CN2345319Y

CN2345319Y - Pneumatic grinding sander

Info

Publication number: CN2345319Y
Application number: CN98248180U
Authority: CN
Inventors: 孙永勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-11-18
Filing date: 1998-11-18
Publication date: 1999-10-27
Anticipated expiration: 2008-11-18

Abstract

The utility model relates to a pneumatic grinding sander which comprises an upper casing, a lower casing, an annular wall, an upper seal assembly and a lower seal assembly which are stationary, and a rotor, a plurality of vanes, a central shaft set and a grinding disc which are capable of rotating, wherein an air inlet port of the annular wall is arranged above an air exhaust port, and the air inlet port and the are exhaust port are separated by a middle baffling ring; the upper seal assembly is provided with an upper baffling ring and an upper cover body; the lower seal assembly is provided with a lower baffling ring and a lower cover body, and the outer side of a second bearing is provided with a dust-proof sleeve which is used for preventing the dust generated during the grinding process from contacting the second bearing. The utility model has the advantages of easy manufacture and assembly, difficult air leakage and long service life.

Description

Pneumatic abrasive sand ray machine

The utility model relates to a kind of burnishing device, particularly relates to a kind of pneumatic abrasive sand ray machine.

See also Fig. 1 to Fig. 3, existing pneumatic abrasive sand ray machine comprises a upper shell 11, and it has an air inlet 111, an exhaust outlet 112, a central space 113, an inlet channel 114 and an exhaust passage 115.One lower house 12 just can be fixed in the root edge of upper shell 11.One annular walls 13 has an air inlet port 131, an exhaust port 132 and a rotor room 133.Black box 14 has a stripper loop 141 and a upper cover body 142 on one on one.Once black box 15 has a stripper loop 151 and a lower cover 152.

One rotor 21 has several equally spaced blade tanks 211.22 in several blades are installed in respectively in aforesaid several blade tanks 211.One axis of centres group 23 includes an axis of centres 231 that combines with this rotor, is positioned at an eccentric block 232 and a downward opening eccentric dimple (not shown) of this lower house.One abrasive disk group 24 has the abrasive disk 242 that an abrasive disk axle 241 and is used for grinding the work object surface.

After pressure-air is imported by air inlet 111, enter by air inlet port 131, this rotor 21 is rotated, and this gas can be discharged at last through exhaust port 132 by this exhaust outlet 112.Because this rotor 21 can drive axis of centres group 23 and rotate, and then the eccentric relatively abrasive disk 242 of drive also produces irregular rotatablely moving again, therefore, can reach the function of grinding the working substance surface.

Yet, because having the very special last stripper loop of shape 141, the pneumatic abrasive sand ray machine of traditional type reaches stripper loop 151 down, particularly should go up stripper loop 141 extension two upper longitudinal part 141A downwards, and the end of each upper longitudinal part has the 141B of tooth portion.Same, this time stripper loop 151 extends upward longitudinal part 151A two times, and the end of longitudinal part 151A has the corresponding tooth 151B of portion under each.Therefore, no matter these elements with longitudinal part and tooth portion equal unusual trouble on making and in the assembling is time-consuming and cost is high.Again in use for some time, because rotor 21 long-term high speed rotating, add abrasive disk 242 irregular eccentric rotary, be easy to generate the gap between the 141B of tooth portion, 151B and cause the situation of gas leakage.

When grinding, be full of the irregular dust that has splashed in this lower house 12, therefore these dusts remain in second bearing, 26 places shown in Figure 7 easily, are easy to damage and rotor 21 are rotated have some setbacks.

Main purpose of the present utility model is, provides a kind of pneumatic abrasive sand ray machine for solving the above problems, and it has the structure of simplifying, and avoids the trouble of making and assembling.

Of the present utility model time a purpose is, a kind of pneumatic abrasive sand ray machine is provided, and makes to be difficult for gas leakage between its air inlet port and exhaust port.

