CN209869482U - Powder briquetting device for pre-vacuum quantitative experiment - Google Patents
Powder briquetting device for pre-vacuum quantitative experiment Download PDFInfo
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- CN209869482U CN209869482U CN201821877789.9U CN201821877789U CN209869482U CN 209869482 U CN209869482 U CN 209869482U CN 201821877789 U CN201821877789 U CN 201821877789U CN 209869482 U CN209869482 U CN 209869482U
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- 239000000843 powder Substances 0.000 title claims abstract description 63
- 238000002474 experimental method Methods 0.000 title claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 238000003825 pressing Methods 0.000 claims abstract description 28
- 238000007493 shaping process Methods 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 3
- 238000001914 filtration Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 18
- 238000000465 moulding Methods 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 206010063659 Aversion Diseases 0.000 claims 5
- 210000001951 dura mater Anatomy 0.000 claims 5
- 238000006073 displacement reaction Methods 0.000 claims 3
- 230000001174 ascending effect Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 claims 1
- 239000012982 microporous membrane Substances 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 239000013618 particulate matter Substances 0.000 claims 1
- 230000000452 restraining effect Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 230000001629 suppression Effects 0.000 claims 1
- 210000005239 tubule Anatomy 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000009423 ventilation Methods 0.000 description 5
- 239000004484 Briquette Substances 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides a preliminary vacuum ration experiment powder briquetting device, characterized by: the device is including fixed pallet, the movable base and the shaping sleeve of shaping part are retrained to spacing sheath on its basement platform, hold the experiment powder of standard weight in the shaping sleeve, the shaping pressure disk cooperation that has the pressing part directly over the shaping sleeve is installed in the shaping sleeve, not only sealed evacuation but also can slide from top to bottom to the experiment powder press forming of inside, manometer is connected to shaping pressure disk both sides, stop valve and evacuation pump, the shaping pressure shaft that is connected with the area rack that shifts on the shaping pressure disk passes the top platform of fixed pallet and the fixing bearing of middle platform can reciprocate, it is the standard briquetting to have the rotatory and experiment powder shaping in the whole pressing part that moves from top to bottom of transmission drive shift gear on the middle platform to drive the pressing part under the effect of shifting rack to press the shaping part. The beneficial effects of the utility model are that the experiment dust that has satisfied basis weight does not have the fashioned needs of crack when the volume determination.
Description
Technical Field
The utility model provides a powder briquetting device for forevacuum quantitative experiment.
Background
In scientific experiments in the fields of environmental science, military medicine, material science and the like, a briquetting and forming device capable of quantifying dry and difficultly agglomerated powder materials is required, for example, KCL crystal blocks are required in electrolyte and are slowly dissolved to reach a saturated state, the method generally adopted in the prior art is to manufacture a clamp according to the volume shape of a required dust briquette, pour the powder materials into the clamp and manually press the briquette for forming, the method is completely manually completed, the manufacturing process is complex and is interfered by external pollution, the density of powder formed by briquetting is inconsistent due to incomplete consistency of manual force, gaps exist in the middle, the size of the gaps is inconsistent, the corners of the powder briquette are scattered and the middle of the powder briquette is broken due to overlarge gaps, the experimental results are directly influenced, the volume measurement precision is low, and the data are inaccurate, can not meet the requirements of the current scientific research, thereby restricting the development of the related scientific research. Therefore, the development of an experimental device for quantitative experiment of gapless formation of powder in volume measurement is an urgent need.
Disclosure of Invention
In order to solve the problem, the utility model aims at providing a preliminary vacuum ration experiment powder briquetting forming device, sealed evacuation is automatic to be pressed the inside experiment powder of shaping sleeve into standard briquetting, has satisfied the experiment dust of basis weight and has not had the fashioned needs of crack when the volumetric determination.
In order to achieve the above purpose, the technical scheme adopted by the utility model is to provide a powder briquetting device for a pre-vacuum quantitative experiment, which comprises a fixed stand, the movable base and the forming sleeve of forming part are restrained by the limiting sheath on the base platform, the experiment powder of standard weight is placed in the forming sleeve, the forming pressure plate of the forming part is arranged in the forming sleeve in a matched mode, the forming pressure plate is sealed and vacuumized and can slide up and down to perform press forming on the experiment powder inside, pressure gauges are connected to two sides of the forming pressure plate, a stop valve and a vacuum pump are connected, a forming pressure shaft with a shifting rack is connected onto the forming pressure plate, penetrates through a top platform of a fixing support and a fixing bearing of a middle platform and can move up and down, a transmission device is arranged on the middle platform and drives the shifting gear to rotate and drives the whole pressing part to move up and down under the action of the shifting rack, and the experiment powder in the pressing forming part.
The beneficial effects of the utility model are that a vacuum ration experiment powder briquetting device in advance has been developed, has satisfied the experiment dust of basis weight and has not had the fashioned needs of crack when the volume determination.
Drawings
FIG. 1 is the utility model discloses equipment of vacuum quantitative experiment powder briquetting device's schematic structure
In the figure:
1. forming press shaft 2, fixing bearing 3, shifting rack 4, connecting shaft lever 5, shifting gear 6, pressing component 7 and stop valve
8. Vacuum pump 9, pumping pipeline 10, exhaust port 11, vent channel 12, powder filtering hard film 13, forming part 14 and experimental powder
15. The device comprises a movable base 16, a base platform 17, a sealing rubber gasket 18, a rubber gasket inner groove 19, a limiting sheath 20, a fixed stand 21, a stand plate 22, a forming sleeve 23, a vacuum area 24, a forming pressure plate 25, a pressure gauge 26, a transmission turbine 27, a small transmission wheel 28, an intermediate platform 29, a transmission device 30, a driving motor 31, a large transmission wheel 32, a transmission belt 33, a transmission worm 34, a shaft rod support 35 and a top platform.
Detailed Description
The present invention will be described with reference to the accompanying drawings and examples.
As shown in the attached drawings, the utility model provides a powder briquetting device for preliminary vacuum quantitative experiment, the device comprises a fixed stand 20, the fixed stand 20 is a smooth and flat three-layer support stand made of rigid material, the bottom is a base platform 16 which can be stably placed on any operation table, one side of the base platform 16 is vertically connected with a stand vertical plate 21 which supports a middle platform 28 and a top platform 35 which are parallel with the bottom platform, a limit sheath 19 is arranged in the middle of the upper surface of the base platform 16, the size and shape of the limit sheath can just restrain the stable and immovable forming component 13, a fixed bearing 2 with concentric positions is arranged in the middle of one side of the top platform 35 and the middle platform 28, the forming press shaft 1 of the pressing component 6 can freely pass through and can move up and down in the fixed bearing 2, a driving motor 30 is also arranged on the upper surface of the middle platform 28, a shaft rod bracket 34 which is arranged perpendicular to the upper surface of the middle platform 28 is arranged near the fixed bearing 2, and the middle of the shaft rod bracket 34 is provided with the fixed bearing 2 for supporting the connecting shaft rod 4; the forming part 13 is made of rigid material, it is made up of forming bush 22 and movable base 15, the forming bush 22 of upper portion of forming part 13 is installed on movable base 15 through the peripheral mechanical thread fit of its lower end, the movable base 15 is a spiral cover with inner edge mechanical thread that the opening is placed upwards, its external form and size can cooperate to put in the spacing sheath 19 in the middle of upper surface of the base platform 16 to be restrained and stabilized motionless, the forming bush 22 is a cylindrical cavity