CN113976883B - Powder metallurgy's material feeding unit - Google Patents
Powder metallurgy's material feeding unit Download PDFInfo
- Publication number
- CN113976883B CN113976883B CN202011350926.5A CN202011350926A CN113976883B CN 113976883 B CN113976883 B CN 113976883B CN 202011350926 A CN202011350926 A CN 202011350926A CN 113976883 B CN113976883 B CN 113976883B
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- Prior art keywords
- box
- box body
- motor
- frame
- drying
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/005—Loading or unloading powder metal objects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/001—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors
- F26B17/006—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors the movement being imparted by oscillation or vibration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
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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
- F26B25/06—Chambers, containers, or receptacles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to the field of metallurgical raw material processing equipment, and particularly discloses a powder metallurgy feeding device which comprises a first box body, wherein a base is arranged at the bottom of the first box body, power devices are arranged at two sides of the first box body, a stirring and scattering device is arranged in the first box body and comprises a first limiting frame and a second limiting frame, a drying device is arranged below the base and comprises a drying box, an air suction device is arranged on the right side of the drying box, and a vibration device is arranged on one side of the drying box. According to the invention, the stirring and scattering device is driven by the power device to scatter the powder metallurgy material, the drying device is used for drying the powder metallurgy material, the induced draft device is used for providing motive power for the whole device, the vibration device is used for increasing the fluidity of the powder metallurgy material, the device is simple in structure and excellent in drying effect, and the beating device can be used for effectively preventing a filter screen from being blocked.
Description
Technical Field
The invention relates to the field of metallurgical raw material processing equipment, in particular to a powder metallurgy feeding device.
Background
Powder metallurgy is a process technology for preparing metal powder or using metal powder (or a mixture of metal powder and non-metal powder) as a raw material and manufacturing metal materials, composite materials and various products through forming and sintering, and has become a key for solving the problem of new materials due to the advantages of the powder metallurgy technology and plays a role in the development of the new materials. In the technical field of powder metallurgy, a specific feeding device is often required in the feeding process of powder metallurgy materials, but the powder metallurgy materials are easy to wet, if moisture evaporates in the production process, the quality of finished products can be affected, and therefore, drying is required in advance, but a traditional drying mode is simply heating, and because the materials are in powder form, the traditional drying device is rarely provided with a blowing device, so that insufficient drying is caused, and the drying effect is poor.
Disclosure of Invention
The invention aims to provide a feeding device for powder metallurgy, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a powder metallurgy's material feeding unit, includes first box, first box top is equipped with first case lid, first case lid center is equipped with the pan feeding mouth, first bottom half is equipped with the base, first box both sides are equipped with power device, the inside stirring of being equipped with of first box breaks up the device, stirring breaks up the device and includes first spacing and second spacing, the base below is equipped with drying device, drying device includes the stoving case, the stoving case right side is equipped with the device that induced drafts, one side of stoving case is equipped with vibrator.
As a further scheme of the invention: the power device comprises a first motor, the first motor is detachably connected to the base, a first belt wheel is detachably connected to an output shaft of the first motor, a second belt wheel is arranged above the first belt wheel, a first transmission rod is arranged on a central shaft of the second belt wheel, the first transmission rod is rotatably connected with the side wall of the first box body, and a belt is arranged between the first belt wheel and the second belt wheel.
As a further scheme of the invention: the first limiting frame is hinged with the second limiting frame, and the hinged part of the first limiting frame and the second limiting frame is rotatably connected to the rear wall of the first box body and externally connected with a control motor; the one end that is close to first spacing of first transfer line is equipped with first drive gear, first drive gear with fixed connection between the first transfer line, first transfer line with rotate between the first spacing.
As a further scheme of the invention: a second transmission rod is arranged in the second limiting frame, the second transmission rod is rotationally connected with the second limiting frame, a second transmission gear is arranged at one end, close to the second limiting frame, of the second transmission rod, and the second transmission gear is fixedly connected with the second transmission rod; the first transmission rod and the second transmission rod are detachably connected with limit buckles, stirring blades are arranged on the limit buckles, and the second transmission rod is provided with limit buckles and stirring blades; the first transmission gear is meshed with the second transmission gear.
