CN107158866A

CN107158866A - A kind of air inlet filter mechanism of angle grinder

Info

Publication number: CN107158866A
Application number: CN201710411073.3A
Authority: CN
Inventors: 李坚忠
Original assignee: ZHEJIANG SINO-CREATE ELECTRICAL APPLIANCE MANUFACTURING Co Ltd
Current assignee: ZHEJIANG SINO-CREATE ELECTRICAL APPLIANCE MANUFACTURING Co Ltd
Priority date: 2017-06-02
Filing date: 2017-06-02
Publication date: 2017-09-15

Abstract

The invention discloses a kind of air inlet filter mechanism of angle grinder, including the air inlet structure being arranged on angle grinder housing, the air inlet structure includes the air-inlet cavity with enclosure interior UNICOM, a kicker magnet is combined with the accent of air-inlet cavity, the kicker magnet carries the resigning chamber consistent with the accent shape, the accent position of the air-inlet cavity is provided with grid window, the strong magnetic wind guide strip corresponding with the gate hole position of grid window is arranged at intervals with resigning chamber, and the strong magnetic wind guide strip is obliquely installed with respect to gate hole, the periphery of the kicker magnet also pressure is provided with a buckling piece with ventilating opening, the periphery for being located at air-inlet cavity accent in the housing is separately provided for the embedded groove for being embedded in kicker magnet and the catching groove for buckling into buckling piece, prevent the iron filings in environment from being damaged by air inlet when being cooled down to motor to motor.

Description

A kind of air inlet filter mechanism of angle grinder

Technical field

The present invention relates to field of power tools, in particular, it is related to a kind of air inlet filter mechanism of angle grinder.

Background technology

Angle grinder is used for the polishing of various materials, when work, and the caloric value of its motor internal is big, so can carry Air inlet system is cooled down, is typically that air inlet is set in the bottom of housing, air outlet is set on the top of housing, when extraneous air Enter from air inlet and then after air outlet outflow, the heat of motor generation will be taken away, and then realize the effect cooled down to motor Really.

But in the environment using angle grinder, the interior foreign matter containing a large amount of gravels, aggregate chips and iron end, angle grinder is being used During these foreign matters be easily accessible inside angle grinder, these foreign matters enter angle grinder after be easily caused angle grinder motor internal Damage；Existing angle grinder increases a pluggable baffle plate to filter these foreign matters only on back cover, simple in construction, filtering effect It is really poor, and be difficult to clean.

The content of the invention

In view of this, it is an object of the invention to provide a kind of air inlet filter mechanism of the angle grinder of good filtration effect.

To achieve the above object, realized by following technological means：A kind of air inlet filter mechanism of angle grinder, including set The air inlet structure on angle grinder housing is put, the air inlet structure includes the air-inlet cavity with enclosure interior UNICOM, in air intake A kicker magnet is combined with the accent of chamber, the kicker magnet carries the resigning chamber consistent with the accent shape, in the air intake The accent position of chamber is provided with grid window, and the strong magnetic conductance corresponding with the gate hole position of grid window is arranged at intervals with resigning chamber Wind bar, and the strong magnetic wind guide strip is obliquely installed with respect to gate hole, the periphery also pressure of the kicker magnet is provided with a button with ventilating opening Component, the periphery for being located at air-inlet cavity accent in the housing is separately provided for being embedded in the embedded groove of kicker magnet and buckles into fastening The catching groove of part.

Further it is optimized for：The enclosure interior is additionally provided with a cyclone filter, the cyclone filter include shell, Base located at outer casing bottom, the cartridge filter in shell, the shell first enter provided with one along what its tangential direction was opened up Wind-guiding filtration members, the wind-guiding filtration members are provided with air port, first air inlet and the air-inlet cavity UNICOM, the cartridge filter Center provided with one by the air channel of its insertion, around conical down provided with some spaced tips centered on the air channel The second filter chamber, each second filter chamber offers the second air inlet set along its inner chamber tangential direction, described The first filter chamber is formed between the inwall and cartridge filter of shell, the base is provided with a dust-collecting cavity, and the dust-collecting cavity and One filter chamber and the equal UNICOM of the second filter chamber.