with hard and smooth inner wall and open upper and lower ends, its internal upper surface is smooth, there is a ring of cushion internal grooves 18 to mount the sealing cushion 17 below the inner edge mechanical thread, compress the sealing cushion and achieve the sealed effect after the peripheral mechanical thread of the forming bush 22 cooperates with inner edge mechanical thread of the movable base 15 and screws; the inner surfaces of the forming sleeve 22 and the movable base 15 are flat and smooth, and can contain experimental powder 14 with a certain standard weight, a pressing part 6 is arranged right above the forming sleeve 22, the pressing part 6 is a mechanical device made of rigid materials, a forming pressure plate 24 with a smooth and thick outer surface and a disc shape is arranged below the pressing part, the outer diameter of the forming pressure plate 24 is just equal to the inner diameter of the forming sleeve 22 and is tightly matched with the inner diameter of the forming sleeve 22, the forming pressure plate not only can be hermetically pumped into a vacuum area 23, but also can slide up and down to press and form the internal experimental powder 14, two sides of the forming pressure plate 24 are respectively provided with a vent channel 11 with a powder filtering hard film 12 at the lower end, one vent channel 11 is connected with a pressure gauge 25, the other vent channel 11 is connected with a stop valve 7 and a vacuum pumping pump 8 through an air exhaust pipeline 9, the vacuum pumping pump 8 is, a mechanical thread is arranged in a groove at the lower side, a circle of powder filtering hard film 12 with the mechanical thread at the periphery is screwed and fixed at the lower side of a ventilation pore channel 11 of a forming pressure plate 24, the powder filtering hard film 12 is a ventilation round box which is supported by a rigid material at the outer part and is filled with a filtering material, a special microporous film material for filtering tiny dust is filled in the powder filtering hard film 12, tiny particles can be filtered and ventilation can be kept, ventilation pores are distributed on the upper surface and the lower surface of the powder filtering hard film 12, and when gas freely passes through the powder filtering hard film 12, the experimental powder 14 is blocked in the forming sleeve 22 and cannot be lost; the center of a circle on the upper portion of the forming pressure plate 24 is connected with a vertical upward cylindrical forming pressure shaft 1, the forming pressure shaft 1 penetrates through the inside of a fixed bearing 2 installed on a top platform 35 and a middle platform 28, the forming pressure shaft 1 drives a pressing part 6 to freely penetrate through and to move up and down slidably, a rack groove is carved on the front side of the forming pressure shaft 1, a shifting rack 3 is inlaid in the rack groove, the shifting rack 3 is meshed with a shifting gear 5, and the forming pressure plate 24 is controlled to move up and down under the driving of the shifting gear 5 and the shifting rack 3; the middle platform 28 is provided with a transmission device 29, the transmission device 29 is a linkage mechanical device which is arranged on the upper surface of the middle platform 28 and sequentially consists of a driving motor 30, a large driving wheel 31, a driving belt 32, a small driving wheel 27, a driving worm 33, a driving turbine 26, a connecting shaft rod 4 and a shifting gear 5, a stepping driving motor 30 capable of controlling the rotating speed and the working time is arranged on one side edge of the middle platform 28, the large driving wheel 31 which is arranged on the shaft of the driving motor 30 is connected with the small driving wheel 27 through the driving belt 32, the driving worm 33 which is coaxially connected with the small driving wheel 27 drives the driving turbine 26 when rotating, the driving turbine 26 transmits the rotating energy to the shifting gear 5 through the connecting shaft rod 4 which is arranged on a shaft rod bracket 34, the shifting gear 5 moves relative to the shifting rack 3 which is meshed with the shifting gear 5 when rotating, and the shifting gear 5 and the shifting rack 3 are driven to control the forming pressure plate 24 to move up and down so as The piece 6 moves up and down to press and form the experimental powder 14 contained in the forming part 13 into a standard pressed block.
