CN110624296A - High-efficient ore pulp dross removal mechanism - Google Patents
High-efficient ore pulp dross removal mechanism Download PDFInfo
- Publication number
- CN110624296A CN110624296A CN201810642030.0A CN201810642030A CN110624296A CN 110624296 A CN110624296 A CN 110624296A CN 201810642030 A CN201810642030 A CN 201810642030A CN 110624296 A CN110624296 A CN 110624296A
- Authority
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- China
- Prior art keywords
- box
- pulp
- deslagging
- overflow
- outlet
- 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.)
- Pending
Links
- 239000002002 slurry Substances 0.000 claims abstract description 24
- 238000009826 distribution Methods 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 4
- 239000003818 cinder Substances 0.000 claims 3
- 239000002893 slag Substances 0.000 abstract description 11
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 17
- 239000011440 grout Substances 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- -1 turf Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6484—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a translatory movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/92—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging filtrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention discloses a high-efficiency ore pulp deslagging device, which comprises a frame, an overflow box, a distribution box, a pulp inlet, an overflow pipe, a first filter sieve, a first pulp outlet and a stirrer, the bottom of the first slurry outlet is connected with a slurry conveying pipe, the end part of the slurry conveying pipe is communicated with the bottom of the distribution box, a deslagging box is arranged in the distribution box, a second filter screen is arranged in the middle of the inner side of the deslagging box, the bottom of the second filter sieve is provided with a deslagging mechanism, the top of one side of the deslagging box is provided with a slurry outlet, a third filter sieve is vertically arranged on the inner side of the pulp outlet, a second pulp outlet is arranged on the bottom of the outer side of the pulp outlet and penetrates through one side wall of the distribution box, the inside top of distributor box is equipped with the cylinder, the piston rod of cylinder run through the top of slagging-off case in the inside fixedly connected with clamp plate of slagging-off case. The invention has simple structure, convenient maintenance, high slag removal rate and large treatment capacity.
Description
Technical Field
The invention relates to the technical field of seats, in particular to a high-efficiency ore pulp deslagging device.
Background
In the process of mining ore, blasting operation is often required, and explosive fragments and wood, turf, rubber and other sundries which are burst by explosion enter a concentrating work area along with the ore. Before the mineral separation process, ores need to be ground into ore pulp through a ball mill, but the ores are difficult to grind in the ball mill due to the mixed flexible substances, so that certain influence is caused on the subsequent flow of mineral separation. For example, after the impurities enter the mineral separation production flow along with the ore pulp, the impurities are easy to block mineral separation equipment such as a strong magnetic machine medium box, a spiral flow groove, a pump and a valve, the service life of the equipment is influenced, the equipment is even damaged, and the production is influenced, so the impurities and the ore pulp must be separated before entering the mineral separation flow. However, the existing ore pulp slag remover generally has the problems of complex structure, difficult maintenance, low slag removal rate and small treatment capacity.
Disclosure of Invention
The invention provides a high-efficiency ore pulp deslagging device which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme: a high-efficiency ore pulp deslagging device comprises a frame, an overflow box and a distribution box, wherein the overflow box and the distribution box are arranged at the top of the frame, the top of the overflow box is provided with a pulp inlet, the top of one side of the overflow box is provided with an overflow pipe in a penetrating manner, the inside of the overflow box is transversely provided with a first filter sieve, the bottom of the overflow box is provided with a first pulp outlet, a stirrer is arranged in the first pulp outlet, the bottom of the first pulp outlet is connected with a pulp conveying pipe, the end part of the pulp conveying pipe is communicated with the bottom of the distribution box, the inside of the distribution box is provided with a deslagging box, the middle part of the inner side of the deslagging box is provided with a second filter sieve, the bottom of the second filter sieve is provided with a deslagging mechanism, the deslagging mechanism comprises a push rod motor fixed on the outer wall of one side of the deslagging box, the output end of the push rod motor penetrates through one side wall of the deslagging box and is fixedly connected with, the utility model discloses a slag removal box, including the distribution box, the upper end of mounting panel, the horizontal fixed mounting of upper end has first connecting plate, the tip fixed mounting of first connecting plate has first scraper blade, first scraper blade is hugged closely the bottom of second filter sieve, the horizontal fixed mounting of lower extreme of mounting panel has the second connecting plate, the tip fixed mounting of second connecting plate has the second scraper blade, the second scraper blade is hugged closely the inboard bottom of slag removal box, the grout outlet has been seted up at one side top of slag removal box, the inboard vertical third filter sieve that is equipped with of grout outlet, the outside bottom of grout outlet runs through a lateral wall of distribution box is equipped with second row grout outlet, the inboard top of distribution box is equipped with the cylinder, the piston rod of cylinder runs through the top of slag removal box in the inside fixedly connected with clamp plate of slag removal box.
As a preferable technical scheme of the invention, a slurry pump is arranged in the middle of the slurry conveying pipe.
As a preferable technical scheme of the invention, the bottom of one side of the deslagging box, which is far away from the push rod motor, is hinged with a sealing cover.
As a preferable aspect of the present invention, the length of the second connecting plate is greater than the length of the first connecting plate.
As a preferable technical solution of the present invention, longitudinal sections of the first squeegee and the second squeegee are both in a right trapezoid shape.
As a preferable technical scheme of the invention, the bottom of the slurry outlet is provided with a return pipe, and the return pipe is communicated with the bottom of one side of the deslagging box.
As a preferred technical scheme of the present invention, an electric control valve is arranged on the second slurry outlet.
Compared with the prior art, the invention provides an efficient ore pulp deslagging device, which has the following beneficial effects:
1. according to the invention, the overflow box, the pulp inlet, the overflow pipe, the first filter sieve, the stirrer, the first pulp outlet and the pulp conveying pipe are arranged, so that the pulp is input into the overflow box from the pulp inlet, the overflow pipe ensures the standard liquid level of the pulp, the pulp is primarily filtered by the first filter sieve, impurities with larger volume are filtered out, and the stirrer is arranged in the first pulp outlet to stir the pulp passing through the first pulp outlet, so that the pulp conveying pipe is prevented from being blocked.
2. According to the invention, the slurry conveying efficiency is improved by arranging the slurry pump, the deslagging box, the deslagging mechanism, the sealing plate and the second filter screen, when the deslagging mechanism is used, the push rod motor pushes the mounting plate to move forwards, the mounting plate drives the first connecting plate and the second connecting plate to move forwards, then the first scraper is driven to scrape impurities attached to the bottom of the second filter screen and the second scraper is driven to scrape impurities attached to the bottom of the deslagging box and collect the impurities through the second connecting plate, and the impurities can be cleaned by opening the sealing plate, so that no residual impurities are ensured.
3. According to the invention, the slurry outlet, the third filter screen, the backflow pipe, the air cylinder and the pressing plate are arranged, the air cylinder is started to drive the pressing plate to extrude downwards, so that ore slurry is extruded from the slurry outlet, impurities are filtered through the third filter screen, multiple filtering is realized, and the impurity removing effect is improved, and the deslagging rate is high.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the slag removal mechanism of the present invention;
FIG. 3 is a schematic cross-sectional view of an overflow tank of the present invention;
FIG. 4 is a schematic sectional view of the slag removal box of the present invention.
In the figure: 1. a frame; 2. an overflow tank; 3. a distribution box; 4. a pulp inlet; 5. an overflow pipe; 6. a first filter sieve; 7. a first discharge port; 8. a stirrer; 9. a pulp conveying pipe; 10. a deslagging box; 11. a second filter sieve; 12. a deslagging mechanism; 13. a push rod motor; 14. mounting a plate; 15. a first connecting plate; 16. a first squeegee; 17. a second connecting plate; 18. a second squeegee; 19. a pulp outlet; 20. a third filter sieve; 21. a second slurry outlet; 22. a cylinder; 23. pressing a plate; 24. a slurry pump; 25. sealing the cover; 26. a return pipe; 27. an electrically controlled valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings only to sub-describe the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, the definitions "first" and "second" are for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly including one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
Example (b): referring to fig. 1-4, the invention provides a technical scheme, and the high-efficiency ore pulp deslagging device comprises a frame 1, an overflow box 2 and a distribution box 3, wherein the overflow box 2 and the distribution box 3 are arranged at the top of the frame 1, a pulp inlet 4 is arranged at the top of the overflow box 2, an overflow pipe 5 is arranged at the top of one side of the overflow box 2 in a penetrating manner, a first filter sieve 6 is transversely arranged in the overflow box 2, a first pulp outlet 7 is arranged at the bottom of the overflow box 2, a stirrer 8 is arranged in the first pulp outlet 7, a pulp conveying pipe 9 is connected at the bottom of the first pulp outlet 7, the end part of the pulp conveying pipe 9 is communicated with the bottom of the distribution box 3, a deslagging box 10 is arranged in the distribution box 3, a second filter sieve 11 is arranged in the middle of the inner side of the deslagging box 10, a deslagging mechanism 12 is arranged at the bottom of the second filter sieve 11, the deslagging mechanism 12 comprises a push rod motor 13 fixed on the outer wall of one side of the deslagging box 10, and the output end of the push rod motor Plate 14, the horizontal fixed mounting in upper end of mounting panel 14 has first connecting plate 15, the tip fixed mounting of first connecting plate 15 has first scraper blade 16, the bottom of second filter sieve 11 is hugged closely to first scraper blade 16, the horizontal fixed mounting of lower extreme of mounting panel 14 has second connecting plate 17, the tip fixed mounting of second connecting plate 17 has second scraper blade 18, the inboard bottom of slagging-off case 10 is hugged closely to second scraper blade 18, grout outlet 19 has been seted up at one side top of slagging-off case 10, the inboard vertical third filter sieve 20 that is equipped with of grout outlet 19, a lateral wall that the outside bottom of grout outlet 19 runs through distributor box 3 is equipped with second row grout outlet 21, the inboard top of distributor box 3 is equipped with cylinder 22, the piston rod of cylinder 22 runs through the top of slagging-off case 10 in the inside fixedly connected with clamp plate 23 of slagging-off case 10.
In order to improve the slurry conveying efficiency, in the embodiment, it is preferable that a slurry pump 24 is provided in the middle of the slurry conveying pipe 9.
In order to facilitate cleaning of impurities at the bottom of the deslagging box, in the embodiment, preferably, the bottom of one side of the deslagging box 10, which is far away from the push rod motor 13, is hinged with a sealing cover 25.
In order to collect the impurities by using the second connecting plate, in the present embodiment, it is preferable that the length of the second connecting plate 17 is greater than that of the first connecting plate 15.
In order to facilitate scraping off the impurities attached to the bottom of the second filter screen and the slag removal box, in this embodiment, it is preferable that the longitudinal sections of the first scraper 16 and the second scraper 18 are both right-angled trapezoids.
In order to prevent the impurities from being removed incompletely, in the embodiment, it is preferable that a return pipe 26 is arranged at the bottom of the slurry outlet 21, and the return pipe 26 is communicated with one side bottom of the deslagging box 10.
In order to facilitate the control of the slurry outlet, in the present embodiment, an electric control valve 27 is preferably provided on the second slurry outlet 21.
The principle and the using process of the invention are that firstly, ore pulp is input into an overflow box 2 from a pulp inlet 4, an overflow pipe 5 ensures the standard liquid level, the ore pulp is primarily filtered by a first filter screen 6, sundries with larger volume are filtered, the ore pulp passing through a first pulp outlet 7 is stirred by arranging a stirrer 8 in the first pulp outlet 7, thereby preventing from blocking a pulp conveying pipe 9, the pulp conveying efficiency is improved by arranging a slurry pump 24, when a deslagging mechanism 12 is used, a push rod motor 13 pushes a mounting plate 14 to move forwards, the mounting plate 14 drives a first connecting plate 15 and a second connecting plate 17 to move forwards, then a first scraper 16 is driven to scrape sundries attached to the bottom of a second filter screen 11 and a second scraper 18 is driven to scrape sundries attached to the bottom of a deslagging box 10 and is collected by the second connecting plate 17, the sundries can be cleaned by opening a sealing plate 25, and no residual sundries are ensured, the air cylinder 22 is started to drive the pressing plate 23 to extrude downwards, so that ore pulp is extruded from the pulp outlet 19, impurities are filtered through the third filter sieve 20, multiple filtration is achieved, the impurity removing effect is improved, the deslagging rate is high, and finally the electric control valve 27 is opened, so that the ore pulp is discharged from the second pulp outlet 21.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (7)
1. The high-efficiency ore pulp deslagging device comprises a frame (1), an overflow box (2) and a distribution box (3), and is characterized in that the overflow box (2) and the distribution box (3) are arranged at the top of the frame (1), a pulp inlet (4) is arranged at the top of the overflow box (2), an overflow pipe (5) penetrates through the top of one side of the overflow box (2), a first filtering sieve (6) is transversely arranged in the overflow box (2), a first pulp outlet (7) is arranged at the bottom of the overflow box (2), a stirrer (8) is arranged in the first pulp outlet (7), a pulp conveying pipe (9) is connected to the bottom of the first pulp outlet (7), the end of the pulp conveying pipe (9) is communicated with the bottom of the distribution box (3), a deslagging box (10) is arranged in the distribution box (3), a second filtering sieve (11) is arranged in the middle of the inner side of the deslagging box (10), the bottom of second filter sieve (11) is equipped with deslagging mechanism (12), deslagging mechanism (12) including be fixed in push rod motor (13) of slagging box (10) one side outer wall, the output of push rod motor (13) runs through the lateral wall of slagging box (10) in slagging box (10) internal fixation is connected with mounting panel (14), the horizontal fixed mounting in upper end of mounting panel (14) has first connecting plate (15), the tip fixed mounting of first connecting plate (15) has first scraper blade (16), first scraper blade (16) hug closely the bottom of second filter sieve (11), the horizontal fixed mounting in lower extreme of mounting panel (14) has second connecting plate (17), the tip fixed mounting of second connecting plate (17) has second scraper blade (18), second scraper blade (18) hug closely the inboard bottom of slagging box (10), remove one side top of cinder box (10) and seted up out thick liquid mouth (19), the inboard of play thick liquid mouth (19) is vertical to be equipped with third filter sieve (20), the outside bottom of play thick liquid mouth (19) is run through a lateral wall of distributor box (3) is equipped with second row thick liquid mouth (21), the inboard top of distributor box (3) is equipped with cylinder (22), the piston rod of cylinder (22) runs through remove the top of cinder box (10) in remove the inside fixedly connected with clamp plate (23) of cinder box (10).
2. The high-efficiency pulp deslagging device according to claim 1, characterized in that a pulp pump (24) is arranged in the middle of the pulp conveying pipe (9).
3. The high-efficiency ore pulp deslagging device according to claim 1, wherein a sealing cover (25) is hinged to the bottom of one side of the deslagging box (10) far away from the push rod motor (13).
4. High efficiency pulp deslagging apparatus according to claim 1, wherein the length of said second connection plate (17) is greater than the length of said first connection plate (15).
5. The high-efficiency pulp deslagging device according to claim 1, characterized in that the longitudinal sections of the first scraper (16) and the second scraper (18) are right-angled trapezoids.
6. The high-efficiency ore pulp deslagging device according to claim 1, characterized in that a return pipe (26) is arranged at the bottom of the slurry outlet (21), and the return pipe (26) is communicated with one side bottom of the deslagging box (10).
7. The high-efficiency ore pulp deslagging device according to claim 1, characterized in that the second slurry outlet (21) is provided with an electric control valve (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810642030.0A CN110624296A (en) | 2018-06-21 | 2018-06-21 | High-efficient ore pulp dross removal mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810642030.0A CN110624296A (en) | 2018-06-21 | 2018-06-21 | High-efficient ore pulp dross removal mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110624296A true CN110624296A (en) | 2019-12-31 |
Family
ID=68966964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810642030.0A Pending CN110624296A (en) | 2018-06-21 | 2018-06-21 | High-efficient ore pulp dross removal mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110624296A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111715120A (en) * | 2020-06-30 | 2020-09-29 | 哈尔滨禄远科技有限公司 | Refreshing mosquito-repellent floral water and preparation process and preparation system thereof |
| CN112191005A (en) * | 2020-10-19 | 2021-01-08 | 高俊亭 | Underground drilling fluid filtering device |
-
2018
- 2018-06-21 CN CN201810642030.0A patent/CN110624296A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111715120A (en) * | 2020-06-30 | 2020-09-29 | 哈尔滨禄远科技有限公司 | Refreshing mosquito-repellent floral water and preparation process and preparation system thereof |
| CN111715120B (en) * | 2020-06-30 | 2022-10-28 | 合肥市贵谦信息科技有限公司 | Refreshing mosquito-repellent floral water and preparation process and preparation system thereof |
| CN112191005A (en) * | 2020-10-19 | 2021-01-08 | 高俊亭 | Underground drilling fluid filtering device |
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| PB01 | Publication | ||
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Application publication date: 20191231 |