CN113927427B

CN113927427B - Cyclone dust collecting device and polishing device

Info

Publication number: CN113927427B
Application number: CN202010610476.2A
Authority: CN
Inventors: 刘天亮; 付祥青; 陈亮
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2023-05-26
Anticipated expiration: 2040-06-29
Also published as: CN113927427A

Abstract

The invention discloses a cyclone dust collecting device and a polishing device, which belong to the technical field of electric tools, wherein the cyclone dust collecting device comprises a dust collecting box and a separator, the dust collecting box comprises a dust inlet and a cavity formed by extending along a first direction, the dust inlet is communicated with a dust discharging channel of a host machine, and dust discharging air flows through the dust inlet and enters the cavity; the separator comprises a dust inlet and a cyclone, the dust inlet is communicated with the dust inlet, the cyclone is arranged in the dust collecting box in an extending mode along the second direction, the cyclone comprises an inlet and an outlet which are arranged on the cyclone, the inlet is positioned in the cavity, and the outlet is communicated with the outside of the dust collecting box; the second direction and the first direction form an included angle, so that the inlet is higher than the dust inlet, the outlet is lower than the dust inlet, and the axial size of the dust collecting box is reduced, so that the dust collecting box is more compact; the outlet is disposed away from the host. The grinding device comprises a cyclone dust collecting device as described above.

Description

Cyclone dust collecting device and polishing device

Technical Field

The invention relates to the technical field of electric tools, in particular to a cyclone dust collecting device and a polishing device.

Background

During the processing of a workpiece using a power tool (e.g., a grinding device), dust is generated, which not only contaminates the air but also exposes the operator to the dust environment, and therefore dust collection devices are often provided on power tools.

Therefore, a dust collecting device is generally provided in the electric power tool. The dust collecting device is generally provided with a separating component, dust is separated by the separating component and then remains in the dust collecting device, and the dust exhaust airflow is discharged out of the dust collecting device, so that when the dust is accumulated at an outlet of the separating component, the dust can be scattered out of a dust box of the dust collecting device along with the dust exhaust airflow, and at the moment, the dust box can not store the dust effectively any more, and dust in the dust box can be ensured to be collected continuously after the dust is poured. However, the separation parts of the dust collecting device in the prior art are generally arranged along the axial direction of the dust inlet, so that the space in the dust collecting device is not effectively utilized, the frequency of dust dumping by a user is increased, and the use feeling of the user is not improved.

Disclosure of Invention

The invention aims to provide a cyclone dust collecting device and a polishing device, which are used for solving the technical problems of small dust collecting capacity and low dust collecting efficiency of the dust collecting device in the prior art.

The technical scheme adopted by the invention is as follows:

a cyclone dust collecting apparatus comprising:

the dust collecting box comprises a dust inlet and a cavity formed by extending along a first direction, wherein the dust inlet is communicated with a dust discharging channel of the host machine, and dust discharging air flows through the dust inlet and enters the cavity;

the separator comprises a dust inlet and a cyclone cylinder, the dust inlet is communicated with the dust inlet, the cyclone cylinder is arranged in the dust collecting box in an extending mode along the second direction, the cyclone cylinder comprises an inlet and an outlet which are arranged on the cyclone cylinder, the inlet is positioned in the cavity, and the outlet is communicated with the outside of the dust collecting box;

the second direction is arranged at an included angle with the first direction, so that the inlet is higher than the dust inlet, the outlet is lower than the dust inlet, and the outlet is away from the host.

The vertical distance between the top wall and the bottom wall of the dust collecting box is H, and the vertical distance between the center position of the inlet and the bottom wall of the dust collecting box is H, wherein H/H is more than or equal to 0.5 and less than or equal to 0.9.

The first direction and the second direction are arranged at an included angle in a vertical plane, wherein the included angle is more than or equal to 15 degrees and less than or equal to 45 degrees.

The cyclone cylinder comprises a guide piece arranged at the outlet, and the guide piece guides the air outlet direction of the outlet to deviate relative to the second direction in a direction away from the host.

The dust box further comprises an end cover and a dust barrel which are detachably connected, wherein the end cover is detachably connected with the host, the cavity is formed in the dust barrel, and the dust inlet is formed in the end cover.

The dust collecting box further comprises a dust blocking piece, and the dust blocking piece is arranged on the bottom wall of the opening of the dust barrel.

A grinding apparatus comprising:

a body including a dust exhaust passage;

the bottom plate assembly comprises a bottom plate and a polishing piece arranged on the bottom plate;

the driving mechanism and the fan assembly are arranged in the machine body, the driving mechanism drives the bottom plate assembly to move, and the fan assembly is used for forming a dust exhaust air path;

and a cyclone dust collecting apparatus including:

the dust collecting box comprises a dust inlet and a cavity formed by extending along a first direction, wherein the dust inlet is communicated with the dust discharging channel, and dust discharging air flows through the dust inlet and enters the cavity;

the second direction is arranged at an included angle with the first direction, so that the inlet is higher than the dust inlet, the outlet is lower than the dust inlet, and the outlet is arranged away from the machine body.

The cyclone cylinder comprises a guide piece arranged at the outlet, and the guide piece guides the air outlet direction of the outlet to deviate relative to the second direction in a direction away from the machine body.

The dust collecting box further comprises an end cover and a dust barrel which are detachably connected, wherein the end cover is detachably connected with the machine body, the cavity is formed in the dust barrel, and the dust inlet is formed in the end cover;

the separator also comprises a mounting seat, wherein the mounting seat is connected with the end cover, and the dust inlet is arranged on the mounting seat.

The dust collecting box further comprises a dust blocking piece, and the dust blocking piece is arranged on the bottom wall of the opening of the dust collecting box.

Wherein, the end cover with the dirt section of thick bamboo buckle is connected.

Wherein the fuselage further comprises a first joint extending to form a tubular shape;

the dust box also comprises a second connector, wherein the second connector is provided with a locking state which is matched and locked with the first connector and an opening state which is separated from the first connector.

Wherein, still include:

and an auxiliary disengaging member interposed between the first joint and the second joint and having a biasing force for biasing the second joint away from the first joint.

The invention has the beneficial effects that:

according to the cyclone dust collecting device, the second direction and the first direction are arranged at an included angle, so that the inlet is higher than the dust inlet, the outlet is lower than the dust inlet, the cyclone barrel is obliquely arranged in the dust collecting box, the axial size of the dust collecting box is reduced, and the inner structure of the dust collecting box is more compact; dust flows upwards from the dust inlet and is accumulated in the inlet entering dust collection box, the inlet of the cyclone is lifted, so that the effective dust accumulation space below the end of the cyclone is increased, the dust collection space is increased on the basis of not increasing the volume of the dust collection box, the dust collection efficiency is higher, the dust pouring frequency of a user is reduced, and meanwhile, the outlet is away from the host machine, so that dust exhaust airflow is prevented from blowing onto the host machine, and part of dust which is not effectively collected is prevented from blowing onto the host machine along with the outlet of the separator.

Drawings

FIG. 1 is a schematic diagram of a sander according to the present invention;

FIG. 2 is a partial cross-sectional view of the sander provided in FIG. 1;

FIG. 3 is an exploded view of the cyclone dust collecting apparatus of the sander provided in FIG. 1;

FIG. 4 is a schematic view of the separator provided in FIG. 3;

FIG. 5 is a bottom view of the separator of FIG. 4;

fig. 6 is a cross-sectional view of the cyclone of fig. 5;

FIG. 7 is a schematic view of the end cap of FIG. 3;

FIG. 8 is a schematic view of the dustcup of FIG. 3;

FIG. 9 is a schematic view of a sanding machine including another cyclone dust collecting apparatus provided for the present invention;

FIG. 10 is a cross-sectional view of the sander provided in FIG. 9;

fig. 11 is an enlarged view at a of fig. 10;

FIG. 12 is a cross-sectional view of a cyclone dust collecting apparatus of the sander provided in FIG. 10;

FIG. 13 is an exploded view of the sander provided in FIG. 9;

fig. 14 is an enlarged view at B of fig. 13;

fig. 15 is an exploded view of the dust box of fig. 9;

fig. 16 is an exploded view of the dust box of fig. 9 at another angle.

