CN112356246A - Mechanical automatic cutting machine for gypsum lines - Google Patents
Mechanical automatic cutting machine for gypsum lines Download PDFInfo
- Publication number
- CN112356246A CN112356246A CN202011071247.4A CN202011071247A CN112356246A CN 112356246 A CN112356246 A CN 112356246A CN 202011071247 A CN202011071247 A CN 202011071247A CN 112356246 A CN112356246 A CN 112356246A
- Authority
- CN
- China
- Prior art keywords
- movable
- water
- cutting
- gypsum
- collecting box
- 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
- 238000005520 cutting process Methods 0.000 title claims abstract description 65
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 38
- 239000010440 gypsum Substances 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 238000001914 filtration Methods 0.000 claims abstract description 44
- 239000000428 dust Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract 2
- 230000001681 protective effect Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- 239000011505 plaster Substances 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 239000000779 smoke Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 10
- 231100000614 poison Toxicity 0.000 abstract description 4
- 230000007096 poisonous effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/04—Exhausting or laying dust
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The invention discloses a mechanical automatic cutting machine for gypsum lines, which relates to the technical field of gypsum production equipment and specifically comprises two side plates and a supporting rod for supporting, wherein the side plates are fixedly connected to the top of the supporting rod, a limiting wheel and a roller shaft are respectively arranged between the two side plates, the roller shaft is positioned under the limiting wheel, the top of the roller shaft is movably connected with a gypsum line, the side surface of the gypsum line is movably connected with the surface of the limiting wheel, the top of each side plate is fixedly connected with a collecting box, and the side surface of the inner wall of the collecting box is provided with a movable groove. Through setting up water pump, protection casing, collecting box and activity filtration, reached and carried out the dust fall to the cutting position and carry out the effect of collecting to the smoke and dust of collection, solved some gypsum strips and all used the cutting machine to cut, can produce poisonous and harmful smoke and dust at the cutting in-process, owing to do not have the device of handling to these smoke and dust, thereby these poisonous and harmful smoke and dust are inhaled by the staff very easily and are influenced the healthy problem.
Description
Technical Field
The invention relates to gypsum production equipment, in particular to a mechanical automatic cutting machine for gypsum lines.
Background
The plaster line is one of plaster products, is mostly used for interior decoration, and mainly comprises: the angle line, the flat line, pitch arc etc. the raw materials all are the gesso, the gesso mixes with water according to certain proportion and pours into the mould and add the fibre and increase toughness, and various decorative patterns are made to the mould of accessible difference and are strengthened pleasing to the eye degree, as long as the wealth is tall and thick, and self-defined pattern is also not the problem, and the gesso lines are mainly installed in the contained angle department of ceiling and wall, can pass through indoor pleasing to the eye degree of reinforcing such as water pipe electric wire in it.
Some gypsum strips that have now all use the cutting machine to cut, can produce poisonous and harmful smoke and dust at the cutting process, because do not have the device of handling these smoke and dust, consequently in the air of scattering very easily, thereby these poisonous and harmful smoke and dust are inhaled by the staff very easily and are influenced healthyly, lead to the cutting machine to use comparatively trouble.
Disclosure of Invention
The invention aims to provide a mechanical automatic cutting machine for gypsum lines, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a mechanical automatic cutting machine for gypsum lines comprises two side plates and a supporting rod for supporting, wherein the side plates are fixedly connected to the top of the supporting rod, a limiting wheel and a roller shaft are respectively arranged between the two side plates, the roller shaft is positioned under the limiting wheel, a gypsum line is movably connected to the top of the roller shaft, the side surface of the gypsum line is movably connected with the surface of the limiting wheel, a collecting box is fixedly connected to the top of the side plates, a movable groove is formed in the side surface of the inner wall of the collecting box, a movable filtering structure is movably connected to the inner side of the movable groove, the side surface of the movable filtering structure is movably connected with the bottom of the inner wall of the collecting box, a water pump is fixedly connected to one side of the side plates, a water outlet pipe is fixedly connected to the back of the collecting box, the top of the water outlet pipe, the top of water pump is provided with the raceway, and the fixed surface of raceway and mount is connected, and the one end fixed connection that the raceway kept away from the water pump is to leading to with the protection casing on the surface of protection casing.
As a further scheme of the invention: the equal quantity of spacing wheel and roller all is more than or equal to one.
As a further scheme of the invention: the opening position of the collecting box is positioned between the two roll shafts.
As a further scheme of the invention: the movable filtering structure comprises a movable frame, a side frame and a filter screen, wherein the movable frame is movably connected inside the movable groove, the side frame is fixedly connected to the top of the movable frame, and the filter screen is fixedly connected to the inner wall of the movable frame.
As a further scheme of the invention: the side of curb plate and movable frame all is provided with sealed cushion, sealed cushion respectively with the side of collecting box and the inner wall swing joint of activity groove.
As a further scheme of the invention: the front surface of the movable filtering structure is fixedly connected with a handle at the middle part, and the surface of the handle is wrapped with a protective layer.
As a still further scheme of the invention: the operation steps are as follows:
firstly, filling water into a collecting box, wherein the water surface cannot pass through a movable groove, then opening a water pump and a cutting body, and driving a cutting wheel to descend by the cutting body to cut a gypsum line;
step two, during cutting, the water in the collecting box is discharged by the water pump through the water outlet pipe, then the water is input into the protective cover by the water pump through the water conveying pipe, and the water flows to the cutting wheel and the cutting part through the protective cover to reduce dust at the position, so that dust generated by cutting is mixed with the water;
thirdly, the mixed water flows into the movable filtering structure through self gravity, dust is filtered through the filter screen, the filtered water reaches the bottom of the movable filtering structure through self gravity, and then the water pump pumps the filtered water out for repeated operation and dust fall;
and step four, cleaning the movable filtering structure regularly, pulling the handle manually, pulling the handle to the front side to drive the movable filtering structure to move out of the collecting box, cleaning a filter screen in the movable filtering structure, and after cleaning, reversely operating according to the steps to install the movable filtering structure.
Compared with the prior art, the invention has the beneficial effects that:
by arranging the water pump, the protective cover, the collecting box and the movable filtering structure, the cutting body drives the cutting wheel to cut the gypsum line, the water pump pumps out the water in the collecting box and conveys the water to the protective cover through the water outlet pipe and the water conveying pipe, the water flows to the cutting wheel and the cutting part through the protective cover, the dust is mixed at the cutting position, the mixed water flows to the movable filtering structure for filtering, the filtered water reaches the bottom of the movable filtering structure and is pumped out by the water pump again for repeated recycling, the operation is simple and convenient, the effects of dust fall at the cutting position and collection of collected smoke and dust are achieved, the problem that some gypsum strips are cut by the cutting machine is solved, toxic and harmful smoke is generated during the cutting process, and because no device for processing the smoke is arranged, the toxic and harmful smoke dust is very easy to be inhaled by workers, thereby affecting the health of the workers.
Through setting up activity groove and handle, through the handle with the activity filtration to positive pulling make its movable frame move to the front in the inside in activity groove to take out the inside of activity filtration from the collecting box and clear up it, reached the effect of being convenient for clear up the activity filtration.
Drawings
Fig. 1 is a front sectional view of a mechanical automatic cutting machine for gypsum line.
FIG. 2 is a left side sectional view of a collection box of the automatic mechanical cutting machine for gypsum lines.
Fig. 3 is an enlarged view of a structure a in fig. 2 of a mechanical automatic cutting machine for gypsum lines.
Fig. 4 is a top view of a mechanical automatic cutting machine for gypsum line.
As shown in the figure: 1. a side plate; 2. a support bar; 3. a limiting wheel; 4. a roll shaft; 5. a gypsum line; 6. a collection box; 7. a movable groove; 8. a movable filter structure; 81. a movable frame; 82. a side frame; 83. a filter screen; 9. a water pump; 10. a water outlet pipe; 11. a fixed mount; 12. cutting the body; 13. a protective cover; 14. a water delivery pipe; 15. sealing the soft cushion; 16. a handle.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 4, in the embodiment of the invention, a mechanical automatic cutting machine for gypsum lines comprises two side plates 1 and a supporting rod 2 for supporting, wherein the side plates 1 are fixedly connected to the top of the supporting rod 2 to support the two side plates 1, a limiting wheel 3 for limiting a gypsum line 5 and a roller shaft 4 for moving the gypsum line 5 are respectively arranged between the two side plates 1, the roller shaft 4 also fixes the two side plates 1, the side plates 1 also fix the roller shaft 4, the limiting wheels 3 and the roller shaft 4 are respectively more than or equal to one in number, the roller shaft 4 is positioned under the limiting wheel 3, the limiting wheels 3 and the roller shaft 4 are arranged at equal intervals, the roller shaft 4 enables the gypsum line 5 to move at a constant speed, the top of the roller shaft 4 is movably connected with the gypsum line 5, the side surface of the gypsum line 5 is movably connected with the surface of the limiting wheel 3, the top of the side plates 1 is fixedly, the collecting box 6 is fixed on the side plate 1 by bolts or welding, the collecting box 6 is used for containing water and collecting the water mixed with smoke dust, because the top opening of the collecting box 6 is longer than the distance between the two roller shafts 4, and the opening position of the collecting box 6 is positioned between the two roller shafts 4, the water mixed with smoke dust can easily fall into the collecting box 6 by gravity, the mixed water is not easy to disperse outside the collecting box 6, the position of the cutting wheel is protected by the protective cover 13 when the cutting wheel rotates at a high speed, the mixed water charge cutting wheel is placed to splash to the outside, the water charge cutting wheel can only fall into the protective cover 13 and fall into the collecting box 6 by self gravity, the side surface of the inner wall of the collecting box 6 is provided with a movable groove 7 for providing movement and positioning space, the movable filtering structure 8 for filtering the mixed water is movably connected inside the movable groove 7, the movable filtering structure 8 comprises a movable frame 81, a side frame 82 and a filter screen 83, the movable frame 81 is movably connected inside the movable groove 7, the movable groove 7 provides a stable moving area for the movable filtering structure 8 and is convenient to position so that the movable filtering structure can only be stabilized at the position, the side frame 82 is fixedly connected at the top of the movable frame 81, the filter screen 83 is fixedly connected at the inner wall of the movable frame 81, the side plates 1 and the side surfaces of the movable frame 81 are both provided with a sealing cushion 15 which seals the connecting position of the movable groove 7 and the inner wall of the collecting box 6, so that mixed water is not easy to fall between the movable filtering structure 8 and the collecting box 6, the sealing cushion 15 is respectively movably connected with the side surface of the collecting box 6 and the inner wall of the movable groove 7, the side surface of the movable filtering structure 8 is movably connected with the bottom of the inner wall of the collecting box 6, and a handle 16 for pulling is fixedly connected at, the handle 16 is covered with a protective layer for protecting the hand.
One side of the side plate 1 is fixedly connected with a water pump 9, power is supplied by an external power supply, the power supply mode of the cutting machine is the same, the back surface of the collecting box 6 is fixedly connected with a water outlet pipe 10 for outputting water, the top of the water outlet pipe 10 is fixedly connected with the bottom of the water pump 9, the bottom of the side plate 1 is provided with a fixing frame 11 for fixing a cutting body 12, the bottom of the fixing frame 11 is fixedly connected with the cutting body 12, the bottom of the cutting body 12 is provided with a protective cover 13 corresponding to the position of the gear, this protection casing 13 protects the cutting wheel, prevents that water from splashing, and the radius that highly is greater than the cutting wheel of protection casing 13, better water prevent to splash, and the top of water pump 9 is provided with the raceway 14 with the delivery water, and the fixed surface of raceway 14 and mount 11 is connected, and one end fixed connection that water pump 9 was kept away from to raceway 14 is to leading to with protection casing 13 on the surface of protection casing 13.
The operation steps are as follows:
firstly, filling water into the collecting box 6, wherein the water surface cannot cover the movable groove, then opening the water pump 9 and the cutting body 12, and driving the cutting body 12 to drive the cutting wheel to descend to cut the gypsum line;
step two, during cutting, the water in the collecting box 6 is discharged by the water pump 9 through the water outlet pipe 10, then the water is input into the protective cover 13 by the water pump 9 through the water conveying pipe 14, and the water flows to the cutting wheel and the cutting part through the protective cover 13 to perform dust fall on the position, so that dust generated by cutting is mixed with the water;
step three, the mixed water flows into the movable filtering structure 8 through self gravity, dust is filtered through the filter screen 83, the filtered water reaches the bottom of the movable filtering structure 8 through self gravity, and then the water pump 9 pumps the filtered water out to repeatedly operate and fall dust;
and step four, cleaning the movable filtering structure 8 regularly, pulling the handle 16 manually, pulling the handle 16 to the front side to drive the movable filtering structure 8 to move out of the collecting box 6, cleaning the filtering net 83 in the movable filtering structure 8, and mounting the movable filtering structure by performing reverse operation according to the steps after cleaning.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention without departing from the spirit and scope of the invention.
Claims (7)
1. A mechanical automatic cutting machine for gypsum lines comprises two side plates (1) and a supporting rod (2) used for supporting, and is characterized in that the side plates (1) are fixedly connected to the top of the supporting rod (2), a limiting wheel (3) and a roller shaft (4) are respectively arranged between the two side plates (1), the roller shaft (4) is positioned under the limiting wheel (3), the top of the roller shaft (4) is movably connected with a gypsum line (5), the side surface of the gypsum line (5) is movably connected with the surface of the limiting wheel (3), the top of the side plate (1) is fixedly connected with a collecting box (6), the side surface of the inner wall of the collecting box (6) is provided with a movable groove (7), the movable groove (7) is movably connected with a movable filtering structure (8) inside, the side surface of the movable filtering structure (8) is movably connected with the bottom of the inner wall of the collecting box (6), one side of, the back fixedly connected with outlet pipe (10) of collecting box (6), the top of outlet pipe (10) and the bottom fixed connection of water pump (9), the bottom of curb plate (1) is provided with mount (11), mount (11) bottom fixedly connected with cuts body (12), the position department that the bottom of cutting body (12) corresponds the gear is provided with protection casing (13), the top of water pump (9) is provided with raceway (14), the surface of raceway (14) and the fixed surface of mount (11) are connected, one end fixed connection that raceway (14) kept away from water pump (9) is to leading to with protection casing (13) on the surface of protection casing (13).
2. The automatic mechanical cutting machine for gypsum line according to claim 1, wherein the number of the limiting wheels (3) and the number of the roll shafts (4) are both more than or equal to one.
3. The machine for the mechanical automatic cutting of plaster line according to claim 1, characterized in that the opening position of the collection box (6) is located between two rollers (4).
4. The mechanical automatic cutting machine for gypsum lines as claimed in claim 1, wherein the movable filtering structure (8) comprises a movable frame (81), a side frame (82) and a filtering net (83), the movable frame (81) is movably connected inside the movable groove (7), the side frame (82) is fixedly connected to the top of the movable frame (81), and the filtering net (83) is fixedly connected to the inner wall of the movable frame (81).
5. The automatic mechanical cutting machine for gypsum line strips as claimed in claim 4, wherein the side plates (1) and the side surfaces of the movable frame (81) are respectively provided with a sealing cushion (15), and the sealing cushions (15) are respectively movably connected with the side surfaces of the collection box (6) and the inner wall of the movable groove (7).
6. The automatic mechanical cutting machine for gypsum line of claim 4, wherein the handle (16) is fixedly connected to the front surface of the movable filtering structure (8) at the middle position, and the surface of the handle (16) is covered with a protective layer.
7. The use method of the automatic mechanical cutting machine for gypsum line according to claim 1, characterized in that the operation steps are as follows:
firstly, filling water into a collection box (6), wherein the water surface cannot cover a movable groove, then opening a water pump (9) and a cutting body (12), and driving a cutting wheel to descend by the cutting body (12) to cut gypsum lines;
step two, during cutting, the water in the collecting box (6) is discharged by the water pump (9) through the water outlet pipe (10), then the water is input into the protective cover (13) by the water pump (9) through the water conveying pipe (14), and the water flows to the cutting wheel and the cutting part through the protective cover (13) to perform dust fall on the position, so that dust generated by cutting is mixed with the water;
thirdly, the mixed water flows into the movable filtering structure (8) through self gravity, dust is filtered through the filter screen (83), the filtered water reaches the bottom of the movable filtering structure (8) through self gravity, and then the water pump (9) pumps the filtered water out for repeated operation and dust fall;
and step four, cleaning the movable filtering structure (8) periodically, manually pulling the handle (16), pulling the handle (16) to the front side to drive the movable filtering structure (8) to move out of the collecting box (6), cleaning a filter screen (83) in the movable filtering structure (8), and after cleaning, reversely operating according to the steps to install the movable filtering structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071247.4A CN112356246A (en) | 2020-10-09 | 2020-10-09 | Mechanical automatic cutting machine for gypsum lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071247.4A CN112356246A (en) | 2020-10-09 | 2020-10-09 | Mechanical automatic cutting machine for gypsum lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112356246A true CN112356246A (en) | 2021-02-12 |
Family
ID=74507097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011071247.4A Pending CN112356246A (en) | 2020-10-09 | 2020-10-09 | Mechanical automatic cutting machine for gypsum lines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112356246A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109333660A (en) * | 2018-11-20 | 2019-02-15 | 大连智宏科技咨询有限公司 | A kind of wooden piece processing cutting machine and method |
| CN209920263U (en) * | 2019-04-02 | 2020-01-10 | 贵州省贞丰县安达石业民族工艺有限责任公司 | Stone material cutting device with dustproof function |
| CN210500878U (en) * | 2019-07-21 | 2020-05-12 | 樊斌峰 | Cutting device with dust removal function |
| CN210939966U (en) * | 2019-09-17 | 2020-07-07 | 海南世嘉亮科技有限公司 | Automatic forming cutting machine for building gypsum board |
| CN111605087A (en) * | 2018-12-13 | 2020-09-01 | 淄博晶鑫机电制造有限公司 | Gypsum board cutting device |
| CN211419836U (en) * | 2019-12-03 | 2020-09-04 | 深圳市锦煌科技有限公司 | Industrial circulating water supply sewage filters environmental protection equipment |
-
2020
- 2020-10-09 CN CN202011071247.4A patent/CN112356246A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109333660A (en) * | 2018-11-20 | 2019-02-15 | 大连智宏科技咨询有限公司 | A kind of wooden piece processing cutting machine and method |
| CN111605087A (en) * | 2018-12-13 | 2020-09-01 | 淄博晶鑫机电制造有限公司 | Gypsum board cutting device |
| CN209920263U (en) * | 2019-04-02 | 2020-01-10 | 贵州省贞丰县安达石业民族工艺有限责任公司 | Stone material cutting device with dustproof function |
| CN210500878U (en) * | 2019-07-21 | 2020-05-12 | 樊斌峰 | Cutting device with dust removal function |
| CN210939966U (en) * | 2019-09-17 | 2020-07-07 | 海南世嘉亮科技有限公司 | Automatic forming cutting machine for building gypsum board |
| CN211419836U (en) * | 2019-12-03 | 2020-09-04 | 深圳市锦煌科技有限公司 | Industrial circulating water supply sewage filters environmental protection equipment |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210212 |