CN116900849A - Wall surface ash removal polishing treatment device for building engineering decoration - Google Patents

Abstract

The invention discloses a wall cleaning and polishing device for decoration in construction projects. Its structure includes a motor, a worm, a guide rod, a processing mechanism, and a dust collection mechanism. The motor is installed inside one end of the guide positioning frame, and the worm is driven by starting the motor. By rotating, the sliding block slides smoothly inside the guide positioning frame, and at the same time, the cylinder drives the lifting rod to lift vertically inside the upper end of the fixed pipe, so that the grinder can perform smooth vertical and horizontal positions on the wall. Grinding replaces workers' manual grinding work and improves grinding efficiency; with the support of four universal balls on the wall, the grinding head moves on the wall to improve the overall flatness; dust particles enter the inside of the dust collection box Finally, the dust particles are collected centrally through the filter bag at the inner bottom of the pull-out frame, and the pull-out frame can be pulled out from the inside of the dust collection box to clean the dust particles.

Description

A wall cleaning and polishing device for decoration in construction projects

Technical field

The present invention relates to the field of construction engineering, and more specifically, to a wall cleaning and polishing device for decoration in construction engineering.

Background technique

The function of construction engineering decoration engineering is to protect various components of the building from natural wind, rain, and moisture erosion, improve heat insulation, sound insulation, and moisture-proof functions, improve the durability of the building, and extend the service life of the building. Among them, After putting putty on the wall inside the building, you need to use a cleaning and polishing device to polish the uneven areas of the wall to make the overall indoor wall smoother; however, since the cleaning and polishing device is not working on the wall, During the grinding process, the workers carry out grinding work on the wall with a grinding device held by workers. The efficiency of manual grinding is low and it is difficult to maintain a high level of flatness, and the uneven putty on the wall has to be polished. The friction and grinding of the sheets turn into fine dust particles. The fine dust particles are easy to fly indoors, causing workers to easily inhale the dust particles, reducing the safety of construction.

Contents of the invention

The technical solution adopted by the present invention to achieve the technical purpose is: a wall cleaning and polishing device for decoration in construction projects. Its structure includes a movable base plate, a guide positioning frame, and a mobile host. The upper end of the movable base plate is in contact with the guide positioning frame. The bottom of the frame is welded, and the upper end of the mobile base plate is fixed to the lower part of the front end of the mobile host. The bottom of the rear end of the mobile host is installed inside the guide and positioning frame. The guide and positioning frame has a cavity cuboid groove structure.

As a further improvement of the present invention, the mobile host includes a motor, a worm, a guide rod, a processing mechanism, and a dust suction mechanism. The motor is installed inside one end of the guide positioning frame, and the output end of the motor rotates synchronously with the worm, and the worm A clearance fit is used to penetrate the inside of the processing mechanism and is threadedly connected. The guide rod is installed inside the guide positioning frame, and the guide rod uses a clearance fit to penetrate inside the processing mechanism. The lower end of the processing mechanism is slidably installed inside the guide positioning frame. The upper end of the processing mechanism is connected to the upper end of the dust suction mechanism, and the lower end of the dust suction mechanism is fixedly installed on the upper end of the moving base plate. There are two guide rods, and they are installed up and down inside the guide positioning frame. At the same time, a clearance fit is used throughout the processing The upper and lower ends of the organization.

As a further improvement of the present invention, the processing mechanism includes a sliding block, a moving base plate, a cylinder, a fixed pipe, a lifting rod, and a grinder. The sliding block is slidably installed inside the guide positioning frame, and the upper end of the sliding block is provided with a moving base plate. The movable base plate is slidably installed on the upper end of the guide positioning frame. The upper end of the movable base plate is welded to the bottom of the fixed pipe. A cylinder is installed inside the fixed pipe, and the top of the cylinder is welded to the bottom of the lifting rod. The lower end of the lifting rod is made of The clearance fit runs through the interior of the upper end of the fixed pipe, and a grinder is installed on the upper end of the lifting rod. The interior of the grinder is connected to the upper end of the dust suction mechanism. The cylinder, fixed pipe and lifting rod are in the same vertical position. superior.

