Spraying dust removal device and method for construction waste

Abstract

The invention relates to the technical field of construction waste treatment, and discloses a construction waste spraying dust removal device and method.The construction waste spraying dust removal device comprises an outer shell and an inner shell, an inner cavity of the inner shell is rotationally connected with a material turning plate, one end of the material turning plate is fixedly connected with a rotating disc, and a plurality of clamping grooves are evenly formed in the surface of the rotating disc in the circumferential direction; a support is fixedly connected to one side of the inner shell, an arc-shaped groove is formed in one side of the support, a sliding column is slidably connected to an inner cavity of the arc-shaped groove, and a clamping assembly used for being matched with the clamping groove is fixedly connected to one end of the sliding column. The accumulated construction waste is uniformly turned over in the spraying dust removal process, the problem that dust is difficult to strip due to the fact that blocky materials at the bottom are not effectively turned over in traditional static dust removal is thoroughly solved, the dust removal time is shortened compared with that of a traditional process, and the dust removal operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction waste treatment, and in particular to a construction waste spraying and dust removal device and method. Background Art

[0002] With the expansion of construction waste recycling technology, the importance of dust removal, a key process for purifying aggregates and controlling dust pollution, has become increasingly prominent. Currently, of the approximately 3.5 billion tons of construction waste generated annually in China, nearly 60% requires dust removal to remove surface pollutants such as dust, soil, and mortar particles (dust content generally exceeds 10%, far exceeding the standard requirement of 3% for recycled aggregate).

[0003] However, existing dust removal processes (which primarily rely on static spraying or single air separation) have significant limitations: when materials accumulate within the equipment, the lack of dynamic agitation of the lumps at the bottom prevents dust particles from effectively escaping the aggregate surface, extending dust removal time by 30%-50%. Furthermore, for mixed materials containing lightweight impurities like wood chips and plastic debris, static dust removal cannot achieve the coordinated separation of impurities and dust by adjusting the material's posture. This, in turn, leads to secondary dust entrainment and increased impurity retention during subsequent screening processes.

[0004] In view of this, the present invention solves the above technical problems by proposing a construction waste spraying and dust removal device and method. Summary of the Invention

[0005] In response to the shortcomings of the above-mentioned background technology, the present invention provides a technical solution for a construction waste spraying and dust removal device and method. The cam mechanism is driven by a servo motor to drive the turning plate to achieve intermittent rotation at a fixed angle, so that the accumulated construction waste is evenly turned over during the spraying and dust removal process, which completely solves the problem of the bottom block material in traditional static dust removal being difficult to peel off the dust layer due to the lack of effective turning. The dust removal time is shortened compared with the traditional process, thereby improving the efficiency of the dust removal operation.

[0006] The present invention provides the following technical solution: a construction waste spraying and dust removal device and method, comprising: an outer shell and an inner shell, the inner cavity of the inner shell is rotatably connected to a flipping plate, one end of the flipping plate is fixedly connected to a turntable, the surface of the turntable is evenly provided with a plurality of card grooves along the circumferential direction, one side of the inner shell is fixedly connected to a bracket, one side of the bracket is provided with an arc groove, the inner cavity of the arc groove is slidably connected to a sliding column, and one end of the sliding column is fixedly connected to a clamping component for cooperating with the card groove.

[0007] As a preferred technical solution of the present invention, the clamping assembly includes a connecting column fixed to one end of the sliding column, the inner cavity of the connecting column is slidably connected with a clamping block, one side of the clamping block is provided with an inclined surface, and a first return spring is fixedly connected between the opposite surface of the clamping block and the connecting column; the interior of the bracket is fixedly connected with a second return spring, and one end of the second return spring is fixedly connected to the surface of the sliding column.

[0008] As a preferred technical solution of the present invention, the inner cavity of the bracket is slidably connected with three limit blocks, one side of the connecting column is fixedly connected with a trigger plate, the surface of the trigger plate is fixedly connected with a protrusion, and the bottoms of the three limit blocks and the shapes of the protrusions are all arc shapes.

[0009] As a preferred technical solution of the present invention, one side of the inner shell is rotatably connected to a driven wheel, and one end of the driven wheel is fixedly connected to a cam. The position of the cam corresponds to the position of the sliding column. When the cam rotates, it can squeeze the sliding column to make it slide in the arc groove.

[0010] As a preferred technical solution of the present invention, a servo motor is connected to one side of the outer shell by bolts, one end of the servo motor output shaft is fixedly connected to a driving wheel, the outer periphery of the driving wheel and the driven wheel are jointly sleeved with a synchronous belt, and the servo motor drives the driven wheel to rotate through the driving wheel and the synchronous belt.

[0011] As a preferred technical solution of the present invention, a spray dust removal unit is fixedly connected to the top of the outer shell, and the spray dust removal unit includes a dust removal liquid tank. The top bolt of the dust removal liquid tank is connected to a transmission pipe, and one end of the transmission pipe extends to the inner cavity of the inner shell. The dust removal liquid tank transmits the dust removal liquid through a water pump, and a plurality of nozzles are provided at the end of the transmission pipe for evenly spraying the dust removal liquid onto the construction waste.

[0012] As a preferred technical solution of the present invention, the top of the outer shell is connected to an opening and closing door through a hinge, and the outer shell and the inner cavity of the inner shell are commonly connected to a pull plate, which is used to control the discharge of construction waste.

[0013] As a preferred technical solution of the present invention, S1, open the opening and closing door to send the construction waste into the inner cavity of the inner shell, and after the sending is completed, close the opening and closing door; S2. Start the dust removal liquid tank. The dust removal liquid is delivered to the dust removal liquid tank through a water pump. The dust removal liquid enters the inner cavity of the inner shell through the transmission pipe and the nozzle at the end thereof, and sprays the construction waste to remove dust. S3. Start the servo motor, which drives the driven wheel to rotate via the driving wheel and the synchronous belt, causing the cam to rotate and squeeze the sliding column. The sliding column drives the clamping assembly to rotate along the arc groove, causing the clamping block to move and clamp into the inner cavity of another clamping slot. The turntable drives the flipping plate to rotate 45 degrees. Repeat the above process to rotate the flipping plate 360 ​​degrees to flip the construction waste. S4. After the material turning and dust removal is completed, pull the pull plate to discharge the construction waste from the inner cavity of the inner shell.

[0014] As a preferred technical solution of the present invention, in step S3, the rotation speed of the servo motor can be adjusted according to the type and volume of the construction waste. When the cam squeezes the sliding column, the card block realizes intermittent rotation of the turntable through the cooperation of the inclined surface and the card slot. The single rotation angle is 45° to adapt to the turning requirements of different construction waste.

[0015] As a preferred technical solution of the present invention, after the completion of step S4, step S5 is also included: opening the opening and closing door, cleaning the construction waste remaining in the inner cavity of the inner shell through the pulling plate, and at the same time starting the dust removal liquid tank to spray and remove dust on the turning plate, the inner wall of the inner shell and the transmission pipeline. The dust removal time is 10-15 minutes. After the dust removal is completed, the dust removal liquid tank is closed and the power supply of the equipment is disconnected.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses a servo motor to drive the cam mechanism, driving the turning plate to achieve intermittent rotation at a fixed angle, so that the accumulated construction waste is evenly turned over during the spray dust removal process, completely solving the problem of the bottom block material being difficult to peel off due to the lack of effective turning in traditional static dust removal. The dust removal time is shortened compared with the traditional process, and the efficiency of the dust removal operation is improved.

[0017] The present invention uses a three-level limit buffer mechanism to convert the kinetic energy of the sliding column during reset into the potential energy of the limit block through graded energy consumption, thereby achieving graded deceleration in the reset process, effectively reducing the reset impact force, reducing the vibration and wear of moving parts such as the cam and sliding column, extending the service life of the equipment, and reducing equipment maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the inner shell structure of the present invention; Figure 3 It is a split diagram of the present invention; Figure 4 It is a partial enlarged view of the present invention; Figure 5 This is a schematic diagram of the sliding column structure of the present invention; Figure 6 Schematic diagram of the bump structure of the present invention; Figure 7 This is a schematic diagram of the card block structure of the present invention; Figure 8 Schematic diagram of the structure of the second return spring of the present invention; Figure 9 It is a schematic diagram of the card slot structure of the present invention.

