CN112720899A - High-efficient compounding equipment of polytetrafluoroethylene powder - Google Patents
High-efficient compounding equipment of polytetrafluoroethylene powder Download PDFInfo
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- CN112720899A CN112720899A CN202011620052.0A CN202011620052A CN112720899A CN 112720899 A CN112720899 A CN 112720899A CN 202011620052 A CN202011620052 A CN 202011620052A CN 112720899 A CN112720899 A CN 112720899A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/08—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers
- B02C18/10—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within vertical containers with drive arranged above container
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/18—Knives; Mountings thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
- B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
- B02C18/16—Details
- B02C18/24—Drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention provides polytetrafluoroethylene powder efficient mixing equipment which comprises a first mixing cylinder, a second mixing cylinder and a third mixing cylinder, wherein sealing bearing rings are arranged at the middle positions of the top and the bottom of the first mixing cylinder; according to the invention, the powder is subjected to first mixing by the rotation of the third mixing cylinder and the reverse rotation of the cutting blade, then the powder is thrown into the second mixing cylinder from the first sieve hole, the second mixing cylinder is subjected to reverse rotation by the rotation of the second mixing cylinder and the mixing teeth on the outer side of the third mixing cylinder, the powder is cut and centrifuged again, finally the powder is thrown into the first mixing cylinder from the second sieve hole, and the powder is stirred and mixed by the rotation of the mixing blade, so that the three-step mixing is realized, the multiple cutting is realized, the mixing is more uniform, and the efficiency is high.
Description
Technical Field
The invention relates to the technical field of mixing equipment, in particular to high-efficiency polytetrafluoroethylene powder mixing equipment.
Background
Polytetrafluoroethylene, commonly known as 'plastic king', is a high molecular polymer prepared by polymerizing tetrafluoroethylene as a monomer, is white wax-like, semitransparent, heat-resistant and cold-resistant, can be used at minus 180-260 ℃ for a long time, has the characteristics of acid and alkali resistance and various organic solvents resistance, is almost insoluble in all solvents, has the characteristic of high temperature resistance, has extremely low friction coefficient, can be used for lubricating, and also becomes an ideal coating for easily cleaning the inner layer of a water pipe;
in order to comprehensively consider the improvement of quality and the reduction of cost, polytetrafluoroethylene needs to adopt a scheme of compounding various raw materials in production, and also needs to adopt powder with various colors to mix and match colors to form powder with a new color, so that mixing equipment is needed.
Disclosure of Invention
Aiming at the problems, the invention provides the efficient polytetrafluoroethylene powder mixing equipment which is used for mixing materials in three steps, cutting for multiple times, mixing materials more uniformly, having high efficiency and reducing powder caking.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: a polytetrafluoroethylene powder high-efficiency mixing device comprises a first mixing barrel, a second mixing barrel and a third mixing barrel, wherein sealing bearing rings are arranged at the middle positions of the top and the bottom of the first mixing barrel, the second mixing barrel is rotatably arranged inside the first mixing barrel through the sealing bearing rings, a sealing cover is arranged on the second mixing barrel, the bearing rings are arranged on the inner side of the sealing cover, the third mixing barrel is rotatably arranged in the second mixing barrel through the bearing rings, first sieve holes are arranged on the side wall of the third mixing barrel, a plurality of groups of first sieve holes are arranged on the first sieve holes, mixing teeth are arranged on the outer side of the third mixing barrel, a plurality of groups of mixing teeth are equidistantly arranged, second sieve holes are arranged on the side wall of the second mixing barrel, a plurality of groups of second sieve holes are arranged on the second sieve holes, the caliber of the second sieve holes is smaller than that of the first sieve holes, a mounting plate is arranged above the first mixing barrel, and the intermediate position department of mounting panel bottom rotates and installs first toothed disc, the edge of mounting panel bottom rotates and installs the second toothed disc, and the second toothed disc is equipped with two sets ofly at least, second toothed disc and first toothed disc looks adaptation, the bottom of first toothed disc is equipped with first (mixing) shaft, and just first (mixing) shaft extends to the inboard of third mixing barrel, be equipped with cutting blade on the lateral wall of first (mixing) shaft, the bottom of second toothed disc is equipped with the second (mixing) shaft, and the second (mixing) shaft extends to the inside of first mixing barrel, be equipped with the compounding blade on the lateral wall of second (mixing) shaft.
