CN203458326U - Negative pressure protection device of dust collector - Google Patents
Negative pressure protection device of dust collector Download PDFInfo
- Publication number
- CN203458326U CN203458326U CN201320442615.0U CN201320442615U CN203458326U CN 203458326 U CN203458326 U CN 203458326U CN 201320442615 U CN201320442615 U CN 201320442615U CN 203458326 U CN203458326 U CN 203458326U
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- air
- opening
- flow
- relief valve
- pressure relief
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- 239000000428 dust Substances 0.000 title claims abstract description 36
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 238000007599 discharging Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Abstract
The utility model relates to a negative pressure protection device of a dust collector. The dust collector comprises a dust collecting tank and a base. A fan is arranged on the base, a filtering mesh bag is arranged in the dust collecting tank, the filtering mesh bag is arranged between an air inlet of the dust collecting tank and an air inlet of the fan, an air pressure safety valve is arranged in the base, and the air pressure safety valve is provided with a second opening communicated with air in the outer environment or air discharged from the fan and a first opening communicated with the air in the filtering mesh bag. When the pressure of the first opening position is lower than a set value of the pressure of the second opening position, air flow of the first opening and air flow of the second opening are communicated with each other. A controller is arranged on the dust collector, and the controller and the fan are electrically connected with an air pressure safety valve. When the filtering mesh bag is not cleaned timely, the air in the filtering mesh bag can still be supplemented timely, and working conditions of the fan can stop worsening. The controller enables the fan to stop working, and damage of the fan under the extreme condition is avoided.
Description
Technical field
The utility model relates to a kind of dust catcher, espespecially a kind of negative-pressure protection device of dust catcher.
Background technology
Dust catcher is comprised of support and disposal box, and support is provided with a blower fan, is provided with a filtering mesh bag in disposal box, and this filtering mesh bag is between the air inlet of disposal box and the air inlet of blower fan.The air with dust sucking from the air inlet of disposal box, filters out described dust by filtering mesh bag, become relatively clean air, and described dust is attached on filtering mesh bag.At filtering mesh bag, can not get under in time clean condition, dust is cumulative, and the mesh of clogging filtering mesh bag makes to form between support and filtering mesh bag a relatively airtight space.The in the situation that of blower fan continuous operation, the air in this confined space constantly sucks and is discharged from from the air inlet of blower fan, and the air that the air sucking from air inlet and blower fan are discharged forms a pressure differential, and blower fan is operated under negative pressure state.
If cleaning filter net bag in time, blower fan continuous operation is in negative pressure state, this will cause the power consumption of blower fan to increase, make the more electric energy of dust catcher consumption, and be to utilize the mobile blower fan of cooling effect that provides of air amount cannot obtain cooling timely originally, under the lasting running of blower fan, its temperature must continue to rise, until damage blower fan.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of negative-pressure protection device of dust catcher, even if make in the situation that there is no timely cleaning filter net bag, the blower fan of dust catcher also can normally be worked.
The utility model proposes a kind of negative-pressure protection device of dust catcher; dust catcher comprises a disposal box and a support, and this support is provided with a blower fan, is provided with a filtering mesh bag in this disposal box; described filtering mesh bag is between the air inlet of disposal box and the air inlet of blower fan
On support, be provided with an air pressure relief valve, this air pressure relief valve has second opening communicating with air in external environment or the air of discharging from blower fan and first opening communicating with air in filtering mesh bag, when the pressure of the first opening part is during lower than the pressure settings of the second opening part, air pressure relief valve is unlocked and the second opening communicates with the air-flow of the first opening.
On dust catcher, be also provided with a controller, this controller is electrically connected to respectively with described blower fan and air pressure relief valve, and when air pressure relief valve is unlocked, described air pressure relief valve sends a signal and gives this controller, this controller and then blower fan is quit work.
Because the second opening of air pressure relief valve can be communicated with the first opening, when there is no timely cleaning filter net bag, the air in filtering mesh bag still can be supplemented in time, makes the condition of work of blower fan stop worsening; Further, controller can make blower fan quit work, and avoids the damage of blower fan under extreme case.
Accompanying drawing explanation
Fig. 1 is the cutaway view of negative-pressure protection device of the present utility model;
Fig. 2 is the cutaway view of amplification of a kind of embodiment air pressure relief valve of negative-pressure protection device in Fig. 1;
Fig. 3 is the structure chart of the another kind of embodiment air pressure relief valve of negative-pressure protection device;
Fig. 4 is the structure chart in embodiment air pressure relief valve when action of Fig. 3;
Fig. 5 is the stereogram of the block piece in the embodiment of Fig. 4; And
Fig. 6 is the structure chart of the third embodiment air pressure relief valve of negative-pressure protection device.
The specific embodiment
Referring to Fig. 1, in the utility model, dust catcher comprises a disposal box 50 and a support 60, and support 60 is provided with a blower fan 61, is provided with a filtering mesh bag 51 in disposal box 50, and filtering mesh bag 51 is between the air inlet 500 of disposal box 50 and the air inlet of blower fan 61.Air with dust is entered in disposal box 50 by air inlet 500, sees through after filtering mesh bag 51 filters and becomes relatively clean air, is entered, and be discharged in external environment condition via support 60 by the air inlet of blower fan 61.
On support 60, the place of contiguous blower fan 61 is provided with an air pressure relief valve 8, air pressure relief valve 8 has two openings, its first opening communicates with the air after cleaned in filtering mesh bag 51, its second opening communicates with the air in external environment or the air of discharging from blower fan 61, the second described opening and the first described opening are under normal conditions in obstructed state, but the atmospheric pressure in filtering mesh bag 51 is during lower than the pressure settings of the air in external environment or the air of discharging from blower fan 61, and air pressure relief valve is unlocked and allows the second opening communicate with the first opening.On dust catcher, be also provided with a controller (not shown), it is electrically connected to blower fan 61, and when air pressure relief valve 8 is unlocked, air pressure relief valve 8 sends a signal to controller, controller and then blower fan is quit work.
In conjunction with Fig. 2, in a kind of embodiment of air pressure relief valve 8, comprise a body 10, a spheroid 11, a spring 12 and a block piece 13.In this body 10, have the first flow 14 and one second runner 15 that communicate, these first flow 14 one end form a conical surface 16 and join with this second runner 15.These spheroid 11 contacts supply to block this second runner 15 on this conical surface 16.This spring 12 withstands on a side of this spheroid 11 to provide an elastic force to push this spheroid 11 to this conical surface 16, and this spring 12 is placed in the first flow 14 of this body 10, and is located at this spheroid 11 towards the another side of this conical surface 16.This block piece 13 is combined among this first flow 14, and peaks at the other end of this spring 12.So, when the pressure of the gas in the second runner 15 reaches the setting value that is enough to Compress Spring 12, just can promote this spheroid 11 to compress this spring 12, and then allow the gas in the second runner 15 flow in this first flow 14, to reach the object of one-way flow.When fluid is flowed into by this first flow 14, the elastic force of the pressure of this fluid and this spring 12 can make this spheroid 11 be pushed to this conical surface 16 and block this second runner 15, and then reaches the object that prevents adverse current.
Controller has two inputs, be electrically connected to body 10 and spheroid 11 respectively, its concrete mode can be that body 10 and spring 12 are electrically connected to two inputs respectively, its middle tube body 10 and spheroid 11 are conductor, spring 12 is also conductor, block piece 13 is insulator, can realize easily like this body 10 and spheroid 11 respectively with being electrically connected to of two inputs of controller 9.When spheroid 11 Compress Spring 12 of air pressure relief valve 8, the electrical connection of body 10 and spheroid 11 disconnects, and controller is received after this signal, and blower fan 61 is quit work.
Referring to Fig. 3, be the another kind of embodiment of air pressure relief valve; Comprise a body 20, a stopper rod 21, a spring 22 and a block piece 23, have the first flow 24 and one second runner 25 that communicate in this body 20, these first flow 24 one end form a conical surface 26 and join with this second runner 25.One end of stopper rod 21 forms a hemisphere contact and on this conical surface 26, supplies to block this second runner 25.Spring 22 is placed on this stopper rod 21 outsides, withstands this hemisphere so that this stopper rod 21 is pushed this conical surface 26 to, and block piece 23 in these stopper rod 21 outsides, and around has plural duct 231 air feed streams by (referring to Fig. 5) at block piece 23 medium pores with its central 230 borehole jacks.Block piece 23 is combined in first flow 24, and peaks at the other end of spring 22.So, when the pressure of the fluid in the second runner 25 reaches and is enough to compress the setting value of bullet 22, just can promote this stopper rod 21 to compress this spring 22, and then allow the fluid in the second runner 25 flow in this first flow 24, to reach the object of one-way flow.Simultaneously, at air pressure relief valve, by the outer end of first flow 24, be provided with a microswitch 27, when stopper rod 21 Compress Spring 22 of air pressure relief valve, the other end of stopper rod 21 compresses microswitch 27(referring to Fig. 4), provide a signal of telecommunication to controller, and then blower fan is quit work.
Referring to Fig. 6, be the third embodiment of air pressure relief valve, comprise a plastic casing 31, plastic feet 32, one rubber caps 33 and a spring 34; On plastic casing 31, there is one second opening 311, on plastic feet 32, there are one first opening 321, the second openings 311 and can communicate with the first opening 321.Rubber cap 33 is positioned at the side of being close to of this second opening 311, one end conflict plastic feet 32 of spring 34, and the other end compresses rubber cap 33 and blocks the second opening 311.So, when negative pressure produces, rubber cap 33 moves to the direction away from the second opening 311, the state that the second opening 311 communicates in air-flow with the first opening 321.Spring 34 is provided with a sheet metal 35 near one end of rubber cap 33, and plastic feet 32 is provided with a Metallic rod 36, and controller two ends are connected with Metallic rod 36 with sheet metal 35 respectively.When negative pressure produces, spring 34 is squeezed, and sheet metal 35 moves to Metallic rod 36 and is electrically connected to, and provides a signal of telecommunication to controller, and then blower fan is quit work.
Above-mentioned functions based on air pressure relief valve 8 and controller, at filtering mesh bag 51, can not get under in time clean condition, once the mesh of its filtering mesh bag 51 is stopped up by cumulative dust, make to form between support and filtering mesh bag a relatively airtight space, air in filtering mesh bag 51 can constantly be taken away and discharge by blower fan 61, make the air pressure of air inlet of blower fan 61 lower than the pressure of the air of its discharge, so air pressure relief valve 8 is unlocked, air in external environment or the air of discharging from blower fan 61 are passed to the first opening from the second opening, air in filtering mesh bag is constantly supplemented, the subnormal ambient of blower fan 61 work stops worsening like this, condition of work improves, further, air pressure relief valve 8 is given and controller one signal of telecommunication, and blower fan 61 is quit work.Make in the situation that there is no timely cleaning filter net bag, the blower fan of dust catcher also can be avoided damaging under extreme case.
Claims (8)
1. a negative-pressure protection device for dust catcher, dust catcher comprises a disposal box and a support, and this support is provided with a blower fan, is provided with a filtering mesh bag in this disposal box, and described filtering mesh bag, between the air inlet of disposal box and the air inlet of blower fan, is characterized in that:
On support, be provided with an air pressure relief valve, this air pressure relief valve has second opening communicating with air in external environment or the air of discharging from blower fan and first opening communicating with air in filtering mesh bag, when the pressure of the first opening part is during lower than the pressure settings of the second opening part, air pressure relief valve is unlocked and the second opening communicates with the air-flow of the first opening.
2. the negative-pressure protection device of dust catcher as claimed in claim 1; it is characterized in that being also provided with on dust catcher a controller; this controller is electrically connected to respectively with described blower fan and air pressure relief valve; when air pressure relief valve is unlocked; described air pressure relief valve sends a signal and gives this controller, this controller and then blower fan is quit work.
3. the negative-pressure protection device of dust catcher as claimed in claim 2, is characterized in that described air pressure relief valve comprises:
One body, has the first flow and one second runner that communicate in this body, this first flow is positioned at described the first opening inner side, and this second runner is positioned at described the second opening inner side, and this first flow one end forms a conical surface and this second runner joins;
One spheroid, this spheroid is placed in the first flow of this body, and contact supplies to block this second runner on this conical surface;
One spring, this spring is placed in the first flow of this body, and is located at this spheroid towards the another side of this conical surface;
One block piece, this block piece is combined in this first flow, and is positioned at this spring towards the other end of this spheroid.
4. the negative-pressure protection device of dust catcher as claimed in claim 3, is characterized in that described controller is electrically connected to described body and spheroid.
5. the negative-pressure protection device of dust catcher as claimed in claim 2, is characterized in that described air pressure relief valve comprises:
One body, has the first flow and one second runner that communicate in this body, this first flow is positioned at described the first opening inner side, and this second runner is positioned at described the second opening inner side, and this first flow one end forms a conical surface and this second runner joins;
One stopper rod, one end of this stopper rod forms a hemisphere contact and on this conical surface, supplies to block this second runner;
One spring, it is outside that this spring is placed on this stopper rod, withstands described hemisphere so that this stopper rod is pushed this conical surface to;
One block piece, outside in this stopper rod with its central borehole jack, and there is the duct that plural air feed stream passes through around at block piece medium pore, this block piece is combined in first flow, and peaks at the other end of this spring.
6. the negative-pressure protection device of dust catcher as claimed in claim 5, is characterized in that leaning on the outer end of first flow to be provided with a microswitch at air pressure relief valve, and the other end of stopper rod and this microswitch offset, and described controller is electrically connected to described microswitch.
7. the negative-pressure protection device of dust catcher as claimed in claim 2, is characterized in that described air pressure relief valve comprises:
One shell, has one second opening;
One base, has one first opening, and this first opening can communicate with this second opening;
One rubber cap, this rubber cap is positioned at the side of being close to of this second opening;
One spring, one end of this spring this base of conflicting, the other end compresses this rubber cap to block this first opening.
8. the negative-pressure protection device of dust catcher as claimed in claim 7, is characterized in that: described spring is provided with a sheet metal near one end of rubber cap, and described base is provided with a Metallic rod, and described controller two ends are electrically connected to described sheet metal and Metallic rod respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442615.0U CN203458326U (en) | 2013-07-24 | 2013-07-24 | Negative pressure protection device of dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320442615.0U CN203458326U (en) | 2013-07-24 | 2013-07-24 | Negative pressure protection device of dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203458326U true CN203458326U (en) | 2014-03-05 |
Family
ID=50170707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320442615.0U Expired - Fee Related CN203458326U (en) | 2013-07-24 | 2013-07-24 | Negative pressure protection device of dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203458326U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116140293A (en) * | 2023-02-06 | 2023-05-23 | 高邮市永发机械有限公司 | Processing equipment cleaning structure and processing equipment comprising same |
-
2013
- 2013-07-24 CN CN201320442615.0U patent/CN203458326U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116140293A (en) * | 2023-02-06 | 2023-05-23 | 高邮市永发机械有限公司 | Processing equipment cleaning structure and processing equipment comprising same |
| CN116140293B (en) * | 2023-02-06 | 2023-11-28 | 高邮市永发机械有限公司 | Processing equipment cleaning structure and processing equipment comprising same |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 |