CN207980740U

CN207980740U - A kind of air inlet filter mechanism of angle grinder

Info

Publication number: CN207980740U
Application number: CN201720637378.1U
Authority: CN
Inventors: 李坚忠
Original assignee: ZHEJIANG SINO-CREATE ELECTRICAL APPLIANCE MANUFACTURING Co Ltd
Current assignee: Li Jianzhong
Priority date: 2017-06-02
Filing date: 2017-06-02
Publication date: 2018-10-19
Anticipated expiration: 2027-06-02

Abstract

The utility model discloses a kind of air inlet filter mechanisms of angle grinder, including the air inlet structure on angle grinder shell is arranged, the air inlet structure includes the air-inlet cavity with enclosure interior unicom, a kicker magnet is combined at 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, strong magnetic wind guide strip corresponding with the gate hole position of grid window is arranged at intervals on 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 equipped with a fastener with ventilation opening, the periphery for being located at air-inlet cavity accent in the shell is separately provided for the embedded groove of embedded kicker magnet and buckles into the catching groove of fastener, prevent the iron filings in environment from being damaged to motor when being cooled down to motor by air inlet.

Description

A kind of air inlet filter mechanism of angle grinder

Technical field

The utility model is related to field of power tools, more specifically, being related to a kind of air inlet filter mechanism of angle grinder.

Background technology

Angle grinder is used for the polishing of a variety of materials, and at work, the calorific value of motor internal is big, so can carry Typically air inlet is arranged in the lower part of shell in cooling air inlet system, air outlet is arranged on the top of shell, when extraneous air Enter then after air outlet outflow from air inlet, the heat of motor generation will be taken away, and then realize the effect cooled down to motor Fruit.

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 using These foreign matters are easily accessible inside angle grinder in the process, these foreign matters are easy to cause angle grinder motor internal after entering angle grinder Damage；Existing angle grinder increases a pluggable baffle to filter these foreign matters only on back cover, and simple in structure, filtering is imitated Fruit is poor, and is difficult to clean.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of air inlet filter of the angle grinder of good filtration effect Structure.

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

Advanced optimize for：The enclosure interior is additionally provided with a cyclone filter, the cyclone filter include shell, Set on the pedestal of outer casing bottom, the cartridge filter in shell, the shell be equipped with one along its tangential direction open up first into Air port, first air inlet and the air-inlet cavity unicom, the cartridge filter is interior to be equipped with wind-guiding filtration members, the wind-guiding filtration members Center be equipped with air duct penetrate through, centered on the air duct around equipped with several spaced tips it is conical downward The second filter chamber, each second filter chamber offers the second air inlet along the setting of its inner cavity tangential direction, described The first filter chamber is formed between the inner wall and cartridge filter of shell, the pedestal 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.

Advanced optimize for：Be additionally provided at the top of the wind-guiding filtration members annular the cover, the centre bore of the cover with Air duct matches, and the annular surface of the cover crosses air holes equipped with corresponding with the open top of the second filter chamber.

Advanced optimize for：The side extension for crossing air holes towards the second filter chamber is equipped with crosses what air holes was connected with described Cross air holes wall, second air inlet and the high settings such as air holes wall excessively.

Advanced optimize for：The cover is covered with aided filter part with respect to the other side of wind-guiding filtration members.

Advanced optimize for：The cartridge filter corresponds to interval with respect to the position circumferential direction of the second filter chamber of wind-guiding filtration members Equipped with filter hole.

Advanced optimize for：The pedestal is annular shape, and the dust-collecting cavity is set to the changing on face of pedestal opposite shell, And the dust-break mechanism for preventing dust from spilling from dust-collecting cavity is provided in the accent of dust-collecting cavity, the dust-break mechanism includes being set to collection The annular envelope dirt face close to dust-collecting cavity chamber arm in annular guide surface port is arranged in the annular guide surface of dirt chamber accent collar extension, described Annular guide surface and annular envelope dirt face are to be obliquely installed, and the gradient in annular envelope dirt face is more than the gradient of annular guide surface.

