CN2347785Y - Chalk dust removing means for eraser - Google Patents
Chalk dust removing means for eraser Download PDFInfo
- Publication number
- CN2347785Y CN2347785Y CN 98239383 CN98239383U CN2347785Y CN 2347785 Y CN2347785 Y CN 2347785Y CN 98239383 CN98239383 CN 98239383 CN 98239383 U CN98239383 U CN 98239383U CN 2347785 Y CN2347785 Y CN 2347785Y
- Authority
- CN
- China
- Prior art keywords
- filter bag
- air inlet
- cloth filter
- utility
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Filtering Of Dispersed Particles In Gases (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
Abstract
The utility model belongs to the dust-removing field, particularly a dust removing device for a blackboard eraser for removing the chalk powder on the blackboard. The utility model is characterized in that a sponge filtering bag (11) is smaller than a cloth filtering bag (10) and is arranged in the cloth filtering bag (10). The cloth filtering bag (11) is arranged in an air inlet (21) of chalk powder, an upper cover (6) is provided with an air inlet (20) and a boss (19), a motor (4) is arranged under the air inlet (21) of chalk powder, and the fabric filtering bag (10) is provided with a rubber flexible pad (23).
Description
The utility model belongs to the dedusting field, is specially a kind of blackboard eraser dust arrester of removing chalk powder on the blackboard eraser.
Also all use chalk to write in China overwhelming majority school instructions at present, when erasing the board, chalk powder dances in the air in air, and teacher, students be in various degree suction chalk powder all, goes down so for a long time, and respiratory tract, lung all can be ill.Though existing at present blackboard and the pen that does not use chalk, because reason economically, use amount seldom can not be popularized.
The purpose of this utility model is to provide a kind of need not prize the blackboard eraser of cracking down evil force, a kind of blackboard eraser dust arrester that the chalk powder in the surrounding air is reduced significantly.
The purpose of this utility model is achieved in that sponge filter bag (11) is less than cloth filter bag (10) and in cloth filter bag (11), cloth filter bag (11) is in powder air inlet (21), air inlet (20), boss (19) are arranged on loam cake (6), and motor (4) is in powder air inlet (21) below.Rubber mount (23) is arranged on cloth filter bag (10).
Advantage of the present utility model is: simple in structure, with low cost, easy for operation, and can make chalk powder amplitude in air reduce very big.
Fig. 1 is the utility model structural principle A-A generalized section.
Fig. 2 is the utility model structural principle schematic top plan view.
Fig. 3 is the utility model principle schematic side view.
Fig. 4 is the utility model structural principle schematic diagram under the loam cake open mode.
Fig. 5 is the utility model middle cover structural principle schematic diagram.
Below in conjunction with accompanying drawing in detail the utility model most preferred embodiment is described in detail: sponge filter bag (11) is less than cloth filter bag (10) and in cloth filter bag (11), cloth filter bag (11) is in powder air inlet (21), air inlet (20), boss (19) are arranged, motor (4) (21) below the powder air inlet on loam cake (6).Rubber mount (23) is arranged on cloth filter bag (10).Loam cake (6) is to be buckled on the middle cover (5), and boss (19) has played a skeleton function, and it is that the middle part is not empty that loam cake (6) is buckled on the middle cover (5).After the utility model power switch (15) is connected, motor (4) work zone moving vane (7) rotates and produces attraction, when blackboard eraser is moved back and forth on boss (19), air inlet (20), dust is under the effect of gravity and suction, be inhaled into sponge filter bag (11), thinner dust then enter in the cloth filter bag (10) at last by sponge filter bag (11), and the wind-force of generation is after air outlet (22) discharge.Carrying hand (14) can carry away very easily.Magnet (9) is corresponding with the sheet metal in the loam cake (6), and when loam cake (6) was buckled on the middle cover (5), magnet (9) was pulled together with sheet metal.
Claims (2)
1, a kind of blackboard eraser dust arrester, it is by air outlet (1), housing (2), shock absorber (3), motor (4), middle cover (5), loam cake (6), blade (7), rubber ring (8), magnet (9), cloth filter bag (10), sponge filter bag (11), chalk chamber (12), power interface (13), carry hand (14), power switch (15), electric machine support (16), motor coil (17), supporting station (18), boss (19), air inlet (20), powder air inlet (21), air outlet (22), rubber mount (23) constitutes, it is characterized in that: sponge filter bag (11) is less than cloth filter bag (10) and in cloth filter bag (11), cloth filter bag (11) is in powder air inlet (21), air inlet (20) is arranged on loam cake (6), boss (19), motor (4) is in powder air inlet (21) below.
2, a kind of blackboard eraser dust arrester according to claim 1 is characterized in that: rubber mount (23) is arranged on cloth filter bag (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98239383 CN2347785Y (en) | 1998-11-16 | 1998-11-16 | Chalk dust removing means for eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98239383 CN2347785Y (en) | 1998-11-16 | 1998-11-16 | Chalk dust removing means for eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2347785Y true CN2347785Y (en) | 1999-11-10 |
Family
ID=33986764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98239383 Expired - Fee Related CN2347785Y (en) | 1998-11-16 | 1998-11-16 | Chalk dust removing means for eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2347785Y (en) |
-
1998
- 1998-11-16 CN CN 98239383 patent/CN2347785Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |