An environmentally friendly dust removal device for building decoration projects

Abstract

This invention relates to the field of dust removal equipment technology, and discloses an environmentally friendly dust removal device for building decoration engineering. The main body shell includes a cavity formed within itself; the adjustment mechanism includes a flow guiding unit disposed within the cavity and an air inlet duct disposed outside the cavity. The flow guiding unit includes a spiral tube, a limiting plate fixedly connected to the spiral tube, and several fixing threads fixedly connected to the limiting plate. The flow guiding unit guides the airflow entering the cavity to move spirally along the spiral tube and the fixing threads. This environmentally friendly dust removal device for building decoration engineering, through the coordinated guidance of the airflow by the spiral tube and the fixing threads, and the physical obstruction formed on both sides of the airflow by the limiting plates, not only strengthens the spiral strength of the airflow but also shortens the movement distance of fine dust, thus solving the defects of existing technologies where fine dust is difficult to effectively capture due to low centrifugal force and long movement distance.

Description

Technical Field

[0001] This invention relates to the field of dust removal equipment technology, specifically to an environmentally friendly dust removal device for building decoration engineering. Background Technology

[0002] An environmentally friendly dust removal device for building decoration projects typically refers to a mechanical device used at construction sites to collect dust and exhaust gases. These devices primarily address the problems of air pollution, worker health hazards, and cleaning difficulties caused by large amounts of dust generated during decoration processes (such as cutting, grinding, and drilling). They generally include different types such as spray dust collectors, baghouse dust collectors, and rotary dust collectors.

[0003] In existing technologies, rotary dust collectors generally work by guiding gas in a spiral motion within a cavity. This causes the dust carried by the airflow to be captured by centrifugal force, coming into contact with the inner wall of the cavity and moving downwards along the inner wall, thus achieving dust removal. However, the air inlet of a rotary dust collector is usually fixed and located at a high position, limiting the height and angle at which dust can be removed. Furthermore, when the airflow carrying dust spirals, smaller particles experience less centrifugal force due to their smaller mass. Also, when these particles are away from the inner wall on the same side of the cavity, they need to travel a greater distance horizontally, making it difficult for them to contact the inner wall within the time it takes for the airflow to complete its spiral trajectory. Therefore, they cannot achieve a good dust removal effect for fine dust particles. Summary of the Invention

[0004] (a) Technical problems to be solved:

[0005] To address the shortcomings of existing technologies, this invention provides an environmentally friendly dust removal device for building decoration projects, which solves the problems mentioned in the background art, such as the limited dust removal range caused by the fixed air inlet of the rotary dust collector, and the difficulty in effectively capturing fine dust due to its small centrifugal force and long travel distance.

[0006] (II) Technical Solution:

[0007] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly dust removal device for building decoration engineering, comprising:

[0008] The main body shell, including cavities formed inside itself;

[0009] The regulating mechanism includes a flow guiding unit disposed in the cavity and an air inlet pipe disposed outside the cavity. The flow guiding unit includes a spiral tube, a limiting plate fixedly connected to the spiral tube, and several fixing threads fixedly connected to the limiting plate. The flow guiding unit is used to guide the airflow entering the cavity to move in a spiral shape along the spiral tube and the fixing threads, and to block the dust carried by the airflow on both sides of the airflow.

[0010] The rotating ring includes a rotating shell and a limiting outlet shell sleeved on the outside of the air inlet duct. It is used to drive the adjustment mechanism to rotate through the connection with the air inlet duct, thereby enhancing the guiding effect of the spiral tube and the flow guiding unit and expanding the effective range of the air inlet duct.

[0011] Preferably, it further includes:

[0012] The air outlet pipe has one end located inside the cavity and the other end extending to the top outer side of the main body shell and fixedly connected to the side wall of the cavity. It is coaxial with the main body shell and serves as the air outlet channel of the cavity.