[0019] In the figure: 1. Outer shell; 101. Inner shell; 2. Flipping plate; 201. Turntable; 202. Slot; 203. Bracket; 204. Arc groove; 205. Sliding column; 3. Connecting column; 301. Block; 302. Inclined surface; 303. First return spring; 304. Second return spring; 4. Limiting block; 401. Trigger plate; 402. Bump; 5. Driven wheel; 501. Cam; 6. Servo motor; 601. Driving wheel; 602. Synchronous belt; 7. Dust removal liquid tank; 701. Transmission pipeline; 8. Opening and closing door; 801. Pull plate. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1-9 As shown, a construction waste spray dust removal device and method includes an outer shell 1 and an inner shell 101. The inner cavity of the inner shell 101 is rotatably connected to a flip plate 2, one end of the flip plate 2 is fixedly connected to a turntable 201, and a surface of the turntable 201 is uniformly provided with a plurality of slots 202 along the circumferential direction. One side of the inner shell 101 is fixedly connected to a bracket 203, one side of the bracket 203 is provided with an arc groove 204, and the inner cavity of the arc groove 204 is slidably connected to a sliding column 205, and the sliding column 205 is fixedly connected to the inner cavity of the inner shell 101. One end is fixedly connected to a snap-fit ​​assembly for engaging with the slot 202. The snap-fit ​​assembly includes a connecting post 3 fixed to one end of the sliding post 205. A snap-fit ​​block 301 is slidably connected to the inner cavity of the connecting post 3. A slope 302 is formed on one side of the snap-fit ​​block 301. A first return spring 303 is fixedly connected between the opposite surface of the snap-fit ​​block 301 and the connecting post 3. A second return spring 304 is fixedly connected to the interior of the bracket 203. One end of the second return spring 304 is fixedly connected to the surface of the sliding post 205. Three limit blocks 4 are slidably connected to the inner cavity of the bracket 203. A trigger plate 401 is fixedly connected to one side of the connecting column 3. A protrusion 402 is fixedly connected to the surface of the trigger plate 401. The bottoms of the three limit blocks 4 and the protrusion 402 are all arc-shaped. One side of the inner housing 101 is rotatably connected to a driven wheel 5, and one end of the driven wheel 5 is fixedly connected to a cam 501. The position of the cam 501 corresponds to the position of the sliding post 205. When the cam 501 rotates, it can squeeze the sliding post 205 to make it slide in the arc groove 204. A servo motor 6 is bolted to one side of the outer shell 1. One end of the output shaft of the servo motor 6 is fixedly connected to a driving pulley 601. A synchronous belt 602 is sleeved on the outer periphery of the driving pulley 601 and the driven pulley 5. The servo motor 6 drives the driven pulley 5 to rotate through the driving pulley 601 and the synchronous belt 602. A spray dust removal unit is fixedly connected to the top of the outer shell 1, and the spray dust removal unit includes a dust removal liquid tank (7). The top of the dust removal liquid tank (7) is bolted to a transmission pipe (701), and one end of the transmission pipe (701) extends to the inner cavity of the inner shell 101. The dust removal liquid tank (7) transmits the dust removal liquid through a water pump, and a plurality of nozzles are provided at the end of the transmission pipe (701) for evenly spraying the dust removal liquid onto the construction waste. The top of the outer shell 1 is connected to an opening and closing door 8 through a hinge. The outer shell 1 and the inner cavity of the inner shell 101 are connected to a pull plate 801, which is used to control the discharge of construction waste. S1. Open the door 8 and feed the construction waste into the inner cavity of the inner shell 101. After the feeding is completed, close the door 8. S2. Start the dust removal liquid tank 7. The dust removal liquid tank 7 delivers the dust removal liquid through the water pump. The dust removal liquid enters the inner cavity of the inner shell 101 through the transmission pipe 701 and the nozzle at the end thereof, and sprays the construction waste to remove dust. S3. Start the servo motor 6, which drives the driven wheel 5 to rotate via the driving wheel 601 and the synchronous belt 602, causing the cam 501 to rotate and squeeze the sliding column 205. The sliding column 205 drives the clamping assembly to rotate along the arc groove 204, causing the clamping block 301 to move and clamp into the inner cavity of another clamping groove 202, causing the turntable 201 to drive the tipping plate 2 to rotate 45 degrees. Repeat the above process until the tipping plate 2 rotates 360 degrees, thereby turning the construction waste; S4: After the material is turned over and dust removed, the pull plate 801 is pulled to discharge the construction waste from the inner cavity of the inner shell 101; In step S3, the speed of the servo motor 6 can be adjusted according to the type and volume of the construction waste. When the cam 501 squeezes the sliding post 205, the block 301 cooperates with the inclined surface 302 and the slot 202 to achieve intermittent rotation of the turntable 201. The single rotation angle is 45 degrees to meet the requirements of turning different construction waste. After step S4 is completed, step S5 is also included: opening the opening and closing door 8, cleaning the construction waste remaining in the inner cavity of the inner shell 101 through the pull plate 801, and at the same time starting the dust removal liquid tank 7 to spray and remove dust on the flip plate 2, the inner wall of the inner shell 101 and the transmission pipe 701. The dust removal time is 10-15 minutes. After the dust removal is completed, the dust removal liquid tank 7 is closed and the power supply of the equipment is disconnected. Example 1

