CN112984995A - Plate-shaped corundum raw ball drying equipment and working method thereof - Google Patents
Plate-shaped corundum raw ball drying equipment and working method thereof Download PDFInfo
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- CN112984995A CN112984995A CN202110225418.2A CN202110225418A CN112984995A CN 112984995 A CN112984995 A CN 112984995A CN 202110225418 A CN202110225418 A CN 202110225418A CN 112984995 A CN112984995 A CN 112984995A
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- green ball
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses plate-shaped corundum green pellet drying equipment which comprises an air cylinder, wherein a feeding hole is formed in the left side of the air cylinder, an exhaust elbow is arranged on the right side of the air cylinder, an oven is arranged at the lower end of the exhaust elbow, a conical hopper is connected to the lower end of the oven, a discharging hole is formed in the lower end of the conical hopper, a heating cylinder is connected to the right end of the conical hopper, an electric cabinet is connected to the upper end of the heating cylinder, a fan is connected to the upper end of the electric cabinet, a piston rod is connected to the air cylinder, a conical cylinder is connected to the lower end of the piston rod, a movable groove is formed in the cylinder wall of the conical cylinder, a right-angle plate is arranged inside the movable groove, a hinge block is hinged to the upper. This slabby corundum green ball drying equipment, the structure sets up rationally, through setting up the stirring device, is convenient for green ball thermally equivalent, improves drying efficiency and oven-dry mass.
Description
Technical Field
The invention relates to the technical field of stone processing equipment, in particular to plate-shaped corundum green ball drying equipment and a working method thereof.
Background
The plate-shaped corundum is a pure sintered corundum without additives, has a coarse-grained and well-developed alpha-Al 2O3 crystal structure, is in a plate-shaped crystal structure under an electron microscope, has small air holes and more closed air holes, has the porosity approximately equal to that of fused corundum, is high in purity, good in volume stability and extremely small in re-sintering shrinkage, and has good thermal shock stability and bending strength after being subjected to high-temperature treatment, and the green ball required by corundum production is usually industrial alumina and is prepared by grinding, forming, dehydrating and drying.
However, current green ball drying equipment generally puts in the stoving case with the green ball, through hot-blast direct and green ball contact, the inside moisture of stoving green ball, because the green ball is in static state at the stoving in-process, leads to unable thermally equivalent, consequently leads to at the bottom of the drying efficiency, and it is poor to dry the effect, for this reason we have proposed a platelike corundum green ball drying equipment, is used for solving above-mentioned problem.
Disclosure of Invention
The invention aims to provide plate-shaped corundum raw ball drying equipment and a working method thereof, and aims to solve the problems that the existing raw ball drying equipment in the background art generally puts raw balls into a drying box, the raw balls are directly contacted with the raw balls through hot air, the moisture in the raw balls is dried, and the raw balls cannot be uniformly heated in the drying process, so that the drying efficiency is low, and the drying effect is poor.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a platelike corundum green ball drying equipment, includes the cylinder, the left side of cylinder is provided with the feed inlet, and the right side of cylinder is provided with the exhaust elbow, the lower extreme of exhaust elbow is provided with the oven, and the lower extreme of oven is connected with the awl hopper, the lower extreme of awl hopper is provided with the drain hole, and the right-hand member of awl hopper is connected with the heating cylinder, the upper end of heating cylinder is connected with the electric cabinet, and the upper end of electric cabinet is connected with the fan, the cylinder be connected with the piston rod, and the lower extreme of piston rod is connected with a awl section of thick bamboo, the movable groove has been seted up to the section of thick bamboo wall of a awl section of thick bamboo, and the inside in movable groove is provided with the right.
Preferably, the hypotenuse of rectangular plate is located the outside of a awl section of thick bamboo, and the inboard of rectangular plate is connected with the connecting rod to the surface of connecting rod is provided with the spring.
Preferably, the lower extreme of awl section of thick bamboo is provided with the tapered end, and the inside of awl section of thick bamboo is provided with the fixed plate to the fixed plate is through the through-hole and the connecting rod sliding connection that inside set up, and is provided with the stopper at the opposite side of fixed plate.
Preferably, the rectangular plate passes through activity groove and a awl section of thick bamboo sliding connection, and the long right-angle limit of rectangular plate and the handing-over end of hypotenuse are articulated with a awl section of thick bamboo lateral wall to the rectangular plate sets up to two reverse oppositions and is provided with the interval around and.
Preferably, the material turning plate is provided with two semicircular plates which are arranged in a front-back opposite mode, the semicircular plates are hinged to the right-angle plate through hinge blocks, and the hinge blocks are vertically fixed with the material turning plate.
Preferably, the piston rod is connected with the upper end cover of the oven in a sliding mode through a linear bearing, the piston rod drives the conical cylinder to reciprocate up and down, and the frequency of the reciprocating motion is controlled and adjusted through an air inlet valve of the air cylinder.
Preferably, the feed inlet is externally connected with a material suction device, a through hole partition plate is arranged at the joint of the heating cylinder and the conical hopper, and the aperture of the through hole partition plate is smaller than the diameter of the green ball.
A plate-shaped corundum green ball drying device and a working method thereof comprise the following steps:
s: firstly, raw ball raw materials are sucked into an oven through a material sucking device externally connected with a feeding hole, a fan blows hot air into the oven through an electric cabinet and a heating cylinder through a conical hopper, and vapor evaporated when the raw balls in the oven are heated is discharged through an exhaust elbow at the top of the oven;
s: the piston rod is driven by the cylinder to further drive the conical barrel to reciprocate up and down, during the reciprocating motion of the conical barrel, firstly, in the downward motion process of the conical barrel, right-angle plates and a material turning plate on two sides are under the resistance action of green balls, the right-angle plates move towards the inner part of the conical barrel through movable grooves formed in the wall of the conical barrel, at the moment, a spring is compressed, a connecting rod slides inwards, and the material turning plate is hinged with the right-angle plates and turned upwards;
s: then in awl section of thick bamboo upward movement in-process, same right angle board and material turning plate receive the resistance effect of green ball, and the material turning plate is opened downwards, because articulated piece and the material turning plate vertical fixation of material turning plate bottom, consequently articulated piece receives the spacing of right angle board and blocks for the material turning plate keeps the horizontality, and then at the in-process that rises, stirs the green ball of top, and the thermally equivalent is convenient for in stirring from top to bottom the green ball, and the green ball of stoving completion is discharged through the drain hole at last.
Compared with the prior art, the invention has the beneficial effects that: the plate-shaped corundum green ball drying equipment is reasonable in structure arrangement, and the green balls can be uniformly heated by arranging the material turning device, so that the drying efficiency and the drying quality are improved;
1. raw pellets are sucked into the oven through a material sucking device externally connected with the feeding hole, hot air is blown into the oven through a conical hopper by a fan through an electric cabinet and a heating cylinder, vapor evaporated by heating raw pellets in the oven is discharged through an exhaust elbow at the top of the oven, a piston rod is driven by an air cylinder, and then the conical cylinder is driven to reciprocate to lift, so that the material turning is facilitated, and the dried raw pellets are discharged through a discharging hole;
2. the awl section of thick bamboo is in reciprocating motion, at first the awl section of thick bamboo is in the downstream in-process, the right-angle board and the material turning plate of both sides receive the resistance effect of green ball, the movable groove that the right-angle board was seted up through awl section of thick bamboo wall is to awl section of thick bamboo inside removal, the spring is compressed this moment, the connecting rod slides to the inboard, the material turning plate is through articulated with the right-angle board, upwards turn up, then in awl section of thick bamboo upstream in-process, same right-angle board and material turning plate receive the resistance effect of green ball, the material turning plate opens downwards, because articulated piece and the material turning plate vertical fixation of material turning plate bottom, consequently articulated piece receives the spacing of right-angle board and blocks, make the material turning plate keep the horizontality, and then at the in-process that rises, turn the.
Drawings
FIG. 1 is a schematic external view of the present invention;
FIG. 2 is a schematic view of the internal structure of the oven of the present invention;
FIG. 3 is a schematic view of the internal structure of the cone of the present invention;
FIG. 4 is a schematic top view of the cone of the present invention;
fig. 5 is a schematic view of the material turnover plate connection of the present invention.
In the figure: 1. a cylinder; 2. a feed inlet; 3. an oven; 4. a cone hopper; 5. a discharging port; 6. a heating cylinder; 7. an electric cabinet; 8. a fan; 9. an exhaust elbow; 10. a piston rod; 11. a conical cylinder; 12. a movable groove; 13. a material turning plate; 14. a right-angle plate; 15. a tapered end; 16. a limiting block; 17. a spring; 18. a connecting rod; 19. a fixing plate; 20. a hinged block.