The further improvement lies in that: the top of mounting panel is equipped with first motor, and the output of first motor is connected with first toothed disc, one side on the mounting panel is equipped with the air blow pump, and the output of air blow pump is equipped with the hose, and is a set of the second (mixing) shaft is the hollow tube, the output and this group of hose the second (mixing) shaft intercommunication.
The further improvement lies in that: the edge of mounting panel bottom is equipped with the bracing piece, and the bracing piece is equipped with three groups at least, the top in the first compounding section of thick bamboo outside is equipped with the nested piece, the bracing piece is inserted and is established in the nested piece and install the knob bolt.
The further improvement lies in that: the below in the second compounding section of thick bamboo outside is equipped with the gear circle, one side of first compounding bobbin base portion is equipped with the second motor, the output of second motor is equipped with the gear, and the gear with gear circle looks adaptation.
The further improvement lies in that: and a third motor is arranged on one side of the top of the first mixing barrel, and the output end of the third motor and the outer side of the third mixing barrel are connected with a belt.
The further improvement lies in that: one side of first compounding section of thick bamboo bottom intercommunication has the discharging pipe, and is equipped with the solenoid valve on the discharging pipe, the below of first compounding section of thick bamboo is equipped with the landing leg.
The further improvement lies in that: and fastening gaskets are arranged above the outer side of the second mixing barrel and on the outer side of the sealing cover, and the fastening gaskets at the upper end and the lower end of each adjacent mixing barrel are fixed through bolts and nuts.
The further improvement lies in that: the rotating directions of the first stirring shaft and the third mixing cylinder are opposite, and the rotating directions of the third mixing cylinder and the second mixing cylinder are opposite.
The invention has the beneficial effects that: the invention mixes materials by matching the first mixing cylinder, the second mixing cylinder and the third mixing cylinder, the raw materials are firstly mixed in the third mixing cylinder, the third mixing cylinder rotates and matches with the cutting blade to rotate reversely to supply the cutting force and the centrifugal force of the powder, mixing the powder for the first time, then throwing the powder into a second mixing cylinder from the first sieve hole, rotating the second mixing cylinder to match with the mixing teeth on the outer side of a third mixing cylinder for reverse rotation, cutting and centrifuging the powder again, and finally throwing the powder into the first mixing cylinder from the second sieve hole, the powder is stirred and mixed by the rotation of the mixing blades, three steps of mixing and multiple cutting are carried out, the mixing is more uniform, the efficiency is high, the powder agglomeration is reduced, and in the mixing process, the powder that passes through can be filtered through first sieve mesh and second sieve mesh, can't cut down the material piece of smashing or other impurity, optimizes the powder quality after the compounding.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a schematic view of a second mixing bowl according to the present invention;
FIG. 3 is a schematic view of the third mixing bowl of the present invention;
FIG. 4 is a schematic view of the structure under the mounting plate of the present invention;
FIG. 5 is a schematic illustration of first and second gear discs of the present invention;
fig. 6 is a schematic view of a fastening gasket of the present invention.