[0022] Before the equipment is started, the flip plate is in the initial position of vertical downward. At this time, the opening and closing door 8 is in the closed state, and the inner cavity of the inner shell 101 forms a closed space. When construction waste needs to be put in, the operator opens the opening and closing door 8 and feeds the construction waste into the inner cavity of the inner shell 101 through the feeding port. After the feeding is completed, the opening and closing door 8 is closed to ensure that the inner cavity is sealed, providing a sealed environment for spray dust removal and mechanical turning, and preventing the dust removal liquid from overflowing and dust splashing; The dust removal liquid tank 7 is started, and the water pump element inside it starts working, extracting the dust removal liquid from the inner cavity of the dust removal liquid tank 7. The dust removal liquid is transported to the inner cavity of the inner shell 101 through the transmission pipe 701. The nozzle at the end of the pipe evenly sprays the dust removal liquid on the construction waste to remove loose dust. At the same time, it provides a moist environment for subsequent mechanical turning of the material, reduces the bonding strength between dust and aggregate, and improves the dust removal efficiency. The servo motor 6 is started, and its output shaft drives the driving wheel 601 to rotate. The driving wheel 601 is connected to the driven wheel 5 via a synchronous belt 602. The synchronous belt 602 transmits the rotation of the driving wheel to the driven wheel 5, realizing synchronous power transmission. The driven wheel 5 is coaxially mounted with a cam 501, so the cam 501 rotates with the driven wheel 5. When the cam 501 rotates, its outer contour curve produces a periodic squeezing effect on the sliding post 205. When the cam protrusion contacts the sliding post 205, it pushes the sliding post 205 to move along the tangent direction of the arc groove 204. When the cam concave portion rotates to the sliding post position, the sliding post 205 is reset under the tension of the second return spring 304. The sliding post 205 is rigidly connected to the clamping assembly, and its movement drives the clamping block 301 to move along an arc track. A bevel 302 is provided at the front end of the clamping block 301. When the clamping block 301 approaches the clamping slot 202, the bevel 302 contacts the edge of the clamping slot 202. The squeezing effect of the clamping slot causes the clamping block 301 to compress the first return spring 303 and retract inward. When the clamping block 301 moves to the position of the next clamping slot 202, the first return spring 303 releases its elastic potential energy, pushing the clamping block 301 into the inner cavity of the clamping slot 202, thereby achieving the positioning and locking of the turntable 201. Each time the card block 301 completes a card slot switch, the turntable 201 drives the flipping plate 2 to rotate a fixed angle of 45 degrees. By repeating the above-mentioned process of servo motor 6 driving, cam 501 squeezing the sliding column 205, and positioning the card assembly, the flipping plate 2 realizes periodic rotation and flipping of the material, so that the material is intermittently flipped during the dust removal process, breaking the static accumulation state and ensuring that the dust layer of the block material at the bottom is fully peeled off; After the material turning and dust removal are completed, the operator pulls the pull plate 801 to drive the opening and closing door 8 to open, and the inner cavity of the inner shell 101 is connected to the outside. Under the action of gravity, the processed construction waste is discharged from the inner cavity through the discharge port, completing the entire processing process. Example 2

[0023] Based on the embodiment, this embodiment optimizes the design of the bracket 203 and the clamping assembly. When the trigger plate 401 rotates clockwise, the protrusion 402 first contacts the first limit block 4. As the protrusion 402 continues to rotate, its arc surface pushes the limit block 4 to overcome gravity and lift upward, forming a mechanical limit for the sliding column 205, preventing it from moving in the opposite direction (that is, preventing the sliding column 205 from rotating when the pressure of the cam 501 is reduced). After the protrusion 402 rotates past the first limit block 4, the limit block 4 automatically falls back under the action of gravity, releasing the limit. Then, the protrusion 402 contacts the second limit block 4, repeating the above lifting-limiting-falling back process to limit the sliding column 205 for the second time. Finally, the third limit block 4 is lifted to achieve the final positioning of the sliding column 205, ensuring that it remains stable during the unidirectional movement driven by the cam. When the sliding column 205 is reset in the reverse direction under the action of the second return spring 304, the trigger plate 401 rotates counterclockwise along with the connecting column 3. At this time, the protrusion 402 first disengages the third stop block 4, which then falls back, releasing the limit on the sliding column. Subsequently, the protrusion 402 contacts the other side of the second stop block 4, which lifts up and creates resistance to the reset movement of the sliding column 205, achieving the first deceleration. As the reset process continues, the first stop block 4 is lifted up, creating a second resistance, further reducing the reset speed of the sliding column. Through the sequential action of the three-stage stop blocks 4, the rapid reset of the sliding column 205 is converted into a graded deceleration motion, effectively reducing the reset impact force and reducing vibration and wear of mechanical components. The limit block 4 adopts a non-powered design and relies solely on its own gravity to achieve return and reset, without the need for an additional driving mechanism. This simplifies the structure while ensuring the reliability of the limit action. When the protrusion 402 leaves the limit block 4, the limit block 4 falls vertically along the guide groove under the action of gravity and returns to its initial position, ready for the next limit. The kinetic energy of the sliding column 205 during resetting is gradually absorbed by the three-stage limit block 4. Each time the limit block 4 is lifted up, part of the kinetic energy of the sliding column 205 is converted into the potential energy of the limit block 4 (overcoming gravity to do work) and frictional heat energy. By using a graded energy consumption method, a single large impact force is decomposed into three smaller buffering forces, thereby protecting moving parts such as the cam 501 and the sliding column 205 and extending the service life of the equipment.

[0024] 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 "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. At the same time, in the drawings of the present invention, fill patterns are only used to distinguish layers and do not make any other limitations.

[0025] 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 construction waste spray dust removal device, comprising: An outer shell (1) and an inner shell (101); The invention is characterized in that: the inner cavity of the inner shell (101) is rotatably connected to a turning plate (2), one end of the turning plate (2) is fixedly connected to a turntable (201), a surface of the turntable (201) is uniformly provided with a plurality of slots (202) along the circumferential direction, one side of the inner shell (101) is fixedly connected to a bracket (203), one side of the bracket (203) is provided with an arc groove (204), and the inner cavity of the arc groove (204) is slidably connected to a sliding column (205), One end of the sliding column (205) is fixedly connected to a clamping assembly for cooperating with the clamping slot (202).

2. The construction waste spray dust removal device according to claim 1, characterized in that: The clamping assembly comprises a connecting column (3) fixed to one end of a sliding column (205); a clamping block (301) is slidably connected to the inner cavity of the connecting column (3); a slope (302) is provided on one side of the clamping block (301); a first return spring (303) is fixedly connected between the opposite surface of the clamping block (301) and the connecting column (3); a second return spring (304) is fixedly connected to the interior of the bracket (203); and one end of the second return spring (304) is fixedly connected to the surface of the sliding column (205).

