CN211990181U - Negative pressure dust keeper - Google Patents
Negative pressure dust keeper Download PDFInfo
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- CN211990181U CN211990181U CN202020472562.7U CN202020472562U CN211990181U CN 211990181 U CN211990181 U CN 211990181U CN 202020472562 U CN202020472562 U CN 202020472562U CN 211990181 U CN211990181 U CN 211990181U
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- dust
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- jet pipe
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Abstract
The utility model discloses a negative pressure dust keeper mainly relates to the charging box and removes general dirt technical field. Comprises a fan, a jet pipe and a three-way connecting piece; the air inlet of jet pipe is connected with the air outlet of fan, the air outlet department of jet pipe is connected with the first opening of tee junction spare, tee junction spare's second opening is connected with the workbin dust proof gas mouth, tee junction spare's third opening and dust removal pipe connection. The beneficial effects of the utility model reside in that: the negative pressure air suction principle is adopted to suck air in the box body away, so that air mixed with dust does not contact blades of the fan any more, the problem of dust overflow is solved, the fan is convenient to maintain, and the cost is low.
Description
Technical Field
The utility model relates to a charging box removes general dirt technical field, specifically is a negative pressure dust keeper.
Background
When powder (such as disinfectant) is added into the hopper/material box, dust can be splashed when the powder enters the box body, and meanwhile, the powder enters the box body to occupy space, so that air in the box body overflows, and meanwhile, the dust is brought out, and the health of operators is harmed.
The existing conventional solutions are: as shown in the attached figure 3 of the specification, a fan is arranged at the top of the box body, air in the box body is extracted, external air enters the box body through a charging opening, and dust overflow of the box body is reduced or even solved. Although the method can solve the problem of dust overflow, the dust can be sucked away by the fan together with air, and along with the prolonging of the service life, the dust can be attached to the blades of the fan and accumulated in the inner cavity of the fan, even some dust is corrosive and corrodes the blades, so that the working efficiency of the fan is reduced, the effect is further influenced, and the dust can overflow the box body. And maintenance of the fan is expensive and time consuming.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a negative pressure dust keeper, it is taken away the box air through the negative pressure principle of breathing in, makes the paddle that thoughtlessly has thoughtlessly the air of dust no longer contact fan, has not only solved the dust and has overflowed the problem, is convenient for maintain fan, low cost simultaneously.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme:
a negative pressure dustproof device comprises a fan, a jet pipe and a three-way connecting piece; the air inlet of jet pipe is connected with the air outlet of fan, the air outlet department of jet pipe is connected with the first opening of tee junction spare, tee junction spare's second opening is connected with the workbin dust proof gas mouth, tee junction spare's third opening and dust removal pipe connection.
And a one-way valve is arranged at the air outlet of the jet pipe.
The one-way valve is a stainless steel cover plate hinged at the air outlet.
The gas outlet is also provided with a magnetic sheet, and when the stainless steel cover plate is lapped to cover the gas outlet, the stainless steel cover plate is fixed by the magnetic force between the magnetic sheet and the stainless steel cover plate.
The diameter of the air inlet of the jet pipe is 2-5 times of that of the air outlet.
Contrast prior art, the beneficial effects of the utility model reside in that:
the fan is used for creating rapid airflow and is connected with the air inlet of the jet pipe, and the air outlet of the jet pipe is smaller than the air inlet, so that the flow velocity of the airflow ejected from the air outlet is larger. According to the fluid pressure principle, the pressure in the three-way connecting piece is reduced, and the pressure in the material box is higher than the pressure in the three-way connecting piece, so that negative pressure is formed. Therefore, the gas mixed with dust in the material box flows into the three-way connecting piece from the second through hole of the three-way connecting piece and then flows into the dust removal pipeline from the third through hole of the three-way connecting piece. The whole dust removal process is through the negative pressure principle of breathing in and take away the box internal air, makes the paddle that thoughtlessly has thoughtlessly the air of dust no longer contact fan, has not only solved the dust and has overflowed the problem, is convenient for maintain fan, low cost simultaneously.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Figure 2 is a using state diagram of the utility model.
Fig. 3 is a prior art diagram.
Reference numerals shown in the drawings:
1. a fan; 2. a jet pipe; 3. a tee joint connector; 4. an air inlet; 5. an air outlet; 6. a first port; 7. a second port; 8. a third port; 9. a dust removal pipeline; 10. a stainless steel cover sheet; 11. a magnetic sheet.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope defined in the present application.
The utility model relates to a negative pressure dustproof device, which comprises a main structure comprising a fan 1, a jet pipe 2 and a three-way connecting piece 3; the air inlet 4 of jet pipe 2 is connected with the air outlet of fan 1, 5 departments of the gas outlet of jet pipe 2 are connected with first opening 6 of tee junction spare 3, 4 diameters of the air inlet of jet pipe 2 are 2 ~ 5 times of 5 diameters of gas outlet. The second port 7 of three way connection spare 3 is connected with the workbin gas port that prevents dust, the third port 8 of three way connection spare 3 is connected with dust removal pipeline 9.
Methods of use and principles:
the fan 1 is used for creating rapid airflow and is connected with the air inlet 4 of the jet pipe 2, and the air outlet 5 of the jet pipe 2 is smaller than the air inlet 4, so that the flow rate of the airflow ejected from the air outlet 5 is larger. According to the fluid pressure principle, the pressure in the three-way connecting piece 3 is reduced, and the pressure in the material box is higher than the pressure in the three-way connecting piece 3, so that negative pressure is formed. Therefore, the gas mixed with the dust in the bin flows into the three-way connecting piece 3 from the second port 7 of the three-way connecting piece 3 and then flows into the dust removal pipeline 9 from the third port 8 of the three-way connecting piece 3. The air in the box body is pumped away in the whole dust removing process through a negative pressure air suction principle, so that the air mixed with dust is not contacted with the blades of the fan 1 any more, the problem of dust overflow is solved, the fan 1 is convenient to maintain, and the cost is low.
Further improvement:
in order to avoid the device idle, the dust enters into fan 1 or jet pipe 2 in, 5 departments of gas outlet of jet pipe 2 are equipped with check valve. The one-way valve is a stainless steel cover plate 10 hinged at the air outlet 5. And a magnetic sheet 11 is also arranged at the air outlet 5. When the device is idle, the stainless steel cover piece 10 is put on the air outlet 5, and the stainless steel cover piece 10 is fixed by the magnetic force between the magnetic sheet 11 and the stainless steel cover piece 10, so that the air outlet 5 is effectively sealed, and dust is prevented from entering the fan 1 or the jet pipe 2.
Claims (5)
1. The utility model provides a negative pressure dust keeper which characterized in that: comprises a fan (1), a jet pipe (2) and a three-way connecting piece (3); air inlet (4) of jet-flow pipe (2) are connected with the air outlet of fan (1), gas outlet (5) department of jet-flow pipe (2) is connected with first opening (6) of tee junction spare (3), second opening (7) and the workbin dustproof gas port of tee junction spare (3) are connected, third opening (8) and dust removal pipeline (9) of tee junction spare (3) are connected.
2. The negative-pressure dust-proof device of claim 1, wherein: and a one-way valve is arranged at the gas outlet (5) of the jet pipe (2).
3. The negative-pressure dust-proof device according to claim 2, characterized in that: the one-way valve is a stainless steel cover plate (10) hinged at the air outlet (5).
4. The negative-pressure dust-proof device according to claim 3, characterized in that: the gas outlet (5) is also provided with a magnetic sheet (11), and when the stainless steel cover sheet (10) is put on the gas outlet (5), the stainless steel cover sheet (10) is fixed by the magnetic force between the magnetic sheet (11) and the stainless steel cover sheet (10).
5. The negative-pressure dust-proof device according to claim 3, characterized in that: the diameter of the air inlet (4) of the jet pipe (2) is 2-5 times of that of the air outlet (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020472562.7U CN211990181U (en) | 2020-04-03 | 2020-04-03 | Negative pressure dust keeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020472562.7U CN211990181U (en) | 2020-04-03 | 2020-04-03 | Negative pressure dust keeper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211990181U true CN211990181U (en) | 2020-11-24 |
Family
ID=73404790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020472562.7U Active CN211990181U (en) | 2020-04-03 | 2020-04-03 | Negative pressure dust keeper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211990181U (en) |
-
2020
- 2020-04-03 CN CN202020472562.7U patent/CN211990181U/en active Active
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