As a further improvement of the present invention, the grinder includes an outer frame, a universal ball, a dust suction groove, a guide plate, and a grinding head. The bottom of the outer frame is welded to the top of the lifting rod, and a universal ball is installed inside the front end of the outer frame. Toward the ball, the dust suction groove runs through the inside of the outer frame, and a guide plate is provided inside the rear end of the dust suction groove. The rear end of the dust suction groove is connected through with the upper end of the dust suction mechanism. The grinding head is installed inside the outer frame. middle end, and the front end of the grinding head and the front end surface of the universal ball are on the same vertical plane. There are four universal balls and they are located at the four corners of the front end surface of the outer frame. The front end of the dust suction groove is in the shape of Ring structure and located on the outside of the grinding head.

As a further improvement of the present invention, the grinding head includes a motor, a dust-proof mechanism, and a grinding disc. The motor is connected to the grinding disc through a dust-proof mechanism. The motor and the dust-proof mechanism are both installed at the middle end of the outer frame, so The front end of the grinding disc and the front end surface of the universal ball are on the same vertical plane, and the outer structures of the motor, dustproof mechanism and grinding disc are all cylindrical structures and are on the same axis.

As a further improvement of the present invention, the dust-proof mechanism includes a dust-proof baffle, a roller, a driving rod, a replacement head, a top spring, and a locking piece. The dust-proof baffle is installed between the motor and the grinding disc and prevents There is a roller on the inside of the dust baffle, and the roller is slidingly connected to the outside of the drive rod. The motor drives the grinding disc to rotate synchronously through the drive rod. The closing pieces are connected, and the engaging pieces are engaged and installed between the center of the grinding piece and the replacement head. There are six said rollers, and they are distributed in an annular shape between the inner side of the dust-proof baffle and the outer side of the driving rod.

As a further improvement of the present invention, the dust suction mechanism includes a dust suction pipe, a dust collection box, a cleaning mechanism, and a suction fan. The upper end of the dust suction pipe is connected to the rear end of the dust suction tank, and the lower end of the dust suction pipe is connected to On the top of the dust collection box, a cleaning mechanism is installed at the upper end of the dust collection box. The cleaning mechanism is located above the suction fan, and the suction fan is installed at the bottom of the dust collection box. The dust suction pipe is a rubber hose, which has good Extensibility.

As a further improvement of the present invention, the cleaning mechanism includes a pull-out frame, a filter bag, and a positioning frame. The pull-out frame is installed inside the upper end of the dust collecting box using clearance fit, and a filter cloth bag is provided at the bottom of the inside of the pull-out frame. The rear end of the pull-out frame is engaged and installed inside the positioning frame. The positioning frame is fixedly installed inside the upper end of the dust collection box. There is also a magnetic suction plate inside the positioning frame. The magnetic suction plate connects to the back end of the pull-out frame. Suction connection.

The beneficial effects of the present invention are:

1. Start the motor to drive the worm to rotate. During the rotation, under the lateral guidance of the guide rod, the sliding block slides smoothly inside the guide positioning frame. At the same time, the cylinder performs telescopic work inside the fixed tube, driving the lifting rod to move The upper end of the fixed pipe is raised and lowered vertically, so that the grinder can perform smooth grinding on the wall in both vertical and horizontal directions, replacing workers' manual grinding work and improving grinding efficiency;

2. When the grinder is moving and grinding the wall putty, it uses the auxiliary sliding of the four universal balls to ensure that the outer frame can drive the grinding head to move vertically and horizontally on the wall, and in the four With the support of the universal ball on the wall, the polishing head can move on the wall to improve the overall flatness;

3. By starting the motor, the grinding disc is rotated and polished under the driving of the driving rod. Through the assisted sliding of the roller, it is ensured that the driving rod will not drive the dust-proof baffle to rotate or deflect during the rotation, making the dust-proof The baffle can be firmly installed between the motor and the grinding disc to block dust particles and prevent the motor from stopping due to the influence of dust particles;