[0013] A top shell is located at the top of the cavity and is fixedly connected to the air outlet pipe;

[0014] The ash discharge valve is fixedly connected to the bottom of the main body shell and communicates with the cavity, and is used to evenly discharge the dust falling from the cavity downwards.

[0015] A collection tank, detachably connected to the end of the ash discharge valve away from the main body shell, is used to collect dust falling from the cavity and the ash discharge valve;

[0016] A support frame is fixedly connected to the outer sidewall of the main body shell and is used to support and support the main body shell.

[0017] Preferably, the limiting plate is positioned on the side of the spiral tube near the air outlet pipe, and the curvature of the limiting plate is the same as the curvature of the inner wall of the main body shell.

[0018] Preferably, a plurality of the fixing threads are located on the side of the limiting plate away from the air outlet pipe.

[0019] Preferably, the thread shape of the plurality of fixed threads is the same as the shape of the spiral tube, and the spacing between adjacent fixed threads is the same as the height of the internal channel of the spiral tube.

[0020] Preferably, the air inlet duct includes:

[0021] The intermediate tube has one end connected to the spiral tube and the other end extending from inside the limiting outlet shell to the outside of the main body shell. The intermediate tube is sleeved with the limiting outlet shell.

[0022] The telescopic tube has one end connected to the end of the intermediate tube away from the spiral tube, and the other end is an air inlet.

[0023] Several second fixing bolts are threadedly connected to both the intermediate tube and the telescopic tube, for fixing the intermediate tube and the telescopic tube together.

[0024] Preferably, the telescopic tube has a telescopic locking function.

[0025] Preferably, one end of the limiting outlet shell is fixedly connected to the outside of the rotating shell and communicates with the inside of the rotating shell.

[0026] Preferably, the rotating ring further includes:

[0027] Several rotating wheels are respectively disposed on the upper and lower sides of the rotating shell and fixedly connected to the rotating shell to reduce the friction when the rotating shell rotates;

[0028] Several first fixing bolts are threadedly connected to both the limiting outlet shell and the intermediate tube, for fixing the limiting outlet shell and the intermediate tube together.

[0029] A gear ring is fixedly connected to the rotating shell and disposed on the top of the rotating shell and the top shell, with the inner side being a gear end;

[0030] A protective shell is fixedly connected to the top of the gear ring to prevent external dust and objects from contacting the rotating gear end of the gear ring.

[0031] A drive motor is fixedly connected to the top shell, and its output end is configured as a gear that meshes with the gear ring to drive the gear ring and the rotating shell to rotate.

[0032] Preferably, the rotating shell is located between the main outer shell and the top shell, and a plurality of rotating wheels at the top and bottom of the rotating shell are in contact with the top shell and the main outer shell respectively. The rotating shell rotates coaxially with the main outer shell and the air outlet pipe.

[0033] (III) Beneficial Effects:

[0034] The environmentally friendly dust removal device for building decoration engineering provided by this invention has the following beneficial effects:

[0035] 1. This environmentally friendly dust removal device for building decoration projects guides airflow through a spiral tube and a fixed thread, and forms physical obstructions on both sides of the airflow with a limiting plate. This not only strengthens the spiral strength of the airflow, but also shortens the movement distance of fine dust, thereby solving the problem that fine dust is difficult to be effectively captured in the prior art due to its small centrifugal force and long movement distance.

[0036] 2. This environmentally friendly dust removal device for building decoration projects drives the air inlet pipe and the flow guiding unit to rotate through the rotating ring. The length adjustment function of the telescopic pipe and the horizontal position adjustment of the intermediate pipe are coordinated to achieve flexible adaptation of the air inlet direction, height and range of action. This solves the defect of the fixed air inlet of the existing rotary dust collector, which leads to the limited dust removal range.