Advanced optimize for：The shell is connected to by detachable structure on the anchor ring of pedestal opposite shell, described Detachable structure includes set on the bottom of shell and along its bottom circumferential fixture block of uniform intervals projection, changing set on pedestal outward The card slot to match on face and with the fixture block, the pedestal are realized clamping with shell and are detached from rotary course.

The utility model compared with prior art the advantages of be：It is arranged in its shell during the use of angle grinder The motor in portion needs to cool down, and in cooling procedure, wind enters from air inlet, then passes through after motor and is discharged again from air outlet, Cooling to motor is realized, due to being provided with kicker magnet at air inlet position, so as to will be by angle grinder iron caused by cutting Bits are sucked, and prevent from entering angle grinder enclosure interior, and be provided with grid window, allowing in kicker magnet by the accent in air-inlet cavity Being provided with strong magnetic wind guide strip on the chamber of position can prevent the dust of bulky grain from entering by the cooperation of grid bed and strong magnetic wind guide strip To enclosure interior；It then into the wind in shell, and will be filtered by cyclone filter, the dust of fine particle will be accumulated Into dust-collecting cavity, the filtering to fine particle dust is realized so that the cooling wind hardly band impurity for blowing to motor increases to electricity The protection of machine.

Description of the drawings

Fig. 1 is the air inlet mouth mechanism decomposition diagram of embodiment angle grinder；

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

Fig. 3 is the decomposition diagram of cyclone filter in embodiment；

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

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

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

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

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

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

In figure, 1, shell；11, air-inlet cavity；111, catching groove；112, embedded groove；113, grid window；12, air outlet；13, electric Pond involucrum；21, kicker magnet；211, strong magnetic wind guide strip；22, fastener；3, shell；31, the first air inlet；32, the first filter chamber； 33, wind chamber is crossed；34, fixture block；4, wind pipe；5, cartridge filter；51, filter hole；6, wind-guiding filtration members；61, air duct；62, Two filter chambers；621, the second air inlet；7, the cover；71, air holes is crossed；72, air holes wall is crossed；8, aided filter part；9, pedestal；91、 Deslagging chamber；92, card slot；93, annular guide surface；931, annular envelope dirt face；94, sliding block is opened and closed；941, shifting block；95, dust export.

Specific implementation mode

It is described in further detail below in conjunction with the accompanying drawings and by specific embodiment to utility model, following embodiment only describes Property, it is not restrictive the scope of protection of the utility model.

Embodiment

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

With continued reference to attached drawing 1, due to when using cornea machine, will produce a large amount of iron filings in environment, so into 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 inlet being arranged in shell 1 In the embedded groove 112 at 11 accent position of chamber, and also there is the catching groove being arranged on shell 1 in the periphery of embedded groove 112 again 111, catching groove 111 is combined with a fastener 22, and kicker magnet 21 is fixed, to work as the wind with iron filings, from air-inlet cavity 11 Into when, iron filings can be lived by strong magnetic, prevented from entering in shell 1, be damaged to motor.When kicker magnet 21 adsorbs Iron filings it is excessive when, fastener 22 can be removed, kicker magnet 21 is then removed, iron filings are cleared up, facilitate kicker magnet 21 It reuses or replaces.

The filter effect at 11 accent position of air-inlet cavity in order to further increase, grid is provided at the accent of air-inlet cavity 11 Window is provided in the resigning cavity portion of kicker magnet 21 position and deletes the corresponding strong magnetic wind guide strip 211 in hole with grid window, 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 setting, can stop that the dust of bulky grain enters in shell 1, be damaged to motor.

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

Referring next to attached drawing 3, it is disposed with cartridge filter 5, wind-guiding filtration members 6 in shell 3, connects in the lower part of shell 3 It is connected to pedestal 9, the wind pipe 4 across pedestal 9 is connected at the air duct of wind-guiding filtration members 6 61, in the upper of wind-guiding filtration members 6 Portion is provided with the cover 7, and aided filter part 8 is provided in the cover 7.

And then combine with reference to fig. 4 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 shell 1, so the air into shell 3 will enter along tangential direction Shell 3 rotates in the first filter chamber 32, and the aerial a part of sandstone of mixing, dust can be by centrifugal force Effect impinges upon on the wall of the first filter chamber 32 so that the rotation function loss of a part of dust, sandstone, and then fall to and the In the dust-collecting cavity of one filter chamber, 32 unicom；It is set respectively with respect to the position of the second filter chamber 62 in wind-guiding filtration members 6 in cartridge filter 5 It is equipped with filter hole 51, compared to the mode for being uniformly arranged filter hole 51 on cartridge filter 5, reduces the number of setting filter hole 51 Mesh, and corresponding filter hole 51 is set just for the position equipped with the second filter chamber 62, that is, it improves and is 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 can finally be improved by shell to improve the fluidity of motion of air 3 and the centrifugation ability of air that rotates of the annular space that is formed of cartridge filter 5, namely large-volume particulate is made 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, can quilt when by cartridge filter 5 Filter hole 51 filters out the sandstone of larger particles, dust, and the sandstone filtered out will fall to dust by the first filter chamber 32 Intracavitary realizes secondary filtering.

Then due to the second air inlet 621 is also the inner cavity tangential direction setting along the second filter chamber 62, so that Air into the second filter chamber 62 can also rotate, due to the second filter chamber 62 tip position downward, a part with Air enter little particle impurity in the second filter chamber 62 can be by the effect of spirally-guided power 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 inner wall of chamber 62, fallen in dust-collecting cavity after kinetic energy loss, to realize the filter process of more fine particles；And pass through cover Lid 7 covers the top of wind-guiding filtration members 6 so that the air that the second filter chamber 62 is entered from the second air inlet 621 can be more Add the stable chamber along the second filter chamber 62 to do ring rotation, avoids the wind of a part directly from the second air inlet 621 Top the problem of directly dissipating；Further, mistake air holes of the air holes 71 towards 62 direction of the second filter chamber is being crossed by being arranged 71 walls so that annular space is formed between the second air inlet 621 and excessively 71 wall of air holes, so that from the second air inlet 621 Centrifugal force of the air come in the second filter chamber 62 increases, finally increase little particle impurity in the second filter chamber 62 from The heart hits the probability of inner wall, increases the ability that fine particle filters in the second filter chamber 62.

Then air comes out the primary filtering for crossing aided filter part 8 advanced later from the second filter chamber 62 and entered wind chamber In room 33, then entered in air duct 61 by aided filter part 8 from wind chamber 33 is crossed, so provided with after aided filter part 8, The wind come out from the second filter chamber 62 can be entered back into air duct 61 after the filter effect twice by aided filter part 8 again It is interior, it greatly improves and ensure that the clean degree for entering the air in air duct 61, played by the step of this above-mentioned a few road filtering, both Can granule foreign be collected while being filtered by whirlwind air filter from the dust-collecting cavity of pedestal 9, and can guarantee from discharge pipe The cleanliness factor for the wind that road 4 comes out.

It is the schematic diagram of pedestal 9 referring then to attached drawing 7-9, pedestal 9 is circular ring shape, and centre bore is used for across discharge pipe Road 4, then the face of changing of its opposite first filter chamber 32 and the second filter chamber 62 are provided with dust-collecting cavity, are provided in the accent of dust-collecting cavity The dust-break structure that the dust for entering dust-collecting cavity is poured out is prevented, which includes to be set to the ring of dust-collecting cavity accent collar extension The annular envelope dirt face 931 close to dust-collecting cavity chamber arm, the annular guide surface in 93 port of annular guide surface is arranged in shape guide surface 93 93 and annular envelope dirt face 931 be to be obliquely installed, and the gradient in annular envelope dirt face 931 is more than the gradient of annular guide surface 93.And And for convenience pour out dust out of pedestal 9 dust-collecting cavity, dust export 95 is provided with also on another anchor ring of pedestal 9, and The dust export 95, which is combined with one, can be turned on and off its folding sliding block 94, and opening and closing band on sliding block 94, there are one shifting blocks 941, convenient To stirring for folding sliding block 94.Further, it is disassembled from shell 3 in order to facilitate pedestal 9, is arranged in 3 bottom of shell and blocks Block 34 and the mode that card slot 92 is arranged on pedestal 9 complete the clamping and disengaging of shell 3 and pedestal 9 in rotary course, convenient Realize pedestal 9 dismounting step play.

The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the scope of protection of the utility model.It should refer to Go out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims

1. a kind of air inlet filter mechanism of angle grinder includes air inlet structure of the setting on angle grinder shell (1), feature It is, the air inlet structure includes the air-inlet cavity (11) with the internal unicom of shell (1), is coordinated 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 on 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 equipped with a fastener (22) with ventilation opening, and the periphery that air-inlet cavity (11) accent is located in the shell (1) is respectively set It is useful for the embedded groove (112) of embedded kicker magnet (21) and buckles into the catching groove (111) of fastener (22).

2. a kind of air inlet filter mechanism of angle grinder according to claim 1, which is characterized in that in the shell (1) Portion is additionally provided with a cyclone filter, and the cyclone filter includes shell (3), the pedestal (9) for being set to shell (3) bottom, sets In the cartridge filter (5) in shell (3), the shell (3) is equipped with first air inlet (31) opened up along its tangential direction, described First air inlet (31) and the air-inlet cavity (11) unicom, the cartridge filter (5) is interior to be equipped with wind-guiding filtration members (6), the wind-guiding The center of filtration members (6) is equipped with an air duct (61) penetrated through, is set around equipped with several intervals centered on the air duct (61) Conical the second filter chamber (62), each second filter chamber (62) offer along its inner cavity tangent line the tip set downward The second air inlet (621) of direction setting, the first filter chamber (32) is formed between the inner wall and cartridge filter (5) of the shell (3), The pedestal (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) equal unicom.

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

4. a kind of air inlet filter mechanism of angle grinder according to claim 3, which is characterized in that described to cross air holes (71) Towards the second filter chamber (62) side extend be equipped with it is described cross air holes (71) be connected mistake air holes (71) wall, described second into Air port (621) and the high settings such as air holes (71) wall excessively.

5. a kind of air inlet filter mechanism of angle grinder according to claim 3, which is characterized in that the cover (7) phase Aided filter part (8) is covered with to the other side of wind-guiding filtration members (6).

6. according to a kind of air inlet filter mechanism of angle grinder of claim 2-5 any one of them, which is characterized in that the mistake Filter cylinder (5) is equipped with filter hole (51) with respect to what the position circumferential direction correspondence of the second filter chamber (62) of wind-guiding filtration members (6) was spaced.

7. a kind of air inlet filter mechanism of angle grinder according to claim 6, which is characterized in that the pedestal (9) is Annular shape, the dust-collecting cavity are set to the changing on face of pedestal (9) opposite shell (3), and are provided in the accent of dust-collecting cavity anti- The dust-break mechanism that only dust spills from dust-collecting cavity, the dust-break mechanism include being set to the annular guide surface of dust-collecting cavity accent collar extension (93), setting seals dirt face (931) in annular guide surface (93) port close to the annular of dust-collecting cavity chamber arm, the annular guide surface (93) and annular envelope dirt face (931) is to be obliquely installed, and the gradient of annular envelope dirt face (931) is more than annular guide surface (93) Gradient.

8. a kind of air inlet filter mechanism of angle grinder according to claim 7, which is characterized in that the shell (3) is logical It crosses detachable structure to be connected on the anchor ring of pedestal (9) opposite shell (3), the detachable structure includes being set to shell (3) Bottom and along the circumferential fixture block (34) of uniform intervals projection outward in its bottom, be set to pedestal (9) change on face and with the card The card slot (92) that block (34) matches, the pedestal (9) are realized clamping with shell (3) and are detached from rotary course.