CN117664656B - Semi-manufactured goods inspection sampling device is used in maize starch production - Google Patents
Semi-manufactured goods inspection sampling device is used in maize starch production Download PDFInfo
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- CN117664656B CN117664656B CN202410144030.3A CN202410144030A CN117664656B CN 117664656 B CN117664656 B CN 117664656B CN 202410144030 A CN202410144030 A CN 202410144030A CN 117664656 B CN117664656 B CN 117664656B
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- 238000005070 sampling Methods 0.000 title claims abstract description 133
- 229920002261 Corn starch Polymers 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000007689 inspection Methods 0.000 title claims abstract description 23
- 235000019759 Maize starch Nutrition 0.000 title description 2
- 239000008120 corn starch Substances 0.000 claims abstract description 36
- 239000011265 semifinished product Substances 0.000 claims abstract description 23
- 230000000630 rising effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 5
- 229920002472 Starch Polymers 0.000 claims description 8
- 235000019698 starch Nutrition 0.000 claims description 8
- 239000008107 starch Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
Classifications
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a semi-finished product inspection sampling device for corn starch production, which relates to the technical field of corn starch sampling and comprises a fixed outer barrel, wherein the inside of the fixed outer barrel is connected with a sampling column in a sliding manner, the top end of the sampling column is fixedly connected with a lifting column, the top end of the lifting column is connected with a top plate, the top plate is connected with a sampling driving assembly, the outside of the fixed outer barrel is fixedly connected with an outer mounting seat, and one side of the outer mounting seat is fixedly connected with a mounting frame; the sampling driving assembly comprises a driving column arranged above the mounting frame, the bottom end of the top plate is fixedly connected with a rising toothed plate and a falling toothed plate, the sampling driving assembly can carry out multi-region sampling on semi-finished corn starch in the corn starch production container by arranging the sampling column, a plurality of side sampling grooves and a sampling input pipe, sampling data are rich, automatic negative pressure suction and automatic high pressure discharge in the sampling process can be realized by arranging the sampling driving assembly, and the sampling device has the advantages of high automation degree and convenience in use for sampling corn starch.
Description
Technical Field
The invention relates to the technical field of corn starch sampling, in particular to a semi-finished product inspection sampling device for corn starch production.
Background
In the production process of corn starch, sampling and sampling inspection are needed for corn starch semi-finished products on a production line, such as sampling quality inspection for coarse-ground or fine-ground starch particles, detecting whether the particle size after grinding meets the requirements, and detecting whether foreign particles, equipment scrap iron and other unknown impurities exist in the production process.
At present, most corn starch production lines sample by using a simple spoon, the semi-finished starch is filled in the spoon and then poured into a test vessel, and the semi-finished starch is sent to a test room for sampling quality inspection. In the mode, when the sample is sampled, on one hand, the sample is extremely easy to spill and is inconvenient to clean; on the other hand, the corn starch container is inconvenient to rapidly sample at multiple points, and needs to be improved.
Disclosure of Invention
The invention provides a semi-finished product inspection sampling device for corn starch production, which solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The semi-finished product inspection sampling device for corn starch production comprises a fixed outer barrel, wherein the inside of the fixed outer barrel is connected with a sampling column in a sliding manner, the top end of the sampling column is fixedly connected with a lifting column, the top end of the lifting column is connected with a top plate, the top plate is connected with a sampling driving assembly, the outside of the fixed outer barrel is fixedly connected with an outer mounting seat, and one side of the outer mounting seat is fixedly connected with a mounting rack;
The sampling driving assembly comprises a driving column arranged above the mounting frame, the bottom end of the top plate is fixedly connected with a rising toothed plate and a falling toothed plate, the rising toothed plate and the falling toothed plate are respectively positioned at two sides of the driving column, two sections of driving teeth are arranged at one side of the outer part of the driving column, and the driving teeth are in meshed connection with the rising toothed plate and the falling toothed plate;
the lifting column is connected with the rotary driving assembly, the rotary driving assembly comprises a hydraulic rod fixedly arranged at the bottom end of the top plate, the telescopic end of the hydraulic rod is fixedly connected with a movable toothed bar, the outer side of the top end of the lifting column is coaxially and fixedly connected with a driven toothed sleeve, and the movable toothed bar is positioned at one side of the driven toothed sleeve and is in meshed connection with the driven toothed sleeve;
The side edge of the lower part of the sampling column is provided with a plurality of side sampling grooves from top to bottom, the sampling column is internally and coaxially provided with a central groove in a penetrating way, the side sampling grooves are communicated with the central groove, a central air pipe is rotationally connected in the central groove and is coaxially and fixedly connected with the fixed outer cylinder, one side of the lower part of the central air pipe is provided with a plurality of air blowing ports from top to bottom, and one side of the upper part of the central air pipe is provided with a plurality of negative pressure ports from top to bottom;
The pneumatic sampling mechanism is connected to the sampling post, pneumatic sampling mechanism is including fixing the lift section of thick bamboo that sets up in the roof bottom, and sliding connection has the piston board in the lift section of thick bamboo, the bottom fixed connection dead lever of piston board, dead lever and mounting bracket fixed connection, the top fixedly connected with gas-supply pipe of roof, the central authorities 'groove runs through the lift post, and the gas-supply pipe is linked together with central authorities' groove, lift section of thick bamboo.
As a preferable technical scheme of the invention, one side of the mounting frame is fixedly connected with the motor frame, the motor frame is fixedly connected with the driving motor, and an output shaft of the driving motor is coaxially and fixedly connected with the driving column.
As a preferable technical scheme of the invention, the lifting toothed plate and the descending toothed plate penetrate through the mounting frame and are in sliding connection with the mounting frame, and return springs are fixedly connected between the lifting toothed plate and the mounting frame and between the lifting toothed plate and the descending toothed plate.
As a preferable technical scheme of the invention, the outside of the driving column is rotationally connected with the mounting sleeve, the bottom end of the mounting sleeve is fixedly connected with the mounting rod, and the mounting rod is fixedly connected with the mounting frame.
As a preferable technical scheme of the invention, the bottom end of the top plate is fixedly connected with the guide sleeve, and the movable toothed bar penetrates through the guide sleeve and is in sliding connection with the guide sleeve.
As a preferable technical scheme of the invention, a side sampling port corresponding to the side sampling groove is arranged outside the fixed outer cylinder, and a plurality of sampling input pipes are fixedly arranged on one side of the upper part of the fixed outer cylinder.
As a preferable technical scheme of the invention, the driving teeth are arc-shaped tooth sections.
The invention has the following advantages: according to the invention, the semi-finished corn starch in the corn starch production container can be subjected to multi-region sampling by arranging the sampling column, the plurality of side sampling grooves and the sampling input pipe, the sampling data are rich, the automatic negative pressure suction and the automatic high pressure discharge in the sampling process can be realized by arranging the sampling driving assembly, and the corn starch sampling device has the advantages of high automation degree and convenience in use.
Drawings
Fig. 1 is a schematic perspective view of a semi-finished product inspection sampling device for corn starch production.
Fig. 2 is a schematic diagram of the front structure of the sampling driving assembly in the semi-finished product inspection sampling device for corn starch production.
Fig. 3 is a schematic view of the rear structure of the sampling driving assembly in the semi-finished product inspection sampling device for corn starch production.
Fig. 4 is a schematic diagram of the bottom structure of the sampling driving assembly in the semi-finished product inspection sampling device for corn starch production.
Fig. 5 is a schematic perspective sectional structure of a fixed outer cylinder in a semi-finished product inspection sampling device for corn starch production.
Fig. 6 is a schematic diagram of a three-dimensional cross-sectional structure of a lifting cylinder in a semi-finished product inspection sampling device for corn starch production.