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.
Referring to fig. 1-5, the present invention provides a technical solution: a plate-shaped corundum green ball drying device comprises an air cylinder 1, a feeding hole 2, an oven 3, a conical hopper 4, a discharging hole 5, a heating cylinder 6, an electric cabinet 7, a fan 8, an exhaust elbow 9, a piston rod 10, a conical cylinder 11, a movable groove 12, a material turning plate 13, a right-angle plate 14, a conical end 15, a limiting block 16, a spring 17, a connecting rod 18, a fixing plate 19 and a hinge block 20, wherein the feeding hole 2 is arranged on the left side of the air cylinder 1, the exhaust elbow 9 is arranged on the right side of the air cylinder 1, the oven 3 is arranged at the lower end of the exhaust elbow 9, the conical hopper 4 is connected to the lower end of the oven 3, the discharging hole 5 is arranged at the lower end of the conical hopper 4, the heating cylinder 6 is connected to the right end of the conical hopper 4, the electric cabinet 7 is connected to the upper end of the heating cylinder 6, the fan 8 is connected to the upper end of, the wall of a cone 11 is seted up movable groove 12, and the inside in movable groove 12 is provided with right-angle plate 14, and the upper end of right-angle plate 14 articulates there is articulated piece 20, and the upper end of articulated piece 20 is fixed with material turning plate 13.
As in fig. 1 and fig. 2, inhale the raw pellets raw materials through the external material equipment of inhaling of feed inlet 2 and inhale oven 3, fan 8 will be hot-blast through awl hopper 4 insufflate inside oven 3 through electric cabinet 7 and cartridge heater 6, and the inside raw pellets of oven 3 are heated the steam of evaporation and are discharged through the exhaust elbow 9 at oven 3 top, drive piston rod 10 through cylinder 1, and then drive the reciprocating up-and-down motion of a awl section of thick bamboo 11, the stirring of being convenient for, the raw pellets that the stoving was accomplished are discharged through drain hole 5 at last.
As shown in fig. 3, 4 and 5, in the reciprocating motion of the conical cylinder 11, firstly, during the downward motion of the conical cylinder 11, the right-angle plates 14 and the material turning plates 13 on both sides receive the resistance action of the green pellets, the right-angle plates 14 move towards the inside of the conical cylinder 11 through the movable grooves 12 formed in the cylinder wall of the conical cylinder 11, at this time, the springs 17 are compressed, the connecting rods 18 slide towards the inner side, the material turning plates 13 are hinged to the right-angle plates 14 and turned upwards, then during the upward motion of the conical cylinder 11, the right-angle plates 14 and the material turning plates 13 receive the resistance action of the green pellets, the material turning plates 13 are opened downwards, and since the hinged blocks 20 at the bottom of the material turning plates 13 are vertically fixed to the material turning plates 13, the hinged blocks 20 are blocked by the limiting plates 14, so that the material turning plates 13 are kept in a horizontal state, further during the rising process, the green pellets above are turned over, and are convenient to.
A plate-shaped corundum green ball drying device and a working method thereof comprise the following steps:
s1: firstly, raw ball raw materials are sucked into an oven 3 through a material sucking device externally connected with a feeding hole 2, a fan 8 blows hot air into the oven 3 through an electric cabinet 7 and a heating cylinder 6 through a cone hopper 4, and water vapor evaporated by heating raw balls in the oven 3 is discharged through an exhaust elbow 9 at the top of the oven 3;
s2: the piston rod 10 is driven through the air cylinder 1, the conical barrel 11 is further driven to do reciprocating lifting motion, during the reciprocating motion of the conical barrel 11, firstly, in the downward motion process of the conical barrel 11, the right-angle plates 14 and the material turning plates 13 on two sides are under the resistance action of green balls, the right-angle plates 14 move towards the interior of the conical barrel 11 through the movable grooves 12 formed in the barrel wall of the conical barrel 11, at the moment, the springs 17 are compressed, the connecting rods 18 slide inwards, and the material turning plates 13 are hinged with the right-angle plates 14 and turn upwards;
s3: then in the upward motion in-process of awl section of thick bamboo 11, same right-angle plate 14 and material turning plate 13 receive the resistance effect of green ball, material turning plate 13 opens downwards, because articulated block 20 and material turning plate 13 vertical fixation of material turning plate 13 bottom, consequently articulated block 20 receives the spacing of right-angle plate 14 and blocks, make material turning plate 13 keep the horizontality, and then in the in-process that rises, turn over the green ball of top, and be convenient for thermally equivalent in turning the green ball from top to bottom, the green ball of stoving completion is last to be discharged through drain hole 5.
The working principle is as follows: when the plate-shaped corundum green ball drying equipment is used, firstly, as shown in a figure 1, a figure 2, a figure 3, a figure 4 and a figure 5, raw ball raw materials are sucked into an oven 3 through a material sucking device externally connected with a feed inlet 2, a fan 8 blows hot air into the oven 3 through a cone hopper 4 through an electric cabinet 7 and a heating cylinder 6, vapor evaporated by heating of green balls in the oven 3 is discharged through an exhaust elbow 9 at the top of the oven 3, a piston rod 10 is driven through an air cylinder 1, and then the cone 11 is driven to reciprocate and lift, during reciprocating motion of the cone 11, firstly, during downward motion of the cone 11, right-angle plates 14 and material turning plates 13 at two sides are subjected to resistance action of the green balls, the right-angle plates 14 move towards the interior of the cone 11 through movable grooves 12 formed in the cone 11, at the moment, springs 17 are compressed, connecting rods 18 slide inwards, the material turning plates 13 are hinged with the right-angle plates 14, upwards turn up, then at the upward motion in-process of awl section of thick bamboo 11, same right angle board 14 and material turning plate 13 receive the resistance effect of green ball, material turning plate 13 is opened downwards, because articulated block 20 and material turning plate 13 vertical fixation of material turning plate 13 bottom, consequently articulated block 20 receives the spacing of right angle board 14 and blocks, make material turning plate 13 keep the horizontality, and then in the in-process that rises, turn over the green ball of top, and be convenient for thermally equivalent in turning the green ball from top to bottom, the green ball of stoving completion is last to be discharged through drain hole 5, this is exactly the whole process that platelike corundum green ball drying equipment used.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a platelike corundum green ball drying equipment, includes cylinder (1), its characterized in that: the air dryer is characterized in that a feeding hole (2) is formed in the left side of the air cylinder (1), an exhaust elbow (9) is arranged on the right side of the air cylinder (1), an oven (3) is arranged at the lower end of the exhaust elbow (9), a cone hopper (4) is connected to the lower end of the oven (3), a discharging hole (5) is formed in the lower end of the cone hopper (4), a heating cylinder (6) is connected to the right end of the cone hopper (4), an electric cabinet (7) is connected to the upper end of the heating cylinder (6), a fan (8) is connected to the upper end of the electric cabinet (7), a piston rod (10) is connected to the air cylinder (1), a cone cylinder (11) is connected to the lower end of the piston rod (10), a movable groove (12) is formed in the wall of the cone cylinder (11), a right-angle plate (14) is arranged inside the movable groove (, and the upper end of the hinged block (20) is fixed with a material turning plate (13).
2. The plate-shaped corundum green ball drying equipment according to claim 1, characterized in that: the hypotenuse of rectangular plate (14) is located the outside of awl section of thick bamboo (11), and the inboard of rectangular plate (14) is connected with connecting rod (18) to the surface of connecting rod (18) is provided with spring (17).
3. The plate-shaped corundum green ball drying equipment according to claim 1, characterized in that: the lower extreme of awl section of thick bamboo (11) is provided with tapered end (15), and the inside of awl section of thick bamboo (11) is provided with fixed plate (19), and fixed plate (19) through the through-hole and connecting rod (18) sliding connection that the inside set up, and be provided with stopper (16) at the opposite side of fixed plate (19).
4. The plate-shaped corundum green ball drying equipment according to claim 1, characterized in that: the rectangular plate (14) is connected with the conical cylinder (11) in a sliding mode through the movable groove (12), the cross connection end of the long rectangular edge of the rectangular plate (14) and the bevel edge is hinged to the side wall of the conical cylinder (11), and the rectangular plate (14) is arranged to be oppositely arranged and is provided with a distance in the front and the back.
5. The plate-shaped corundum green ball drying equipment according to claim 1, characterized in that: the material turning plate (13) is provided with two semicircular plates which are arranged in a front-back opposite mode, the semicircular plates are hinged to the right-angle plate (14) through hinge blocks (20), and the hinge blocks (20) are vertically fixed with the material turning plate (13).
