CN111318235A - Melting device for new material capable of fully stirring - Google Patents
Melting device for new material capable of fully stirring Download PDFInfo
- Publication number
- CN111318235A CN111318235A CN202010232362.9A CN202010232362A CN111318235A CN 111318235 A CN111318235 A CN 111318235A CN 202010232362 A CN202010232362 A CN 202010232362A CN 111318235 A CN111318235 A CN 111318235A
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- melting
- opening
- air
- fixedly arranged
- stirring
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- 238000002844 melting Methods 0.000 title claims abstract description 79
- 230000008018 melting Effects 0.000 title claims abstract description 79
- 239000000463 material Substances 0.000 title claims abstract description 58
- 238000003756 stirring Methods 0.000 title claims abstract description 58
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 7
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/005—Fusing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
- B01F29/82—Mixers with rotating receptacles rotating about a substantially vertical axis the receptacle comprising a rotary part, e.g. the bottom, and a stationary part, e.g. the wall, with optional use of a stirrer; the receptacle comprising parts moving in opposite directions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F29/00—Mixers with rotating receptacles
- B01F29/80—Mixers with rotating receptacles rotating about a substantially vertical axis
- B01F29/83—Mixers with rotating receptacles rotating about a substantially vertical axis with rotary paddles or arms, e.g. movable out of the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/91—Heating or cooling systems using gas or liquid injected into the material, e.g. using liquefied carbon dioxide or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a melting device for new materials capable of being fully stirred, which comprises a box body, wherein a melting box is rotationally connected in the box body, a groove is fixedly arranged at the top of the melting box, the top of the melting box is slidably connected with a cover plate through the groove, an air blowing device for leading hot gas to the melting box is arranged on the left side of the cover plate, a material introducing device for introducing materials is arranged on the right side of the box body, stirring devices for stirring the materials are arranged in the cover plate and the melting box, and a filtering device for discharging the melted materials is arranged at the bottom of the melting box.
Description
Technical Field
The invention relates to the field of new material processing, in particular to a melting device for new materials, which can be fully stirred.
Background
With the progress of the times, the development of new material processing technology is not slow, and the new material refers to a structural material with excellent performance and a functional material with special properties which are newly developed or are being developed;
the processing of the new material needs to be melted at high temperature, and the distribution of the interior of the new material can be improved only by mixing and stirring the melted material, so that various properties of the new material are improved, and the step of modernization development is improved.
Disclosure of Invention
The technical problem is as follows: the conventional new materials have many problems in processing, including insufficient stirring and complicated melting.
In order to solve the problems, the embodiment designs a melting device for new materials capable of being fully stirred, the melting device for new materials capable of being fully stirred comprises a box body, a working space is arranged in the box body, a melting box is arranged in the working space, two annular upper wheel grooves are arranged at the bottom of the melting box, rotating shafts are rotatably connected on the left inner wall and the right inner wall of the upper wheel groove, pulleys are fixedly arranged on the rotating shafts, lower wheel grooves capable of allowing the pulleys to enter are arranged on the bottom wall of the working space, the pulleys are slidably connected in the lower wheel grooves through the pulleys, so that the rotatability of the melting box is realized, first rotating motors which are bilaterally symmetrical are fixedly arranged on two sides of the bottom wall of the working space, a gear shaft is fixedly arranged on the upper side of each first rotating motor, a gear wheel is fixedly arranged on the gear shaft, and a rack plate is fixedly arranged on, the melting box is characterized in that the gear wheel is meshed and connected with the rack plate, the first rotating motor is started to drive the gear wheel to rotate, so that the rotation control of the melting box by the first rotating motor is realized through the meshed connection of the gear wheel and the rack plate, a groove is fixedly arranged at the top of the melting box, a cover plate is connected with the groove in a sliding manner, air cylinders are fixedly arranged in the top wall of the working space in a bilateral symmetry manner, air cylinder rods are arranged between the air cylinders and the cover plate, the control of the cover plate is realized through the air cylinders when the air pressure of the melting box is too high, the cover plate does not rotate along with the rotation of the melting box, heating plates for heating air flow are fixedly arranged in the side wall of the box body, an air blast device capable of absorbing hot air and leading to the melting box is arranged at the left side of the cover plate, and stirring devices for stirring various processing materials are arranged in the cover plate and the melting tank, and a filtering device for discharging the melted materials is arranged at the bottom of the melting tank.
Wherein, the air-blast device including set firmly in the mount of workspace left side roof, the mount downside is equipped with first opening, the apron left side is equipped with the second opening, first opening with air pipe has set firmly between the second opening, air pipe one side opening internal set is used for inhaling steam air-blower in the air pipe, air pipe another side opening internal set is used for discharging steam to the air pump in the fusion box, the air pump downside sets firmly the air exit that is used for diffusion hot gas exhaust area.
Wherein, the material lets in the device including locating the third opening on box top right side, set firmly in the third opening and stretch out outside the box and run through the material pouring pipe of apron, the material pouring pipe top sets firmly the funnel that is used for enlarging the opening and prevents extravagant material, set firmly in the funnel and be used for filtering the filter screen that coarse granule reduces the stirring burden.
The stirring device comprises a fourth opening arranged in the middle of the cover plate, a second rotating motor fixed on the cover plate is arranged on the upper side of the fourth opening, a stirring shaft connected to the bottom wall of the melting tank in a rotating mode through the fourth opening is fixedly arranged on the lower side of the second rotating motor, a limiting plate used for stabilizing the position of the ascending stirring shaft is fixedly arranged on the lower side of the cover plate, five auxiliary plates are connected onto the stirring shaft in a sliding mode, a connecting frame is fixedly arranged between the middle three auxiliary plates and the melting tank, a reversing device and a forward rotating device controlled by the second rotating motor are respectively arranged between the adjacent auxiliary plates, and the reversing device and the forward rotating device are not adjacent to the same device.
The reversing device comprises an inner gear which is rotatably connected between the auxiliary plates, reversing stirring blades which are distributed in a ninety-degree rotating mode are fixedly arranged on the outer side face of the inner gear, a gear space is arranged in the inner gear, an auxiliary shaft which is rotatably connected between the auxiliary plates is arranged in the gear space, a shaft gear is fixedly arranged on the stirring shaft, an idler wheel which is connected with the shaft gear and the inner gear in a meshed mode is fixedly arranged on the auxiliary shaft, and the second rotating motor is started to control the stirring shaft to rotate.
The corotation device comprises blade columns fixedly arranged on the stirring shaft, and corotation stirring blades are fixedly arranged on the side surfaces of the blade columns in an annular distribution mode.
The filtering device comprises a fourth opening arranged at the bottom of the box body, a main outlet is arranged in the fourth opening, a fork channel which is distributed in an annular shape is fixedly arranged on the upper side of the main outlet, the fork channel is fixedly arranged at the bottom of the melting box and is communicated into the melting box, and a valve used for controlling discharging is fixedly arranged on the upper side of the fork channel.
The invention has the beneficial effects that: the invention carries out more sufficient stirring through the rotation of the melting box and the positive and negative rotation of the blades in the melting box, thereby enhancing the mutual mixing of materials, improving the heat in the melting box and increasing the pressure in the melting box through the pouring of hot gas, thereby accelerating the sufficient melting of the materials.
Drawings
For ease of illustration, the invention is described in detail by the following specific examples and figures.
FIG. 1 is a schematic view of the overall structure of a melting apparatus for a new material capable of sufficiently stirring according to the present invention;
FIG. 2 is a schematic view of the internal structure of a stirring shaft according to the present invention;
FIG. 3 is a schematic view of the structure in the direction "A-A" of FIG. 1;
FIG. 4 is a schematic view of the structure in the direction of "B-B" in FIG. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The invention relates to a melting device for new materials capable of being fully stirred, which is mainly applied to the field, and the invention is further explained by combining the attached drawings of the invention:
the melting device for the new material capable of being fully stirred comprises a box body 19, wherein a working space 70 is arranged in the box body 19, a melting box 52 is arranged in the working space 70, two annular upper wheel grooves 33 are arranged at the bottom of the melting box 52, rotating shafts 34 are rotatably connected on the left inner wall and the right inner wall of each upper wheel groove 33, pulleys 42 are fixedly arranged on the rotating shafts 34, lower wheel grooves 41 allowing the pulleys 42 to enter are arranged on the bottom wall of the working space 70, the pulleys 42 are slidably connected in the lower wheel grooves 41, so that the rotatability of the melting box 52 is realized, first rotating motors 40 which are bilaterally symmetrical are fixedly arranged on two sides of the bottom wall of the working space 70, a gear shaft 39 is fixedly arranged on the upper side of each first rotating motor 40, a gear wheel 38 is fixedly arranged on the gear shaft 39, a rack plate 37 is fixedly arranged on the lower side of the outer side surface of the melting box 52, and the gear wheel 38, the first rotating motor 40 is started to drive the gearwheel 38 to rotate, so that the rotation control of the first rotating motor 40 on the melting tank 52 is realized through the meshing connection of the gearwheel 38 and the rack plate 37, a groove 53 is fixedly arranged at the top of the melting tank 52, a cover plate 55 is connected with the groove 53 in a sliding manner, air cylinders 14 are fixedly arranged in the top wall of the working space 70 in a bilateral symmetry manner, air cylinder rods 25 are arranged between the air cylinders 14 and the cover plate 55, the control of the cover plate 55 when the air pressure of the melting tank 52 is over-high is realized through the air cylinders 14, the cover plate 55 does not rotate along with the rotation of the melting tank 52, a heating plate 18 for heating air flow is fixedly arranged in the side wall of the tank body 19, a blowing device 101 capable of absorbing hot air and leading the hot air to the melting tank 52 is arranged at the left side of the cover plate 55, and a material leading device 201 for leading in processing materials, a stirring device 301 for stirring various processing materials is provided in the cover plate 55 and the melting tank 52, and a filtering device 401 for discharging the melted materials is provided at the bottom of the melting tank 52.
According to the embodiment, the following is to describe in detail the air blowing device 101, the air blowing device 101 includes the mount 16 that sets firmly in the top wall on the left side of the working space 70, the mount 16 downside is equipped with first opening 54, the apron 55 left side is equipped with second opening 22, first opening 54 with air pipe 15 has been set firmly between the second opening 22, air pipe 15 one side opening internal stability is equipped with and is used for inhaling hot air blower 17 in air pipe 15, air pipe 15 another side opening internal stability is equipped with and is used for discharging hot air to the air pump 21 in the fusion box 52, air pump 21 downside sets firmly the exhaust outlet 23 that is used for diffusing hot air exhaust area.
According to an embodiment, the material feeding device 201 is described in detail below, the material feeding device 201 includes a third opening 13 disposed on the right side of the top of the box, a material pouring pipe 26 extending out of the box 19 and penetrating through the cover plate 55 is fixedly disposed in the third opening 13, a funnel 12 for enlarging the opening to prevent waste material is fixedly disposed on the top of the material pouring pipe 26, and a filter screen 11 for filtering coarse particles to reduce the stirring burden is fixedly disposed in the funnel 12.
In the following, the stirring device 301 is described in detail according to an embodiment, the stirring device 301 comprises a fourth opening 28 arranged in the middle of the cover plate 55, a second rotating motor 24 fixed to the cover plate 55 is provided on the upper side of the fourth opening 28, a stirring shaft 29 which passes through the fourth opening 28 and is rotatably connected with the bottom wall of the melting tank 52 is fixedly arranged at the lower side of the second rotating motor 24, a limiting plate 27 for stabilizing the position of the ascending stirring shaft 29 is fixedly arranged at the lower side of the cover plate 55, five auxiliary plates 51 are connected on the stirring shaft 29 in a sliding manner, a connecting frame 61 is fixedly arranged between the middle three auxiliary plates 51 and the melting tank 52, a reverse rotation device 501 and a forward rotation device 601 controlled by the second rotating motor 24 are respectively arranged between the adjacent auxiliary plates 51, and the reverse rotation device 501 and the forward rotation device 601 are not adjacent to the same device.
According to an embodiment, the details of the reversing device 501 will be described below, the reversing device 501 includes an internal gear 46 rotatably connected between the auxiliary plates 51, a reversing stirring blade 31 with ninety degrees of rotation is fixedly arranged on an outer side surface of the internal gear, a gear space 60 is arranged in the internal gear 46, an auxiliary shaft 48 rotatably connected between the auxiliary plates 51 is arranged in the gear space 60, a shaft gear 61 is fixedly arranged on the stirring shaft 29, an idler gear 49 engaged with the shaft gear 61 and the internal gear 46 is fixedly arranged on the auxiliary shaft 48, the second rotating motor 24 is started to control the rotation of the stirring shaft 29, the second rotating motor 24 is started, the stirring shaft 29 is rotated to drive the rotation of the stirring shaft 29, the internal gear 46 is rotated by the rotation of the stirring shaft 29 through the engagement relationship between the shaft gear 61 and the idler gear 49 and the internal gear 46, i.e., the reverse-rotation stirring vanes 31 are driven to reverse.
According to an embodiment, the forward rotation device 601 is described in detail below, the forward rotation device 601 includes blade columns 50 fixed on the stirring shaft 29, the forward rotation stirring blades 32 are fixed on the side surfaces of the blade columns 50 in an annular distribution, the second rotating motor 24 is started to drive the stirring shaft 29 to rotate, and the rotation of the stirring shaft 29 drives the blade columns 50 to rotate, that is, the forward rotation stirring blades 32 are driven to rotate forward.
According to the embodiment, the filtering device 401 is described in detail below, the filtering device 401 includes a fourth opening 45 disposed at the bottom of the box 19, a total outlet 44 is disposed in the fourth opening 45, branch passages 36 are fixedly disposed on the upper side of the total outlet 44 and distributed in an annular shape, the branch passages 36 are fixedly disposed at the bottom of the melting tank 52 and open into the melting tank 52, and a valve 35 for controlling discharging is fixedly disposed on the upper side of the branch passages 36.
When the material needs to be melted, the processing material is poured into the melting tank 52 through the funnel 12, the heating plate 18 is started to heat, the blower 17 absorbs hot air and leads the hot air into the melting tank 52 through the ventilation pipeline 15 with the help of the air pump 21, meanwhile, the first rotating motor 40 and the second rotating motor 24 are started, the melting tank 52 starts to rotate, the forward rotating stirring blades 32 and the reverse rotating stirring blades 31 in the melting tank 52 start to rotate to stir, after the stirring is sufficient, the valve 35 is opened, the melted material flows into the main outlet 44 through the branch passage 36, and finally is discharged out of the tank body 19.
The invention has the beneficial effects that: the invention carries out more sufficient stirring through the rotation of the melting box and the positive and negative rotation of the blades in the melting box, thereby enhancing the mutual mixing of materials, improving the heat in the melting box and increasing the pressure in the melting box through the pouring of hot gas, thereby accelerating the sufficient melting of the materials.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (7)
1. The utility model provides a melting device is used to new material that ability intensive mixing, includes the box, its characterized in that: the inner side of the bottom wall of the working space is provided with a first rotating motor which is bilaterally symmetrical, the upper side of the first rotating motor is provided with a gear shaft, the gear shaft is provided with a gear wheel, the lower side of the outer side surface of the melting box is provided with a rack plate, the gear wheel is meshed with the rack plate, the first rotating motor is started to drive the gear wheel to rotate, so that the rotation control of the melting box by the first rotating motor is realized through the meshing connection of the gear wheel and the rack plate, the melting box comprises a melting box body, and is characterized in that a groove is fixedly formed in the top of the melting box body, a cover plate is connected to the groove in a sliding mode, air cylinders are fixedly arranged in the top wall of the working space in a bilateral symmetry mode, an air cylinder rod is arranged between each air cylinder and the corresponding cover plate, the cover plate is controlled through the air cylinders when the air pressure of the melting box is too high, the cover plates do not rotate along with the rotation of the melting box body, a heating plate used for heating air flow is fixedly arranged in the side wall of the box body, an air blowing device capable of absorbing hot air and leading the hot air to the melting box is arranged on the left side of the cover plate, a material leading-in device used for leading in processing materials is arranged on the right side of the working space, stirring devices used for stirring the processing materials.