In the figure:

10. a body; 11. a first joint; 111. a first locking member;

20. a base plate assembly;

30. a dust collection box; 301. a dust inlet; 302. a cavity;

31. an end cap; 311. a second joint; 312. a chute; 3121. a guide groove; 3122. a locking groove; 313. a claw; 3131. a clamping groove; 314. a limit protrusion;

32. a dust barrel; 321. an elastic arm; 3211. a boss; 322. a rotary buckle; 3220. a hook portion; 3221. a biasing member; 3222. a rotating shaft;

33. a dust blocking member;

40. a separator;

41. a dust inlet;

42. a cyclone; 421. an inlet; 422. an outlet; 423. a guide member;

43. a mounting base;

50. auxiliary disengaging means.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

The embodiment of the invention provides a polishing device, taking a sander as an example. Referring to fig. 1, the main machine of the sander at least comprises a machine body 10, a base plate assembly 20, a driving mechanism and a fan assembly. Wherein, the top of the body 10 is formed with a grip portion for the user to grip, and the body 10 accommodates a driving mechanism and a fan assembly.

The base plate assembly 20 is used for fixing the polishing member and achieving polishing and burnishing functions. The base plate assembly 20 includes a base plate, one side of which, which is adjacent to the body 10, is coupled to the body 10 through a vibration bracket, and the other side of which is used for fixing sanding elements such as sandpaper.

The driving mechanism is used for driving the bottom plate assembly 20 to move and comprises a motor, and an output shaft of the motor is in transmission connection with the bottom plate assembly 20, so that the bottom plate assembly 20 is driven to move, and the functions of polishing and burnishing of the sander are realized.

The fan assembly is used for forming a dust exhaust air passage, a dust exhaust channel is arranged in the machine body 10, and the dust exhaust channel comprises a dust outlet arranged on one side of the machine body 10. Dust is generated when the polishing piece acts on the workpiece, dust discharge holes are formed in the sand paper and the bottom plate, air and dust are sucked into a dust discharge channel in the machine body 10 through the dust discharge holes, and dust-mixed dust discharge airflow flows out of the dust discharge channel.

Referring to fig. 2 and 3, the sander according to the embodiment of the present invention further includes a cyclone dust collecting device, into which the dust-discharging air flows from the dust-discharging passage on the main body 10, and which separates air from dust and collects the dust in the cyclone dust collecting device.

Referring to fig. 2 and 3, the cyclone dust collecting apparatus of the embodiment of the present invention includes a dust box 30 and a separator 40, the dust box 30 includes a dust inlet 301 and a cavity 302 formed to extend in a first direction, the dust inlet 301 communicates with a dust outlet of a dust discharge passage of a main body, and a dust discharge air flow enters the cavity 302 through the dust inlet 301.

Referring to fig. 3, 7 and 8, the dust box 30 includes a detachably coupled end cap 31 and a dust barrel 32, the end cap 31 is detachably coupled to the body 10, a cavity 302 is formed in the dust barrel 32, and a dust inlet 301 is formed in the end cap 31. By detachably arranging the end cover 31 and the dust barrel 32 of the dust box 30, the end cover is convenient to open for dumping dust. Specifically, as shown in fig. 9 and 10, the main body 10 of the main body includes a first joint 11, the first joint 11 extends to form a tubular shape, and an opening of the tubular first joint 11 is formed with a dust outlet; as shown in fig. 7, 9 and 10, the dust box 30 includes a second connector 311, and as shown in fig. 2, an open end of the second connector 311 is formed with a dust inlet 301.

The separator 40 in the embodiment of the present invention includes a mounting seat 43 and a cyclone 42, the mounting seat 43 is configured to be connected with the end cover 31, the mounting seat 43 is provided with a dust inlet 41, the dust inlet 41 is communicated with the dust inlet 301, and the cyclone 42 is extended in the dust box 30 along the second direction.

Wherein, the number of the whirlwind cylinders 42 is two, the two whirlwind cylinders 42 are arranged in parallel, and the two whirlwind cylinders 42 are connected with the mounting seat 43. The cyclone barrel 42 comprises a separating barrel arranged at the rear end (the rear end refers to the right side in fig. 3, namely, the end far away from the main machine) of the mounting seat 43, and an air outlet barrel arranged at the front end (the front end refers to the left side in fig. 3, namely, the end near the main machine) of the mounting seat 43, wherein an inlet 421 for dust exhaust air flow is arranged at the rear end of the separating barrel, the inlet 421 is positioned in the cavity 302, an outlet 422 for dust exhaust air flow to be discharged is arranged at the front end of the air outlet barrel, and the outlet 422 is used for communicating with the outside of the dust collecting box 30. The end cover 31 is provided with two through holes which are correspondingly arranged with the air outlet cylinders, and the air outlet cylinders of the cyclone cylinders 42 pass through the through holes on the end cover 31 and are communicated with the outside of the dust collection box 30.

