 3091. External thread ring plate; 3092. Cross fixing rod; 3093. Circular plug; 3094. Internal thread sleeve plate; 3095. Bottom open round hole; 3096. External through round hole; 3101. First connecting block; 3102. Top circular rod; 3103. Brush; 3104. Top spring; 3105. Second connecting block; 3106. Wave-shaped ring piece; 3107. Bottom through rod. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 4 , the present invention provides an anti-excavator spray dust suppression device, including: Atomizing dust suppression mechanism 3, the atomizing dust suppression mechanism 3 is used for atomizing and spraying dust suppression treatment on the working area of the bucket 2 of the backhoe excavator; the bucket 2 is sleeved at the bottom of the boom 1 of the backhoe excavator and is rotatably connected to the boom 1 through a rotating bolt, and one side of the boom 1 is fixedly connected to one side of the atomizing dust suppression mechanism 3; Among them, the atomizing dust suppression mechanism 3 includes: Water storage tank 301, a first fixing block 302 is arranged on one side of the water storage tank 301; Water passing hose 303, a high-pressure water pump 304 is arranged at the top of the water passing hose 303; Square water tank 305, an atomizing circular plate 306 is arranged at the bottom of the square water tank 305; Hydraulic push rod 307, a second fixing block 308 is arranged on the driving shaft of the hydraulic push rod 307; One side of the water storage tank 301 is fixedly connected to one side of the first fixing block 302. The bottom of the first fixing block 302 is fixedly connected to the top of the hydraulic push rod 307. The drive shaft of the hydraulic push rod 307 is fixedly connected to the top of the second fixing block 308. One side of the second fixing block 308 is fixedly connected to one side of the square water tank 305. The water inlet at the top of the square water tank 305 is communicated with the bottom of the water passing hose 303. The top of the water passing hose 303 is communicated with the water outlet of the high-pressure water pump 304. The water inlet of the high-pressure water pump 304 is communicated with the bottom of the water storage tank 301. The top of the atomizing circular plate 306 penetrates through the bottom of the square water tank 305 and is fixedly connected to the square water tank 305; One side of the water storage tank 301 is fixedly connected to one side of the stick 1.

[0022] A diffusion assembly 309 is fixedly connected to the bottom of the square water tank 305. A cleaning assembly 310 is fixedly connected to the outside of the diffusion assembly 309. T-slot clamping plates 311 are fixedly connected to both sides of the inner wall of the square water tank 305. A T-shaped slider 312 is slidably connected to the inner wall of the T-slot clamping plate 311. One side of the T-shaped slider 312 is fixedly connected to a circular baffle 313. A retraction spring 314 is fixedly connected to the top of the circular baffle 313; A plurality of diffusion assemblies 309 are provided, and the plurality of diffusion assemblies 309 are distributed at the bottom of the square water tank 305 and are located directly below the atomizing circular plate 306. A plurality of cleaning assemblies 310 are provided, and the plurality of cleaning assemblies 310 are distributed outside the diffusion assembly 309; A plurality of T-slot clamping plates 311 are provided, and the plurality of T-slot clamping plates 311 are distributed on both sides of the inner wall of the square water tank 305. The top of the retraction spring 314 is fixedly connected to the inner wall of the square water tank 305.

[0023] During use, the atomizing dust suppression mechanism 3 sprays and suppresses dust on the bucket 2 and its nearby working area. At the same time, the atomizing dust suppression mechanism 3 can also adjust the spraying distance from the bucket 2 to avoid affecting the spraying and dust suppression effect of the atomizing dust suppression mechanism 3; the high-pressure water pump 304 pumps the water in the water storage tank 301 into the water passing hose 303 and enters the square water tank 305. The water entering the square water tank 305 contacts the circular baffle 313 and diffuses around the circular baffle 313, and is atomized and sprayed out in the diffusion component 309 through the atomizing circular plate 306. The atomized droplets are diffusely atomized and dust suppressed through the diffusion component 309; the hydraulic push rod 307 drives the drive shaft to push the second fixed block 308 to drive the square water tank 305 to move to adjust the distance from the bucket 2, so that the distance between the atomizing dust suppression mechanism 3 and the working area of the bucket 2 is adjustable, improving the spraying and dust suppression effect; when the water flow in the water passing hose 303 surges into the interior of the square water tank 305, it pushes the circular baffle 313 to move downward and pulls the retraction spring 314 to stretch. By arranging the circular baffle 313 inside the square water tank 305 to resist the water flow, it is prevented that the water flow entering the square water tank 305 directly passes through the position near the center area of the atomizing circular plate 306 and is atomized and sprayed out, resulting in poor atomizing spraying and uneven dust suppression effect; when the circular baffle 313 moves downward, it drives the T-shaped circular blocks on both sides to slide along the inner wall of the T-slot clamping plate 311. By arranging the T-slot clamping plate 311 and the T-shaped slider 312 on both sides of the circular baffle 313 to be clamped and matched, the sliding limit of the circular baffle 313 is carried out, preventing the retraction spring 314 from being tilted and bent when the water flow thrust is uneven, affecting the water blocking effect of the circular baffle 313; when the water flow fills the interior of the square water tank 305 and the water flow impact force received by the circular baffle 313 becomes small, the retraction spring 314 drives the circular baffle 313 to move upward to the initial position through the retraction force, preventing the circular baffle 313 from gradually approaching the atomizing circular plate 306 when continuously moving downward and affecting the efficiency of the water flow passing through the atomizing circular plate 306.

[0024] Please refer to Figures 1 - 8, the diffusion component 309 includes an external thread ring plate 3091. The inner wall of the external thread ring plate 3091 is fixedly connected with a cross-shaped fixing rod 3092. The bottom of the cross-shaped fixing rod 3092 is fixedly connected with a circular blocking block 3093. An internal thread sleeve plate 3094 is sleeved and threadedly connected to the outside of the external thread ring plate 3091. A bottom opening round hole 3095 is opened at the bottom of the internal thread sleeve plate 3094. An external through round hole 3096 is opened on the outer wall of the internal thread sleeve plate 3094. The top of the external thread ring plate 3091 is fixedly connected with the bottom of the square water tank 305. The external thread ring plate 3091 is located directly below the atomizing round plate 306. The inner diameter of the external thread ring plate 3091 matches the outer diameter of the atomizing round plate 306. The outer wall of the internal thread sleeve plate 3094 is fixedly connected with one side of the cleaning component 310. There are multiple external thread ring plates 3091, and the multiple external thread ring plates 3091 are distributed at the bottom of the square water tank 305. There are multiple external through round holes 3096, and the multiple external through round holes 3096 are evenly distributed on the outer wall of the internal thread sleeve plate 3094.

[0025] The cleaning component 310 includes a first connecting block 3101. The top of the first connecting block 3101 is fixedly connected with a top circular rod 3102. A brush 3103 is fixedly connected to the outside of the top circular rod 3102. The bottom of the first connecting block 3101 is fixedly connected with an upper top spring 3104. The bottom of the upper top spring 3104 is fixedly connected with a second connecting block 3105. A waveform ring piece 3106 is fixedly connected to the top of the second connecting block 3105. A bottom through rod 3107 is slidably connected through the second connecting block 3105. One side of the first connecting block 3101 is slidably connected to the outside of the internal thread sleeve plate 3094. One side of the second connecting block 3105 is fixedly connected to the outside of the internal thread sleeve plate 3094. The top of the waveform ring piece 3106 is fixedly connected with the bottom of the first connecting block 3101. The top of the bottom through rod 3107 is fixedly connected with the bottom of the first connecting block 3101.