3. The construction waste spray dust removal device according to claim 1, characterized in that: The inner cavity of the bracket (203) is slidably connected to three limit blocks (4), one side of the connecting column (3) is fixedly connected to a trigger plate (401), and the surface of the trigger plate (401) is fixedly connected to a protrusion (402), and the bottoms of the three limit blocks (4) and the protrusion (402) are all in the shape of an arc.

4. The construction waste spray dust removal device according to claim 1, characterized in that: One side of the inner housing (101) is rotatably connected to a driven wheel (5), and one end of the driven wheel (5) is fixedly connected to a cam (501). The position of the cam (501) corresponds to the position of the sliding column (205). When the cam (501) rotates, it can squeeze the sliding column (205) to make it slide in the arc groove (204).

5. The construction waste spray dust removal device according to claim 1, characterized in that: A servo motor (6) is connected to one side of the outer shell (1) via bolts, and one end of the output shaft of the servo motor (6) is fixedly connected to a driving wheel (601), and a synchronous belt (602) is sleeved on the outer periphery of the driving wheel (601) and the driven wheel (5), and the servo motor (6) drives the driven wheel (5) to rotate via the driving wheel (601) and the synchronous belt (602).

6. The construction waste spray dust removal device according to claim 1, characterized in that: A spray dust removal unit is fixedly connected to the top of the outer shell (1), and the spray dust removal unit includes a dust removal liquid tank (7). The top of the dust removal liquid tank (7) is bolted to a transmission pipe (701), and one end of the transmission pipe (701) extends to the inner cavity of the inner shell (101). The dust removal liquid tank (7) transmits the dust removal liquid through a water pump, and a plurality of nozzles are provided at the end of the transmission pipe (701) for evenly spraying the dust removal liquid onto the construction waste.

7. The construction waste spray dust removal device according to claim 1, characterized in that: The top of the outer shell (1) is connected to an opening and closing door (8) via a hinge, and the outer shell (1) and the inner cavity of the inner shell (101) are commonly connected to a pull plate (801), and the pull plate (801) is used to control the discharge of construction waste.

8. A method for using a construction waste spray dust removal device, characterized in that: According to a construction waste spray dust removal device according to any one of claims 1 to 7, the specific method comprises the following steps: S1, opening the opening and closing door (8), sending the construction waste into the inner cavity of the inner shell (101), and closing the opening and closing door (8) after the sending is completed; S2, starting the dust removal liquid tank (7), the dust removal liquid tank (7) delivers the dust removal liquid through the water pump, and the dust removal liquid enters the inner cavity of the inner shell (101) through the transmission pipe (701) and the nozzle at the end thereof, and performs spraying and dust removal on the construction waste; S3, start the servo motor (6), and drive the driven wheel (5) to rotate through the driving wheel (601) and the synchronous belt (602), so that the cam (501) rotates and squeezes the sliding column (205), and the sliding column (205) drives the clamping assembly to rotate along the arc groove (204), so that the clamping block (301) moves and clamps into the inner cavity of another clamping groove (202), so that the turntable (201) drives the flipping plate (2) to rotate 45 degrees, and repeats the above method to make the flipping plate (2) rotate 360 ​​degrees, so as to flip the construction waste; S4. After the material turning and dust removal are completed, the pull plate (801) is pulled to discharge the construction waste from the inner cavity of the inner shell (101).

9. The method for using the construction waste spray dust removal device according to claim 8, characterized in that: In step S3, the rotation speed of the servo motor (6) can be adjusted according to the type and volume of the construction waste. When the cam (501) squeezes the sliding column (205), the block (301) realizes the intermittent rotation of the turntable (201) through the cooperation between the inclined surface (302) and the card slot (202). The single rotation angle is 45 degrees, so as to meet the requirements of turning over different construction waste.

10. The method for using the construction waste spray dust removal device according to claim 8, characterized in that: After the step S4 is completed, the step S5 is also included: opening the opening and closing door (8), cleaning the construction waste remaining in the inner cavity of the inner shell (101) through the pulling plate (801), and at the same time starting the dust removal liquid tank (7) to spray the turning plate (2), the inner wall of the inner shell (101) and the transmission pipe (701) for dust removal. The dust removal time is 10-15 minutes. After the dust removal is completed, the dust removal liquid tank (7) is closed and the power supply of the equipment is disconnected.

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