2. A melting apparatus for a new material capable of being sufficiently stirred according to claim 1, wherein: the air-blast device including set firmly in the mount of workspace left side roof, the mount downside is equipped with first opening, the apron left side is equipped with the second opening, first opening with air pipe has set firmly between the second opening, air pipe one side opening internal stability is equipped with and is used for inhaling steam air-blower in the air pipe, air pipe another side opening internal stability is equipped with the air pump that is used for discharge steam to the fusion case, the air pump downside sets firmly the air exit that is used for diffusion hot gas exhaust area.
3. A melting apparatus for a new material capable of being sufficiently stirred according to claim 1, wherein: the material lets in the device including locating the third opening on box top right side, set firmly in the third opening and stretch out outside the box and run through the material pouring pipe of apron, the material pouring pipe top sets firmly the funnel that is used for enlarging the opening and prevents extravagant material, set firmly in the funnel and be used for filtering the filter screen that coarse grain reduces the stirring burden.
4. A melting apparatus for a new material capable of being sufficiently stirred according to claim 1, wherein: the stirring device comprises a fourth opening arranged in the middle of the cover plate, a second rotating motor fixed on the cover plate is arranged on the upper side of the fourth opening, a stirring shaft connected to the bottom wall of the melting tank in a rotating mode through the fourth opening is fixedly arranged on the lower side of the second rotating motor, a limiting plate used for stabilizing the position of the ascending stirring shaft is fixedly arranged on the lower side of the cover plate, five auxiliary plates are connected onto the stirring shaft in a sliding mode, a connecting frame is fixedly arranged between the middle three auxiliary plates and the melting tank, a reversing device and a forward rotating device controlled by the second rotating motor are arranged between the adjacent auxiliary plates respectively, and the reversing device and the forward rotating device are not adjacent to the same device.
5. A melting apparatus for a new material capable of being sufficiently stirred according to claim 4, wherein: the reversing device comprises an inner gear which is rotatably connected between the auxiliary plates, reversing stirring blades which are distributed in a ninety-degree rotating mode are fixedly arranged on the outer side face of the inner gear, a gear space is arranged in the inner gear, an auxiliary shaft which is rotatably connected between the auxiliary plates is arranged in the gear space, a shaft gear is fixedly arranged on the stirring shaft, an idler wheel which is connected with the shaft gear and the inner gear in a meshed mode is fixedly arranged on the auxiliary shaft, and the second rotating motor is started to control the stirring shaft to rotate.
6. A melting apparatus for a new material capable of being sufficiently stirred according to claim 4, wherein: the corotation device comprises blade columns fixedly arranged on the stirring shaft, and corotation stirring blades are fixedly arranged on the side surfaces of the blade columns in an annular distribution mode.
7. A melting apparatus for a new material capable of being sufficiently stirred according to claim 1, wherein: the filter equipment is including locating the fourth opening of bottom half, be equipped with total export in the fourth opening, total export upside sets firmly the trouble passageway that is the annular and distributes, the trouble passageway set firmly in melting bottom of the case portion, and let in the melting case, trouble passageway upside sets firmly the valve that is used for controlling the ejection of compact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232362.9A CN111318235A (en) | 2020-03-28 | 2020-03-28 | Melting device for new material capable of fully stirring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010232362.9A CN111318235A (en) | 2020-03-28 | 2020-03-28 | Melting device for new material capable of fully stirring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111318235A true CN111318235A (en) | 2020-06-23 |
Family
ID=71164098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010232362.9A Withdrawn CN111318235A (en) | 2020-03-28 | 2020-03-28 | Melting device for new material capable of fully stirring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111318235A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112808046A (en) * | 2021-01-06 | 2021-05-18 | 周良茂 | Preparation method of environment-friendly water-based cutting fluid |
-
2020
- 2020-03-28 CN CN202010232362.9A patent/CN111318235A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112808046A (en) * | 2021-01-06 | 2021-05-18 | 周良茂 | Preparation method of environment-friendly water-based cutting fluid |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200623 |
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| WW01 | Invention patent application withdrawn after publication |