Air with dust enters the cavity 302 from the dust inlet 301 and the dust inlet 41, the dust rotates around the periphery of the separating cylinder and is separated and collected in the dust collecting box 30, and finally the dust exhaust air enters the cyclone cylinder 42 through the inlet 421 of the cyclone cylinder 42 and is discharged out of the dust collecting box 30 through the outlet 422 of the air outlet cylinder.

Referring to fig. 2, in this embodiment, the first direction refers to the axial direction of the dust inlet 301, the second direction refers to the axial direction of the cyclone barrel 42, and an included angle is formed between the second direction and the first direction, specifically, the second direction and the first direction form an included angle in a vertical plane, which may also be understood that the second direction and the first direction form an included angle in a plane perpendicular to the bottom wall of the dust box 30. Therefore, the inlet 421 of the cyclone cylinder is higher than the dust inlet 41, and the outlet 422 of the cyclone cylinder 42 is lower than the dust inlet 41, so that the cyclone cylinder 42 is obliquely arranged in the dust box 30.

Specifically, an included angle between the first direction and the second direction in the vertical plane is greater than or equal to 15 ° and less than or equal to 45 °, in fig. 2, the first direction is denoted by O1, the second direction is denoted by O2, and α represents an included angle between the first direction and the second direction.

On the one hand, the cyclone 42 is inclined within the above angle, which is beneficial to reducing the axial dimension of the dust box 30 (i.e. the dimension of the dust box in the front-rear direction), so that the volume of the dust box 30 is smaller; on the other hand, since the inlet 421 of the cyclone 42 is elevated, the effective dust collecting space below the inlet 421 is increased, the dust collecting efficiency is higher, and the dust dumping frequency of the user is reduced. Therefore, on the basis of reducing the volume of the dust collecting box, an effective dust accumulation space is ensured, and the reduction of the dust accumulation space is avoided.

Referring to fig. 6, in the embodiment of the present invention, the outlet 422 of the cyclone 42 is disposed away from the main machine, specifically, the cyclone 42 in the embodiment of the present invention includes a guide 423 disposed at the outlet 422, and the guide 423 guides the air outlet direction of the outlet 422 to deviate from the second direction in a direction away from the main machine. The guide 423 changes the direction of the air outlet at the outlet 422 to prevent the residual dust carried in the exhaust air stream from being ejected and accumulated on the main body 10 of the main body.

Wherein the air outlet 422 is disposed away from the main machine, in particular, may be disposed toward the operation table, or may be disposed toward the rear end of the main body 10, or the outlet 422 may be disposed obliquely with respect to the floor assembly 20 such that the outlet 422 discharges an air flow rearward and downward of the main body 10.

Since the outlet 422 of the cyclone cylinder 42 is arranged away from the main machine, the dust exhaust airflow which can still carry a small amount of dust is prevented from being exhausted and blown onto the main machine body 10 of the main machine, so that dust is prevented from accumulating on the main machine body 10, and the neatness and the attractiveness of the appearance of the main machine are ensured.

Referring to FIG. 2, the vertical distance between the top wall and the bottom wall of the dust box 30 is H, the vertical distance between the center position of the inlet 421 of the cyclone 42 and the bottom wall of the dust box 30 is H, and H and H are shown in FIG. 2, wherein 0.5.ltoreq.h/H.ltoreq.0.9, and wherein in the present embodiment, H/H is 0.5, 0.6 or 0.8. Specifically, the central position of the inlet 421 refers to the position where the inlet 421 intersects with the axis of the cyclone 42, so that the inlet 421 is as close to the top of the dust box 30 as possible, and the position of the inlet 421 is higher than the middle position of the dust box 30, so that the effective dust accumulation space below the inlet 421 is increased, the dust collection efficiency is higher, and the dust pouring frequency of the user is reduced.

Referring to fig. 4 to 6, the separator 40 includes two cyclones 42, one dust inlet 41 is shared by the two cyclones 42, and an inlet 421 and an outlet 422 are provided on each cyclone 42.

Referring to fig. 8, the dust box 30 further includes a dust guard 33, and the dust guard 33 is disposed on the bottom wall of the opening of the dust container 32. The dust guard 33 prevents dust in the dust barrel 32 from falling off when the end cap 31 is separated from the dust barrel 32. The dust guard 33 may be a plastic member or a gasket, and may be integrally formed with the dust box 30, or may be separately formed and then mounted in the dust box 30, which is not limited herein.

Referring to fig. 3, in which the end cap 31 of the dust box 30 and the dust barrel 32 are detachably connected in the embodiment of the present invention, specifically, the sander further includes a mounting structure disposed between the end cap 31 and the dust barrel 32, and the dust barrel 32 is detachably connected to the end cap 31 through the mounting structure, wherein the mounting structure may be a snap connection structure.

In this embodiment, the mounting structure includes two elastic snaps, which are located on opposite sides of the dustcup 32. When the dust box is installed, the end cover 31 is inserted into the dust barrel 32 so that the elastic buckle can be locked. The elastic buckle is convenient to install and detach.

Referring to fig. 7 and 8, in particular, in this embodiment, the elastic buckle is disposed on the upper and lower sides of the dust collecting box 30, the elastic buckle includes an elastic arm 321 and a claw 313, a pair of elastic arms 321 are disposed on the upper and lower sides of the dust barrel 32, each elastic arm 321 is provided with a protruding portion 3211, a pair of claws 313 are correspondingly disposed on the upper and lower sides of the end cover 31, and each claw 313 is provided with a clamping groove 3131 that is cooperatively locked with the protruding portion 3211. When the end cap is mounted, the elastic arm 321 is compressed and deformed toward the inside of the dust box 30 as the jaw 313 is inserted while the jaw 313 is inserted, and the protrusion 3211 on the outer side of the elastic arm 321 enters the catching groove 3131 on the inner side of the jaw 313 after the jaw 313 is mounted at a predetermined position, and at this time, the elastic arm is maintained in a locked state with the jaw 313 by its own elastic biasing force, so that the jaw 313 cannot be separated from the dust barrel 32. When the end cap is opened, the free end of the elastic arm 321 is pressed, and the elastic arm is compressed toward the inside of the dust box 30, so that the protruding portion 3211 thereon is separated from the catching groove 3131 on the inside of the claw 313, and at this time, the end cap 31 is allowed to be opened and separated from the dust container 32.

Referring to fig. 9 to 14, the dust box 30 in the embodiment of the present invention is detachably coupled to the main body 10. The second connector 311 of the dust box 30 has a locking state in which it is cooperatively locked with the first connector 11 of the main body 10 and an opening state in which it is disengaged therefrom. When the second connector 311 is locked with the first connector 11 in a matching way, the dust inlet 301 is communicated with the dust outlet. For example, the first connector 11 and the second connector 311 may be locked by screw connection, or may be locked by snap-fit.

In the present embodiment, the first connector 11 and the second connector 311 are locked by a locking member. The locking piece comprises a first locking piece and a second locking piece, wherein the first locking piece is arranged on one of the connectors, and the first locking piece radially protrudes out of the connector; the second locking member is arranged on the periphery of the other connector and comprises a sliding groove suitable for the first locking member to enter and be locked.

Referring to fig. 13-14, the locking member in this embodiment includes a first locking member 111 and a second locking member, where the first locking member 111 is disposed on the first joint 11, specifically, the first locking member 111 is a protrusion radially protruding from the first joint 11; the second locking member is arranged on the second joint 311 and comprises a sliding groove 312 suitable for protruding to enter and be locked, the sliding groove 312 comprises a guide groove 3121 and a locking groove 3122, the guide groove 3121 is obliquely arranged on the periphery of the second joint 311 relative to the axis of the second joint 311, the locking groove 3122 is arranged at the tail end of the guide groove 3121 and limits the first locking member 111 to be separated from the locking groove 3122 and enter the guide groove 3121, wherein the guide groove 3121 in the embodiment is an arc-shaped groove, and the guide groove 3121 is in smooth transition connection with the locking groove 3122; thereby, the first locking member 111 can be easily slid into the locking groove 3122 during locking, which is advantageous for the convenient operation of the user and improves the operation feeling of the user. Of course, the setting positions of the first locking member and the second locking member may be interchanged.