As a further scheme of the invention: the drying box with can dismantle between the base and be connected, the inside hot plate that is equipped with of drying box, the hot plate with can dismantle between the drying box and be connected, it has the material hole to open on the hot plate, drying box bottom is equipped with damping spring, damping spring with fixed connection between the drying box.
As a further scheme of the invention: the device that induced drafts includes the third box, third box top is equipped with the second case lid, the second case lid with can dismantle between the third box and be connected, the inside filter screen that is equipped with of second case lid, one side of filter screen is equipped with the beating device, the beating device includes the drive frame, be equipped with the tup on the drive frame, the tup with through key axle transmission torque between the drive frame, one side that the tup was kept away from to the drive frame is equipped with control motor.
As a further scheme of the invention: a third motor is arranged in the third box body, and an impeller is detachably connected to an output shaft of the third motor; the telescopic rod is arranged below the third box body, the telescopic rod is fixedly connected with the third box body, a pedestal is arranged below the third box body, a rotating frame is arranged on the pedestal, an ear plate is arranged at the position, corresponding to the rotating frame, of the third box body, and the rotating frame is connected with the ear plate in a rotating mode.
As a further scheme of the invention: the vibrating device comprises a side frame, wherein the side frame is fixedly connected with the drying box, a second box body is arranged between the side frames, the second box body is of a detachable structure, a first limiting shaft is arranged on the second box body, the first limiting shaft is in sliding connection with the side frame, a first spring is arranged between the second box body and the side frame, and the first spring is sleeved on the first limiting shaft; the second box is internally provided with a second motor, a second limiting shaft is arranged on the second motor, a second spring is arranged between the second motor and the second box, the second spring is sleeved on the second limiting shaft, two sides of the second motor are provided with half wheels, and the initial installation angles of the half wheels at two sides are ninety degrees different.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the stirring and scattering device is driven by the power device to scatter the powder metallurgy material, the drying device is used for drying the powder metallurgy material, the induced draft device is used for providing motive power for the whole device, the vibration device is used for increasing the fluidity of the powder metallurgy material, the device is simple in structure and excellent in drying effect, and the beating device can be used for effectively preventing a filter screen from being blocked.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly introduce the drawings that are needed in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
FIG. 1 is a schematic structural view of a powder metallurgy feeding device.
Fig. 2 is a schematic view of a first state of movement of a first drive gear and a second drive gear in a powder metallurgy feeding device.
Fig. 3 is a schematic view showing a second state of movement of the first transmission gear and the second transmission gear in the powder metallurgy feeding device.
Fig. 4 is a schematic structural view of a second motor and a half wheel in a powder metallurgy feeding device.
In the figure: the drying box comprises a first box body, a first box cover, a 3-feeding opening, a 4-first motor, a 5-first belt pulley, a 6-second belt pulley, a 7-belt, an 8-first transmission rod, a 9-limit buckle, a 10-stirring blade, a 11-first limit frame, a 12-second limit frame, a 13-first transmission gear, a 14-second transmission gear, a 15-second transmission rod, a 16-base, a 17-first discharge opening, a 18-side frame, a 19-second box body, a 20-second motor, a 2001-half wheel, a 21-first limit shaft, a 22-second limit shaft, a 23-first spring, a 24-second spring, a 25-heating plate, a 26-passing hole, a 27-damping spring, a 28-third box body, a 29-second box cover, a 30-filter screen, a 31-transmission frame, a 32-hammer head, a 33-third motor, a 34-impeller, a 35-second discharge opening, a 36-pedestal, a 37-rotating frame, a 38-telescopic rod and a 39-drying box.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1-3, in an embodiment of the present invention, a feeding device for powder metallurgy includes a first box 1, a first box cover 2 is disposed above the first box 1, the first box cover 2 is detachably connected with the first box 1, a feeding hole 3 is disposed in the center of the first box cover 2, a base 16 is disposed at the bottom of the first box 1, and the first box 1 is fixedly connected with the base 16; the power device is arranged on two sides of the first box body 1 and comprises a first motor 4, the first motor 4 is detachably connected to the base 16, a first belt wheel 5 is detachably connected to an output shaft of the first motor 4, a second belt wheel 6 is arranged above the first belt wheel 5, a first transmission rod 8 is arranged on a central shaft of the second belt wheel 6, the first transmission rod 8 is rotatably connected with the side wall of the first box body 1, and a belt 7 is arranged between the first belt wheel 5 and the second belt wheel 6;
further, a stirring and scattering device is arranged in the first box body 1, the stirring and scattering device comprises a first limiting frame 11 and a second limiting frame 12, the first limiting frame 11 is hinged with the second limiting frame 12, and the hinged part of the first limiting frame 11 and the second limiting frame 12 is rotatably connected to the rear wall of the first box body 1 and externally connected with a control motor; a first transmission gear 13 is arranged at one end of the first transmission rod 8, which is close to the first limiting frame 11, the first transmission gear 13 is fixedly connected with the first transmission rod 8, and the first transmission rod 8 is rotationally connected with the first limiting frame 11; a second transmission rod 15 is arranged in the second limiting frame 12, the second transmission rod 15 is rotationally connected with the second limiting frame 12, a second transmission gear 14 is arranged at one end, close to the second limiting frame 12, of the second transmission rod 15, and the second transmission gear 14 is fixedly connected with the second transmission rod 15; the first transmission rod 8 and the second transmission rod 15 are detachably connected with a limit buckle 9, the limit buckle 9 is provided with a stirring blade 10, and the second transmission rod 15 is provided with the limit buckle 9 and the stirring blade 10; the first transmission gear 13 is meshed with the second transmission gear 14;
specifically, a drying device is arranged below the base 16, the drying device comprises a drying box 39, the drying box 39 is detachably connected with the base 16, a heating plate 25 is arranged inside the drying box 39, the heating plate 25 is detachably connected with the drying box 39, a material passing hole 26 is formed in the heating plate 25, a damping spring 27 is arranged at the bottom of the drying box 39, and the damping spring 27 is fixedly connected with the drying box 39; the right side of the drying box 39 is provided with an air suction device, the air suction device comprises a third box 28, a second box cover 29 is arranged above the third box 28, the second box cover 29 is detachably connected with the third box 28, a filter screen 30 is arranged in the second box cover 29, a beating device is arranged on one side of the filter screen 30, the beating device comprises a transmission frame 31, a hammer head 32 is arranged on the transmission frame 31, torque is transmitted between the hammer head 32 and the transmission frame 31 through a key shaft, and a control motor is arranged on one side of the transmission frame 31 far away from the hammer head 32;
in addition, a third motor 33 is arranged in the third box 28, and an impeller 34 is detachably connected to an output shaft of the third motor 33; the telescopic rod 38 is arranged below the third box 28, the telescopic rod 38 is fixedly connected with the third box 28, a pedestal 36 is arranged below the third box 28, a rotating frame 37 is arranged on the pedestal 36, an ear plate is arranged at the position, corresponding to the rotating frame 37, on the third box 28, and the rotating frame 37 is in rotating connection with the ear plate.
The working principle of the embodiment of the invention is as follows: the powder metallurgy material is introduced into the first box body 1 from the feed inlet 3, the first motor 4 drives the first belt pulley 5 to rotate, the first belt pulley 5 drives the second belt pulley 6 to rotate through the belt 7, the second belt pulley 6 drives the stirring blade 10 to rotate through the first transmission rod 8, the first transmission rod 8 drives the second transmission gear 14 to rotate through the first transmission gear 13, the second transmission gear 14 drives the stirring blade 10 to rotate through the second transmission rod 15, the angle between the second limiting frame 12 and the first limiting frame 11 can be adjusted through controlling the motor, and in the process of changing the angle between the second limiting frame 12 and the first limiting frame 11, the first transmission gear 13 and the second transmission gear 14 are always in a meshed state due to the self structure of the first transmission gear 13 and the second transmission gear 14, so that the stirring and scattering range can be greatly enlarged; the third motor 33 and the hammer 32 provide power for the device, the filter screen 30 plays a fixed role, and the control motor controls the beating device to effectively prevent the filter screen 30 from being blocked; the angle between the third box 28 and the horizontal plane can be adjusted by the telescopic rod 38 matched with the rotating frame 37; the powder metallurgy material is dried while passing through the heating plate 25.