6. The plate-shaped corundum green ball drying equipment according to claim 1, characterized in that: the piston rod (10) is connected with the upper end cover of the oven (3) in a sliding mode through a linear bearing, the piston rod (10) drives the conical cylinder (11) to reciprocate up and down, and the reciprocating frequency is controlled and adjusted through an air inlet valve of the air cylinder (1).
7. The plate-shaped corundum green ball drying equipment according to claim 1, characterized in that: the feeding port (2) is externally connected with a material sucking device, a through hole partition plate is arranged at the joint of the heating cylinder (6) and the conical hopper (4), and the aperture of the through hole partition plate is smaller than the diameter of the green pellets.
8. The plate-shaped corundum green ball drying equipment and the working method thereof according to any one of claims 1 to 7, characterized by comprising the following steps:
s1: firstly, raw ball raw materials are sucked into an oven (3) through a material sucking device externally connected with a feeding hole (2), a fan (8) blows hot air into the oven (3) through a conical hopper (4) through an electric cabinet (7) and a heating cylinder (6), and water vapor evaporated when the raw balls in the oven (3) are heated is discharged through an exhaust elbow (9) at the top of the oven (3);
s2: the piston rod (10) is driven through the air cylinder (1), the conical barrel (11) is further driven to reciprocate, during reciprocating motion of the conical barrel (11), firstly, in the downward motion process of the conical barrel (11), right-angle plates (14) and material turning plates (13) on two sides are subjected to the resistance action of green balls, the right-angle plates (14) move towards the interior of the conical barrel (11) through movable grooves (12) formed in the barrel wall of the conical barrel (11), at the moment, springs (17) are compressed, connecting rods (18) slide towards the inner side, and the material turning plates (13) are hinged with the right-angle plates (14) and turn upwards;
s3: then in awl section of thick bamboo (11) upward movement in-process, same right-angle board (14) and material turning plate (13) receive the resistance effect of green ball, material turning plate (13) are opened downwards, because articulated piece (20) and material turning plate (13) vertical fixation of material turning plate (13) bottom, consequently articulated piece (20) receive the spacing of right-angle board (14) and block, make material turning plate (13) keep the horizontality, and then in the in-process that rises, turn over the green ball of top, and be convenient for thermally equivalent in turning over from top to bottom the green ball, the green ball of stoving completion is finally discharged through drain hole (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110225418.2A CN112984995A (en) | 2021-03-01 | 2021-03-01 | Plate-shaped corundum raw ball drying equipment and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110225418.2A CN112984995A (en) | 2021-03-01 | 2021-03-01 | Plate-shaped corundum raw ball drying equipment and working method thereof |
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| CN112984995A true CN112984995A (en) | 2021-06-18 |
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| CN202110225418.2A Pending CN112984995A (en) | 2021-03-01 | 2021-03-01 | Plate-shaped corundum raw ball drying equipment and working method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369987A (en) * | 2016-09-27 | 2017-02-01 | 成都朵猫文化传播有限公司 | Novel drying device for buildings |
| CN108426420A (en) * | 2018-02-09 | 2018-08-21 | 海宁市鑫航塑料制品有限公司 | A kind of plastic products processing drying hopper |
| CN211120442U (en) * | 2019-09-04 | 2020-07-28 | 天津福赛汽车部件有限公司 | Automobile ornament injection molding raw material drying device |
| CN211137776U (en) * | 2019-09-23 | 2020-07-31 | 中科天华新材料（天津）有限公司 | Multistation plastic granules stoving hopper |
| CN112393556A (en) * | 2020-10-15 | 2021-02-23 | 安顺学院 | Drying device and drying method for feed |
-
2021
- 2021-03-01 CN CN202110225418.2A patent/CN112984995A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369987A (en) * | 2016-09-27 | 2017-02-01 | 成都朵猫文化传播有限公司 | Novel drying device for buildings |
| CN108426420A (en) * | 2018-02-09 | 2018-08-21 | 海宁市鑫航塑料制品有限公司 | A kind of plastic products processing drying hopper |
| CN211120442U (en) * | 2019-09-04 | 2020-07-28 | 天津福赛汽车部件有限公司 | Automobile ornament injection molding raw material drying device |
| CN211137776U (en) * | 2019-09-23 | 2020-07-31 | 中科天华新材料（天津）有限公司 | Multistation plastic granules stoving hopper |
| CN112393556A (en) * | 2020-10-15 | 2021-02-23 | 安顺学院 | Drying device and drying method for feed |
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Application publication date: 20210618 |
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