[0037] 3. This environmentally friendly dust removal device for building decoration projects, through the sleeve connection between the intermediate pipe and the limiting outlet shell, and the adjustable distance between the spiral tube and the inner wall of the main body shell, achieves flexible adaptation of the spiral airflow width. Thus, it can reduce the airflow width to promote rapid settling for large dust particles, and expand the airflow width to extend the movement path for fine dust particles, and can be adapted to efficiently remove dust of different particle sizes. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 This is a first schematic diagram of the cross-sectional structure of the present invention;

[0040] Figure 3 This is a second schematic diagram of the cross-sectional structure of the present invention;

[0041] Figure 4 This is a schematic diagram of the top structure of the present invention;

[0042] Figure 5 This is a third schematic diagram of the cross-sectional structure of the present invention;

[0043] Figure 6 This is a schematic diagram of the overall structure of the rotating ring of the present invention;

[0044] Figure 7 This is a schematic diagram of the cross-sectional structure of the rotating ring of the present invention;

[0045] Figure 8 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0046] Figure 9 This is a schematic diagram of the overall structure of the adjustment mechanism of the present invention.

[0047] In the diagram: 10. Main body shell; 11. Cavity; 12. Air outlet pipe; 13. Top shell; 20. Rotating shell; 21. Rotating wheel; 22. Limiting outlet shell; 23. First fixing bolt; 24. Gear ring; 25. Protective shell; 26. Drive motor; 30. Spiral tube; 31. Limiting plate; 32. Fixing thread; 33. Intermediate tube; 34. Telescopic tube; 35. Second fixing bolt; 40. Ash discharge valve; 50. Collection tank; 60. Support frame. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Example 1

[0050] refer to Figures 1 to 5 and Figure 9 An environmentally friendly dust removal device for building decoration engineering according to a preferred embodiment of the present invention will be described in detail below, including:

[0051] The main body shell 10 includes a cavity 11 formed inside itself. The cavity 11 is a space for airflow spiral motion and dust separation. Its volume and shape are adapted to the airflow spiral motion to ensure that the airflow can move fully in spiral motion, thereby completing dust separation and collection.

[0052] The regulating mechanism includes a flow guiding unit disposed inside the cavity 11 and an air inlet duct disposed outside the cavity 11. The flow guiding unit includes a spiral tube 30, a limiting plate 31 fixedly connected to the spiral tube 30, and several fixing threads 32 fixedly connected to the limiting plate 31. The flow guiding unit is used to guide the airflow entering the cavity 11 to move in a spiral shape along the spiral tube 30 and the fixing threads 32, thereby strengthening the spiral intensity of the airflow, reducing the turbulence of the airflow in the cavity 11, and blocking the dust carried by the airflow on both sides of the airflow to form a physical barrier, thereby contacting and collecting the dust carried by the airflow.

[0053] The rotating ring, comprising a rotating housing 20 and a limiting outlet housing 22 fitted onto the outside of the air inlet duct, is used to drive the adjustment mechanism to rotate via its connection to the air inlet duct, enhancing the guiding effect of the spiral tube 30 and the flow guiding unit and expanding the effective range of the air inlet duct. Specifically, it drives the flow guiding unit to rotate within the cavity 11, strengthening the dynamic guidance of the airflow by the flow guiding unit, avoiding dust collection dead zones caused by airflow following a fixed trajectory, and also allowing the airflow direction of the air inlet channel to continuously change, further strengthening the intensity of the spiral motion of the airflow. Furthermore, through the design of the air inlet duct, the dust collection device can capture airflow at different angles and heights, expanding the capture range.

[0054] Also includes:

[0055] The exhaust pipe 12 has one end located inside the cavity 11 and the other end extending to the top outer side of the main body shell 10 and fixedly connected to the side wall of the cavity 11. It is coaxial with the main body shell 10 to ensure that the clean gas after dust separation is smoothly discharged along the inside of the cavity 11, serving as the exhaust channel of the cavity 11.

[0056] The top shell 13 is located on top of the cavity 11 and covers the top of the cavity 11. It is fixedly connected to the air outlet pipe 12, providing support for the subsequent installation of the rotating shell 20 and ensuring the stable rotation of the rotating shell 20.

[0057] The ash discharge valve 40 is fixedly connected to the bottom of the main body shell 10 and communicates with the cavity 11. Through its own valve adjustment function, it can control the rate of dust discharge and is used to evenly discharge the dust falling from the cavity 11 downwards.

[0058] The collection tank 50 is detachably connected to the end of the ash discharge valve 40 away from the main housing 10, and is used to collect dust falling from the cavity 11 and the ash discharge valve 40.

[0059] The support frame 60 is fixedly connected to the outer side wall of the main body shell 10. It is used to support and erect the main body shell 10, ensuring the installation and disassembly space of the collection tank 50, and also ensuring the stability of the entire dust removal device of the main body shell 10.

[0060] The limiting plate 31 is positioned on the side of the spiral tube 30 near the outlet pipe 12. This design ensures that when the guide unit rotates, the limiting plate 31 and the inner wall of the main housing 10 form a discontinuous guiding and restricting effect based on the position of the spiral tube 30's airflow outlet. This prevents the airflow from drifting outwards after moving away from the spiral tube 30, thus avoiding the formation of a continuous and strong spiral airflow. Furthermore, in the initial stage of airflow entering the cavity 11, the limiting plate 31 also blocks dust near the location of the airflow that is close to the limiting plate 31 and away from the inner wall of the main housing 10, thereby collecting dust in this area. This prevents fine dust from remaining uncollected even after the airflow has completed its spiral trajectory, thus enhancing the dust removal effect on fine dust. Additionally, the curvature of the limiting plate 31 is the same as that of the inner wall of the main housing 10, preventing a gap from forming between the limiting plate 31 and the inner wall of the main housing 10 when the spiral tube 30 moves to its closest point to the inner wall of the main housing 10, which could hinder the spiral movement of the airflow within the cavity 11.

[0061] Several fixed threads 32 are located on the side of the limiting plate 31 away from the air outlet pipe 12, so that when the airflow enters the spiral tube 30 through the spiral tube 30, the several fixed threads 32 can play a spiral guiding role on the airflow located between the inner wall of the main body shell 10 and the limiting plate 31, thereby strengthening the spiral strength of the airflow.

[0062] The thread shape of several fixed threads 32 is the same as that of the spiral tube 30, ensuring that the airflow continues to move in a spiral motion along the same trajectory of the fixed threads 32 after passing through the spiral tube 30. The spacing between adjacent fixed threads 32 is the same as the height of the internal channel of the spiral tube 30, which allows the airflow to transition smoothly between the spiral tube 30 and the fixed threads 32, while forming a uniform airflow channel.

[0063] The air intake duct includes:

[0064] The intermediate tube 33 connects to the spiral tube 30 at one end and extends from the limiting outlet shell 22 to the outside of the main body shell 10 at the other end, ensuring that the spiral tube 30 is connected to the outside. The intermediate tube 33 is sleeved with the limiting outlet shell 22 to ensure a stable connection between the air inlet pipe and the rotating ring, and can rotate synchronously under the drive of the rotating ring. At the same time, it is convenient to adjust the distance between the air outlet of the spiral tube 30 and the inner wall of the main body shell 10 in the horizontal direction, so as to adjust the width of the spiral airflow and the dust removal effect according to actual needs. For example, for large dust particles, the spiral tube 30 can be adjusted towards the center of the cavity 11 to reduce the width of the spiral airflow. At this time, the spiral trajectory of the airflow is more concentrated, and the coarse dust particles only need to move a short distance under the action of centrifugal force to contact the inner wall of the main body shell 10 and settle quickly, avoiding the rebound and backflow of coarse particles after hitting the inner wall due to excessive airflow width, thus improving the dust removal efficiency of coarse particles. For fine dust particles, the spiral tube 30 can be adjusted towards the inner wall of the cavity 11 to expand the width of the spiral airflow. At this time, the spiral trajectory of the airflow is closer to the inner wall, and the fine dust particles do not need to travel a long distance laterally to contact the inner wall. At the same time, the wider spiral trajectory can extend the movement time of the airflow in the cavity 11. The longer spiral path allows the fine particles to have enough time to be thrown towards the inner wall by centrifugal force, thereby solving the problem of incomplete removal of fine particles by traditional rotary dust collectors.

[0065] The telescopic pipe 34 is connected at one end to the end of the intermediate pipe 33 furthest from the spiral pipe 30, and the other end is the air inlet. The telescopic function of the telescopic pipe 34 allows the length of the air inlet pipe to be adjusted according to the actual needs of the construction site, and can flexibly adapt to dust sources at different distances. When the dust source is far away, the telescopic pipe 34 can be extended to shorten the air inlet distance and improve the capture efficiency of the dust-laden airflow. When the space at the construction site is limited, the telescopic pipe 34 can be shortened to reduce the space occupied by the device.

[0066] Several second fixing bolts 35 are threadedly connected to the intermediate pipe 33 and the telescopic pipe 34 to fix the intermediate pipe 33 and the telescopic pipe 34 together, prevent the intermediate pipe 33 and the telescopic pipe 34 from shifting when rotating, ensure the length stability of the air inlet pipe, and the threaded connection method facilitates disassembly and readjustment.

[0067] The telescopic pipe 34 has a telescopic locking function, which makes the length of the telescopic pipe 34 adjustable and stable. The telescopic pipe 34 can be fixed at any adjustable length to ensure that the air intake pipe can maintain the required length in different construction scenarios.

[0068] The following is the complete working process and working principle of the above embodiments:

[0069] First, the main body shell 10 is stably erected using the support frame 60. Based on the distance to the dust source at the construction site, the length of the telescopic pipe 34 is adjusted, and it is fixed to the intermediate pipe 33 using the second fixing bolt 35, ensuring the air inlet duct meets the dust capture requirements. Then, by adjusting the connection between the intermediate pipe 33 and the limiting outlet shell 22, the horizontal position of the spiral pipe 30 within the cavity 11 is adjusted, optimizing the spiral airflow width for large or fine dust particles. At this point, the dust-laden airflow enters the spiral pipe 30 through the telescopic pipe 34 and the intermediate pipe 33, and begins spiral motion under the guidance of the spiral pipe 30. It then flows through the fixing thread 32 on the side of the limiting plate 31 away from the outlet pipe 12. The airflow continues to move along the spiral trajectory within the cavity 11. During this process, dust particles are pushed towards the inner wall of the main body shell 10 by centrifugal force, and the limiting plate 31 blocks fine dust particles far from the inner wall in the airflow, forming a physical barrier and assisting in collection, preventing fine dust particles from failing to be captured due to insufficient travel distance. Dust that comes into contact with the inner wall of the main body shell 10 and the limiting plate 31 will fall down along the inner wall of the main body shell 10 and the limiting plate 31 to the ash discharge valve 40, and after being regulated by the ash discharge valve 40, it will fall evenly into the detachable collection tank 50, while the purified airflow will be discharged through the air outlet pipe 12.

[0070] Example 2

[0071] refer to Figures 1 to 8 One end of the limiting outlet shell 22 is fixedly connected to the outside of the rotating shell 20 to ensure the stability of the limiting outlet shell 22, and connects to the inside of the rotating shell 20 to ensure stable connection with the intermediate pipe 33, thereby stably driving the intermediate pipe 33 and the entire air inlet pipe and guide unit to rotate.

[0072] The rotating ring also includes:

[0073] Several rotating wheels 21 are respectively arranged on the upper and lower sides of the rotating shell 20 and fixedly connected to the rotating shell 20. They are used to reduce the friction when the rotating shell 20 rotates, reduce the load on the drive motor 26, and improve the operating flexibility and service life of the rotating ring.

[0074] Several first fixing bolts 23 are threadedly connected to the limiting outlet shell 22 and the intermediate tube 33 to fix the limiting outlet shell 22 and the intermediate tube 33 together, ensuring that when the rotating shell 20 drives the limiting outlet shell 22 to rotate, the intermediate tube 33 can rotate synchronously, avoiding airflow leakage or component wear caused by relative sliding between the two. The threaded connection method also facilitates installation, disassembly and maintenance.

[0075] The gear ring 24 is fixedly connected to the rotating shell 20 and is set on the top of the rotating shell 20 and the top shell 13. The inner side is set as the gear end, so that the rotation of the gear ring 24 can drive the rotating shell 20 to rotate synchronously, thereby driving the adjustment mechanism to rotate, and finally achieving the stable rotation of the adjustment mechanism.

[0076] The protective shell 25 is fixedly connected to the top of the gear ring 24, preventing external dust and objects from contacting the rotating gear end of the gear ring 24. This prevents the gear from getting stuck, worn or corroded due to impurities, extends the service life of the gear ring 24 and the output gear of the drive motor 26, and also avoids the rotating gear end from causing safety hazards to the operator, thus improving the safety of the device.

[0077] The drive motor 26 is fixedly connected to the top shell 13, and its output end is set as a gear and meshes with the gear ring 24 to drive the gear ring 24 and the rotating shell 20 to rotate.

[0078] The rotating shell 20 is located between the main shell 10 and the top shell 13. Several rotating wheels 21 at the top and bottom of the rotating shell 20 contact the top shell 13 and the main shell 10 respectively, providing stable support points for the rotating shell 20 and ensuring that the rotating shell 20 will not deviate during rotation. The rotating shell 20 rotates coaxially with the main shell 10 and the air outlet pipe 12.

[0079] The following is the complete working process and working principle of the above embodiments:

[0080] After the position of the flow guiding unit and the length of the air inlet duct are adjusted, the drive motor 26 is started. Its output gear meshes with the gear ring 24, causing the gear ring 24 to rotate, which in turn drives the rotating housing 20 to rotate. The rotating housing 20, secured by the limiting outlet housing 22 and the first fixing bolt 23, drives the air inlet duct composed of the intermediate pipe 33 and the telescopic pipe 34, and the flow guiding unit to rotate synchronously and coaxially. The dust-laden airflow enters the spiral pipe 30 through the telescopic pipe 34 and the intermediate pipe 33, where the spiral motion is enhanced under the guidance of the rotating spiral pipe 30 and the fixing thread 32. Simultaneously, the protective housing 25 protects the inner gear end of the gear ring 24, preventing impurities from affecting operation or causing safety hazards.

[0081] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly dust removal device for building decoration projects, characterized in that, include: The main body shell (10) includes a cavity (11) opened inside itself. The regulating mechanism includes a flow guiding unit disposed in the cavity (11) and an air inlet pipe disposed outside the cavity (11). The flow guiding unit includes a spiral tube (30), a limiting plate (31) fixedly connected to the spiral tube (30), and a plurality of fixing threads (32) fixedly connected to the limiting plate (31). The flow guiding unit is used to guide the airflow entering the cavity (11) to move in a spiral shape along the spiral tube (30) and the fixing threads (32), and to block the dust carried by the airflow on both sides of the airflow. The rotating ring includes a rotating shell (20) and a limiting outlet shell (22) sleeved on the outside of the air inlet pipe. It is used to drive the adjustment mechanism to rotate through the connection with the air inlet pipe, thereby enhancing the guiding effect of the spiral tube (30) and the flow guiding unit and expanding the effective range of the air inlet pipe.

2. The environmentally friendly dust removal device for building decoration projects according to claim 1, characterized in that, Also includes: The air outlet pipe (12) has one end located inside the cavity (11) and the other end extends to the top outside of the main body shell (10) and is fixedly connected to the side wall of the cavity (11). It is coaxial with the main body shell (10) and serves as the air outlet channel of the cavity (11). The top shell (13) is located at the top of the cavity (11) and is fixedly connected to the air outlet pipe (12); The ash discharge valve (40) is fixedly connected to the bottom of the main body shell (10) and communicates with the cavity (11) to uniformly discharge the dust falling from the cavity (11) downwards; A collection tank (50) is detachably connected to the end of the ash discharge valve (40) away from the main body shell (10) for collecting dust falling from the cavity (11) and the ash discharge valve (40); The support frame (60) is fixedly connected to the outer side wall of the main body shell (10) and is used to support and support the main body shell (10).

3. The environmentally friendly dust removal device for building decoration projects according to claim 2, characterized in that: The limiting plate (31) is positioned on the side of the spiral tube (30) near the air outlet pipe (12), and the curvature of the limiting plate (31) is the same as the curvature of the inner wall of the main body shell (10).

4. The environmentally friendly dust removal device for building decoration projects according to claim 2, characterized in that: Several of the fixing threads (32) are located on the side of the limiting plate (31) away from the air outlet pipe (12).

5. The environmentally friendly dust removal device for building decoration projects according to claim 1, characterized in that: The thread shape of some of the fixed threads (32) is the same as that of the spiral tube (30), and the spacing between adjacent fixed threads (32) is the same as the height of the internal channel of the spiral tube (30).

6. The environmentally friendly dust removal device for building decoration projects according to claim 2, characterized in that: The air inlet duct includes: The intermediate tube (33) is connected at one end to the spiral tube (30) and at the other end extends from inside the limiting outlet shell (22) to the outside of the main body shell (10). The intermediate tube (33) is sleeved with the limiting outlet shell (22). The telescopic tube (34) is connected at one end to the end of the intermediate tube (33) away from the spiral tube (30), and the other end is the air inlet; Several second fixing bolts (35) are threadedly connected to the intermediate tube (33) and the telescopic tube (34) to fix the intermediate tube (33) and the telescopic tube (34) together.

7. The environmentally friendly dust removal device for building decoration projects according to claim 6, characterized in that: The telescopic tube (34) has a telescopic locking function.

8. The environmentally friendly dust removal device for building decoration engineering according to claim 1, characterized in that: One end of the limiting outlet shell (22) is fixedly connected to the outside of the rotating shell (20) and communicates with the inside of the rotating shell (20).

9. The environmentally friendly dust removal device for building decoration engineering according to claim 6, characterized in that: The rotating ring also includes: Several rotating wheels (21) are respectively disposed on the upper and lower sides of the rotating shell (20) and fixedly connected to the rotating shell (20) to reduce the friction when the rotating shell (20) rotates; Several first fixing bolts (23) are threadedly connected to the limiting outlet shell (22) and the intermediate tube (33) to fix the limiting outlet shell (22) and the intermediate tube (33) together; A gear ring (24) is fixedly connected to the rotating shell (20) and is disposed on the top of the rotating shell (20) and the top shell (13), with the inner side being a gear end; The protective shell (25) is fixedly connected to the top of the gear ring (24) to prevent external dust and objects from contacting the rotating gear end of the gear ring (24). The drive motor (26) is fixedly connected to the top shell (13), and its output end is set as a gear and meshes with the gear ring (24) to drive the gear ring (24) and the rotating shell (20) to rotate.

10. The environmentally friendly dust removal device for building decoration projects according to claim 2, characterized in that: The rotating shell (20) is located between the main shell (10) and the top shell (13). Several rotating wheels (21) at the top and bottom of the rotating shell (20) are in contact with the top shell (13) and the main shell (10) respectively. The rotating shell (20) rotates coaxially with the main shell (10) and the air outlet pipe (12).

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