Angle grinder with dust removal function

Abstract

The present application provides an angle grinder with a dust removal function, which relates to the field of grinding technology. The invention comprises a housing, a protective tube fixedly connected to the front end of the housing, a dust removal assembly provided on the inner wall of the protective tube, and a partition movably mounted on the front surface of a limiting ring plate. A plurality of impeller blades are fixedly connected to the rear surface of the partition in a circumferentially uniformly distributed manner, and a plurality of elastic paddles are fixedly connected to the front surface of the partition in a circumferentially uniformly distributed manner, and baffles are fixedly connected between the plurality of elastic paddles. The present application utilizes two adjacent elastic paddles to continuously collide with an arc-shaped protrusion, so that the space between them is compressed, and the pressure increases, thereby ejecting the stored dust particles. After the ejection, a negative pressure is formed, and the dust particles are contacted with the auxiliary window to absorb and store the dust particles, thereby adjusting the pressure by changing the storage space to absorb and eject the dust particles.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding, and in particular to an angle grinder with a dust removal function. Background Art

[0002] An angle grinder is a portable power tool, also known as an angle grinder or grinder. It mainly uses a built-in electric motor to drive a thin grinding wheel, rubber grinding wheel or wire wheel to rotate at high speed, thereby generating powerful grinding and cutting forces to achieve grinding, polishing, cutting and other operations on metal, stone, concrete and other materials.

[0003] When using an angle grinder, the operator needs to hold it in hand for operation. The rotating grinding wheel is in direct contact with the object to be grinded. The particles rubbed off will form dust and float in the air, posing a potential threat to the health of construction workers. At the same time, the grinding wheel is at risk of breaking due to fatigue during long-term rotation, but the existing structure of the angle grinder often lacks sufficient protective structure.

[0004] For example, the Chinese utility model patent (application number: 201821443163.7) discloses an "automatic grinding unit for the outer wall of large-diameter elbows, bent pipes, and straight pipes." Its specification discloses that the outer wall polishing of large-diameter push-stamped butt-welded elbows was previously done manually using a handheld grinder, first grinding and then polishing. This is especially true for heat-treated alloy pipes. The thick oxide scale and strong adhesion make it difficult to polish clean, resulting in low efficiency, poor surface finish, time-consuming and labor-intensive processing, and high risk. The grinding process also generates a large amount of dust, which degrades air quality in the production environment and harms worker health. The aforementioned patents can demonstrate the shortcomings of the existing technology.

[0005] Therefore, we make improvements to this and propose an angle grinder with dust removal function. Summary of the Invention

[0006] The purpose of the present invention is to improve the problems of dust generated during grinding and the lack of protection of the grinding wheel during rotation proposed in the background art.

[0007] In order to achieve the above-mentioned object of the invention, the present invention provides an angle grinder with a dust removal function to improve the above-mentioned problem.

[0008] The specific application is as follows:

[0009] An angle grinder with a dust removal function comprises a shell, a protective cylinder is fixedly connected to the front end of the shell, a side frame plate is fixedly connected to the inner wall of the protective cylinder, a fixing frame is fixedly connected below the side frame plate, a limiting ring plate is fixedly connected to the inner wall of the protective cylinder, a positioning shell is provided on the outer wall of the limiting ring plate, and the positioning shell is fixedly installed on the front end of the protective cylinder, a dust removal component is provided on the inner wall of the protective cylinder, and a collection component is provided on the side of the protective cylinder;

[0010] The dust removal assembly includes a partition movably mounted on the front surface of the limiting ring plate, a plurality of impeller blades are fixedly connected to the rear surface of the partition in a circumferentially evenly distributed manner, a plurality of elastic paddles are fixedly connected to the front surface of the partition in a circumferentially evenly distributed manner, baffles are fixedly connected between the plurality of elastic paddles, a circular plate is fixedly connected to the middle part of the side frame plate, a plurality of tooth plates are fixedly connected to the outer wall of the circular plate in a circumferentially evenly distributed manner, and an arc protrusion is provided at the lower side of the inner wall of the protective tube.

[0011] As a preferred technical solution of the present application, an arc-shaped shell is fixedly connected below the positioning shell, a guide window is provided on the upper surface of the arc-shaped shell, a splicing frame is provided on the inner wall of the guide window, an inclined plate is provided on one side of the inner wall of the splicing frame, an auxiliary window is provided below the protective tube, and is directly above the splicing frame, and a protective component is provided on the outer wall of the arc-shaped shell.

[0012] As a preferred technical solution of the present application, a motor is provided in the middle of the rear end surface of the partition, and the outer wall of the motor is fixedly mounted on the inner wall of the shell.

[0013] As the preferred technical solution of the present application, the output shaft end of the motor passes through the partition and is fixedly connected to a bevel gear, a gear ring is meshed and connected below the bevel gear, a positioning bolt is provided in the middle of the gear ring, a limiting nut is provided on the outer wall of the positioning bolt, and a grinding wheel is provided on the outer wall of the limiting nut.

[0014] As a preferred technical solution of the present application, the protective assembly includes a connecting rod movably installed on one side of the inclined plate, a limiting rod movably installed on the other end of the connecting rod, the outer wall of the arc shell is movably connected to the outer guard plate, a limiting groove is provided on one side of the upper surface of the outer guard plate, the outer wall of the limiting rod is movably connected to the guide plate, and is fixedly installed on the upper surface of the arc shell, an elastic hinge is provided on one side of the guide window, and the other side of the elastic hinge is movably installed on the side surface of the inclined plate.

[0015] As a preferred technical solution of the present application, the lower end of the inclined plate is fixedly connected to an elastic guard plate, and the lower end of the elastic guard plate is movably connected to the upper surface of the grinding wheel.

[0016] As a preferred technical solution of the present application, one end of the arc-shaped shell is fixedly connected to an auxiliary plate, and the side of the auxiliary plate is fixedly connected to an arc-shaped elastic telescopic rod.

[0017] As a preferred technical solution of the present application, the other end of the arc-shaped elastic telescopic rod is fixedly connected to a side plate, the side plate is fixedly mounted on the outer wall of the outer guard plate, and the outer guard plate is movably connected to the arc-shaped shell.

[0018] As a preferred technical solution of the present application, the collecting assembly includes a side rod fixedly installed in the middle of the side wall of the protective tube, the inner wall of the side rod is provided with a chamfered groove, and the outer wall of the side rod is movably connected to a handle.

[0019] As a preferred technical solution of the present application, the inner wall of the handle is movably connected to a collecting cylinder, and the end of the collecting cylinder away from the side rod is fixedly connected to a dustproof net.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the scheme of this application:

[0022] 1. In order to solve the problem in the prior art that the particles rubbed off will form dust and float in the air, posing a potential threat to the health of construction workers, and at the same time, there is a risk of the grinding wheel breaking due to fatigue during long-term rotation, but the existing structure of the angle grinder often lacks sufficient protective structure, the space between the two adjacent elastic plates is compressed after continuous collision with the arc protrusion, and the pressure becomes large, so that the stored dust particles are ejected, and after the ejection, negative pressure is formed and the auxiliary window contacts the dust particles to absorb and store them, so that the pressure can be adjusted by changing the storage space to absorb and eject the dust particles, thereby increasing the convenience of dust particle treatment during the grinding process, and while achieving heat dissipation and cooling, the dust particles generated by grinding can also be collected and processed, so that it can be flexibly switched between the heat dissipation structure and the dust collection structure;

[0023] 2. When the elastically supported inclined plate loses its limit on the broken grinding wheel, it pulls the limit of the outer guard plate. The outer guard plate then moves under the extension of the arc-shaped elastic telescopic rod and cooperates with the arc-shaped shell to quickly form a circular protective structure, thereby protecting the broken grinding wheel during the rotation process and preventing it from splashing and causing danger;

[0024] 3. During the dust collection process, the inclined plate guides the dust particles generated by grinding into the protective tube for processing. During the protection process, the inclined plate makes elastic contact with the grinding wheel. When the grinding wheel is broken, the inclined plate flips to release the limit of the outer guard plate and perform the protection operation, thereby allowing it to flexibly switch between the guiding structure and the limiting protection structure;

[0025] 4. The hollow structure of the handle guides the ejected dust particles into contact with the dust-proof net in the collection tube for filtration and collection, thereby collecting and storing the ejected dust particles to prevent them from floating in the air and affecting the health of construction workers.

[0026] 5. During use, the handle is held by the staff's hand, and the whole structure is controlled by hand. During the dust collection process, the hollow structure inside the handle can guide the sprayed dust, so that it can be flexibly switched between the handheld structure and the guiding structure to improve the convenience of the polishing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The overall structure of the angle grinder with dust removal function provided in this application is shown as follows: Figure 1 ;

[0028] Figure 2 A partial cross-sectional schematic diagram of the angle grinder with dust removal function provided in this application;

[0029] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0030] Figure 4 Schematic diagram of the partial structure of the dust removal component in the angle grinder with dust removal function provided in this application Figure 1 ;

[0031] Figure 5 Schematic diagram of the partial structure of the dust removal component in the angle grinder with dust removal function provided in this application Figure 2 ;

[0032] Figure 6 Schematic diagram of the partial structure of the angle grinder with dust removal function provided in this application Figure 1 ;

[0033] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at B in the middle;

[0034] Figure 8 for Figure 6 A half-section schematic diagram in FIG.

[0035] Figure 9 Schematic diagram of the partial structure of the angle grinder with dust removal function provided in this application Figure 2 ;

[0036] Figure 10 for Figure 9 Enlarged schematic diagram of point C in the middle.

[0037] Indicated in the figure:

[0038] 1. Housing; 2. Protective tube; 3. Dust removal assembly; 301. Partition; 302. Impeller blade; 303. Elastic paddle; 304. Baffle; 305. Circular plate; 306. Tooth plate; 307. Guide window; 308. Inclined plate; 309. Arc shell; 310. Auxiliary window; 311. Splicing frame; 312. Arc bump; 4. Positioning bolt; 5. Positioning shell; 6. Protective assembly; 601. Connecting rod; 602. Limit rod; 603. Guide plate; 604. Side panel; 605, arc-shaped elastic telescopic rod; 606, auxiliary plate; 607, elastic hinge; 608, elastic guard plate; 609, outer guard plate; 610, limit groove; 7, collection assembly; 701, handle; 702, side rod; 703, chamfered groove; 704, collection barrel; 705, dust net; 8, motor; 9, fixing frame; 10, gear ring; 11, bevel gear; 12, side frame plate; 13, limit nut; 14, limit ring plate; 15, grinding wheel. DETAILED DESCRIPTION

[0039] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 should fall within the scope of protection of the present invention.

[0040] As described in the background art, the particles that are rubbed off will form dust and float in the air, posing a potential threat to the health of construction workers. At the same time, the grinding wheel is at risk of breaking due to fatigue during long-term rotation, but the existing structure of the angle grinder often lacks sufficient protective structure.

[0041] In order to solve this technical problem, the present invention provides an angle grinder with a dust removal function, which is applied to the field of grinding technology.

[0042] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0043] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein may be combined with each other.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0045] Example 1, please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 As shown, an angle grinder with a dust removal function includes a housing 1, a protective cylinder 2 is fixedly connected to the front end of the housing 1, a side frame plate 12 is fixedly connected to the inner wall of the protective cylinder 2, a fixing frame 9 is fixedly connected below the side frame plate 12, a limiting ring plate 14 is fixedly connected to the inner wall of the protective cylinder 2, a positioning shell 5 is provided on the outer wall of the limiting ring plate 14, and the positioning shell 5 is fixedly installed on the front end of the protective cylinder 2, a dust removal component 3 is provided on the inner wall of the protective cylinder 2, and a collecting component 7 is provided on the side of the protective cylinder 2;

[0046] The dust removal component 3 includes a partition 301 movably mounted on the front surface of the limiting ring plate 14, and a plurality of impeller blades 302 are fixedly connected to the rear surface of the partition 301 in a circumferentially uniformly distributed manner, and a plurality of elastic paddles 303 are fixedly connected to the front surface of the partition 301 in a circumferentially uniformly distributed manner, and a baffle 304 is fixedly connected between the plurality of elastic paddles 303. A circular plate 305 is fixedly connected to the middle of the side frame plate 12, and a plurality of tooth plates 306 are fixedly connected to the outer wall of the circular plate 305 in a circumferentially uniformly distributed manner. An arc protrusion 312 is provided at the lower side of the inner wall of the protective cylinder 2. The motor 8 drives the partition 301 to rotate, and at the same time, drives the plurality of impeller blades 302 on one side of the partition 301 to rotate, generating airflow to cool down the working motor 8, and the elastic paddle 303 on the other side of the partition 301 rotates in the protective cylinder 2. The arc bulge 312 installed on the inner wall of the casing 2 causes the space between the two adjacent elastic paddles 303 to be continuously compressed during the contact process with the arc bulge 312. When encountering the side window, the restriction is lost and the collected particles are discharged. After the gas is discharged, a negative pressure state is generated between the two adjacent elastic paddles 303, which continue to rotate rapidly and move to the auxiliary window 310 for absorption. Due to the high-speed rotating grinding wheel 15, the particles ground off move upward along the inclined plate 308 through the guide window 307 and enter the auxiliary window 310, and are attracted between the two adjacent elastic paddles 303. In the process of continuous rotation of the partition 301, the elastic paddles 303 close to the tooth plate 306 continuously collide with each other, causing the elastic paddles 303 to vibrate continuously, and shake the dust particles attached to the surface of the elastic paddles 303 to prevent them from adhering and accumulating.

[0047] After the two adjacent elastic plates continuously collide with the arc-shaped protrusion 312, the space between them is compressed, and the pressure becomes greater, so the stored dust particles are ejected. After being ejected, negative pressure is formed, and after contacting the auxiliary window 310, the dust particles are absorbed and stored. In this way, the pressure can be adjusted by changing the storage space to absorb and eject the dust particles, thereby increasing the convenience of handling dust particles during the polishing process.

[0048] Further, such as Figure 2 、 Figure 6 and Figure 7 As shown, an arc-shaped shell 309 is fixedly connected to the bottom of the positioning shell 5, a guide window 307 is provided on the upper surface of the arc-shaped shell 309, a splicing frame 311 is provided on the inner wall of the guide window 307, an inclined plate 308 is provided on one side of the inner wall of the splicing frame 311, an auxiliary window 310 is provided below the protective tube 2, and is directly above the splicing frame 311, and a protective component 6 is provided on the outer wall of the arc-shaped shell 309, which guides the dust particles generated by grinding through the guide window 307 and the splicing frame 311, thereby increasing the convenience of dust particle processing.

[0049] Further, such as Figure 5 As shown, a motor 8 is provided in the middle of the rear end surface of the partition 301 , and the outer wall of the motor 8 is fixedly mounted on the inner wall of the housing 1 , and the motor 8 provides power for the rotation of the partition 301 .

[0050] Further, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 5 As shown, the output shaft end of the motor 8 passes through the partition 301 and is fixedly connected to the bevel gear 11, and a gear ring 10 is meshed and connected below the bevel gear 11. A positioning bolt 4 is provided in the middle of the gear ring 10, and a limiting nut 13 is provided on the outer wall of the positioning bolt 4. A grinding wheel 15 is provided on the outer wall of the limiting nut 13. The bevel gear 11 is driven to rotate by the motor 8, and then the gear ring 10 meshed with it follows the rotation and performs vertical transmission, which drives the grinding wheel 15 connected to the positioning bolt 4 to rotate to grind the object.

[0051] Example 2, the angle grinder with dust removal function provided in Example 1 is further optimized, specifically, as Figure 3 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 10As shown, the protection component 6 includes a connecting rod 601 movably mounted on one side of the inclined plate 308, and a limiting rod 602 is movably mounted on the other end of the connecting rod 601. The outer wall of the arc shell 309 is movably connected to the outer guard plate 609, and a limiting groove 610 is provided on one side of the upper surface of the outer guard plate 609. The outer wall of the limiting rod 602 is movably connected to the guide plate 603 and is fixedly mounted on the upper surface of the arc shell 309. An elastic hinge 607 is provided on one side of the guide window 307, and the other side of the elastic hinge 607 is movably mounted on the side surface of the inclined plate 308. The elastic guard plate 608 connected to the inclined plate 308 and the elastic guard plate 608 in rotation The outer protective plate 609 is disengaged from the limiting groove 610 and the arc-shaped elastic telescopic rod 605 is extended and moves on the outer wall of the protective shell to form a circular protective structure to prevent the fragments of the grinding wheel 15 from splashing around and causing danger.

[0052] After the elastically supported inclined plate 308 loses its limit on the broken grinding wheel 15, it pulls the limit on the outer guard plate 609, and the outer guard plate 609 moves under the extension of the arc-shaped elastic telescopic rod 605, and cooperates with the arc-shaped shell 309 to quickly form a circular protective structure, thereby protecting the broken grinding wheel 15 during the rotation process and preventing it from splashing and causing danger.

[0053] Further, such as Figure 8 and Figure 10 As shown, the lower end of the inclined plate 308 is fixedly connected to an elastic guard plate 608, and the lower end of the elastic guard plate 608 is movably connected to the upper surface of the grinding wheel disc 15. The elastic guard plate 608 is used to bring the inclined plate 308 into contact with the grinding wheel disc 15 without hindering the normal rotation of the grinding wheel disc 15.

[0054] Further, such as Figure 6 and Figure 9 As shown, one end of the arc-shaped shell 309 is fixedly connected to an auxiliary plate 606 , and the side of the auxiliary plate 606 is fixedly connected to an arc-shaped elastic telescopic rod 605 , which provides power for the rotation of the outer protective plate 609 .

[0055] Further, such as Figure 6 As shown, the other end of the arc-shaped elastic telescopic rod 605 is fixedly connected to the side plate 604, and the side plate 604 is fixedly installed on the outer wall of the outer guard plate 609. The outer guard plate 609 is movably connected to the arc-shaped shell 309, and the outer guard plate 609 is connected to the arc-shaped elastic telescopic rod 605 through the side plate 604.

[0056] Example 3, further optimizes the angle grinder with dust removal function provided in Examples 1 and 2, specifically, Figure 8 、 Figure 9 and Figure 10 As shown, the collecting assembly 7 includes a side rod 702 fixedly mounted in the middle of the side wall of the protective tube 2, a chamfered groove 703 is provided on the inner wall of the side rod 702, and a handle 701 is movably connected to the outer wall of the side rod 702. The ejected air flow carries dust particles and is ejected from the chamfered groove 703 in the side rod 702, enters the handle 701, and is introduced into the collecting tube 704. The gas passes through the dustproof net 705 at one end of the collecting tube 704, and the dust particles remain in the collecting tube 704 for collection.

[0057] The ejected dust particles are guided by the hollow structure of the handle 701 and contacted with the dustproof net 705 in the collection tube 704 for filtration and collection, thereby collecting and storing the ejected dust particles to prevent them from floating in the air and affecting the health of construction workers.

[0058] Further, such as Figure 9 As shown, a collecting cylinder 704 is movably connected to the inner wall of the handle 701 , and a dustproof net 705 is fixedly connected to one end of the collecting cylinder 704 away from the side rod 702 , so as to collect dust particles through the dustproof net 705 .

[0059] The use process of the angle grinder with dust removal function provided by the present invention is as follows:

[0060] Working principle: The staff holds the handle 701 and starts the motor 8 to drive the bevel gear 11 to rotate. Then the gear ring 10 meshing with it rotates with it, performing vertical transmission, which drives the grinding wheel 15 connected to the positioning bolt 4 to rotate and grind the object;

[0061] Heat dissipation: The motor 8 drives the partition 301 to rotate. While grinding, it drives the impeller blades 302 on one side of the partition 301 to rotate. Air is sucked in through the holes in the shell 1 and then discharged through the holes on the other side of the shell 1 to generate a flowing airflow passing through the motor 8, thereby cooling the working motor 8.

[0062] Dust suction: The elastic paddle 303 on the other side of the partition 301 rotates in the protective tube 2. Due to the arc protrusion 312 installed on the inner wall of the protective tube 2, the space between the two adjacent elastic paddles 303 is continuously compressed during the contact process with the arc protrusion 312. When they encounter the chamfered groove 703 in the side rod 702, the restriction is lost and the collected particles are discharged. After the gas is discharged, a negative pressure state is generated between the two adjacent elastic paddles 303. They continue to rotate rapidly and move to the auxiliary window 310 for suction. Due to the high-speed rotation of the grinding wheel 15, the particles ground off move upward along the inclined plate 308 through the guide window 307 and enter the auxiliary window 310. They are attracted between the two adjacent elastic paddles 303. In the process of continuous rotation of the partition 301, the elastic paddles 303 near the tooth plate 306 continuously collide with each other, causing the elastic paddles 303 to vibrate continuously, thereby shaking off the dust particles attached to the surface of the elastic paddles 303 to prevent them from adhering and accumulating.

[0063] Protection: The elastic guard plate 608 connected to the inclined plate 308 contacts the rotating elastic guard plate 608, guiding the dust particles it grinds to move upward. When the grinding wheel 15 breaks during the grinding process, the inclined plate 308 loses its limit. With the cooperation of the elastic hinge 607, the inclined plate 308 is driven to flip. With the cooperation of the connecting rod 601, the limit rod 602 is pulled along the guide plate 603 to move out of the limit groove 610 of the outer guard plate 609, causing the outer guard plate 609 to lose its limit. The arc-shaped elastic telescopic rod 605 extends and moves on the outer wall of the protective shell to form a circular protective structure to prevent the fragments of the grinding wheel 15 from splashing around and causing danger.

[0064] Collection: The ejected air flow carries dust particles and is ejected from the chamfered groove 703 in the side rod 702, enters the handle 701, and is introduced into the collection tube 704. The gas passes through the dustproof net 705 at one end of the collection tube 704, and the dust particles are left in the collection tube 704 for collection.

[0065] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0066] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present invention specification and drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. An angle grinder with dust removal function, characterized in that: The invention comprises a shell (1), wherein the front end of the shell (1) is fixedly connected to a protective tube (2), the inner wall of the protective tube (2) is fixedly connected to a side frame plate (12), a fixing frame (9) is fixedly connected below the side frame plate (12), the inner wall of the protective tube (2) is fixedly connected to a limiting ring plate (14), the outer wall of the limiting ring plate (14) is provided with a positioning shell (5), and the positioning shell (5) is fixedly installed at the front end of the protective tube (2), the inner wall of the protective tube (2) is provided with a dust removal component (3), and the side of the protective tube (2) is provided with a collecting component (7); The dust removal assembly (3) comprises a partition (301) movably mounted on the front surface of the limiting ring plate (14); a plurality of impeller blades (302) are fixedly connected to the rear surface of the partition (301) in a circumferentially uniformly distributed manner; a plurality of elastic paddles (303) are fixedly connected to the front surface of the partition (301) in a circumferentially uniformly distributed manner; baffles (304) are fixedly connected between the plurality of elastic paddles (303); a circular plate (305) is fixedly connected to the middle portion of the side frame plate (12); a plurality of tooth plates (306) are fixedly connected to the outer wall of the circular plate (305) in a circumferentially uniformly distributed manner; and an arc convex block (312) is provided at the lower side of the inner wall of the protective tube (2); An arc-shaped shell (309) is fixedly connected below the positioning shell (5), a guide window (307) is provided on the upper surface of the arc-shaped shell (309), a splicing frame (311) is provided on the inner wall of the guide window (307), an inclined plate (308) is provided on one side of the inner wall of the splicing frame (311), an auxiliary window (310) is provided below the protective tube (2) and is located directly above the splicing frame (311), and a protective component (6) is provided on the outer wall of the arc-shaped shell (309); A motor (8) is provided in the middle of the rear end surface of the partition (301), and the outer wall of the motor (8) is fixedly mounted on the inner wall of the housing (1); The output shaft end of the motor (8) passes through the partition (301) and is fixedly connected to a bevel gear (11), and a gear ring (10) is meshedly connected below the bevel gear (11). A positioning bolt (4) is provided in the middle of the gear ring (10), and a limiting nut (13) is provided on the outer wall of the positioning bolt (4), and a grinding wheel (15) is provided on the outer wall of the limiting nut (13); The protection assembly (6) includes a connecting rod (601) movably mounted on one side of the inclined plate (308), a limiting rod (602) movably mounted on the other end of the connecting rod (601), an outer protective plate (609) movably connected to the outer wall of the arc shell (309), a limiting groove (610) provided on one side of the upper surface of the outer protective plate (609), a guide plate (603) movably connected to the outer wall of the limiting rod (602), and fixedly mounted on the upper surface of the arc shell (309), an elastic hinge (607) provided on one side of the guide window (307), and the other side of the elastic hinge (607) movably mounted on the side surface of the inclined plate (308).

2. The angle grinder with dust removal function according to claim 1, characterized in that: The lower end of the inclined plate (308) is fixedly connected to an elastic guard plate (608), and the lower end of the elastic guard plate (608) is movably connected to the upper surface of the grinding wheel (15).

3. The angle grinder with dust removal function according to claim 1, characterized in that: One end of the arc-shaped shell (309) is fixedly connected to an auxiliary plate (606), and a side surface of the auxiliary plate (606) is fixedly connected to an arc-shaped elastic telescopic rod (605).

4. The angle grinder with dust removal function according to claim 3, characterized in that: The other end of the arc-shaped elastic telescopic rod (605) is fixedly connected to a side plate (604), and the side plate (604) is fixedly mounted on the outer wall of the outer guard plate (609), and the outer guard plate (609) is movably connected to the arc-shaped shell (309).

5. The angle grinder with dust removal function according to claim 1, characterized in that: The collecting assembly (7) comprises a side rod (702) fixedly mounted in the middle of the side wall of the protective tube (2), a chamfered groove (703) being provided on the inner wall of the side rod (702), and a handle (701) being movably connected to the outer wall of the side rod (702).

6. The angle grinder with dust removal function according to claim 5, characterized in that: The inner wall of the handle (701) is movably connected to a collecting cylinder (704), and one end of the collecting cylinder (704) away from the side rod (702) is fixedly connected to a dustproof net (705).

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