Example (b):
before the powder briquetting device for the pre-vacuum quantitative experiment is applied, the physical and chemical properties of the experimental powder 14 used in the experiment should be known at first, and the rotating speed and the working time of the driving motor 30 are determined according to the properties of the experimental powder to realize gapless forming; then, filling a certain amount of experimental powder 14 into the forming sleeve 22 according to the experimental requirements, and covering the forming pressure plate 24; switching on the power supplies of the vacuum pumping pump 8 and the driving motor 30, and setting the rotating speed and the working time of the driving motor 30; then, the driving motor 30 and the vacuum pump 8 start to work simultaneously; opening a stop valve 7 connected with an air extraction pipeline 9, wherein the outer diameter of a forming pressure plate 24 is just equal to the inner diameter of a forming sleeve 22 and is tightly matched with the inner diameter of the forming sleeve 22, the vacuum extraction pump 8 gradually extracts the sealed area into a vacuum area 23, a powder filtering hard film 12 is a breathable round box which is externally provided with a rigid material support and internally filled with a filtering material, a special microporous film material for filtering tiny dust is filled in the powder filtering hard film 12 and can filter tiny particles and keep ventilation, the upper surface and the lower surface of the powder filtering hard film 12 are fully provided with breathable small holes, when gas freely passes through the powder filtering hard film 12, the experimental powder 14 is blocked in the forming sleeve 22 and cannot be dissipated, the indication of a pressure gauge 25 is observed at any time, when the pressure is lower than one atmospheric pressure, the stop valve 7 is closed, and the vacuum extraction pump 8 stops; meanwhile, a large transmission wheel 31 arranged on a shaft of a driving motor 30 is connected with a small driving wheel 27 through a transmission belt 32, a transmission worm 33 coaxially connected with the small driving wheel 27 drives a transmission turbine 26 when rotating, the transmission turbine 26 transmits the rotating energy to a shifting gear 5 through a connecting shaft rod 4 arranged on a shaft rod support 34, the shifting gear 5 moves relative to a meshed shifting rack 3 when rotating, a forming pressing shaft 1 drives a pressing part 6 to freely penetrate through and move up and down smoothly, a rack groove is carved on the front surface of the forming pressing shaft 1, and the shifting rack 3 is embedded inside, the forming pressure plate 24 is controlled to move up and down under the driving of the shifting gear 5 and the shifting rack 3 so as to drive the forming pressure shaft 1 and the whole pressing part 6 to move up and down, pressing and molding the quantitative experimental powder 14 contained in the molding part 13 which is vacuumized into a standard pressing block; and (3) closing the power supply of the vacuum pumping pump 8 and the driving motor 30, opening the forming pressure plate 24, taking out the quantitative experiment powder pressing block for other experiments, and wiping off all parts in the forming sleeve 22 and the forming pressure plate 24 to prepare for next application.
Claims (6)
1. The utility model provides a quantitative experiment powder briquetting forming device in advance in vacuum which characterized by: the device comprises a fixed stand (20), the bottommost part of the fixed stand is a base platform (16), a stand vertical plate (21) at one side of the base platform (16) supports a middle platform (28) and a top platform (35), a limiting sheath (19) is arranged in the middle of the base platform (16) to accommodate and restrain a forming part (13), a forming sleeve (22) at the upper part of the forming part (13) is arranged on a movable base (15), the movable base (15) is arranged in the limiting sheath (19) on the base platform (16) and is stable and immovable, the inner surfaces of the forming sleeve (22) and the movable base (15) are flat and smooth and can contain experimental powder (14) with certain standard weight, a pressing part (6) is arranged right above the forming sleeve (22), and the outer diameter of a forming pressure plate (24) at the lower part of the pressing part is exactly equal to the inner diameter of the forming sleeve (22) and is tightly matched with the inner diameter of the forming sleeve (22) and arranged, the experimental powder body (14) can be pressed and molded by sliding up and down after being sealed and pumped into a vacuum area (23), two sides of a molding pressure plate (24) are respectively provided with a vent hole (11) with a powder filtering hard film (12), one vent hole (11) is connected with a pressure gauge (25), the other vent hole (11) is connected with a stop valve (7) and a vacuum pump (8) through an air suction pipeline (9), the upper part of the molding pressure plate (24) is connected with a molding pressure shaft (1) with a front surface engraved with a rack groove and a displacement rack (3) embedded inside, the molding pressure shaft (1) passes through a fixed bearing (2) arranged on a top platform (35) and a middle platform (28) to enable a molding pressure shaft (1) to drive a pressing part (6) to freely pass through and move up and down, a transmission device (29) is arranged on the middle platform (28), when a driving motor (30) starts, the transmission device (29) drives a displacement gear (5) to rotate and move relative to the engaged displacement rack, the forming pressure plate (24) is controlled to move up and down under the driving of the shifting gear (5) and the shifting rack (3), so that the forming pressure shaft (1) and the whole pressing part (6) are driven to move up and down.