In the present embodiment, two protrusions and sliding grooves 312 are provided, respectively, the two protrusions are symmetrically disposed about the axis of the first connector 11, and the two sliding grooves 312 are provided on opposite sides of the outer periphery of the second connector 311, respectively.

Referring to fig. 11 and 12, the sander further includes an auxiliary release member 50, wherein the auxiliary release member 50 is sandwiched between the first connector 11 and the second connector 311, and has a biasing force for applying a force to the second connector 311 to release it from the first connector 11. When the second connector 311 is in a locking state in cooperation with the first connector 11, the first connector 11 and the second connector 311 press the auxiliary disengaging member 50 to generate elastic deformation; when the second connector 311 is disengaged from the first connector 11, the auxiliary disengaging member 50 generates a pushing force on the second connector 311 to assist its disengagement, thereby achieving quick disassembly. On the other hand, the auxiliary release member 50 may also function as an auxiliary seal for the first joint 11 and the second joint 311 to ensure the relative sealability of the first joint 11 and the second joint 311.

The auxiliary releasing member 50 in the embodiment of the present invention is specifically an elastic pad, wherein the second connector 311 is sleeved on the first connector 11, so that a groove suitable for installing the elastic pad is formed on the inner wall of the second connector 311 in a ring manner, specifically, a groove for installing the elastic pad is formed at a position corresponding to the axial end of the first connector 11 on the inner side of the second connector 311. Referring to fig. 11, which shows an illustration of the auxiliary escape member 50 in a compressed state, when the dust box 30 is mounted and fixed to the body 10, the first connector 11 presses and compresses the elastic pad; referring to fig. 12, which shows the auxiliary escape member 50 in a non-compressed state, the elastic pad is restored to a free state when the dust box 30 is removed from the main body 10.

When the dust box is installed, the second joint 311 is rotated in the locking direction, the protrusion is guided to enter the guide groove 3121 of the sliding groove 312, the second joint 311 is further rotated to enable the protrusion to enter the locking groove 3122 of the sliding groove 312, and the locking groove 3122 plays a limiting role on the protrusion and prevents the protrusion from sliding out along the guide groove 3121 because the locking groove 3122 is arranged at the tail end of the guide groove 3121 and forms an included angle with the guide groove 3121, and the first joint 11 and the second joint 311 press the auxiliary disengaging part 50 to generate elastic deformation during locking.

When the dust box 30 is detached, the guide protrusions slide into the guide grooves 3121 from the locking grooves 3122, and the auxiliary disengaging member 50 is restored to be deformed to provide an elastic force for auxiliary unlocking, so that the protrusions rapidly slide out of the guide grooves 3121, thereby achieving rapid detachment. The dust box 30 is matched with the machine body 10 through the first connector 11 and the second connector 311, and can be quickly assembled and disassembled in a rotating mode, so that the dust box is convenient to install and saves time; the auxiliary release member 50 is used for providing an elastic force for the second connector 311 to release from the first connector 11 during unlocking, so that the second connector 311 and the first connector 11 can be quickly sprung apart, and the disassembly efficiency is improved.

The outer peripheral surface of the first joint 11 is provided with a groove for installing a sealing ring in a ring mode, the sealing ring is installed in the groove and is clamped between the inner wall of the second joint 311 and the outer wall of the first joint 11, and the sealing ring plays a main sealing role.

In summary, the cyclone cylinder 42 is obliquely arranged in the dust collecting box 30, so that the axial dimension of the dust collecting box 30 can be reduced, and the dimension of the dust collecting box 30 is smaller; dust flows upwards from the dust inlet 41 and enters the dust box 30 at the inlet 421 to be accumulated, and the effective dust accumulation space below the end of the cyclone 42 is increased due to the fact that the inlet 421 of the cyclone is lifted, so that the dust collection efficiency is higher on the basis that the volume of the dust box is not increased, and the dust pouring frequency of a user is reduced.

As shown in fig. 15 and 16, as an alternative embodiment, the mounting structure between the dust box 30 and the body 10 includes a rotation buckle 322 and a limit protrusion 314. Specifically, as shown in fig. 15 and 16, the limiting protrusion 314 is disposed on the end cover 31, the rotary buckle 322 is disposed on the dust barrel 32, the rotary buckle 322 is pivoted with the dust barrel 32 through the rotating shaft 3222, the rotary buckle 322 includes a hook portion 3220 and a biasing force member 3221, the biasing force member 3221 applies a biasing force to the hook portion 3220 to enable the hook portion 3220 to be in locking fit with the limiting protrusion 314, wherein the biasing force member 3221 is a spring, and the spring and the limiting protrusion 314 are disposed on two sides of the rotating shaft 3222 respectively.

