A dust collection and chip collection structure and an angle grinder

Abstract

This utility model relates to the field of angle grinder technology and discloses a dust collection structure and an angle grinder, comprising: a housing, an impeller rotatably mounted inside the housing, a first exhaust duct fixedly installed on the side wall of the housing, a connecting pipe fixedly connected to the first exhaust duct, an external box fixedly mounted at the end of the connecting pipe, and the connecting pipe communicating with the external box; a dust collection structure, comprising a top cover, a storage box, a sleeve, and an extension pipe. The rotation of the impeller causes the air inside the housing to generate a centrifugal field. The air is drawn in from the center of the housing and then, after centrifugal acceleration, is thrown out from a window near the inner wall. The air and dust can be sent into the external box through the first exhaust duct and the connecting pipe. By setting the dust collection structure in the external box, the air and dust are separated and filtered, achieving the purpose of collecting the dust generated during the cutting and grinding process. In this solution, the impeller is directly connected to the output shaft, which has high durability, good stability, and a compact overall structure.

Description

Technical Field

[0001] This utility model relates to the field of angle grinder technology, and in particular to a dust collection and chip collection structure and an angle grinder. Background Technology

[0002] Angle grinders are one of the most commonly used power tools in decoration construction.

[0003] According to the prior art, a self-cleaning angle grinder (announcement number: CN114683146B) is disclosed. Its dust-collecting part is rotatable relative to the grinding disc. The dust-collecting power comes from the output power during its own grinding. It includes a machine body, a head mounted on the machine body, a grinding disc mounted on the output shaft of the head, a rotatable protective cover mechanism sleeved on the output shaft, and a dust-collecting mechanism in the protective cover mechanism.

[0004] Existing technology uses the output shaft of the angle grinder itself as power, and transmits the power through gears and other transmission components to power the rotation of the blades. First, adding gears and other structures affects the stability of the angle grinder's operation. Second, the exposed gears, gear rings and other components pose significant safety hazards. Adding more components to the already compact dust cover of the angle grinder affects the grip.

[0005] Therefore, we propose a dust collection and chip collection structure and an angle grinder. Utility Model Content

[0006] The present invention mainly addresses the technical problems mentioned above that affect safety and the stability of angle grinder operation caused by the use of gear transmission, and provides a dust collection and chip collection structure and an angle grinder.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a dust collection and debris gathering structure, comprising: The housing has an impeller rotatably mounted inside it, and a first exhaust duct is fixedly installed on the side wall of the housing. The first exhaust duct is fixedly connected to a connecting pipe, and an external box is fixedly installed at the end of the connecting pipe. The connecting pipe is connected to the external box. A dust collection structure is installed inside an external box for collecting dust. The dust collection structure includes a top cover, a storage box, a sleeve, and an extension tube. The extension tube is fixedly connected to and communicates with the connecting tube. The storage box is placed inside the connecting tube, and the sleeve is fixedly connected to the storage box. The extension tube is inserted into the sleeve. The top cover is detachably installed on the top of the storage box.

[0008] The housing is an inverted cylinder with an opening at the bottom. The impeller includes an annular plate with several blades fixedly installed on the lower end face of the annular plate. The side wall of the housing has a window for exhaust, and the first exhaust pipe is fixedly installed inside the window.

[0009] The external box is a rectangular box with an open top, and the storage box is a rectangular box with a smaller size than the external box slot.

[0010] The outer diameter of the extension tube is equal to the inner diameter of the sleeve, and a sealing ring is provided inside the sleeve.

[0011] The dust collection structure also includes several anti-detachment rods. Several anti-detachment rods are fixedly installed at the lower end of the upper cover. The anti-detachment rods can abut against the inner wall of the storage box. Filter holes are evenly opened on the top of the upper cover.

[0012] The dust collection structure also includes pressure rods. Two pressure rods are rotatably installed on the inner wall of the outer box. The two pressure rods can be flipped up to the top cover and apply downward pressure to the top cover.

[0013] An angle grinder includes an angle grinder body, the angle grinder body having an output shaft and a dust cover, the angle grinder body having all the aforementioned dust collection and chip collection structures, the external box being fixedly installed outside the housing, the impeller being fixedly connected to the output shaft of the angle grinder body, the housing being fixedly installed to the dust cover, the dust cover having a plurality of air intake holes, the air intake holes being interconnected with the housing.

[0014] This utility model provides a dust collection and chip gathering structure and an angle grinder. It has the following beneficial effects: 1. This dust collection and chip removal structure and angle grinder utilizes an impeller rotation to generate a centrifugal field within the housing. Air is drawn in from the center of the housing, accelerated by centrifugal force, and then ejected from a window near the inner wall. Air and dust are fed into an external chamber via a first-row duct and connecting pipe. A dust collection structure within the external chamber separates and filters the air and dust, achieving the goal of collecting dust generated during the cutting and grinding process. Compared to existing technologies that use additional power or other gear transmission methods, this solution directly connects the impeller to the output shaft, reducing power loss and minimizing maintenance difficulties caused by complex transmission components. It also boasts high durability, good stability, and a compact overall structure.

[0015] 2. This dust collection and chip removal structure and angle grinder delivers air into the storage box through an extension tube and a sleeve. The air is filtered through the filter holes on the top of the cover, and dust is collected in the storage box while the air is discharged, thus purifying the air. The removable storage box and top cover facilitate the removal of the storage box for chip removal. The removable top cover also facilitates the cleaning and maintenance of the filter holes on the top cover. The inner wall of the storage box is provided with a protrusion, and the top cover is placed on the protrusion with a silicone pad.

[0016] 3. This dust collection and chip collection structure and angle grinder, by setting up spring steel pressure rods, the two pressure rods rotate in opposite directions, and by rotating the pressure rods to the top cover, the pressure rods apply downward pressure to the top cover, preventing the top cover from falling off and ensuring the sealing between the top cover and the boss. Attached Figure Description

[0017] Figure 1 This is one of the three-dimensional views of the dust collection and chip collection structure of this utility model; Figure 2 This is the second perspective view of the dust collection and chip gathering structure of this utility model; Figure 3 This is an exploded view of the dust collection structure of this utility model; Figure 4 This is one of the overall perspective views of this utility model; Figure 5 This is the second overall perspective view of this utility model.

[0018] Legend: 10. Shell; 11. Impeller; 12. First exhaust duct; 13. Connecting pipe; 14. External box; 20. Top cover; 21. Storage box; 22. Sleeve; 23. Extension pipe; 24. Pressure rod; 25. Anti-detachment rod; 30. Angle grinder body; 31. Suction port. Detailed Implementation

[0019] A dust collection and chip collection structure and an angle grinder, such as Figure 1 As shown, it includes: The housing 10 has an impeller 11 rotatably mounted inside it. A first exhaust duct 12 is fixedly installed on the side wall of the housing 10. The first exhaust duct 12 is fixedly connected to a connecting pipe 13. An external box 14 is fixedly installed at the end of the connecting pipe 13. The connecting pipe 13 is connected to the external box 14. The housing 10 is an inverted cylinder with an opening at the bottom. The impeller 11 includes an annular plate. Several blades are fixedly installed on the lower end face of the annular plate. A window for exhaust is opened on the side wall of the housing 10. The first exhaust duct 12 is fixedly installed in the window. In this design, the impeller 11 rotates to generate a centrifugal field in the air inside the housing 10. The air is drawn in from the center of the housing 10, accelerated by centrifugation, and then thrown out through the window near the inner wall. The air and dust can be sent into the outer box 14 through the first exhaust duct 12 and the connecting pipe 13. The dust collection structure inside the outer box 14 separates and filters the air and dust, thus collecting the dust generated during the angle grinder cutting process. Compared with the existing technology that uses additional power or other gear transmission methods, in this design, the impeller 11 is directly connected to the output shaft, which can reduce power loss and reduce the difficulty of later maintenance caused by complex transmission components. At the same time, it has high durability, good stability, and a compact overall structure, without affecting the basic functions of the angle grinder body 30.

[0020] like Figure 2 and Figure 3As shown, a dust collection structure is installed inside an external box 14 for collecting dust. The dust collection structure includes a top cover 20, a storage box 21, a sleeve 22, and an extension tube 23. The extension tube 23 is fixedly connected to and communicates with the connecting tube 13. The storage box 21 is placed inside the connecting tube 13. The sleeve 22 is fixedly connected to the storage box 21. The extension tube 23 is inserted into the sleeve 22. The top cover 20 is detachably installed on the top of the storage box 21. The external box 14 is a rectangular box with an open top. The storage box 21 is a rectangular box. The size of the storage box 21 is smaller than the size of the groove in the external box 14. The outer diameter of the extension tube 23 is equal to the inner diameter of the sleeve 22. A sealing ring is provided inside the sleeve 22. In this solution, as an extension of the above solution, after the pipe 13 sends dust and air into the external box 14, the air is sent into the storage box 21 through the extension pipe 23 and the sleeve 22. The air is filtered through the filter hole on the top of the cover 20. The dust is collected in the storage box 21 and the air is discharged, thus purifying the air. The removable storage box 21 and the cover 20 make it easy to remove the storage box 21 for slag removal. The removable cover 20 makes it easy to clean and maintain the filter hole of the cover 20. The inner wall of the storage box 21 is provided with a protrusion, and the cover 20 is placed on the protrusion. A silicone pad is provided on the protrusion.

[0021] like Figure 3 As shown, the dust collection structure also includes several anti-detachment rods 25. Several anti-detachment rods 25 are fixedly installed at the lower end of the upper cover 20. The anti-detachment rods 25 can abut against the inner wall of the storage box 21. The top of the upper cover 20 is evenly provided with filter holes. By setting the anti-detachment rods 25, the deformation of the spring steel anti-detachment rods 25 abuts against the inner wall of the storage box 21, thereby limiting and installing the upper cover 20, which has the characteristic of convenient disassembly and assembly of the upper cover 20.

[0022] like Figure 3 As shown, the vacuuming structure also includes pressure rods 24. Two pressure rods 24 are rotatably mounted on the inner wall of the outer box 14. The two pressure rods 24 can be flipped up to the top cover 20 and apply downward pressure to the top cover 20. By setting the pressure rods 24 made of spring steel, the two pressure rods 24 are flipped in opposite directions. By rotating the pressure rods 24 up to the top cover 20, the pressure rods 24 apply downward pressure to the top cover 20, preventing the top cover 20 from falling off and ensuring the seal between it and the boss.

[0023] like Figure 4 and Figure 5As shown, an angle grinder includes an angle grinder body 30, which has an output shaft and a dust cover. The angle grinder body 30 is equipped with all the aforementioned dust collection and chip collection structures. An external box 14 is fixedly installed outside the housing 10. An impeller 11 is fixedly connected to the output shaft of the angle grinder body 30. The housing 10 is fixedly installed with the dust cover, which has several suction holes 31 that are interconnected with the housing 10. In this design, the output shaft has a tenon groove, and the impeller 11 can be inserted into the tenon groove of the output shaft and locked with bolts. By setting the above structure, dust can be absorbed and collected during operation, reducing the emission of dust during work. This design is suitable for use in decoration engineering construction where angle grinding of building materials produces a lot of debris and dust.

[0024] The working principle of this utility model is as follows: The angle grinder body 30 is connected to a power source. The motor of the angle grinder body 30 drives the output shaft to rotate. The output shaft drives the impeller 11 to rotate in a circular motion. The rotation of the impeller 11 causes the air inside the housing 10 to generate a centrifugal field. The air is drawn in from the center of the housing 10 and then, after centrifugal acceleration, is thrown out from the window near the inner wall. The air and dust can be sent into the outer box 14 through the first air duct 12 and the connecting pipe 13. After the connecting pipe 13 sends the dust and air into the outer box 14, the air is sent into the storage box 21 through the extension pipe 23 and the sleeve 22. The air is filtered through the filter hole on the top of the cover 20. The dust is collected in the storage box 21 and the air is discharged, thus purifying the air.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust and debris collection arrangement, characterized by, include: The housing (10) has an impeller (11) rotatably mounted inside it. A first exhaust pipe (12) is fixedly installed on the side wall of the housing (10). A connecting pipe (13) is fixedly connected to the first exhaust pipe (12). An external box (14) is fixedly provided at the end of the connecting pipe (13). The connecting pipe (13) is connected to the external box (14). A dust collection structure is installed inside an external box (14) for collecting dust. The dust collection structure includes a top cover (20), a storage box (21), a sleeve (22), and an extension tube (23). The extension tube (23) is fixedly connected to the connecting tube (13) and communicates with the connecting tube (13). The storage box (21) is placed inside the connecting tube (13). The sleeve (22) is fixedly connected to the storage box (21). The extension tube (23) is inserted into the sleeve (22). The top cover (20) is detachably installed on the top of the storage box (21).

2. The dust and debris collection arrangement of claim 1, wherein: The housing (10) is an inverted cylinder with an opening at the bottom. The impeller (11) includes an annular plate with several blades fixedly installed on the lower end face of the annular plate. The side wall of the housing (10) is provided with a window for exhaust. The first exhaust pipe (12) is fixedly installed inside the window.

3. The dust and debris collection arrangement of claim 1, wherein: The external box (14) is a rectangular box with an opening at the top, and the storage box (21) is a rectangular box. The size of the storage box (21) is smaller than the size of the slot of the external box (14).

4. The dust and debris collection arrangement of claim 1, wherein: The outer diameter of the extension tube (23) is equal to the inner diameter of the sleeve (22), and the sleeve (22) is provided with a sealing ring inside.

5. The dust and debris collection arrangement of claim 1, wherein: The dust collection structure also includes several anti-detachment rods (25). Several anti-detachment rods (25) are fixedly installed at the lower end of the upper cover (20). The anti-detachment rods (25) can abut against the inner wall of the storage box (21). Filter holes are evenly opened on the top of the upper cover (20).

6. The dust and debris collection arrangement of claim 1, wherein: The dust collection structure also includes pressure rods (24). Two pressure rods (24) are rotatably installed on the inner wall of the outer box (14). The two pressure rods (24) can be flipped over to the top cover (20) and apply downward pressure to the top cover (20).

7. An angle grinder, comprising an angle grinder body (30), the angle grinder body (30) having an output shaft and a dust cover, characterized in that: The angle grinder body (30) is provided with a dust collection structure as described in any one of claims 1-6. The external box (14) is fixedly installed outside the housing (10). The impeller (11) is fixedly connected to the output shaft of the angle grinder body (30). The housing (10) is fixedly installed with a dust cover. The dust cover has a plurality of suction holes (31) and the suction holes (31) are interconnected with the housing (10).

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