2. The powder briquetting device for the preliminary vacuum quantitative experiment of claim 1, wherein: the fixed stand (20) is a smooth and flat three-layer support stand made of rigid materials, the bottommost part of the fixed stand is a base platform (16) which can be stably placed on any operation table top, a limiting sheath (19) is arranged in the middle of the upper surface of the base platform (16), the size and the shape of the limiting sheath are just right suitable for containing and restraining a forming part (13) to be stable and immovable, one side of the base platform (16) is vertically and directly connected with a stand vertical plate (21) to support a middle platform (28) and a top platform (35) which are parallel to the bottom platform, a fixed bearing (2) with concentric positions is arranged in the middle of one side of the top platform (35) and the middle of the middle platform (28), a forming pressing shaft (1) of a pressing part (6) can freely penetrate through and can move up and down, a driving motor (30) is further arranged on the upper surface of the middle platform (28), and a support which is arranged close to the fixed bearing (2) and is vertical to the upper surface of the (34) The middle of the shaft lever bracket (34) is provided with a fixed bearing (2) for supporting the connecting shaft lever (4).
3. The powder briquetting device for the preliminary vacuum quantitative experiment of claim 1, wherein: the forming part (13) is made of rigid material and consists of a forming sleeve (22) and a movable base (15), the forming sleeve (22) at the upper part is a cylindrical cavity with a hard and smooth inner wall and an open upper end and a open lower end, the forming sleeve (22) is arranged on the movable base (15) through the matching of mechanical threads at the periphery of the lower end of the forming sleeve, the movable base (15) is a spiral cover with an inner side mechanical thread and an upward opening, the external shape and the size of the limiting sheath can be matched and arranged in a limiting sheath (19) in the middle of the upper surface of the base platform (16) to be restrained and stably fixed, the upper surface of the inner part of the rubber gasket is flat and smooth, a circle of rubber gasket inner grooves (18) are arranged below the mechanical thread close to the inner edge and can be provided with sealing rubber gaskets (17), when the peripheral mechanical thread of the forming sleeve (22) is matched and screwed with the inner side mechanical thread of the movable base (15), the sealing rubber gasket is pressed tightly to achieve the sealing effect.
4. The powder briquetting device for the preliminary vacuum quantitative experiment of claim 1, wherein: the pressing part (6) is a mechanical device made of rigid materials, the lower side of the pressing part is a forming pressure plate (24) with a smooth and thick outer surface and a disc shape, the forming pressure plate (24) is tightly matched and installed inside a forming sleeve (22), two sides of the forming pressure plate (24) are respectively provided with a vent hole (11) with a powder filtering hard film (12) at the lower end, the vent hole (11) is provided with a groove below a tubule, a mechanical thread is arranged in the groove at the lower side to tightly fix the powder filtering hard film (12) with the mechanical thread at the periphery to the lower side of the vent hole (11) of the forming pressure plate (24), one vent hole (11) is connected with a pressure gauge (25), the other vent hole (11) is connected with a stop valve (7) and a vacuum pumping pump (8) through a pumping pipeline (9), and the vacuum pump (8) is; the centre of a circle position on shaping pressure disk (24) upper portion connects a vertical ascending columniform shaping last item (1), shaping last item (1) passes the inside of top platform (35) and fixing bearing (2) of middle platform (28) installation, let shaping last item (1) drive suppression part (6) freely pass and can be slided fast reciprocate, the rack recess has been carved with in the front of shaping last item (1), inside inlays has aversion rack (3), aversion rack (3) and aversion gear (5) meshing, control shaping pressure disk (24) and reciprocate under the drive of aversion gear (5) and aversion rack (3).