During installation, one end of the rotary buckle 322 is pressed, so that the rotary buckle 322 rotates relative to the dust barrel 32, the end cover 31 is buckled at the opening of the dust barrel 32, the limiting protrusion 314 is located below the hook portion 3220 of the rotary buckle 322, the rotary buckle 322 is loosened, the hook portion 3220 is clamped with the limiting protrusion 314, and the biasing force for locking the hook portion 3220 in a matched mode is applied to the hook portion 3220 by the biasing member 3221, so that the rotary buckle 322 is in a locking state.

In this embodiment, only one rotating buckle 322 is needed to lock the end cover 31 and the dust barrel 32, and the structure is simpler and the installation and the disassembly are facilitated by a single-side clamping manner. Of course, two oppositely disposed rotation snaps 322 may be provided, without limitation.

The above embodiments merely illustrate the basic principle and features of the present invention, and the present invention is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A cyclone dust collecting apparatus comprising:

it is characterized in that the method comprises the steps of,

the second direction and the first direction form an included angle, so that the inlet is higher than the dust inlet, and the outlet is lower than the dust inlet;

the outlet is arranged away from the host;

dust carried by the dust exhaust air flow entering the cavity from the dust inlet rotates around the periphery of the cyclone barrel and then is separated and collected into the dust collection box, and the dust exhaust air flow enters the cyclone barrel through the inlet and is discharged out of the dust collection box through the outlet.

2. The cyclone dust collecting apparatus of claim 1, wherein a vertical distance between a top wall and a bottom wall of the dust box is H, and a vertical distance between a center position of the inlet and the bottom wall of the dust box is H, wherein 0.5.ltoreq.h/h.ltoreq.0.9.

3. Cyclone dust collecting apparatus according to claim 1 or 2, wherein the first direction and the second direction are disposed at an angle in a vertical plane, wherein the angle is 15 ° or more and 45 ° or less.

4. A cyclone dust collecting apparatus according to claim 1 or 2, wherein the cyclone includes a guide provided at the outlet, the guide guiding the direction of the air outlet to deviate from the second direction in a direction away from the main machine.

5. The cyclone dust collecting apparatus of claim 1, wherein the dust box further comprises a cover detachably connected to the main body and a dust barrel, wherein the cavity is formed in the dust barrel, and the dust inlet is formed in the cover.

6. The cyclone dust collecting apparatus of claim 5, wherein the dust box further comprises a dust blocking member disposed on a bottom wall of the dust bin opening.

7. A grinding apparatus comprising:

a body including a dust exhaust passage;

it is characterized in that the cyclone dust collecting device is also included, comprising:

the second direction and the first direction form an included angle, so that the inlet is higher than the dust inlet, the outlet is lower than the dust inlet, and the outlet is arranged away from the machine body;

8. The polishing apparatus as recited in claim 7 wherein the vertical distance between the top wall and the bottom wall of the dust box is H, and the vertical distance between the center position of the inlet and the bottom wall of the dust box is H, wherein 0.5.ltoreq.h/h.ltoreq.0.9.

9. The polishing apparatus of claim 7, wherein the first direction and the second direction are disposed at an angle in a vertical plane, wherein the angle is 15 ° or greater and 45 ° or less.

10. A grinding apparatus as defined in claim 8 or 9, wherein the cyclone comprises a guide provided at the outlet, the guide guiding the direction of the outlet wind away from the body relative to the second direction.

11. A grinding apparatus as defined in claim 8 or 9, wherein the dust box further comprises a dust guard disposed on a bottom wall of the dust box opening.

12. The polishing apparatus as recited in claim 7 wherein the dust box further comprises a detachably connected end cap and a dust canister, the end cap being detachably connected to the main body, the dust canister having the cavity formed therein, the end cap having the dust inlet formed therein;

13. A grinding apparatus as defined in claim 12, wherein the end cap is snap-fit with the dust canister.

14. The grinding apparatus defined in claim 7 wherein the body further comprises a first connector extending to form a tubular shape;

15. The grinding apparatus defined in claim 14, further comprising: