CN2142773Y

CN2142773Y - Improved structure of pneumatic emery wheel with dust-collecting function

Info

Publication number: CN2142773Y
Application number: CN 92239109
Authority: CN
Inventors: 黄淦基
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-27
Filing date: 1992-10-27
Publication date: 1993-09-29
Anticipated expiration: 2002-10-27

Abstract

The utility model discloses an improved structure of a pneumatic emery wheel with the dust-collecting function, comprising a body, a pneumatic motor, a lower air chamber, an upper impeller, a lower impeller, a deflector, a backing ring, a baffle seat, and an emery wheel plate, wherein, the grinding wheel plate is provided with through holes, and the fines can be inhaled in an upper air chamber via the through hole and the grinding wheel plate and can flow in the deflector via the lower impeller. The upper impeller is positioned above the deflector, and the upper impeller can drive the fines flowing from the deflector to continuously rotate and take the fines the place which is near the guide hole of the lower air chamber, and the fines can be exhausted by an air release pipe. The pneumatic motor can drive the upper and the lower impellers to simultaneously rotate, and the upper inhaled air flow is comparatively strong thereby; the inhaled fines can not stay in the lower air chamber and the body and can be exhausted following high-pressure gas. The upper and the lower impellers also have high attractive force at the time of low-speed rotation.

Description

Improved structure of pneumatic emery wheel with dust-collecting function

The utility model relates to a kind of air sander structure-improved with dust-absorbing function, and it mainly is to establish impeller on above the deflector, and impeller can constantly bring to fines near the guide hole of lower chamber on this, and fines is discharged by blast pipe; So that impeller also has high suction under the slow-speed of revolution, and fines can constantly discharge along with gases at high pressure, has practical value.

With reference to Fig. 1, has the exploded perspective view of the air sander of dust-absorbing function for prior art; The air sander that has dust-absorbing function in the prior art is to establish an air inlet pipe 13, a blast pipe 14, a upper chamber 11 and a lower chamber 12 on body 1; When gases at high pressure enter upper chamber 11 by air inlet pipe 13, will make rotating shaft 211 rotations of air pressure motor 21, and drive guide plate 22, vane group 23, separate seat plate 24 and emery wheel plate 25 rotate together.

With reference to Fig. 1,2, during vane group 23 rotations, will produce inspiratory flow on one, and make fines enter lower chamber 12 by the open-work 251 of emery wheel plate 25 and the open-work 241 of separate seat plate 24, fines enters its gap 232 via the open-work 231 of vane group 23 again, and outwards flows out; Then again via the guide groove 221 of guide plate 22 to center flow, and enter upper chamber 11 via circular hole 222; When gases at high pressure are discharged by the port one 41 of blast pipe 14, will produce pull of vacuum, and near the fines the port one 41 will be discharged.

Have the air sander of dust-absorbing function in the prior art because design is bad, so cause following disappearance:

1. fines enters after the upper chamber 11, to rest within the annular section of 11 of air pressure motor 21 and upper chambers, and the suction of port one 41 is limited, only the fines in a certain angular range can be discharged, that is only near the fines port one 41 could be discharged along with gas, and the interior fines of annular section of 360 ° of scopes is discharged fully; So in use, most fines can rest in the upper chamber 11, and fines can more amass the more, thereby every uses a period of time, and just need be taken air sander apart, and fines is removed, and could continue use, cause user's inconvenience.

2. air sander must apply pressure to body 1 in use, and emery wheel plate 25 is closely contacted with plank or wall, just can reach the effect of sand milling; And when applying pressure to body 1, will cause the rotating speed of vane group 23 to reduce, the last inspiratory flow of its generation also reduces thereupon, so in use, the poor effect of suction fines, fines still can fly upward over the sky.

For improveing the air sander that routine has dust-absorbing function, the utility model is in providing a kind of air sander structure-improved with dust-absorbing function.

Main purpose of the present utility model is to provide a kind of hand grinding abrasive disk structure-improved with dust-absorbing function, the fines that sucks lower chamber is discharged by blast pipe fully, and fines is remained within lower chamber or the body.

Secondary objective of the present utility model is to provide a kind of hand grinding abrasive disk structure-improved with dust-absorbing function, and it has upper and lower impeller, and last inspiratory flow is stronger, so even under the slow-speed of revolution, also have high suction, fines can be sucked in the lower chamber fully.

The utlity model has the air sander structure-improved of dust-absorbing function, be primarily characterized in that: the guide hole of lower chamber is to be communicated with the port of blast pipe; The deflector top is provided with impeller, it can constantly bring to fines near the guide hole of lower chamber, and by means of the pull of vacuum of blast pipe port, and fines is discharged by blast pipe, so fines can not rest in lower chamber and the body, and can constantly discharge along with gases at high pressure.

Accidental quality of the present utility model is: air pressure motor can drive upper and lower impeller and rotate together, and makes on it inspiratory flow stronger, so even the rotating speed of impeller reduces, enough suction is also arranged, fines is sucked in the lower chamber, is discharged again.

Below with regard to a specific embodiment of the present utility model, conjunction with figs. is described in detail its architectural feature, so that the utility model can further be understood.

Fig. 1 is the three-dimensional exploded view that prior art has the air sander of dust-absorbing function;

Fig. 2 is the side cutaway view that prior art has the air sander of dust-absorbing function;

Fig. 3 is the structure improved three-dimensional exploded view of air sander that the utlity model has dust-absorbing function;

Fig. 4 is the structure improved side cutaway view of air sander that the utlity model has dust-absorbing function;

Fig. 5 is the air sander structure-improved bottom sectional view of impeller wherein that the utlity model has dust-absorbing function;

Fig. 6 is the air sander structure-improved bottom view of deflector wherein that the utlity model has dust-absorbing function;

Fig. 7 is the structure improved three-dimensional combination figure of air sander that the utlity model has dust-absorbing function.

With reference to Fig. 3, be three-dimensional exploded view of the present utility model; The air sander structure-improved that the utlity model has dust-absorbing function mainly comprises impeller 61 on a body 3, an air pressure motor 4, the lower chamber 5,, once impeller 62, a deflector 7, a gasket ring 8, a dividing plate seat 9 and an emery wheel plate 10.

Body 3 is provided with upper chamber 31 and handle 32, wherein be provided with air inlet pipe 33 and blast pipe 34 in the handle 32, air inlet pipe 33 can flow into for gases at high pressure, and blast pipe 34 then can be discharged for gases at high pressure and fines, handle 32 tops are provided with push switch 321, and it can be controlled gases at high pressure and enter in the air admission hole 33; Be provided with the exhaust chamber 311 of a ring-type in the upper chamber 31, it can be for the gas flow of desire discharging, and an elastic tape 312 is established in exhaust chamber 311 tops, and its gas that the gas that enters and desire are discharged is isolated.

With reference to Fig. 3,4, air pressure motor 4 is to be placed in the upper chamber 31 of body 3, and the end that makes air inlet pipe 33 inserts in the air admission hole 42 of air pressure motor 4 tops, when gases at high pressure enter, below rotating shaft 41 will be driven in rotation, and gas is discharged by the steam vent 43 of sidewall, and wherein steam vent 43 is to communicate with an end of a fine duct 342, the port 341 of blast pipe 34 then is connected with the other end of fine duct 342; With reference to (A) among Fig. 3 figure, be the bottom view of the utility model air pressure motor, the root 411 of rotating shaft 41 is to be the hexagon cylinder, and the top of rotating shaft 41 is provided with a keyhole 422 and screw 421.

With reference to Fig. 3,4, lower chamber 5 is ducted bodies, its inside is provided with a retainer ring 51, some screws and a guide hole 53 are established in the top, its shell then with a rubber case 54 fit mutually, its centre feed hole 53 is to communicate with the port 341 of blast pipe 34, and edge is provided with two circular-arc runners 531,532 on the guide hole 53, so that fines can be discharged smoothly by guide hole 53, and can not produce the dead angle.

With reference to Fig. 6, deflector 7 is to place in the retainer ring 51 of lower chamber 5, it is provided with upper clip 71, lower clamping piece 72 and lattice sheet 73, upper and lower intermediate plate center is respectively equipped with open-work 711 and reaches open-work 721 down, wherein upper and lower open-work 711,712 is big than the sectional area of rotating shaft 41 all, so can be fixed in the retainer ring 51, and can be with rotating shaft 41 rotations; And upper clip 71 is big than lower clamping piece 72, and go up open-work 711 down open-work 721 be big, flow into 73 of lattice sheets in order to air-flow by the periphery of deflector 7, and inwardly by last open-work 711 outflows.

With reference to Fig. 3,5, impeller 62 all was made up of upper clip 63, lower clamping piece 64 and some lattice sheets 65 under last impeller 61 reached; Last impeller 61 is to be positioned at deflector 7 tops, and impeller 62 is to be positioned at deflector 7 belows down, and upper and lower intermediate plate center is respectively equipped with open-work 631 and reaches open-work 641 down, it is less wherein to go up open-work 631, and be to be hexagon, so that the root 411 of rotating shaft 41 is passed, and with rotating shaft 41 rotations; Following open-work 641 is bigger, upwards flows in order to air-flow in the gap of lattice sheet 65.

With reference to Fig. 3,61 in air pressure motor 4 and last impeller are provided with a upper gasket 82, then are provided with a lower gasket 83 between the upper and

lower impeller

61,62, can be with rotating shaft 41 rotations in order to upper and

lower impeller

61,62.

The periphery of gasket ring 8 is provided with some screws 81, its can with the screwhole spiro bonding of lower chamber 5.

Separate seat plate 9 is provided with some open-works 93, its center is provided with an axis hole 91, and axis hole 91 is provided with a keyhole 92, its can with the keyhole 422 of rotating shaft 41 bonding mutually, so that separate seat plate 9 is with rotating shaft 41 rotation, and can the axis hole 91 and the screw 421 of rotating shaft 41 be screwed by means of a screw.

Separate seat plate 9 belows are provided with a piece 94, and its center is provided with a screw.

The plate face of emery wheel plate 10 is provided with some open-works 101, and its center is provided with a bolt 102, and this bolt 102 is fit to screw togather with the center screw of axle piece 94.

With reference to Fig. 3,4, when last, following impeller 61, during 62 rotations, can produce inspiratory flow on, and with fines by open-

work

101,93 or suck lower chamber 5 by the space of emery wheel plate 10 upper limbs, fines can be by following open-work 641 inflows of impeller 62 down, outwards flow out via 65 of lattice sheets again, flow out by the periphery of deflector 7 again, and via 73 last open-works 711 outflows of lattice sheet to the center, then the following open-work 641 by last impeller 61 flow to 63 of its mesh division boards, again fines is discharged by the periphery of last impeller 61, because constantly rotation of last impeller 61, so can constantly bring near the guide hole 53 of lower chamber 5 by the fines that deflector 7 flows into.

When gases at high pressure flow into fine duct 342 from the steam vent 43 of air pressure motor 4, flow velocity will increase, and the bore of fine duct 342 is little than blast pipe 34 ports 341 bores, so work as gases at high pressure in fine duct 342 entry ports 341, to produce a pull of vacuum, so the port 341 of fines by guide hole 53 suction blast pipes 34 can be discharged again.

By above the utility model architectural feature, can find out that the utility model has following advantage:

1. the utility model is provided with impeller 61 and fines constantly can be brought near the guide hole 53 of lower chamber 5, and fines is discharged by blast pipe 34, so fines can not rest in the lower chamber 5, and can constantly discharge along with gases at high pressure.

2. the utility model is provided with upper and

lower impeller

61,62, so last inspiratory flow of the present utility model is stronger, even the rotating speed of impeller reduces, enough suction is also arranged, and fines is sucked in the lower chamber 5, and taken out of.

Claims

1, a kind of air sander structure-improved with dust-absorbing function, it mainly is to comprise impeller on a body, an air pressure motor, the lower chamber,, once impeller, a deflector, a gasket ring, a dividing plate seat and an emery wheel plate; Wherein body is provided with air inlet pipe and blast pipe; And the air pressure motor below is provided with a rotating shaft, and its top and sidewall are respectively equipped with an air admission hole and steam vent; Emery wheel plate and separate seat plate bottom are equipped with some open-works; It is characterized in that:

Lower chamber is a ducted body, and its inside is provided with a retainer ring, and the top is provided with a guide hole, its shell then with rubber case fit mutually, its centre feed hole is to communicate with the blast pipe port of body, and the upper limb of guide hole is provided with two circular-arc runners;

The steam vent of air pressure motor is to communicate with an end of a fine duct, and the port of blast pipe communicates with the other end of this fine duct, with when gases at high pressure flow into the port of blast pipe by exhaust outlet, fine duct, will produce a pull of vacuum;

Deflector is to place in the retainer ring of lower chamber, it comprises upper clip, lower clamping piece and lattice sheet, and the center of upper and lower intermediate plate is respectively equipped with open-work and reaches open-work down, and wherein upper and lower open-work is big than the sectional area of rotating shaft all, so can be fixed in the retainer ring, and can not rotate with rotating shaft; And upper clip is big than lower clamping piece, and go up open-work down open-work be big, flow between the lattice sheet by deflector is peripheral in order to air-flow, and inwardly by last open-work outflow;

Impeller all was made up of upper clip, lower clamping piece and some lattice sheets under last impeller reached; Last impeller is the top that is positioned at deflector, and impeller is the below that is positioned at deflector down, and upper and lower intermediate plate center is respectively equipped with open-work and reaches open-work down, wherein descends the last open-work of open-work big, upwards flows in order to air-flow in the gap of lattice sheet;

Be provided with a upper gasket between air pressure motor and last impeller, then be provided with a lower gasket between upper and lower impeller, can rotate with rotating shaft in order to upper and lower impeller;

By means of combination with upper member, when last, when following impeller rotates, can produce inspiratory flow on, with the space suction lower chamber of the fines below the emery wheel plate by its open-work and upper limb, fines can flow, with the space suction lower chamber of the fines below the emery wheel plate by its open-work and upper limb, fines can be by the following open-work inflow of impeller down, again via outwards flowing out between the lattice sheet, periphery by deflector flows into again, and flow out via the last open-work to the center between its lattice sheet, then the following open-work by last impeller flow between its mesh division board, fines is discharged by the periphery of last impeller, with can be via the continuous rotation of last impeller again, and will constantly be brought to by the fines that deflector flows near the guide hole of lower chamber, so that fines is constantly by means of the pull of vacuum sucking-off of blast pipe port.

2, the air sander structure-improved with dust-absorbing function as claimed in claim 1, it is characterized in that: the root of rotating shaft is to be hexagonal cylinder, and the last open-work of upper and lower impeller all is hexagon, so that the root of rotating shaft is passed, thereby can rotate with rotating shaft smoothly.