4. The dust particles generated by grinding the wall putty with the grinding head can be fully inhaled through the front end of the dust suction trough, and the deflector at the rear end of the dust suction trough can prevent the dust particles from flowing back and avoid Dust particles fly indoors during the grinding process;

5. After the dust particles enter the dust collection box, the dust particles are collected through the filter bag at the bottom of the inside of the pull-out frame. When the filter bag collects a large amount of dust particles, pull out the pull-out frame from inside the dust collection box. , clean the dust particles, and then push the pull-out frame back into the dust box. The magnetic suction plate inside the positioning frame is connected to the rear end of the pull-out frame through magnetic suction to avoid the pull-out frame from shaking during the suction process. , ensure that the filter bag at the bottom of the inside of the pull-out frame can collect dust particles in a centralized manner.

Description of the drawings

Figure 1 is a schematic structural diagram of a wall cleaning and polishing device for decoration in construction projects according to the present invention.

Figure 2 is a schematic side view of the internal structure of the mobile host of the present invention.

Figure 3 is a schematic side view of the internal structure of the processing mechanism of the present invention.

Figure 4 is a schematic internal side view and a front structural view of the grinder of the present invention.

Figure 5 is a schematic side view of the structure of the grinding head of the present invention.

Figure 6 is a schematic side view and a front structural view of the dust-proof mechanism of the present invention.

Figure 7 is a schematic diagram of the partial internal structure of the dust collecting mechanism of the present invention.

Figure 8 is a schematic diagram of the three-dimensional disassembled structure of the cleaning mechanism of the present invention.

In the picture: mobile base plate-Y, guide positioning frame-H, mobile host machine-D, motor-d9, worm-d2, guide rod-d4, processing mechanism-d5, vacuum mechanism-d8, sliding block-d54, mobile base plate -g56, cylinder-d52, fixed pipe-d57, lifting rod-d59, grinder-d51, outer frame-1k, universal ball-1z, vacuum trough-1t, guide plate-1d, grinding head-1m, Motor-m8, dust-proof mechanism-m2, grinding disc-m6, dust-proof baffle-m24, roller-m29, drive rod-m22, replacement head-m26, top spring-m21, engaging piece-m25, vacuum tube -d84, dust box-d82, cleaning mechanism-d86, suction fan-d88, pull-out frame-6t, filter bag-6w, positioning frame-6k.

Implementation

The present invention will be further described below in conjunction with the accompanying drawings:

Example

As shown in Figure 1 to Figure 6:

The present invention is a wall cleaning and polishing device for decoration in construction projects. Its structure includes a movable base plate Y, a guide positioning frame H, and a mobile host D. The upper end surface of the movable base plate Y is welded to the bottom of the guide positioning frame H, and The upper end of the mobile base plate Y is fixed below the front end of the mobile host D, and the bottom of the rear end of the mobile host D is installed inside the guide positioning frame H;

The guide positioning frame H has a hollow cuboid groove structure, which ensures that the rear end surface of the guide positioning frame H can be parallel to the bottom of the wall, so that the upper end of the mobile host D can be attached to the wall for parallel grinding work. .

Among them, the mobile host D includes a motor d9, a worm d2, a guide rod d4, a processing mechanism d5, and a dust collection mechanism d8. The motor d9 is installed inside one end of the guide positioning frame H, and the output end of the motor d9 is synchronized with the worm d2. Rotate, the worm d2 uses a clearance fit to penetrate the inside of the processing mechanism d5 and is threadedly connected. The guide rod d4 is installed inside the guide positioning frame H, and the guide rod d4 uses a clearance fit to penetrate into the inside of the processing mechanism d5. The processing mechanism The lower end of d5 is slidably installed inside the guide positioning frame H, the upper end of the processing mechanism d5 is connected through with the upper end of the dust suction mechanism d8, and the lower end of the dust suction mechanism d8 is fixedly installed on the upper end surface of the moving base plate Y;

There are two guide rods d4, and they are installed up and down inside the guide positioning frame H. At the same time, they use clearance fit to penetrate the upper and lower ends of the processing mechanism d5. The processing mechanism d5 is driven by the rotation of the worm d2. The driving process The lateral guidance of the two guide rods d4 ensures that the lower end of the processing mechanism d5 can slide smoothly inside the guide positioning frame H.

Among them, the processing mechanism d5 includes a sliding block d54, a moving base plate g56, a cylinder d52, a fixed pipe d57, a lifting rod d59, and a grinder d51. The sliding block d54 is slidably installed inside the guide positioning frame H, and the upper end of the sliding block d54 There is a movable base plate g56, which is slidably installed on the upper end of the guide positioning frame H. The upper end surface of the movable base plate g56 is welded to the bottom of the fixed pipe d57. A cylinder d52 is installed inside the fixed pipe d57, and the top of the cylinder d52 It is welded to the bottom of the lifting rod d59. The lower end of the lifting rod d59 adopts a clearance fit and penetrates through the upper end of the fixed pipe d57. A grinder d51 is installed on the upper end of the lifting rod d59. The interior of the grinder d51 is connected with the upper end of the dust suction mechanism d8. connect;

The cylinder d52, the fixed pipe d57 and the lifting rod d59 are in the same vertical position. The telescopic movement of the cylinder d52 drives the lifting rod d59 to vertically lift inside the upper end of the fixed pipe d57, so that the grinder d51 can Sand the wall in vertical motions.

Among them, the grinder d51 includes an outer frame 1k, a universal ball 1z, a dust suction tank 1t, a guide plate 1d, and a grinding head 1m. The bottom of the outer frame 1k is welded to the top of the lifting rod d59, and the front end of the outer frame 1k Universal balls 1z are installed inside, and the dust suction groove 1t runs through the interior of the outer frame 1k, and a deflector 1d is provided inside the rear end of the dust suction groove 1t. The rear end of the dust suction groove 1t is connected to the upper end of the dust suction mechanism d8. Through connection, the grinding head 1m is installed at the middle end of the outer frame 1k, and the front end of the grinding head 1m and the front end surface of the universal ball 1z are on the same vertical plane;

There are four universal balls 1z, and they are located at the four corners of the front end surface of the outer frame 1k. Through the auxiliary sliding of the four universal balls 1z, it is ensured that the outer frame 1k can drive the grinding head 1m to perform vertical grinding on the wall. And horizontal moving grinding, and with the support of the four universal balls 1z on the wall, the grinding head 1m is raised to move on the wall to grind the overall flatness. The front end of the dust suction tank 1t has a ring structure, and Located outside the grinding head 1m, the dust particles generated by the grinding head 1m when grinding the wall putty can be fully inhaled through the front end of the dust suction tank 1t.

Among them, the grinding head 1m includes a motor m8, a dust-proof mechanism m2, and a grinding piece m6. The motor m8 is connected to the grinding piece m6 through the dust-proof mechanism m2. The motor m8 and the dust-proof mechanism m2 are both installed on the outer frame 1k. At the inner middle end, the front end of the grinding plate m6 and the front end surface of the universal ball 1z are on the same vertical plane;

The outer structures of the motor m8, the dust-proof mechanism m2 and the grinding disc m6 are all cylindrical structures and are on the same axis, ensuring that the rotation of the motor m8 can drive the grinding disc m6 to rotate smoothly on the wall. .

Among them, the dust-proof mechanism m2 includes a dust-proof baffle m24, a roller m29, a driving rod m22, a replacement head m26, a top spring m21, and an engaging piece m25. The dust-proof baffle m24 is installed on the motor m8 and the grinding piece m6. between them, and a roller m29 is provided on the inside of the dust-proof baffle m24. The roller m29 is slidingly connected to the outside of the driving rod m22. The motor m8 drives the grinding blade m6 to rotate synchronously through the driving rod m22. The front end of the driving rod m22 is provided with Replacement head m26, and the inner edge of the replacement head m26 is connected to the engaging piece m25 through the top spring m21, and the engaging piece m25 is engaged and installed between the center of the circle of the grinding piece m6 and the replacement head m26;

There are six rollers m29, and they are distributed in an annular shape between the inner side of the dust-proof baffle m24 and the outer side of the driving rod m22. Through the auxiliary sliding of the roller m29, it is ensured that the driving rod m22 will not drive the anti-dust baffle during rotation. The dust baffle m24 rotates or shifts to ensure that the dust baffle m24 can be firmly installed between the motor m8 and the grinding disc m6 to block dust particles and prevent the motor m8 from stopping its rotation due to the influence of dust particles.

The specific usage and function of this embodiment:

In the present invention, when polishing the putty on the interior wall of a building, the rear end surface of the guide positioning frame H is first parallel to the bottom of the wall, so that the upper end of the polisher d51 is parallel to the wall. Then, the starter motor d9 drives the worm d2 to rotate. During the rotation, under the lateral guidance of the guide rod d4, the sliding block d54 slides smoothly inside the guide positioning frame H, and at the same time, the cylinder d52 expands and contracts inside the fixed tube d57. work, driving the lifting rod d59 to lift vertically inside the upper end of the fixed pipe d57, so that the grinder d51 can perform smooth grinding on the wall in the vertical and horizontal directions, replacing the manual grinding work of workers, and improving the grinding efficiency. Efficiency, while the grinder d51 is moving and grinding the wall putty, through the assisted sliding of the four universal balls 1z, it ensures that the outer frame 1k can drive the grinding head 1m to move vertically and horizontally on the wall. , and with the support of the four universal balls 1z on the wall, the polishing head 1m is improved to move on the wall to polish the overall flatness. Through the start of the motor m8, the grinding blade m6 is driven by the drive rod m22 to rotate. Grinding, during the rotation process of the drive rod m22, through the assisted sliding of the roller m29, ensure that the drive rod m22 will not drive the dust-proof baffle m24 to rotate or deflect during the rotation process, so that the dust-proof baffle m24 can be firm It is installed between the motor m8 and the grinding disc m6 to block the dust particles and prevent the motor m8 from being affected by the dust particles and stopping the rotation. The generated dust particles can pass the front end of the dust suction tank 1t to push the grinding head 1m against the wall putty. The dust particles generated by grinding are fully inhaled, and the deflector 1d at the rear end of the dust suction tank 1t can prevent the dust particles from flowing back and avoid the dust particles flying indoors during the grinding process. The grinding blade m6 is used to clean the wall. After long-term polishing, wear is easy to occur. Under the action of the elastic force exerted by the top spring m21 inside the edge of the replacement head m26, the engaging piece m25 can quickly disassemble and install the polishing piece m6, improving the efficiency of replacing the polishing piece m6.

Example

As shown in Figure 7 to Figure 8:

Among them, the dust suction mechanism d8 includes a dust suction pipe d84, a dust collection box d82, a cleaning mechanism d86, and a suction fan d88. The upper end of the dust suction pipe d84 is connected to the rear end of the dust suction tank 1t. The dust suction pipe d84 The lower end is connected to the top of the dust collecting box d82. A cleaning mechanism d86 is installed at the upper end of the dust collecting box d82. The cleaning mechanism d86 is located above the suction fan d88, and the suction fan d88 is installed at the bottom of the dust collecting box d82;

The dust suction pipe d84 is a rubber hose with good extensibility, ensuring that during the movement of the outer frame 1k, the dust suction pipe d84 can be firmly connected between the dust suction tank 1t and the dust collection box d82 , discharge the dust particles generated by grinding into the interior of the dust collection box d82.