Example 2
Referring to fig. 1 and 4, unlike embodiment 1, in the embodiment of the present invention, a vibration device is disposed on one side of the drying box 39, the vibration device includes a side frame 18, the side frame 18 is fixedly connected with the drying box 39, a second box 19 is disposed between the side frames 18, the second box 19 is a detachable structure, a first limiting shaft 21 is disposed on the second box 19, the first limiting shaft 21 is slidably connected with the side frame 18, a first spring 23 is disposed between the second box 19 and the side frame 18, and the first spring 23 is sleeved on the first limiting shaft 21; the second motor 20 is arranged inside the second box 19, a second limiting shaft 22 is arranged on the second motor 20, a second spring 24 is arranged between the second motor 20 and the second box 19, the second spring 24 is sleeved on the second limiting shaft 22, two sides of the second motor 20 are provided with half wheels 2001, and the initial installation angles of the half wheels 2001 at two sides are ninety degrees different.
The working principle of the embodiment of the invention is as follows: the second motor 20 drives the half wheel 2001 to rotate, the eccentricity of half wheel 2001 produces vibrations, half wheel 2001 drives the second motor 20 and shakes about, second motor 20 drives the second box 19 through second spring 24 and shakes, second box 19 is when vibrations, drives the side bearer 18 through first spring 23 and shakes, and then drives stoving case 39 and shake for powder metallurgy unloading is more smooth.
The electrical components are all connected with an external main controller and 220V mains supply, and the main controller can be conventional known equipment for controlling a computer and the like.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (2)
1. The utility model provides a powder metallurgy's material feeding unit, its characterized in that includes first box (1), first box (1) top is equipped with first case lid (2), first case lid (2) center is equipped with pan feeding mouth (3), first box (1) bottom is equipped with base (16), first box (1) both sides are equipped with power device, the inside stirring of first box (1) is equipped with the device of scattering, stirring the device of scattering includes first spacing (11) and second spacing (12), base (16) below is equipped with drying device, drying device includes stoving case (39), stoving case (39) right side is equipped with the device that induced drafts, one side of stoving case (39) is equipped with vibrator;
the power device comprises a first motor (4), the first motor (4) is detachably connected to the base (16), a first belt wheel (5) is detachably connected to an output shaft of the first motor (4), a second belt wheel (6) is arranged above the first belt wheel (5), a first transmission rod (8) is arranged on a central shaft of the second belt wheel (6), the first transmission rod (8) is rotatably connected with the side wall of the first box body (1), and a belt (7) is arranged between the first belt wheel (5) and the second belt wheel (6);
the first limiting frame (11) is hinged with the second limiting frame (12), and the hinged part of the first limiting frame (11) and the second limiting frame (12) is rotatably connected to the rear wall of the first box body (1) and externally connected with a control motor; one end of the first transmission rod (8) close to the first limiting frame (11) is provided with a first transmission gear (13), the first transmission gear (13) is fixedly connected with the first transmission rod (8), and the first transmission rod (8) is rotationally connected with the first limiting frame (11);
a second transmission rod (15) is arranged in the second limiting frame (12), the second transmission rod (15) is rotationally connected with the second limiting frame (12), a second transmission gear (14) is arranged at one end, close to the second limiting frame (12), of the second transmission rod (15), and the second transmission gear (14) is fixedly connected with the second transmission rod (15); the first transmission rod (8) and the second transmission rod (15) are detachably connected with limit buckles (9), stirring blades (10) are arranged on the limit buckles (9), and the second transmission rod (15) is provided with limit buckles (9) and the stirring blades (10); the first transmission gear (13) is meshed with the second transmission gear (14);
the drying box (39) is detachably connected with the base (16), a heating plate (25) is arranged in the drying box (39), the heating plate (25) is detachably connected with the drying box (39), a material passing hole (26) is formed in the heating plate (25), a damping spring (27) is arranged at the bottom of the drying box (39), and the damping spring (27) is fixedly connected with the drying box (39);
the air suction device comprises a third box body (28), a second box cover (29) is arranged above the third box body (28), the second box cover (29) is detachably connected with the third box body (28), a filter screen (30) is arranged in the second box cover (29), a beating device is arranged on one side of the filter screen (30), the beating device comprises a transmission frame (31), a hammer head (32) is arranged on the transmission frame (31), torque is transmitted between the hammer head (32) and the transmission frame (31) through a key shaft, and a control motor is arranged on one side, far away from the hammer head (32), of the transmission frame (31);
the vibrating device comprises side frames (18), the side frames (18) are fixedly connected with the drying box (39), a second box body (19) is arranged between the side frames (18), the second box body (19) is of a detachable structure, a first limiting shaft (21) is arranged on the second box body (19), the first limiting shaft (21) is in sliding connection with the side frames (18), a first spring (23) is arranged between the second box body (19) and the side frames (18), and the first spring (23) is sleeved on the first limiting shaft (21); the novel electric bicycle is characterized in that a second motor (20) is arranged inside the second box body (19), a second limiting shaft (22) is arranged on the second motor (20), a second spring (24) is arranged between the second motor (20) and the second box body (19), the second spring (24) is sleeved on the second limiting shaft (22), half wheels (2001) are arranged on two sides of the second motor (20), and the initial installation angles of the half wheels (2001) are ninety degrees different.