[0026] When in use, the atomized droplets sprayed from the atomizing circular plate 306 enter the external threaded ring plate 3091 and pass through the circular block 3093 to diffuse and spray through the bottom circular hole 3095 and the external circular hole 3096 of the internal threaded sleeve 3094; by opening a plurality of external circular holes 3096 on the outer wall of the internal threaded sleeve 3094, it is convenient for the internal atomized droplets to diffuse and spray from the outside, preventing the atomized droplets sprayed from the atomizing circular plate 306 from atomizing and reducing dust only in the working area of ​​the bucket 2 but being difficult to atomize and reduce dust in the nearby area; by rotating the internal threaded sleeve 3094 and the external threaded ring plate 3091 for threaded matching, the internal threaded sleeve 3094 can move up and down, and when the internal threaded sleeve 3094 moves up and down, the external circular holes of the external threaded ring plate 3091 are used to The coverage degree of 3096 is used to adjust the displacement of the atomized droplets through the external circular hole 3096, so as to prevent the atomized droplets from being sprayed in large quantities when there is less diffuse dust in the area near the bucket 2, causing waste and affecting the working efficiency of the bucket 2; when the internal threaded sleeve 3094 rotates and moves upward, the bottom opening circular hole 3095 approaches the circular block 3093 in the external threaded ring plate 3091, and when the internal threaded sleeve 3094 continues to rotate and move upward, the circular block 3093 will insert and block the bottom opening circular hole 3095, so as to prevent the dust in the working area from gradually diffusing and accumulating in the internal threaded sleeve 3094 when there is no need to perform atomization and dust reduction on the area near the bucket 2, affecting the use; the internal threaded sleeve 3094 is reversed and moved downward until it is out of the thread cooperation with the external threaded ring plate 3091 The threads can be disassembled to clean the internal thread sleeve 3094 and the external thread ring plate 3091, so as to prevent the internal thread sleeve 3094 and the external thread ring plate 3091 from gradually accumulating too much mud and dust after being used for a long time in a dusty environment and affecting the use effect; after cleaning, the internal thread sleeve 3094 can be sleeved on the external thread ring plate 3091 and rotated upward for thread installation. At this time, when the internal thread sleeve 3094 rotates upward, it drives the outer cleaning component 310 to rotate upward together. When the internal thread sleeve 3094 rotates upward, the second connecting block 3105 and the first connecting block 3101 drive the top round rod 3102 and the brush 3103 to rotate upward together. When the brush 3103 rotates upward, it rubs and cleans the outer surface of the external thread ring plate 3091 , to prevent uncleaned dust particles from remaining on the threaded surface of the external threaded ring plate 3091 that is about to be threaded with the internal threaded sleeve plate 3094, thereby affecting the assembly effect; when the top round rod 3102 moves up to the top and contacts the bottom of the square water tank 305, it is pushed downward and drives the bottom penetration rod 3107 to move downward together. At the same time, when the first connecting block 3101 moves downward, the top spring 3104 and the corrugated ring piece 3106 at the bottom are compressed together. By arranging an easy-to-compress top spring 3104 at the bottom of the first connecting block 3101, the top round rod 3102 can move downward, preventing the top of the top round rod 3102 from causing resistance to the internal threaded sleeve plate 3094 when contacting the square water tank 305, so that the internal threaded sleeve plate 3094 cannot continue to move up and affect the use;By arranging a corrugated ring piece 3106 outside the upper top spring 3104 to stretch or contract together with the upper top spring 3104 and wrap and protect the upper top spring 3104, it is prevented that the upper top spring 3104 gradually adheres to too much mud and ash on the surface of the dusty working area for a long time, affecting its use; by arranging a bottom through rod 3107 penetrating the second connecting block 3105 at the bottom of the first connecting block 3101 to perform sliding limit on the elastically connected first connecting block 3101, it is prevented that the first connecting block 3101 rotating with the internal thread sleeve plate 3094 is tilted and offset outward under the action of centrifugal force, making it difficult for the brush 3103 to clean the external thread ring plate 3091 when moving upward.

[0027] Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A spray dust suppression device for a backhoe excavator, characterized in that: include: An atomizing dust reduction mechanism (3), the atomizing dust reduction mechanism (3) being used to perform atomizing spray-type dust reduction treatment on the working area of ​​a backhoe excavator bucket (2); the bucket (2) is sleeved on the bottom of the backhoe excavator boom (1) and is rotatably connected to the boom (1) via a rotating bolt, and one side of the boom (1) is fixedly connected to one side of the atomizing dust reduction mechanism (3); The atomization dust reduction mechanism (3) comprises: A water storage tank (301), wherein a first fixing block (302) is provided on one side of the water storage tank (301); A water hose (303), wherein a high-pressure water pump (304) is provided on the top of the water hose (303); A square water tank (305), wherein an atomizing circular plate (306) is provided at the bottom of the square water tank (305); A hydraulic push rod (307), wherein a driving shaft of the hydraulic push rod (307) is provided with a second fixing block (308); One side of the water storage tank (301) is fixedly connected to one side of the first fixed block (302); the bottom of the first fixed block (302) is fixedly connected to the top of the hydraulic push rod (307); the driving shaft of the hydraulic push rod (307) is fixedly connected to the top of the second fixed block (308); one side of the second fixed block (308) is fixedly connected to one side of the square water tank (305); the water inlet at the top of the square water tank (305) is connected to the bottom of the water hose (303); the top of the water hose (303) is connected to the water outlet of the high-pressure water pump (304); the water inlet of the high-pressure water pump (304) is connected to the bottom of the water storage tank (301); the top of the atomizing circular plate (306) passes through the bottom of the square water tank (305) and is fixedly connected to the square water tank (305); One side of the water storage tank (301) is fixedly connected to one side of the boom (1).

2. The backhoe excavator spray dust suppression device according to claim 1, characterized in that: A diffusion component (309) is fixedly connected to the bottom of the square water tank (305), a cleaning component (310) is fixedly connected to the outside of the diffusion component (309), T-slot clamping plates (311) are fixedly connected to both sides of the inner wall of the square water tank (305), a T-shaped slider (312) is slidably connected to the inner wall of the T-slot clamping plate (311), a circular baffle (313) is fixedly connected to one side of the T-shaped slider (312), and a retraction spring (314) is fixedly connected to the top of the circular baffle (313).

3. The backhoe excavator spray dust suppression device according to claim 2, characterized in that: A plurality of the diffusion components (309) are provided, and the plurality of the diffusion components (309) are distributed at the bottom of the square water tank (305) and are located directly below the atomizing circular plate (306); a plurality of the cleaning components (310) are provided, and the plurality of the cleaning components (310) are distributed outside the diffusion components (309).

4. The backhoe excavator spray dust suppression device according to claim 2, characterized in that: A plurality of T-slot clamping plates (311) are provided, and the plurality of T-slot clamping plates (311) are distributed on both sides of the inner wall of the square water tank (305), and the top of the retraction spring (314) is fixedly connected to the inner wall of the square water tank (305).

5. The backhoe excavator spray dust suppression device according to claim 2, characterized in that: The diffusion component (309) comprises an externally threaded ring plate (3091), the inner wall of the externally threaded ring plate (3091) being fixedly connected to a cross fixing rod (3092), the bottom of the cross fixing rod (3092) being fixedly connected to a circular blocking block (3093), an internally threaded sleeve plate (3094) being sleeved on the outer side of the externally threaded ring plate (3091) and being threadedly connected, a bottom-opening circular hole (3095) being provided at the bottom of the internally threaded sleeve plate (3094), and an externally connected circular hole (3096) being provided on the outer wall of the internally threaded sleeve plate (3094).

6. The backhoe excavator spray dust suppression device according to claim 5, characterized in that: The top of the externally threaded ring plate (3091) is fixedly connected to the bottom of the square water tank (305); the externally threaded ring plate (3091) is located directly below the atomizing circular plate (306); the inner diameter of the externally threaded ring plate (3091) matches the outer diameter of the atomizing circular plate (306); and the outer wall of the internally threaded sleeve plate (3094) is fixedly connected to one side of the cleaning assembly (310).

7. The backhoe excavator spray dust suppression device according to claim 5, characterized in that: A plurality of the externally threaded ring plates (3091) are provided, and the plurality of the externally threaded ring plates (3091) are distributed on the bottom of the square water tank (305); a plurality of the externally through circular holes (3096) are provided, and the plurality of the externally through circular holes (3096) are distributed on the outer wall of the internally threaded sleeve plate (3094).

8. The backhoe excavator spray dust suppression device according to claim 2, characterized in that: The cleaning assembly (310) comprises a first connecting block (3101), the top of the first connecting block (3101) is fixedly connected to a top round rod (3102), the outer side of the top round rod (3102) is fixedly connected to a brush (3103), the bottom of the first connecting block (3101) is fixedly connected to an upper spring (3104), the bottom of the upper spring (3104) is fixedly connected to a second connecting block (3105), the top of the second connecting block (3105) is fixedly connected to a corrugated ring piece (3106), and the second connecting block (3105) is slidably connected to a bottom through rod (3107).

9. The backhoe excavator spray dust suppression device according to claim 8, characterized in that: One side of the first connecting block (3101) is slidably connected to the outer side of the internal thread sleeve (3094), and one side of the second connecting block (3105) is fixedly connected to the outer side of the internal thread sleeve (3094).

10. The backhoe excavator spray dust suppression device according to claim 8, characterized in that: The top of the corrugated ring piece (3106) is fixedly connected to the bottom of the first connecting block (3101), and the top of the bottom-mounted through rod (3107) is fixedly connected to the bottom of the first connecting block (3101).

Images