Further it is optimized for：Be additionally provided with the top of the wind-guiding filtration members annular cover lid, the centre bore of the cover lid with Air channel is matched, and the ring surface of cover lid crosses air holes provided with corresponding with the open top of second filter chamber.

Further it is optimized for：It is described cross air holes towards the second filter chamber side extension be provided with it is described cross air holes conducting Air holes wall is crossed, second air inlet is with crossing the high settings such as air holes wall.

Further it is optimized for：The opposite side of cover lid wind-guiding filtration members relatively is covered with aided filter part.

Further it is optimized for：The cartridge filter is with respect to the position ring correspondence interval of the second filter chamber of wind-guiding filtration members Provided with filter bores.

Further it is optimized for：The base is annular shape, and described dust-collecting cavity is arranged at the changing on face of base opposite shell, And the accent of dust-collecting cavity is provided with the dust-break mechanism that prevents that dust from spilling from dust-collecting cavity, the dust-break mechanism includes being arranged at collection The annular spigot surface of dirt chamber accent collar extension, annular spigot surface port is arranged on close to the annular envelope dirt face of dust-collecting cavity chamber arm, it is described It is to be obliquely installed that annular spigot surface and annular, which seal dirt face, and the annular gradient for sealing dirt face is more than the gradient of annular spigot surface.

Further it is optimized for：The shell is connected to by demountable structure on the anchor ring of base opposite shell, described Demountable structure is included located at the bottom of shell and along the fixture block of the outside uniform intervals projection of its bottom ring, changing located at base The neck matched on face and with the fixture block, the base realizes clamping and disengaging with shell in rotary course.

The advantage of the present invention compared with prior art is：Its enclosure interior is arranged on during the use of angle grinder Motor needs cooling, in cooling procedure, and wind enters from air inlet, then by being discharged again from air outlet after motor, realizes Cooling to motor, due to being provided with kicker magnet at air inlet position, inhales so as to be cut the iron filings produced by angle grinder Firmly, prevent from entering angle grinder enclosure interior, and by being provided with grid window, the resigning chamber in kicker magnet in the accent of air-inlet cavity It is upper to be provided with strong magnetic wind guide strip, by grid bed and the cooperation of strong magnetic wind guide strip, it can prevent the dust of bulky grain from entering shell Internal portion；Then into the wind in housing, it will be filtered again by cyclone filter, the dust of fine particle will be stacked into collection Dirt intracavitary, realizes the filtering to fine particle dust so that blows to the cooling wind hardly band impurity of motor, increases to motor Protection.

Brief description of the drawings

Fig. 1 is the air intake mouth mechanism decomposing schematic representation of embodiment angle grinder；

Fig. 2 is the cyclone filter axonometric schematic diagram in angle grinder housing in embodiment；

Fig. 3 is the decomposing schematic representation of cyclone filter in embodiment；

Fig. 4 is the schematic rear view of cyclone filter in embodiment；

Fig. 5 is Fig. 4 A-A schematic diagrames；

Fig. 6 is the dorsad semi-cutaway of cyclone filter in embodiment；

Fig. 7 is the base half-section diagram of cyclone filter in embodiment；

Fig. 8 is Fig. 7 B portions enlarged drawing；

Fig. 9 is the dorsad axonometric schematic diagram of cyclone filter in embodiment.

In figure, 1, housing；11st, air-inlet cavity；111st, catching groove；112nd, embedded groove；113rd, grid window；12nd, air outlet；13rd, it is electric Pond involucrum；21st, kicker magnet；211st, strong magnetic wind guide strip；22nd, buckling piece；3rd, shell；31st, the first air inlet；32nd, the first filter chamber； 33rd, wind chamber is crossed；34th, fixture block；4th, wind pipe；5th, cartridge filter；51st, filter bores；6th, wind-guiding filtration members；61st, air channel；62nd, Two filter chambers；621st, the second air inlet；7th, cover lid；71st, air holes is crossed；72nd, air holes wall is crossed；8th, aided filter part；9th, base；91、 Deslagging chamber；92nd, neck；93rd, annular spigot surface；931st, annular envelope dirt face；94th, folding sliding block；941st, shifting block；95th, dust export.

Embodiment

Invention is described in further detail below in conjunction with the accompanying drawings and by specific embodiment, following examples are descriptive , it is not limited protection scope of the present invention.

Embodiment

A kind of air inlet filter mechanism of angle grinder, referring first to accompanying drawing 1, including housing 1, is installed in one end of housing 1 There is sharpening, the other end is removably connected with a battery involucrum 13, the removably between housing 1 and battery involucrum 13 can be with It is that screw thread spins or direct snapping, is provided with the motor that driving sharpening is rotated, the rotating shaft of motor and is provided with inside housing 1 Cooling fan, wherein, air-inlet cavity 11 is provided with close to one end both sides of battery involucrum 13 in housing 1, close to sharpening one end Housing 1 on be provided with air outlet 12, when work, the rotating shaft of motor is rotated with cooling fan so that air is from entering Wind chamber 11 enters, and is discharged from air outlet 12, during this, and the air of flowing realizes the cooling to motor.

With continued reference to accompanying drawing 1, due to when using cornea machine, substantial amounts of iron filings can be produced in environment, so entering The accent position of wind chamber 11 is provided with iron powder collector, including kicker magnet 21, and kicker magnet 21 is embedded in the air intake for being arranged on housing 1 In the embedded groove 112 at the accent position of chamber 11, and also there is the catching groove being arranged on housing 1 in the periphery of embedded groove 112 again 111, catching groove 111 is combined with a buckling piece 22, and kicker magnet 21 is fixed, so that when the wind with iron filings, from air-inlet cavity 11 Into when, iron filings can be lived by strong magnetic, prevent from entering in housing 1, motor is damaged.When kicker magnet 21 is adsorbed Iron filings it is excessive when, buckling piece 22 can be pulled down, kicker magnet 21 is then removed, iron filings are cleared up, facilitate kicker magnet 21 Reuse or change.

In order to further increase the filter effect at the accent position of air-inlet cavity 11, grid is provided with the accent of air-inlet cavity 11 Window, is provided with the strong magnetic wind guide strip 211 that to delete hole corresponding with grid window at the resigning chamber position of kicker magnet 21, and by strong magnetic Wind guide strip 211 is arranged to skewed, facilitates the entrance of wind, and according to inclined degree, can be formed it is different size of enter air holes, this One is set, and can stop that the dust of bulky grain is entered in housing 1, motor is damaged.

In order to further increase the dustless degree of the wind by motor, cyclone filter is also provided with inside housing 1, is joined See accompanying drawing 2, the first air inlet 31 is provided with its shell 3, is connected respectively with air-inlet cavity 11, first air intake of the air from shell 3 Mouth 31 enters, and is come out from wind pipe 4, then flows to motor, finally discharged from the air outlet 12 of housing 1 so that pass through motor Wind hardly band dust, while being cooled down to motor, realize to the protecting effect of motor.

Referring next to accompanying drawing 3, cartridge filter 5, wind-guiding filtration members 6 are disposed with shell 3, are connected in the bottom of shell 3 Base 9 is connected to, the wind pipe 4 through base 9 is connected with the air channel 61 of wind-guiding filtration members 6, in the upper of wind-guiding filtration members 6 Portion is provided with cover lid 7, and aided filter part 8 is provided with cover lid 7.

And then reference picture 4 is combined to Fig. 6, the first filter chamber 32 will be formed between cartridge filter 5 and shell 3, due to the One air inlet 31 is provided in the tangential direction of housing 1, so the air into shell 3 will enter along tangential direction Shell 3, rotates in the first filter chamber 32, and mixing aerial a part of sandstone, dust can be by centrifugal force Effect is impinged upon on the wall of the first filter chamber 32 so that a part of dust, the rotation function loss of sandstone, and then is fallen to and the In the dust-collecting cavity of the UNICOM of one filter chamber 32；Set respectively with respect to the position of the second filter chamber 62 in wind-guiding filtration members 6 in cartridge filter 5 Filter bores 51 are equipped with, compared to the mode that filter bores 51 are uniformly arranged on cartridge filter 5, the number that filter bores 51 are set are reduced Mesh, and corresponding filter bores 51 are set just for the position provided with the second filter chamber 62, that is, improve and entered by cartridge filter 5 The specific aim of the air of second filter chamber 62, has so that entering the annular space formed by shell 3 and cartridge filter 5 and rotates Air and cartridge filter 5 between frictional force, so as to improve the fluidity of motion of air, can finally improve into by shell 3 and the centrifugation ability of air that rotates of annular space of the formation of cartridge filter 5, namely cause large-volume particulate to strike this The probability of annular space, substantially increases the filter capacity of the first filter chamber 32.

Then air will be entered in the second filter chamber 62 by cartridge filter 5, when by cartridge filter 5, can quilt Filter bores 51 filter out the sandstone of larger particles, dust, and the sandstone filtered out will drop to dust by the first filter chamber 32 Intracavitary, realizes secondary filtering.

Then due to the second air inlet 621 is also to be set along the inner chamber tangential direction of the second filter chamber 62, so that Air into the second filter chamber 62 can also rotate, due to the second filter chamber 62 sophisticated position down, a part with Little particle impurity that air entered in the second filter chamber 62 can by spirally-guided power effect to the second filter chamber 62 Lower motion is directly discharged into dust-collecting cavity, and the little particle impurity of another part subject to centrifugal forces can impinge upon the second filtering On the inwall of chamber 62, dropped to after kinetic energy loss in dust-collecting cavity, so as to realize the filter process of many fine particles；And pass through cover Lid 7 covers the top of wind-guiding filtration members 6 so that the air for entering the second filter chamber 62 from the second air inlet 621 can be more Plus the stable chamber along the second filter chamber 62 does ring rotation, it is to avoid the wind of a part is directly from the second air inlet 621 Top the problem of directly dissipate；Further, by being arranged on air holes 71 towards the mistake air holes in the direction of the second filter chamber 62 71 walls so that annular space is formed between the second air inlet 621 and the mistake wall of air holes 71, and then is caused from the second air inlet 621 The air come in the second filter chamber 62 centrifugal force increase, finally increase little particle impurity in the second filter chamber 62 from The heart hits the probability of inwall, the ability of increase fine particle filtering in the second filter chamber 62.

Then air comes out the once filtering for crossing aided filter part 8 advanced afterwards from the second filter chamber 62 and entered wind chamber In room 33, then entered by aided filter part 8 in air channel 61 from wind chamber 33 is crossed, so there is provided after aided filter part 8, The wind come out from the second filter chamber 62 can be entered back into air channel 61 after filter effect twice again by aided filter part 8 It is interior, the clean degree of the air entered in air channel 61 is greatly improved and ensure that, the step filtered by this above-mentioned several road is played, both Granule foreign can be collected while being filtered by whirlwind air filter from the dust-collecting cavity of base 9, can guarantee that again from discharge pipe The cleanliness factor for the wind that road 4 comes out.

It is the schematic diagram of base 9 referring then to accompanying drawing 7-9, base 9 is annular, and its centre bore is used for through discharge pipe Road 4, then the face of changing of its relative first filter chamber 32 and the second filter chamber 62 are provided with dust-collecting cavity, are provided with the accent of dust-collecting cavity The dust-break structure that the dust for entering dust-collecting cavity is poured out is prevented, the dust-break structure includes the ring for being arranged at dust-collecting cavity accent collar extension Shape spigot surface 93, the annular port of spigot surface 93 is arranged on close to the annular envelope dirt face 931 of dust-collecting cavity chamber arm, the annular spigot surface 93 be to be obliquely installed with annular envelope dirt face 931, and the gradient of the gradient more than annular spigot surface 93 in annular envelope dirt face 931.And And for convenience pour out dust out of base 9 dust-collecting cavity, dust export 95 is provided with also on another anchor ring of base 9, and The dust export 95 is combined with one and can be turned on and off on its folding sliding block 94, folding sliding block 94 with a shifting block 941, convenient To stirring for folding sliding block 94.Further, base 9 is disassembled from shell 3 for convenience, is set and is blocked in the bottom of shell 3 Block 34 and the mode that neck 92 is set on base 9, complete the clamping and disengaging of shell 3 and base 9 in rotary course, convenient Realize base 9 dismounting step play.

Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims

1. a kind of air inlet filter mechanism of angle grinder, including the air inlet structure being arranged on angle grinder housing (1), its feature It is, the air inlet structure includes the air-inlet cavity (11) with the internal UNICOM of housing (1), coordinates at the accent of air-inlet cavity (11) There is a kicker magnet (21), the kicker magnet (21) carries the resigning chamber consistent with the accent shape, in the air-inlet cavity (11) Accent position be provided with grid window (113), be arranged at intervals with resigning chamber corresponding with the gate hole position of grid window (113) Strong magnetic wind guide strip (211), and the strong magnetic wind guide strip (211) is obliquely installed with respect to gate hole, the periphery of the kicker magnet (21) Also pressure is provided with a buckling piece (22) with ventilating opening, and the periphery for being located at air-inlet cavity (11) accent in the housing (1) is set respectively Have for being embedded in the embedded groove (112) of kicker magnet (21) and buckling into the catching groove (111) of buckling piece (22).

2. the air inlet filter mechanism of a kind of angle grinder according to claim 1, it is characterised in that in the housing (1) Portion is additionally provided with a cyclone filter, and the cyclone filter includes shell (3), the base (9) located at shell (3) bottom, set In the cartridge filter (5) in shell (3), the shell (3) is provided with first air inlet (31) opened up along its tangential direction, described Wind-guiding filtration members (6), the wind-guiding are provided with first air inlet (31) and the air-inlet cavity (11) UNICOM, the cartridge filter (5) The center of filtration members (6), by the air channel (61) of its insertion, is set provided with one centered on the air channel (61) around provided with some intervals The tip put conical the second filter chamber (62) down, each second filter chamber (62) is offered along its inner chamber tangent line The second air inlet (621) that direction is set, the first filter chamber (32) is formed between the inwall and cartridge filter (5) of the shell (3), The base (9) is provided with a dust-collecting cavity, and the dust-collecting cavity and the first filter chamber (32) and the second filter chamber (62) UNICOM.

3. a kind of air inlet filter mechanism of angle grinder according to claim 2, it is characterised in that the wind-guiding filtration members (6) the cover lid (7) of annular is additionally provided with the top of, the centre bore of the cover lid (7) is matched with air channel (61), the annular of cover lid (7) Air holes (71) is crossed in face provided with corresponding with the open top of second filter chamber (62).

4. the air inlet filter mechanism of a kind of angle grinder according to claim 3, it is characterised in that described to cross air holes (71) It is provided with towards the side extension of the second filter chamber (62) and crosses mistake air holes (71) wall that air holes (71) is turned on described, described second enters Air port (621) is with crossing the high settings such as air holes (71) wall.

5. a kind of air inlet filter mechanism of angle grinder according to claim 3, it is characterised in that cover lid (7) phase To the opposite sides of wind-guiding filtration members (6) covered with aided filter part (8).

6. a kind of air inlet filter mechanism of angle grinder according to claim any one of 2-5, it is characterised in that the mistake Filter cylinder (5) is provided with filter bores (51) with respect to the position ring correspondence interval of the second filter chamber (62) of wind-guiding filtration members (6).

7. a kind of air inlet filter mechanism of angle grinder according to claim 6, it is characterised in that the base (9) is Annular shape, described dust-collecting cavity is arranged at the changing on face of base (9) opposite shell (3), and in dust-collecting cavity accent be provided with it is anti- The dust-break mechanism that only dust spills from dust-collecting cavity, the dust-break mechanism includes being arranged at the annular spigot surface of dust-collecting cavity accent collar extension (93) annular envelope dirt face (931) of annular spigot surface (93) port close to dust-collecting cavity chamber arm, the annular spigot surface, are arranged on And annular envelope dirt face (931) is to be obliquely installed, and the gradient of annular envelope dirt face (931) is more than annular spigot surface (93) (93) Gradient.

8. the air inlet filter mechanism of a kind of angle grinder according to claim 7, it is characterised in that the shell (3) is led to Cross demountable structure to be connected on the anchor ring of base (9) opposite shell (3), described demountable structure includes being located at shell (3) Bottom and along the fixture block (34) of the outside uniform intervals projection of its bottom ring, located at base (9) change on face and with the card The neck (92) that block (34) matches, the base (9) realizes clamping and disengaging with shell (3) in rotary course.