Among them, the cleaning mechanism d86 includes a pull-out frame 6t, a filter bag 6w, and a positioning frame 6k. The pull-out frame 6t is installed inside the upper end of the dust box d82 with a clearance fit, and a filter cloth bag is provided at the bottom of the inside of the pull-out frame 6t. 6w, the rear end of the pull-out frame 6t is engaged and installed inside the positioning frame 6k, and the positioning frame 6k is fixedly installed inside the upper end of the dust box d82;

There is also a magnetic suction plate inside the positioning frame 6k. The magnetic suction plate is connected to the rear end of the pull-out frame 6t through magnetic suction, which improves the firmness of the pull-out frame 6t installed inside the dust box d82 and avoids the need for air suction. During the process, the pull-out frame 6t shakes, ensuring that the filter cloth bag 6w at the inner bottom of the pull-out frame 6t can collect dust particles in a centralized manner.

The specific usage and function of this embodiment:

In the present invention, during the grinding process, the suction fan d88 at the inner bottom of the dust collection box d82 works synchronously, and the suction fan d88 generates suction inside the dust collection box d82, so that the dust suction pipe d84 moves the dust particles inside the dust suction tank 1t to The interior of the dust collecting box d82 is inhaled to prevent dust particles from flying indoors. After the dust particles enter the interior of the dust collecting box d82, the dust particles are collected centrally through the filter bag 6w at the inner bottom of the pull-out frame 6t. The dust particles are collected through the filter bag 6w. The collection can prevent dust particles from being inhaled into the inside of the suction fan d88, causing the suction fan d88 to fail to work normally. When the filter bag 6w collects a large amount of dust particles, pull out the pull-out frame 6t from the inside of the dust collecting box d82. The dust particles are cleaned, and then the pull-out frame 6t is pushed back into the dust box d82. The magnetic plate inside the positioning frame 6k is connected to the rear end of the pull-out frame 6t through magnetic suction. The pull-out frame 6t is raised and installed on the dust box d82. The internal firmness prevents the pull-out frame 6t from shaking during the suction process, and ensures that the filter bag 6w at the bottom of the inside of the pull-out frame 6t can centrally collect dust particles.

Those skilled in the art who utilize the technical solutions described in the present invention or are inspired by the technical solutions of the present invention to design similar technical solutions and achieve the above technical effects fall within the protection scope of the present invention.

Claims (8)

1. A wall cleaning and polishing device for decoration in construction projects. Its structure includes a movable base plate (Y), a guide positioning frame (H), and a mobile host (D). It is characterized by: The upper end surface of the movable base plate (Y) is welded to the bottom of the guide positioning frame (H), and the upper end surface of the movable base plate (Y) is fixed below the front end of the mobile host (D). The rear end bottom of the mobile host (D) is installed on Guide the inside of the positioning frame (H). 2. A wall cleaning and polishing device for construction engineering decoration according to claim 1, characterized in that: the mobile host (D) includes a motor (d9), a worm (d2), and a guide rod (d4) ), processing mechanism (d5), dust collection mechanism (d8), the motor (d9) is installed inside one end of the guide positioning frame (H), and the output end of the motor (d9) rotates synchronously with the worm (d2), the The worm (d2) uses a clearance fit to penetrate into the processing mechanism (d5) and is threadedly connected. The guide rod (d4) is installed inside the guide positioning frame (H), and the guide rod (d4) uses a clearance fit to penetrate into the processing mechanism (d5). Inside d5), the lower end of the processing mechanism (d5) is slidably installed inside the guide positioning frame (H), the upper end of the processing mechanism (d5) is connected through with the upper end of the dust suction mechanism (d8), and the lower end of the dust suction mechanism (d8) Fixedly installed on the upper end of the mobile base plate (Y). 3. A wall cleaning and polishing device for construction engineering decoration according to claim 2, characterized in that: the processing mechanism (d5) includes a sliding block (d54), a moving bottom plate (g56), and a cylinder ( d52), fixed tube (d57), lifting rod (d59), grinder (d51), the sliding block (d54) is slidably installed inside the guide positioning frame (H), and the upper end of the sliding block (d54) is provided with a moving bottom plate (g56), the movable base plate (g56) is slidably installed on the upper end of the guide positioning frame (H), the upper end surface of the movable base plate (g56) is welded to the bottom of the fixed pipe (d57), and the fixed pipe (d57) is installed internally. There is a cylinder (d52), and the top of the cylinder (d52) is welded to the bottom of the lifting rod (d59). The lower end of the lifting rod (d59) adopts a clearance fit and penetrates inside the upper end of the fixed pipe (d57). The lifting rod (d59) A grinder (d51) is installed on the upper end, and the inside of the grinder (d51) is connected throughly with the upper end of the dust suction mechanism (d8). 4. A wall cleaning and polishing device for construction engineering decoration according to claim 3, characterized in that: the polisher (d51) includes an outer frame (1k), a universal ball (1z), a suction Dust trough (1t), guide plate (1d), grinding head (1m), the bottom of the outer frame (1k) is welded to the top of the lifting rod (d59), and a universal ball is installed inside the front end of the outer frame (1k) (1z), the dust suction groove (1t) runs through the interior of the outer frame (1k), and a deflector (1d) is provided at the rear end of the dust suction groove (1t). It is connected through the upper end of the dust suction mechanism (d8). The grinding head (1m) is installed at the middle end of the outer frame (1k), and the front end of the grinding head (1m) and the front end surface of the universal ball (1z) are in the same vertical direction. on flat surface. 5. A wall cleaning and grinding device for construction engineering decoration according to claim 4, characterized in that: the grinding head (1m) includes a motor (m8), a dust-proof mechanism (m2), and a grinding disc (m6), the motor (m8) is connected to the grinding disc (m6) through the dust-proof mechanism (m2), the motor (m8) and the dust-proof mechanism (m2) are installed at the middle end of the outer frame (1k), The front end of the grinding disc (m6) and the front end surface of the universal ball (1z) are on the same vertical plane. 6. A wall cleaning and polishing device for construction engineering decoration according to claim 5, characterized in that: the dust-proof mechanism (m2) includes a dust-proof baffle (m24), a roller (m29), Driving rod (m22), replacement head (m26), top spring (m21), engaging piece (m25), the dust-proof baffle (m24) is installed between the motor (m8) and the grinding disc (m6), and There is a roller (m29) on the inside of the dust-proof baffle (m24). The roller (m29) is slidingly connected to the outside of the drive rod (m22). The motor (m8) drives the grinding disc (m6) synchronously through the drive rod (m22). Rotate, the front end of the driving rod (m22) is equipped with a replacement head (m26), and the inside of the edge of the replacement head (m26) is connected to the engaging piece (m25) through the top spring (m21), and the engaging piece (m25) The snap is installed between the center of the grinding disc (m6) and the replacement head (m26). 7. A wall cleaning and polishing device for construction engineering decoration according to claim 4, characterized in that: the dust suction mechanism (d8) includes a dust suction pipe (d84) and a dust collection box (d82) , cleaning mechanism (d86), suction fan (d88), the upper end of the dust suction pipe (d84) is connected to the rear end of the dust suction tank (1t), and the lower end of the dust suction pipe (d84) is connected to the dust collecting box (d82) ) top, a cleaning mechanism (d86) is installed at the upper end of the dust box (d82), the cleaning mechanism (d86) is located above the suction fan (d88), and the suction fan (d88) is installed on the dust box (d82) bottom. 8. A wall cleaning and polishing device for construction engineering decoration according to claim 7, characterized in that: the cleaning mechanism (d86) includes a pull-out frame (6t), a filter bag (6w), a positioning Frame (6k), the pull-out frame (6t) is installed inside the upper end of the dust box (d82) with clearance fit, and a filter cloth bag (6w) is provided at the inner bottom of the pull-out frame (6t), and the pull-out frame (6t) 6t) The rear end is snap-fitted inside the positioning frame (6k), and the positioning frame (6k) is fixedly installed inside the upper end of the dust box (d82).