Wherein: 1. a first mixing barrel; 2. a second mixing barrel; 3. a third mixing cylinder; 4. sealing the bearing ring; 5. a sealing cover; 6. a bearing ring; 7. a first screen hole; 8. mixing teeth; 9. a second sieve pore; 10. mounting a plate; 11. a first gear plate; 12. a second gear wheel disc; 13. a first stirring shaft; 14. a cutting blade; 15. a second stirring shaft; 16. mixing blades; 17. a first motor; 18. an air blower; 19. a hose; 20. a support bar; 21. sleeving blocks; 22. a knob bolt; 23. a gear ring; 24. a second motor; 25. a gear; 26. a third motor; 27. a belt; 28. a discharge pipe; 29. and fastening the gasket.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
According to the drawings of 1, 2, 3, 4, 5 and 6, the embodiment provides a polytetrafluoroethylene powder high-efficiency mixing device, which comprises a first mixing cylinder 1, a second mixing cylinder 2 and a third mixing cylinder 3, wherein sealing bearing rings 4 are respectively arranged at the middle positions of the top and the bottom of the first mixing cylinder 1, the second mixing cylinder 2 is rotatably installed inside the first mixing cylinder 1 through the sealing bearing rings 4, a sealing cover 5 is installed on the second mixing cylinder 2, a bearing ring 6 is arranged on the inner side of the sealing cover 5, the third mixing cylinder 3 is rotatably installed inside the second mixing cylinder 2 through the bearing ring 6, a first sieve hole 7 is formed in the side wall of the third mixing cylinder 3, a plurality of groups of first sieve holes 7 are formed in the side wall of the third mixing cylinder 3, a plurality of groups of mixing teeth 8 are arranged on the outer side of the third mixing cylinder 3 at equal intervals, a plurality of groups of second sieve holes 9 are formed in the side wall of the second mixing cylinder 2, and second sieve mesh 9 is equipped with the multiunit, the bore of second sieve mesh 9 is less than the bore of first sieve mesh 7, mounting panel 10 is installed to the top of first compounding section of thick bamboo 1, and the intermediate position department of mounting panel 10 bottom rotates and installs first toothed disc 11, the edge of mounting panel 10 bottom rotates and installs second toothed disc 12, and second toothed disc 12 is equipped with three groups, second toothed disc 12 and 11 looks adaptations of first toothed disc, the bottom of first toothed disc 11 is equipped with first (mixing) shaft 13, and first (mixing) shaft 13 extends to the inboard of third compounding section of thick bamboo 3, be equipped with cutting blade 14 on the lateral wall of first (mixing) shaft 13, the bottom of second toothed disc 12 is equipped with second (mixing) shaft 15, and second (mixing) shaft 15 extends to the inside of first compounding section of thick bamboo 1, be equipped with compounding blade 16 on the lateral wall of second (mixing) shaft 15. During the use, pour powder raw materials into third mixing barrel 3, third mixing barrel 3 is rotatory, powder cutting force and centrifugal force are given in first (mixing) shaft 13 and cutting blade 14 counter-rotation, carry out the compounding for the first time to the powder, the powder is thrown into second mixing barrel 2 from first sieve mesh 7 after that, second mixing barrel 2 is rotatory, third mixing barrel 3 and second mixing barrel 2 counter-rotation, the compounding tooth 8 in the outside is rotatory, cut and the centrifugation to the powder once more, first mixing barrel 1 is thrown into from second sieve mesh 9 to final powder, second (mixing) shaft 15 and the rotatory powder of compounding blade 16 are stirred the mixture, three-step compounding.
The top of mounting panel 10 is equipped with first motor 17, and the model of first motor 17 is Y90S-2, and the output of first motor 17 is connected with first toothed disc 11, and first toothed disc 11 is rotatory to drive first (mixing) shaft 13 rotatory, and first toothed disc 11 drives second toothed disc 12 simultaneously rotatory to it is rotatory to drive second (mixing) shaft 15, one side on the mounting panel 10 is equipped with air blowing pump 18, and air blowing pump 18's output is equipped with hose 19, and is a set of second (mixing) shaft 15 is the hollow tube, hose 19's output and this group second (mixing) shaft 15 intercommunication. For applying gas pressure during discharge to assist in discharging powder from the discharge tube 28.
The edge of mounting panel 10 bottom is equipped with bracing piece 20, and bracing piece 20 is equipped with three groups, the top in the first compounding section of thick bamboo 1 outside is equipped with nested piece 21, bracing piece 20 inserts and establishes in nested piece 21 and install knob bolt 22. The mounting plate 10 is easy to mount or dismount.
The below in the second compounding section of thick bamboo 2 outside is equipped with gear ring 23, one side of first compounding section of thick bamboo 1 bottom is equipped with second motor 24, and second motor 24's model is PDH160312, the output of second motor 24 is equipped with gear 25, and gear 25 with gear ring 23 looks adaptation. The second motor 24 rotates the gear 25, which in turn rotates the gear ring 23 and the second mixing drum 2.
And a third motor 26 is arranged on one side of the top of the first mixing barrel 1, the model of the third motor 26 is YNT-01, and the output end of the third motor 26 and the outer side of the third mixing barrel 3 are connected with a belt 27. The third mixing drum 3 is rotated by a third motor 26 via a belt 27.
One side of the bottom of the first mixing barrel 1 is communicated with a discharge pipe 28 for discharging, an electromagnetic valve is arranged on the discharge pipe 28, and support legs are arranged below the first mixing barrel 1.
And fastening gaskets 29 are arranged above the outer side of the second mixing barrel 2 and on the outer side of the sealing cover 5, and the fastening gaskets 29 at the upper end and the lower end of each adjacent mixing barrel are fixed by bolts matched with nuts. For fixing the second mixing cylinder 2 and the sealing cover 5.
The first stirring shaft 13 and the third mixing cylinder 3 rotate in opposite directions, and the third mixing cylinder 3 and the second mixing cylinder 2 rotate in opposite directions.
The polytetrafluoroethylene powder high-efficiency mixing equipment mixes materials through the cooperation of the first mixing cylinder 1, the second mixing cylinder 2 and the third mixing cylinder 3, raw materials are firstly mixed in the third mixing cylinder 3, the third mixing cylinder 3 rotates in a reverse direction in cooperation with the cutting blade 14 to supply cutting force and centrifugal force to the powder, the powder is mixed for the first time, then the powder is thrown into the second mixing cylinder 2 from the first sieve hole 7, the second mixing cylinder 2 rotates in a reverse direction in cooperation with the mixing tooth 8 on the outer side of the third mixing cylinder 3 to cut and centrifuge the powder again, finally the powder is thrown into the first mixing cylinder 1 from the second sieve hole 9, the powder is stirred and mixed through the rotation of the mixing blade 16, three-step mixing is realized, multiple cutting is realized, the mixing is more uniform, the efficiency is high, the powder caking is reduced, in the mixing process, the passing powder can be filtered through the first sieve hole 7 and the second sieve hole 9, filtering down the blocks or other impurities which can not be cut and smashed, and optimizing the quality of the powder after mixing.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a high-efficient compounding equipment of polytetrafluoroethylene powder which characterized in that: comprises a first mixing cylinder (1), a second mixing cylinder (2) and a third mixing cylinder (3), wherein sealing bearing rings (4) are respectively arranged at the top and the bottom of the first mixing cylinder (1), the second mixing cylinder (2) is rotatably arranged inside the first mixing cylinder (1) through the sealing bearing rings (4), a sealing cover (5) is arranged on the second mixing cylinder (2), a bearing ring (6) is arranged on the inner side of the sealing cover (5), the third mixing cylinder (3) is rotatably arranged in the second mixing cylinder (2) through the bearing ring (6), a first sieve hole (7) is arranged on the side wall of the third mixing cylinder (3), a plurality of groups of first sieve holes (7) are arranged, mixing teeth (8) are arranged on the outer side of the third mixing cylinder (3), a plurality of groups of mixing teeth (8) are arranged at equal intervals, and second sieve holes (9) are arranged on the side wall of the second mixing cylinder (2), and the second sieve pore (9) is provided with a plurality of groups, the caliber of the second sieve pore (9) is smaller than that of the first sieve pore (7), the mounting plate (10) is mounted above the first mixing barrel (1), the middle position of the bottom of the mounting plate (10) is rotatably provided with the first gear disc (11), the edge of the bottom of the mounting plate (10) is rotatably provided with the second gear disc (12), at least two groups of second gear discs (12) are arranged, the second gear disc (12) is matched with the first gear disc (11), the bottom of the first gear disc (11) is provided with the first stirring shaft (13), the first stirring shaft (13) extends to the inner side of the third mixing barrel (3), the side wall of the first stirring shaft (13) is provided with the cutting blade (14), the bottom of the second gear disc (12) is provided with the second stirring shaft (15), and the second stirring shaft (15) extends to the inside of the first mixing barrel (1), and a mixing blade (16) is arranged on the side wall of the second stirring shaft (15).