A purpose more of the present utility model is, a kind of pneumatic abrasive sand ray machine is provided, owing to be provided with dirt-proof boot, so service life is longer.

The purpose of this utility model is realized by following technical scheme.

A kind of pneumatic abrasive sand ray machine, it comprises: a upper shell, its have one can an external source of high pressure air air inlet, be connected to extraneous exhaust outlet, a central space, is communicated with this air inlet is communicated with this exhaust outlet and this central space with the inlet channel and of this central space exhaust passage; One lower house is fixed in the root edge of this upper shell; One is located at the annular walls in this central space, and it has a pair of air inlet port, a pair of an exhaust port and a rotor room that should the exhaust passage that should inlet channel; Black box on one; Black box once; One rotor, this rotor have several blade tanks, and top, the end of this rotor are surrounded by this upper and lower black box; Several blades are to be installed in respectively in several blade tanks, are separated into several little spaces between this rotor and this annular walls and make; One axis of centres group, it has eccentric block, an and eccentric dimple that an axis of centres, is positioned at axis of centres bottom; One abrasive disk group, it has an abrasive disk axle and an abrasive disk; Wherein, this rotor is by a clutch shaft bearing and one second bearing and be hubbed on this on the black box and this lower seal assembly, and this abrasive disk group then is hubbed in the eccentric dimple of this axis of centres group by one the 3rd bearing; It is characterized in that the air inlet port of this annular walls is the top of being located at this exhaust port, and this air inlet port and exhaust port are intercepted by baffle ring in; Should go up black box and have a upper baffle ring and a upper cover body; This lower seal assembly has a lower baffle ring and a lower cover; This second bearing outside is provided with a dirt-proof boot and contacts this second bearing with the dust of being kicked up in preventing to grind.

The purpose of this utility model can also further realize by following technical measures.

Described dirt-proof boot has: an edge clipping portion, in order to be fixed in this lower seal assembly; One cylindrical portion; One oblique cone portion, its terminal opening just can be sealed this axis of centres.

Concrete structure of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Fig. 1 is the schematic appearance of the pneumatic abrasive sand ray machine commonly used.

Fig. 2 is the exploded perspective schematic diagram of the pneumatic abrasive sand ray machine commonly used.

Fig. 3 is the assembled sectional view of the pneumatic abrasive sand ray machine commonly used.

Fig. 4 A, Fig. 4 B are schematic appearance of the present utility model.

Fig. 5 A is a perspective exploded view of the present utility model.

Fig. 5 B is the partial sectional view of lower cover of the present utility model.

Fig. 6 is an assembled sectional view of the present utility model.

Fig. 7 is the assembled sectional view of induction part of the present utility model.

Fig. 8 is the assembled sectional view of exhaust portion of the present utility model.

See also Fig. 4 A, 4B and Fig. 5 to Fig. 7, the utility model is a pneumatic abrasive sand ray machine, it comprises: a upper shell 11, its have one can an external source of high pressure air air inlet 111, be connected to extraneous exhaust outlet 112, a central space 113, is communicated with this air inlet 111 is communicated with this exhaust outlet 112 and this central space 113 with the inlet channel 114 and of this central space 113 exhaust passage 115;

One lower house 12 is fixed in the root edge of this upper shell 11;

One is located at the annular walls 13 in this central space 113, and it has a pair of air inlet port 131, a pair of an exhaust port 132 and a rotor room 133 that should exhaust passage 115 that should inlet channel 114;

Black box 4 on one;

Once black box 5;

One rotor 21, it has several blade tanks 211, and the top of this rotor 21, the end, surrounded by upper and lower black box 4,5;

Several blades 22 are installed in respectively in several blade tanks 211, and make this

rotor

21 and 13 of annular walls be separated into several little spaces;

One axis of centres group 23, it has eccentric block 232, an and eccentric dimple 233 that an axis of centres 231, is positioned at the axis of centres 231 bottoms;

One abrasive disk group 24, it has an abrasive disk axle 241 and an abrasive disk 242;

Above-mentioned rotor 21 is by a clutch shaft bearing 25 and one second bearing 26 and be hubbed on this on the black box 4 and this lower seal assembly 5, and this abrasive disk group 24 then is hubbed in the eccentric dimple 233 of this axis of centres group 23 by one the 3rd bearing 27;

The air inlet port 131 of this annular walls 13 is tops of being located at exhaust port 132, and this air inlet port 131 and this exhaust port 132 are intercepted by baffle ring 6 in;

Should go up black box 4 and have a upper baffle ring 41 and a upper cover body 42;

This lower seal assembly 5 has a lower baffle ring 51 and a lower cover 52, and shown in Fig. 5 B, this lower cover 52 has one and snaps in annular groove 521;

These second bearing, 26 outsides are provided with a dirt-proof boot 7 and contact this second bearing 26 with the dust of being kicked up in preventing to grind.Detail structure about above-mentioned dirt-proof boot 7 is to include:

One edge clipping portion 71 can be fixed in this lower seal assembly 5, that is, snap in snapping in the annular groove 521 of this lower cover 52;

One cylindrical portion 72;

One oblique cone portion 73, its terminal opening just can be sealed the above-mentioned axis of centres 231, whereby, can prevent effectively that dust from entering this second bearing 26.

In practical operation, after pressure-air is imported by air inlet 111, enter by air inlet port 131, this rotor 21 is rotated, and this gas can be discharged at last through exhaust port 132 by this exhaust outlet 112.Because rotor 21 can drive axis of centres group 23 and rotate, and then the eccentric relatively abrasive disk 242 of drive makes it also to produce irregular rotatablely moving again, therefore, can reach the function of grinding the working substance surface.

By above-mentioned structure as can be seen, the mode that the utility model is simplified with the utmost point fixes annular walls 13 with upper baffle ring 41, middle baffle ring 6 and lower baffle ring 51.Secondly, baffle ring 6 is effectively isolated air inlet port 131 and exhaust port 132 in this, makes it have splendid leak preventing effect concurrently.In addition, because the existence of dirt-proof boot 7 is arranged, the dust of being kicked up in the work is difficult for entering in second bearing 26, so, can prolong service life of the present utility model.

Claims

1, a kind of pneumatic abrasive sand ray machine, it comprises: a upper shell, its have one can an external source of high pressure air air inlet, be connected to extraneous exhaust outlet, a central space, is communicated with this air inlet is communicated with this exhaust outlet and this central space with the inlet channel and of this central space exhaust passage;

One lower house is fixed in the root edge of this upper shell;

One is located at the annular walls in this central space, and it has a pair of air inlet port, a pair of an exhaust port and a rotor room that should the exhaust passage that should inlet channel;

Black box on one;

Black box once;

One rotor, this rotor have several blade tanks, and top, the end of this rotor are surrounded by this upper and lower black box;

Several blades are to be installed in respectively in several blade tanks, are separated into several little spaces between this rotor and this annular walls and make;

One axis of centres group, it has eccentric block, an and eccentric dimple that an axis of centres, is positioned at axis of centres bottom;

One abrasive disk group, it has an abrasive disk axle and an abrasive disk;

Wherein, this rotor is by a clutch shaft bearing and one second bearing and be hubbed on this on the black box and this lower seal assembly, and this abrasive disk group then is hubbed in the eccentric dimple of this axis of centres group by one the 3rd bearing;

It is characterized in that

The air inlet port of this annular walls is the top of being located at this exhaust port, and this air inlet port and exhaust port are intercepted by baffle ring in;

Should go up black box and have a upper baffle ring and a upper cover body;

This lower seal assembly has a lower baffle ring and a lower cover;

This second bearing outside is provided with a dirt-proof boot.

2, pneumatic abrasive sand ray machine according to claim 1 is characterized in that described dirt-proof boot has:

One edge clipping portion is in order to be fixed in this lower seal assembly;

One cylindrical portion;

One oblique cone portion, its terminal opening just can be sealed this axis of centres.