5. The powder briquetting device for the preliminary vacuum quantitative experiment of claim 1, wherein: the transmission device (29) is a linkage mechanical device which is arranged on the upper surface of the middle platform (28) and sequentially consists of a driving motor (30), a large transmission wheel (31), a transmission belt (32), a small transmission wheel (27), a transmission worm rod (33), a transmission turbine (26), a connecting shaft rod (4) and a shifting gear (5), a stepping type driving motor (30) capable of controlling the rotating speed and the working time is arranged on one side edge of the middle platform (28), the large transmission wheel (31) is arranged on the shaft of the driving motor (30) and is connected with the small transmission wheel (27) through the transmission belt (32), the transmission worm rod (33) coaxially connected with the small transmission wheel (27) drives the transmission turbine (26) when rotating, and the transmission turbine (26) transmits the rotating energy to the shifting gear (5) through the connecting shaft rod (4) arranged on the shaft rod support (34), when the shifting gear (5) rotates, the shifting gear and the meshed shifting rack (3) move relatively to drive the molding press shaft (1) and the whole pressing part (6) to move up and down to press and mold the experimental powder (14) contained in the molding part (13) into a standard pressing block.
6. The powder briquetting device for the preliminary vacuum quantitative experiment of claim 1, wherein: strain powder dura mater (12) and be that an outside has the inside ventilative circle box of filling with filtering material of rigid material support, strain powder dura mater (12) periphery round have mechanical screw can screw fix in the recess of the pore of ventilating (11) lower limit of shaping pressure disk (24), the special microporous membrane material of filtering the small dust of straining powder dura mater (12) inside packing can filter small particulate matter and keep ventilative, strain powder dura mater (12) upper and lower surface and be covered with ventilative aperture, when gas freely leads to when filtering powder dura mater (12) experiment powder (14) by the separation can not scatter and disappear in shaping sleeve (22) inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821877789.9U CN209869482U (en) | 2018-11-15 | 2018-11-15 | Powder briquetting device for pre-vacuum quantitative experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821877789.9U CN209869482U (en) | 2018-11-15 | 2018-11-15 | Powder briquetting device for pre-vacuum quantitative experiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209869482U true CN209869482U (en) | 2019-12-31 |
Family
ID=68946457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821877789.9U Withdrawn - After Issue CN209869482U (en) | 2018-11-15 | 2018-11-15 | Powder briquetting device for pre-vacuum quantitative experiment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209869482U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109177290A (en) * | 2018-11-15 | 2019-01-11 | 天津开发区合普工贸有限公司 | Forevacuum quantitative experiment powder compound stalk forming device |
| CN111452415A (en) * | 2020-03-27 | 2020-07-28 | 戴辉乾 | Corn straw device is wrapped up in to tea bran cake |
| CN114354313A (en) * | 2021-12-29 | 2022-04-15 | 云南华测检测认证有限公司 | Food detection device with built-in pretreatment structure |
-
2018
- 2018-11-15 CN CN201821877789.9U patent/CN209869482U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109177290A (en) * | 2018-11-15 | 2019-01-11 | 天津开发区合普工贸有限公司 | Forevacuum quantitative experiment powder compound stalk forming device |
| CN109177290B (en) * | 2018-11-15 | 2024-02-27 | 天津开发区合普工贸有限公司 | Powder briquetting and forming device for pre-vacuum quantitative experiment |
| CN111452415A (en) * | 2020-03-27 | 2020-07-28 | 戴辉乾 | Corn straw device is wrapped up in to tea bran cake |
| CN114354313A (en) * | 2021-12-29 | 2022-04-15 | 云南华测检测认证有限公司 | Food detection device with built-in pretreatment structure |
| CN114354313B (en) * | 2021-12-29 | 2023-12-26 | 云南华测检测认证有限公司 | Food detection device with built-in pretreatment structure |
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