2. The efficient polytetrafluoroethylene powder mixing device as in claim 1, wherein: the top of mounting panel (10) is equipped with first motor (17), and the output of first motor (17) is connected with first toothed disc (11), one side on mounting panel (10) is equipped with air blowing pump (18), and the output of air blowing pump (18) is equipped with hose (19), and is a set of second (mixing) shaft (15) are the hollow tube, the output and this group of hose (19) second (mixing) shaft (15) intercommunication, air blowing pump (18) are used for applying the supplementary powder ejection of compact of atmospheric pressure in first compounding section of thick bamboo (1) when unloading.
3. The efficient polytetrafluoroethylene powder mixing device as in claim 1, wherein: the edge of mounting panel (10) bottom is equipped with bracing piece (20), and bracing piece (20) are equipped with three groups at least, the top in first compounding section of thick bamboo (1) outside is equipped with nested piece (21), bracing piece (20) are inserted and are established in nested piece (21) and install knob bolt (22).
4. The efficient polytetrafluoroethylene powder mixing device as in claim 1, wherein: the below in second compounding section of thick bamboo (2) outside is equipped with gear circle (23), one side of first compounding section of thick bamboo (1) bottom is equipped with second motor (24), the output of second motor (24) is equipped with gear (25), and gear (25) with gear circle (23) looks adaptation, second motor (24) drive gear (25) rotatory, and gear (25) cooperation gear circle (23) drive second compounding section of thick bamboo (2) rotatory.
5. The efficient polytetrafluoroethylene powder mixing device as in claim 1, wherein: one side at first compounding section of thick bamboo (1) top is equipped with third motor (26), and the output of third motor (26) and the outside of third compounding section of thick bamboo (3) are connected with belt (27), third motor (26) pass through belt (27) drive third compounding section of thick bamboo (3) are rotatory.
6. The efficient polytetrafluoroethylene powder mixing device as in claim 1, wherein: one side of the bottom of the first mixing barrel (1) is communicated with a discharge pipe (28), an electromagnetic valve is arranged on the discharge pipe (28), and support legs are arranged below the first mixing barrel (1).
7. The efficient polytetrafluoroethylene powder mixing device as in claim 1, wherein: and fastening gaskets (29) are arranged above the outer side of the second mixing barrel (2) and on the outer side of the sealing cover (5), and the fastening gaskets (29) at the upper end and the lower end which are adjacent are fixed by bolts and nuts.
8. The efficient polytetrafluoroethylene powder mixing device as in claim 1, wherein: the rotating directions of the first stirring shaft (13) and the third mixing cylinder (3) are opposite, and the rotating directions of the third mixing cylinder (3) and the second mixing cylinder (2) are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011620052.0A CN112720899B (en) | 2020-12-31 | 2020-12-31 | High-efficient compounding equipment of polytetrafluoroethylene powder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011620052.0A CN112720899B (en) | 2020-12-31 | 2020-12-31 | High-efficient compounding equipment of polytetrafluoroethylene powder |
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| CN112720899A true CN112720899A (en) | 2021-04-30 |
| CN112720899B CN112720899B (en) | 2022-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426656A (en) * | 2021-05-20 | 2021-09-24 | 卢会娥 | Flour screening equipment |
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| CN210613552U (en) * | 2019-07-29 | 2020-05-26 | 河南征远沥青砼有限公司 | Granular petroleum asphalt stirring equipment |
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| CN113426656A (en) * | 2021-05-20 | 2021-09-24 | 卢会娥 | Flour screening equipment |
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