2. The powder metallurgy feeding device according to claim 1, wherein a third motor (33) is arranged in the third box body (28), and an impeller (34) is detachably connected to an output shaft of the third motor (33); the utility model discloses a novel refrigerator is characterized in that a telescopic rod (38) is arranged below the third box body (28), the telescopic rod (38) is fixedly connected with the third box body (28), a pedestal (36) is arranged below the third box body (28), a rotating frame (37) is arranged on the pedestal (36), an ear plate is arranged at the position of the third box body (28) corresponding to the rotating frame (37), and the rotating frame (37) is rotationally connected with the ear plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350926.5A CN113976883B (en) | 2020-11-27 | 2020-11-27 | Powder metallurgy's material feeding unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350926.5A CN113976883B (en) | 2020-11-27 | 2020-11-27 | Powder metallurgy's material feeding unit |
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| Publication Number | Publication Date |
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| CN113976883A CN113976883A (en) | 2022-01-28 |
| CN113976883B true CN113976883B (en) | 2023-05-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011350926.5A Active CN113976883B (en) | 2020-11-27 | 2020-11-27 | Powder metallurgy's material feeding unit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH431388A (en) * | 1965-11-18 | 1967-02-28 | Aeromatic Ag | Drying apparatus |
| CN206240362U (en) * | 2016-11-14 | 2017-06-13 | 南阳市天华制药有限公司 | A kind of industrial chemicals agitation mixer for being convenient for drying and processing |
| CN107775008A (en) * | 2017-09-30 | 2018-03-09 | 广东天高科技有限公司 | A kind of processing technology of glass putty |
| CN209791731U (en) * | 2019-01-09 | 2019-12-17 | 贵州工程应用技术学院 | Reducing mechanism of metal powder briquetting |
| CN210023773U (en) * | 2019-05-31 | 2020-02-07 | 湘潭新云科技有限责任公司 | Powder metallurgy's material feeding unit |
| CN110788339A (en) * | 2019-11-27 | 2020-02-14 | 常德天和粉末冶金有限公司 | Metal powder block scattering device |
| CN211575755U (en) * | 2020-01-13 | 2020-09-25 | 临安顶谷云雾茶业有限公司 | Tealeaves stoving flour mill |
-
2020
- 2020-11-27 CN CN202011350926.5A patent/CN113976883B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH431388A (en) * | 1965-11-18 | 1967-02-28 | Aeromatic Ag | Drying apparatus |
| CN206240362U (en) * | 2016-11-14 | 2017-06-13 | 南阳市天华制药有限公司 | A kind of industrial chemicals agitation mixer for being convenient for drying and processing |
| CN107775008A (en) * | 2017-09-30 | 2018-03-09 | 广东天高科技有限公司 | A kind of processing technology of glass putty |
| CN209791731U (en) * | 2019-01-09 | 2019-12-17 | 贵州工程应用技术学院 | Reducing mechanism of metal powder briquetting |
| CN210023773U (en) * | 2019-05-31 | 2020-02-07 | 湘潭新云科技有限责任公司 | Powder metallurgy's material feeding unit |
| CN110788339A (en) * | 2019-11-27 | 2020-02-14 | 常德天和粉末冶金有限公司 | Metal powder block scattering device |
| CN211575755U (en) * | 2020-01-13 | 2020-09-25 | 临安顶谷云雾茶业有限公司 | Tealeaves stoving flour mill |
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| CN113976883A (en) | 2022-01-28 |
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