CN109481979A - A kind of negative pressure filtration system - Google Patents
A kind of negative pressure filtration system Download PDFInfo
- Publication number
- CN109481979A CN109481979A CN201811470957.7A CN201811470957A CN109481979A CN 109481979 A CN109481979 A CN 109481979A CN 201811470957 A CN201811470957 A CN 201811470957A CN 109481979 A CN109481979 A CN 109481979A
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- liquid
- negative pressure
- pressure filtration
- net
- net liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention discloses a kind of negative pressure filtration systems, including coarse filter device and multiple negative pressure filtration devices；Coarse filter device is equipped with outlet tube；The input terminal of each negative pressure filtration device is respectively provided with connecting tube, and each connecting tube is connect with outlet tube respectively；The output end of each negative pressure filtration device is separately connected feed flow branch pipe, and each feed flow branch pipe is connect with general piping for liquids respectively；Negative pressure filtration device includes main casing；The intracorporal top of main casing is provided with dirty liquid cavity, and the intracorporal lower part of main casing is provided with net liquid cavity；Dirty liquid cavity is furnished with filter paper filter mechanism and endless filter belt filter mechanism；The external net liquid suction pump of net liquid cavity；Net liquid case is additionally provided with above main casing；The output end of net liquid suction pump is connect by net liquid delivery pipe with net liquid case；Net liquid case is furnished with floating oil collecting device.Negative pressure filtration system of the present invention not only has the function of debris removal, also has deoiling function, have the effect of preferably filtering；And the quantity of the freely-increased/decreased negative pressure filtration device to work online.
Description
Technical field
The present invention relates to a kind of negative pressure filtration systems.
Background technique
Lathe can generate metal fragment during the work time, and metal fragment can be exported with cutting fluid by lathe liquid outlet, defeated
The cutting fluid containing bits out is recycled, so as to reuse.Before reuse, need to contain the metal fragment filtering in bits cutting fluid
Fall.In addition, also being also required to filter out as far as possible containing oil, these oil such as machine tool guideway lubricating oil in cutting fluid.
Summary of the invention
The purpose of the present invention is to provide a kind of negative pressure filtration systems, not only have the function of debris removal, also have oil removing function
Can, there is better filter effect；And the quantity of the freely-increased/decreased negative pressure filtration device to work online.
To achieve the above object, the technical scheme is to design a kind of negative pressure filtration systems, comprising: coarse filtration dress
It sets, and multiple negative pressure filtration devices below coarse filter device；
The top of the coarse filter device is equipped with: for inputting the soiling solution inlet tube of the cutting fluid containing bits；The inside of coarse filter device
It is equipped with: carrying out the coarse filtration mechanism of coarse filtration to the cutting fluid containing bits of input；The bottom of coarse filter device is equipped with: thick for exporting
The horizontal outlet tube of filtered fluid；
The input terminal of each negative pressure filtration device is all located at the underface of outlet tube, and each negative pressure filtration device is along the extension of outlet tube
Direction is arranged successively；The input terminal of each negative pressure filtration device, which is respectively provided with, is vertically arranged connecting tube, the top of each connecting tube respectively and go out
Liquid pipe connection, the bottom end of each connecting tube is docked with the input terminal of corresponding negative pressure filtration device respectively, and is set respectively in each connecting tube
There are flow control valve and shut-off valve；The output end of each negative pressure filtration device is separately connected feed flow branch pipe, each feed flow branch pipe respectively with
General piping for liquids connection, and solution feed pump is respectively equipped on each feed flow branch pipe；
The negative pressure filtration device includes main casing；The intracorporal top of main casing is provided with dirty liquid cavity, and the intracorporal lower part of main casing is set
It is equipped with net liquid cavity；The input terminal of negative pressure filtration device is located at the top of dirty liquid cavity；Dirty liquid cavity equipped with filter paper filter mechanism and
Endless filter belt filter mechanism；The external net liquid suction pump of net liquid cavity；Net liquid case is additionally provided with above main casing；Net liquid suction pump
Output end connect with net liquid case by net liquid delivery pipe；Net liquid case is furnished with floating oil collecting device；
The floating oil collecting device includes in the net liquid case: bung hole upward be vertically arranged interior bucket, and be sleeved on interior bucket bucket wall
It is upper and bung hole is directed downwardly is vertically arranged outer barrel；The outer barrel heart coaxial with interior bucket, and outer barrel bucket wall is slidably matched with interior bucket bucket wall；Interior bucket bucket
The axial length of wall, less than the axial length of outer barrel bucket wall；The bucket bottom of outer barrel is kickboard, and kickboard is equipped with vertical through holes；One is perpendicular
Liquid suction pipe is set through the through-hole, and the outer diameter of liquid suction pipe is less than the internal diameter of the through-hole；The bottom end of liquid suction pipe and the bucket bottom of interior bucket connect
It connects, and interior bucket is by drawing liquid piping support；The tube wall of liquid suction pipe is equipped with liquid pumping hole, and liquid pumping hole is located inside interior bucket；Liquid suction pipe is also
Through the roof of net liquid case, and liquid suction pipe is supported by the roof of net liquid case；The top of liquid suction pipe is equipped with drawing liquid pump；Drawing liquid pump it is defeated
Outlet is connected to by liquid back pipe with dirty liquid cavity；And liquid back pipe and dirty liquid cavity engaging portion, positioned at the top of dirty liquid cavity；Net liquid
Delivery pipe is protruded into inside net liquid case by the roof of net liquid case, and net liquid delivery pipe extends to below interior bucket bung hole；The bottom of net liquid case
Equipped with liquid outlet, with the output end of the liquid outlet negative pressure filtration device.
Preferably, sealing ring is additionally provided between said tub bucket wall and interior bucket bucket wall, the outer peripheral surface of interior bucket bucket wall is equipped with
For installing the annular mounting groove of sealing ring, the annular mounting groove heart coaxial with interior bucket, sealing ring is fixed in annular mounting groove.
Preferably, the annular mounting groove is located at interior bucket top.
Preferably, the liquid suction pipe is equipped with check-valves, and check-valves is located inside interior bucket, and liquid pumping hole is located under check-valves
Side.
Preferably, the endless filter belt filter mechanism includes: endless filter belt, and driving circulating filtration V belt translation
Driving device.
Preferably, the filter paper filter mechanism includes: filter paper unwinding device, filter paper and waste paper wrap-up.
Preferably, the net liquid cavity is furnished with differential pressure transmitter device.
Advantages and advantages of the present invention are to provide a kind of negative pressure filtration system, not only has the function of debris removal, also
With deoiling function, there is better filter effect；And the quantity of the freely-increased/decreased negative pressure filtration device to work online.
The cutting fluid containing bits of lathe output first passes through soiling solution inlet tube input coarse filter device, carries out coarse filtration, coarse filtration
Liquid afterwards is exported to outlet tube, then is distributed by connecting tube to each negative pressure filtration device, and negative pressure filtration device is equipped with paper tape
Filter mechanism and endless filter belt filter mechanism can further filter the liquid of input, be filtered twice by above-mentioned, energy
Metal fragment in cutting fluid is filtered out with most of oil；The net liquid that each negative pressure filtration device is exported passes through feed flow branch pipe
It converges into general piping for liquids, the net liquid in general piping for liquids can input lathe liquid case reuse.Flow tune is respectively equipped in each connecting tube
Save valve and shut-off valve so that the input flow rate of each negative pressure filtration device can with independent control, it is freely-increased/decreased work online it is negative
The quantity of press filtering device.
Although negative pressure filtration device can filter out most of oil in cutting fluid；But the net liquid in net liquid case still can
Containing some oil, oil slick can be formed in net liquid case, if oil slick covers net liquid case liquid level, will affect cutting fluid in net liquid case
Performance, floating oil collecting device can further remove the oil slick in net liquid case.
When the liquid level in net liquid case reaches following height, open drawing liquid pump: net liquid case liquid level is higher than interior bucket bung hole；And it is net
The vertical interval of liquid case liquid level and interior bucket bung hole, greater than the thickness at outer barrel bucket bottom；And net liquid case liquid level is vertical with interior bucket bucket bottom
Spacing, less than the axial length of outer barrel bucket wall；
Hydraulically full in the space that outer barrel and inner barr is surrounded when drawing liquid pump is opened, kickboard (i.e. the bucket bottom of outer barrel) is in by liquid
The state that body is held up；
After drawing liquid pump is opened, drawing liquid pump continues to extract liquid from interior bucket by liquid suction pipe, and kickboard moves down, and net liquid case liquid level floats
Oil is continued to flow into outer barrel by the through-hole of kickboard top surface, realizes the recycling to net liquid case liquid-surface floating oil；The oil slick of recycling can be taken out
Liquid pipe is taken away, and is sent into dirty liquid cavity by liquid back pipe, can be by filter paper filter mechanism and endless filter belt filter mechanism mistake again
Filter.
Detailed description of the invention
Fig. 1 is the schematic diagram of negative pressure filtration system；
Fig. 2 is the schematic diagram of negative pressure filtration device.
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
The technical solution that the present invention embodies is:
As depicted in figs. 1 and 2, a kind of negative pressure filtration system, comprising: coarse filter device 100, and it is located at coarse filter device 100
Multiple negative pressure filtration devices 200 of lower section；
The top of the coarse filter device 100 is equipped with: for inputting the soiling solution inlet tube 101 of the cutting fluid containing bits；Coarse filter device
100 inside is equipped with: the coarse filtration mechanism (not shown) of coarse filtration is carried out to the cutting fluid containing bits of input；Coarse filter device
100 bottom is equipped with: for exporting the horizontal outlet tube 102 of liquid after coarse filtration；
The input terminal of each negative pressure filtration device 200 is all located at the underface of outlet tube 102, and each negative pressure filtration device 200 is along out
The extending direction of liquid pipe 102 is arranged successively；The input terminal of each negative pressure filtration device 200, which is respectively provided with, is vertically arranged connecting tube 201, respectively connects
The top of adapter tube 201 is connect with outlet tube 102 respectively, the bottom end of each connecting tube 201 respectively with corresponding negative pressure filtration device 200
Input terminal docking, and flow control valve (not shown) and shut-off valve (not shown) are respectively equipped in each connecting tube 201；
The output end of each negative pressure filtration device 200 is separately connected feed flow branch pipe 202, and each feed flow branch pipe 202 is respectively with general piping for liquids (in figure
It is not shown) connection, and solution feed pump 203 is respectively equipped on each feed flow branch pipe 202；
The negative pressure filtration device 200 includes main casing 1；Top in main casing 1 is provided with dirty liquid cavity 11, in main casing 1
Lower part be provided with net liquid cavity 12；The input terminal of negative pressure filtration device 200 is located at 11 top of dirty liquid cavity；Dirty liquid cavity 11 is matched
There are filter paper filter mechanism 2 and endless filter belt filter mechanism 3；The external net liquid suction pump 41 of net liquid cavity 12；The top of main casing 1
It is additionally provided with net liquid case 5；The output end of net liquid suction pump 41 is connect by net liquid delivery pipe 42 with net liquid case 5；Net liquid case 5 is equipped with floating
Oily collection device 6；
The floating oil collecting device 6 includes in the net liquid case 5: bung hole upward be vertically arranged interior bucket 61, and be sleeved on interior bucket
On 61 barrels of walls and bung hole is directed downwardly is vertically arranged outer barrel 62；The heart coaxial with interior bucket 61 of outer barrel 62, and 62 barrels of walls of outer barrel and 61 barrels of walls of interior bucket
It is slidably matched；The axial length of 61 barrels of walls of interior bucket, less than the axial length of 62 barrels of walls of outer barrel；The bucket bottom of outer barrel 62 is kickboard 63,
And kickboard 63 is equipped with vertical through holes 64；One is vertically arranged liquid suction pipe 65 through the through-hole 64, and the outer diameter of liquid suction pipe 65 is less than the through-hole
64 internal diameter；The bottom end of liquid suction pipe 65 is connect with the bucket bottom of interior bucket 61, and interior bucket 61 is supported by liquid suction pipe 65；The pipe of liquid suction pipe 65
Wall is equipped with liquid pumping hole (not shown), and liquid pumping hole is located inside interior bucket 61；Liquid suction pipe 65 also extends through the top of net liquid case 5
Wall, and liquid suction pipe 65 is supported by the roof of net liquid case 5；The top of liquid suction pipe 65 is equipped with drawing liquid pump 66；The output end of drawing liquid pump 66
It is connected to by liquid back pipe 7 with dirty liquid cavity 11；And liquid back pipe 7 and 11 engaging portion of dirty liquid cavity, positioned at the top of dirty liquid cavity 11；
Net liquid delivery pipe 42 is protruded into inside net liquid case 5 by the roof of net liquid case 5, and net liquid delivery pipe 42 extends to below 61 bung hole of interior bucket；
The bottom of net liquid case 5 is equipped with liquid outlet (not shown), with the output end of the liquid outlet negative pressure filtration device 200.
Preferably, sealing ring (not shown), interior bucket 61 are additionally provided between 61 barrels of walls of 62 barrels of walls of said tub and interior bucket
The outer peripheral surface of bucket wall is equipped with the annular mounting groove (not shown) for installing sealing ring, and annular mounting groove and interior bucket 61 are total
Axle center, sealing ring are fixed in annular mounting groove.
Preferably, the annular mounting groove is located at 61 top of interior bucket.
Preferably, the liquid suction pipe 65 is equipped with check-valves (not shown), and check-valves is located inside interior bucket 61, and takes out
Liquid mouth is located at below check-valves.
Preferably, the endless filter belt filter mechanism 3 includes: endless filter belt 31, and driving endless filter belt 31
The driving device of transmission.
Preferably, the filter paper filter mechanism 2 includes: filter paper unwinding device 21, filter paper 22 and waste paper wrap-up
23。
Preferably, the net liquid cavity 12 is furnished with differential pressure transmitter device 8.
Negative pressure filtration system of the present invention not only has the function of debris removal, also has deoiling function, has preferably filtering effect
Fruit；And the quantity of the freely-increased/decreased negative pressure filtration device to work online.
The cutting fluid containing bits of lathe output first passes through soiling solution inlet tube 101 and inputs coarse filter device 100, carries out coarse filtration,
Liquid after coarse filtration is exported to outlet tube 102, then passes through the distribution of connecting tube 201 to each negative pressure filtration device 200, negative pressure mistake
It filters device 200 and is equipped with paper tape filtering mechanism and endless filter belt filter mechanism 3, the liquid of input can further be filtered,
It is filtered, the metal fragment in cutting fluid can be filtered out with most of oil twice by above-mentioned；Each 200 institute of negative pressure filtration device
The net liquid of output is converged into general piping for liquids by feed flow branch pipe 202, and the net liquid in general piping for liquids can input lathe liquid case reuse.
It is respectively equipped with flow control valve and shut-off valve in each connecting tube 201, allows the input flow rate of each negative pressure filtration device 200 only
Vertical control, the quantity of the freely-increased/decreased negative pressure filtration device 200 to work online.
Although negative pressure filtration device 200 can filter out most of oil in cutting fluid；But the net liquid in net liquid case 5 is still
Some oil can so be contained, oil slick can be formed in net liquid case 5, if oil slick covers 5 liquid level of net liquid case, will affect net liquid case 5
The performance of middle cutting fluid, floating oil collecting device 6 can further remove the oil slick in net liquid case 5.
When the liquid level (not shown) in net liquid case 5 reaches following height, drawing liquid pump 66: 5 liquid level of net liquid case is opened
Higher than 61 bung hole of interior bucket；And the vertical interval of 5 liquid level of net liquid case and 61 bung hole of interior bucket, greater than the thickness at 62 barrels of bottoms of outer barrel；And it is net
The vertical interval of 5 liquid level of liquid case and 61 barrels of bottoms of interior bucket, less than the axial length of 62 barrels of walls of outer barrel；
When drawing liquid pump 66 is opened, hydraulically full, kickboard 63(, that is, outer barrel 62 bucket in the space that outer barrel 62 and interior bucket 61 are surrounded
Bottom) in the state held up by liquid；
After drawing liquid pump 66 is opened, drawing liquid pump 66 continues to extract liquid from interior bucket 61 by liquid suction pipe 65, and kickboard 63 moves down, net liquid
The oil slick of 5 liquid level of case is continued to flow into outer barrel 62 by the through-hole 64 of 63 top surface of kickboard, and 5 liquid-surface floating oil of net liquid case is returned in realization
It receives；The oil slick of recycling can be taken away by liquid suction pipe 65, and be sent into dirty liquid cavity 11 by liquid back pipe 7, can be by 2 He of filter paper filter mechanism
Endless filter belt filter mechanism 3 filters again.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of negative pressure filtration system characterized by comprising coarse filter device, and it is more below coarse filter device
A negative pressure filtration device；
The top of the coarse filter device is equipped with: for inputting the soiling solution inlet tube of the cutting fluid containing bits；The inside of coarse filter device
It is equipped with: carrying out the coarse filtration mechanism of coarse filtration to the cutting fluid containing bits of input；The bottom of coarse filter device is equipped with: thick for exporting
The horizontal outlet tube of filtered fluid；
The input terminal of each negative pressure filtration device is all located at the underface of outlet tube, and each negative pressure filtration device is along the extension of outlet tube
Direction is arranged successively；The input terminal of each negative pressure filtration device, which is respectively provided with, is vertically arranged connecting tube, the top of each connecting tube respectively and go out
Liquid pipe connection, the bottom end of each connecting tube is docked with the input terminal of corresponding negative pressure filtration device respectively, and is set respectively in each connecting tube
There are flow control valve and shut-off valve；The output end of each negative pressure filtration device is separately connected feed flow branch pipe, each feed flow branch pipe respectively with
General piping for liquids connection, and solution feed pump is respectively equipped on each feed flow branch pipe；
The negative pressure filtration device includes main casing；The intracorporal top of main casing is provided with dirty liquid cavity, and the intracorporal lower part of main casing is set
It is equipped with net liquid cavity；The input terminal of negative pressure filtration device is located at the top of dirty liquid cavity；Dirty liquid cavity equipped with filter paper filter mechanism and
Endless filter belt filter mechanism；The external net liquid suction pump of net liquid cavity；Net liquid case is additionally provided with above main casing；Net liquid suction pump
Output end connect with net liquid case by net liquid delivery pipe；Net liquid case is furnished with floating oil collecting device；
The floating oil collecting device includes in the net liquid case: bung hole upward be vertically arranged interior bucket, and be sleeved on interior bucket bucket wall
It is upper and bung hole is directed downwardly is vertically arranged outer barrel；The outer barrel heart coaxial with interior bucket, and outer barrel bucket wall is slidably matched with interior bucket bucket wall；Interior bucket bucket
The axial length of wall, less than the axial length of outer barrel bucket wall；The bucket bottom of outer barrel is kickboard, and kickboard is equipped with vertical through holes；One is perpendicular
Liquid suction pipe is set through the through-hole, and the outer diameter of liquid suction pipe is less than the internal diameter of the through-hole；The bottom end of liquid suction pipe and the bucket bottom of interior bucket connect
It connects, and interior bucket is by drawing liquid piping support；The tube wall of liquid suction pipe is equipped with liquid pumping hole, and liquid pumping hole is located inside interior bucket；Liquid suction pipe is also
Through the roof of net liquid case, and liquid suction pipe is supported by the roof of net liquid case；The top of liquid suction pipe is equipped with drawing liquid pump；Drawing liquid pump it is defeated
Outlet is connected to by liquid back pipe with dirty liquid cavity；And liquid back pipe and dirty liquid cavity engaging portion, positioned at the top of dirty liquid cavity；Net liquid
Delivery pipe is protruded into inside net liquid case by the roof of net liquid case, and net liquid delivery pipe extends to below interior bucket bung hole；The bottom of net liquid case
Equipped with liquid outlet, with the output end of the liquid outlet negative pressure filtration device.
2. negative pressure filtration system according to claim 1, which is characterized in that between said tub bucket wall and interior bucket bucket wall also
Equipped with sealing ring, the outer peripheral surface of interior bucket bucket wall is equipped with the annular mounting groove for installing sealing ring, annular mounting groove and interior bucket
The coaxial heart, sealing ring are fixed in annular mounting groove.
3. negative pressure filtration system according to claim 2, which is characterized in that the annular mounting groove is located at interior bucket top.
4. negative pressure filtration system according to claim 1, which is characterized in that the liquid suction pipe is equipped with check-valves, non-return
Valve is located inside interior bucket, and liquid pumping hole is located at below check-valves.
5. negative pressure filtration system according to claim 1, which is characterized in that the endless filter belt filter mechanism includes:
Endless filter belt, and the driving device of driving circulating filtration V belt translation.
6. negative pressure filtration system according to claim 1, which is characterized in that the filter paper filter mechanism includes: that filter paper is put
Winding apparatus, filter paper and waste paper wrap-up.
7. negative pressure filtration system according to claim 1, which is characterized in that the net liquid cavity is furnished with differential pressure transmitter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470957.7A CN109481979B (en) | 2018-12-04 | 2018-12-04 | Negative pressure filtration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811470957.7A CN109481979B (en) | 2018-12-04 | 2018-12-04 | Negative pressure filtration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109481979A true CN109481979A (en) | 2019-03-19 |
| CN109481979B CN109481979B (en) | 2021-03-26 |
Family
ID=65699216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811470957.7A Active CN109481979B (en) | 2018-12-04 | 2018-12-04 | Negative pressure filtration system |
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| Country | Link |
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| CN (1) | CN109481979B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734186A (en) * | 2019-11-08 | 2020-01-31 | 华辰精密装备（昆山）股份有限公司 | Roll grinder waste liquid centralized treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201088874Y (en) * | 2007-08-30 | 2008-07-23 | 中国石化股份胜利油田分公司孤岛采油厂 | Flotation fuel-discharging device of oil tank |
| CN204699484U (en) * | 2015-06-15 | 2015-10-14 | 安徽江淮汽车股份有限公司 | A kind of cutting fluid centralized processing system |
| CN105169788A (en) * | 2015-09-23 | 2015-12-23 | 烟台开发区博森科技发展有限公司 | Negative pressure circulating belt filter |
| CN204976184U (en) * | 2015-08-07 | 2016-01-20 | 东北石油大学 | Cooling liquid filtering device |
-
2018
- 2018-12-04 CN CN201811470957.7A patent/CN109481979B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201088874Y (en) * | 2007-08-30 | 2008-07-23 | 中国石化股份胜利油田分公司孤岛采油厂 | Flotation fuel-discharging device of oil tank |
| CN204699484U (en) * | 2015-06-15 | 2015-10-14 | 安徽江淮汽车股份有限公司 | A kind of cutting fluid centralized processing system |
| CN204976184U (en) * | 2015-08-07 | 2016-01-20 | 东北石油大学 | Cooling liquid filtering device |
| CN105169788A (en) * | 2015-09-23 | 2015-12-23 | 烟台开发区博森科技发展有限公司 | Negative pressure circulating belt filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734186A (en) * | 2019-11-08 | 2020-01-31 | 华辰精密装备（昆山）股份有限公司 | Roll grinder waste liquid centralized treatment system |
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| Publication number | Publication date |
|---|---|
| CN109481979B (en) | 2021-03-26 |
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