Fig. 7 is a schematic perspective sectional structure of a central air pipe in a semi-finished product inspection sampling device for corn starch production.
In the figure: 1. fixing the outer cylinder; 2. an outer mounting base; 3. a mounting frame; 4. a side sampling port; 5. sampling an input pipe; 6. a sampling column; 7. lifting columns; 8. a top plate; 9. a sampling drive assembly; 10. a motor frame; 11. a driving motor; 12. a mounting sleeve; 13. a mounting rod; 14. a drive column; 15. lifting the toothed plate; 16. lowering the toothed plate; 17. a fixed rod; 18. a lifting cylinder; 19. a gas pipe; 20. a drive tooth; 21. moving the toothed bar; 22. a guide sleeve; 23. a passive gear sleeve; 24. a hydraulic rod; 25. a return spring; 26. a side sampling groove; 27. a piston plate; 28. a central air tube; 29. an air blowing port; 30. and a negative pressure port.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
It should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-7, a semi-finished product inspection sampling device for corn starch production comprises a fixed outer barrel 1, wherein the inside of the fixed outer barrel 1 is in sliding connection with a sampling column 6, the top end of the sampling column 6 is fixedly connected with a lifting column 7, the top end of the lifting column 7 is connected with a top plate 8, the top plate 8 is connected with a sampling driving assembly 9, the outside of the fixed outer barrel 1 is fixedly connected with an outer mounting seat 2, and one side of the outer mounting seat 2 is fixedly connected with a mounting frame 3;
The sampling driving assembly 9 comprises a driving column 14 arranged above the mounting frame 3, the bottom end of the top plate 8 is fixedly connected with a lifting toothed plate 15 and a descending toothed plate 16, the lifting toothed plate 15 and the descending toothed plate 16 are respectively positioned on two sides of the driving column 14, two sections of driving teeth 20 are arranged on one side of the outer part of the driving column 14, and the driving teeth 20 are in meshed connection with the lifting toothed plate 15 and the descending toothed plate 16;
the lifting column 7 is connected with a rotary driving assembly, the rotary driving assembly comprises a hydraulic rod 24 fixedly arranged at the bottom end of the top plate 8, a telescopic end of the hydraulic rod 24 is fixedly connected with a movable toothed bar 21, the outer side of the top end of the lifting column 7 is coaxially and fixedly connected with a driven toothed sleeve 23, and the movable toothed bar 21 is positioned at one side of the driven toothed sleeve 23 and is meshed with the driven toothed sleeve 23;
The side of the lower part of the sampling column 6 is provided with a plurality of side sampling grooves 26 from top to bottom, the sampling column 6 is internally and coaxially provided with a central groove in a penetrating way, the side sampling grooves 26 are communicated with the central groove, a central air pipe 28 is rotationally connected with the central groove, the central air pipe 28 is coaxially and fixedly connected with the fixed outer cylinder 1, one side of the lower part of the central air pipe 28 is provided with a plurality of air blowing ports 29 from top to bottom, and one side of the upper part of the central air pipe 28 is provided with a plurality of negative pressure ports 30 from top to bottom;
The pneumatic sampling mechanism is connected with the sampling column 6 and comprises a lifting cylinder 18 fixedly arranged at the bottom end of a top plate 8, a piston plate 27 is slidably connected in the lifting cylinder 18, the bottom end of the piston plate 27 is fixedly connected with a fixing rod 17, the fixing rod 17 is fixedly connected with the mounting frame 3, the top end of the top plate 8 is fixedly connected with a gas pipe 19, the central groove penetrates through the lifting column 7, and the gas pipe 19 is communicated with the central groove and the lifting cylinder 18.
One side of the mounting frame 3 is fixedly connected with a motor frame 10, the motor frame 10 is fixedly connected with a driving motor 11, and an output shaft of the driving motor 11 is coaxially and fixedly connected with a driving column 14.
The lifting toothed plate 15 and the descending toothed plate 16 penetrate through the mounting frame 3 and are in sliding connection with the mounting frame, and a reset spring 25 is fixedly connected between the lifting toothed plate 15 and the descending toothed plate 16 and the mounting frame 3.
The outside of the driving column 14 is rotationally connected with the mounting sleeve 12, the bottom end of the mounting sleeve 12 is fixedly connected with the mounting rod 13, and the mounting rod 13 is fixedly connected with the mounting frame 3.
The bottom end of the top plate 8 is fixedly connected with a guide sleeve 22, and the movable toothed bar 21 penetrates through the guide sleeve 22 and is in sliding connection with the guide sleeve.
The outside of the fixed outer cylinder 1 is provided with a side sampling port 4 corresponding to a side sampling groove 26, and one side of the upper part of the fixed outer cylinder 1 is fixedly provided with a plurality of sampling input pipes 5.
Wherein the lengths of the plurality of sampling input pipes 5 are different. The corn starch sampling device can realize the corn starch sampling of different depths and different area positions.
The drive teeth 20 are arcuate tooth segments.
In the implementation process, the fixed outer cylinder 1 is inserted into a corn starch production container;
Then the driving motor 11 is controlled to start, the driving motor 11 drives the driving column 14 to rotate, one of the driving teeth 20 drives the lifting toothed plate 15, the lifting toothed plate 15 is driven to move upwards, the top plate 8, the lifting column 7 and the sampling column 6 are caused to move upwards, at the moment, the piston plate 27 moves downwards relatively in the lifting sleeve, negative pressure is generated in the piston cylinder, and then negative pressure is generated in the central air pipe 28;
When the rising toothed plate 15 moves up to a certain distance, the driving motor 11 stops running, and at the moment, the side sampling groove 26 is communicated with the negative pressure port 30, so that the inside of the side sampling groove 26 is in a negative pressure state;
then the hydraulic rod 24 is controlled to extend to drive the movable toothed bar 21 to move, the driven toothed sleeve 23 is rotated under the meshing action, so that the lifting column 7 and the sampling column 6 are rotated, the side sampling groove 26 is disconnected from the negative pressure port 30 until the side sampling groove 26 is communicated with the sampling input pipe 5, and under the negative pressure state, the corn starch semi-finished product is sucked into the side sampling groove 26 through the sampling input pipe 5;
Then the driving motor 11 is controlled to be started again, the driving column 14 is enabled to continue to rotate, the other driving teeth 20 drive the descending toothed plate 16, the descending toothed plate 16 drives the sampling column 6 and the lifting column 7 to move downwards, in the process, the piston plate 27 moves upwards relatively in the lifting cylinder 18, the lifting cylinder 18 is changed from negative pressure to a relatively high pressure state until the sampling column 6 moves downwards to the bottom in the fixed outer cylinder 1, at the moment, the side sampling groove 26 is communicated with the air blowing hole, and relatively high pressure air enters the side sampling groove 26;
then taking the whole device out of the starch production container;
Finally, the hydraulic rod 24 is controlled to reset, the driven tooth sleeve 23 is driven to rotate and reset, the lifting column 7 and the sampling column 6 are driven to rotate and reset until the side sampling groove 26 is communicated with the side sampling port 4, and relatively high-pressure air drives the starch semi-finished product to be sprayed out of the side sampling port 4, so that a collection container can be installed on the side sampling port 4 for guaranteeing collection of the starch semi-finished product.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The semi-finished product inspection sampling device for corn starch production comprises a fixed outer barrel (1), and is characterized in that the inside of the fixed outer barrel (1) is connected with a sampling column (6) in a sliding manner, the top end of the sampling column (6) is fixedly connected with a lifting column (7), the top end of the lifting column (7) is connected with a top plate (8), the top plate (8) is connected with a sampling driving assembly (9), the outside of the fixed outer barrel (1) is fixedly connected with an outer mounting seat (2), and one side of the outer mounting seat (2) is fixedly connected with a mounting frame (3);
The sampling driving assembly (9) comprises a driving column (14) arranged above the mounting frame (3), a lifting toothed plate (15) and a descending toothed plate (16) are fixedly connected to the bottom end of the top plate (8), the lifting toothed plate (15) and the descending toothed plate (16) are respectively positioned on two sides of the driving column (14), two sections of driving teeth (20) are arranged on one side of the outer part of the driving column (14), and the driving teeth (20) are in meshed connection with the lifting toothed plate (15) and the descending toothed plate (16);
the lifting column (7) is connected with a rotary driving assembly, the rotary driving assembly comprises a hydraulic rod (24) fixedly arranged at the bottom end of the top plate (8), a telescopic end of the hydraulic rod (24) is fixedly connected with a movable toothed rod (21), a driven toothed sleeve (23) is coaxially and fixedly connected to the outer side of the top end of the lifting column (7), and the movable toothed rod (21) is positioned on one side of the driven toothed sleeve (23) and is meshed with the driven toothed sleeve;
a plurality of side sampling grooves (26) are formed in the side edge of the lower part of the sampling column (6) from top to bottom, a central groove is coaxially and penetratingly formed in the sampling column (6), the side sampling grooves (26) are communicated with the central groove, a central air pipe (28) is rotationally connected in the central groove, the central air pipe (28) is coaxially and fixedly connected with the fixed outer cylinder (1), a plurality of air blowing ports (29) are formed in one side of the lower part of the central air pipe (28) from top to bottom, and a plurality of negative pressure ports (30) are formed in one side of the upper part of the central air pipe (28) from top to bottom;
The pneumatic sampling mechanism comprises a lifting cylinder (18) fixedly arranged at the bottom end of a top plate (8), a piston plate (27) is connected in a sliding manner in the lifting cylinder (18), the bottom end of the piston plate (27) is fixedly connected with a fixing rod (17), the fixing rod (17) is fixedly connected with a mounting frame (3), the top end of the top plate (8) is fixedly connected with a gas pipe (19), the central groove penetrates through the lifting cylinder (7), and the gas pipe (19) is communicated with the central groove and the lifting cylinder (18);
a side sampling port (4) corresponding to the side sampling groove (26) is formed in the outer part of the fixed outer cylinder (1), and a plurality of sampling input pipes (5) are fixedly arranged on one side of the upper part of the fixed outer cylinder (1);
When in use, the fixed outer cylinder (1) is inserted into a corn starch production container; then, the driving motor (11) is controlled to start, the driving motor (11) drives the driving column (14) to rotate, one driving tooth (20) drives the lifting toothed plate (15), the lifting toothed plate (15) is driven to move upwards, the top plate (8), the lifting column (7) and the sampling column (6) move upwards, at the moment, the piston plate (27) moves downwards relatively in the lifting cylinder (18), negative pressure is generated in the lifting cylinder (18), and then negative pressure is generated in the central air pipe (28);
When the rising toothed plate (15) moves up to a certain distance, the driving motor (11) stops running, and the side sampling groove (26) is communicated with the negative pressure port (30) at the moment, so that the inside of the side sampling groove (26) is in a negative pressure state;
Then the hydraulic rod (24) is controlled to extend to drive the movable toothed bar (21) to move, the driven toothed sleeve (23) is rotated under the meshing action, so that the lifting column (7) and the sampling column (6) are rotated, the side sampling groove (26) is disconnected from the negative pressure port (30) until the side sampling groove (26) is communicated with the sampling input pipe (5), and under the negative pressure state, the corn starch semi-finished product is sucked into the side sampling groove (26) through the sampling input pipe (5);
Then the driving motor (11) is controlled to be started again, the driving column (14) continues to rotate, the other driving tooth (20) drives the descending toothed plate (16), the descending toothed plate (16) drives the sampling column (6) and the lifting column (7) to move downwards, in the process, the piston plate (27) moves upwards relatively in the lifting cylinder (18), the lifting cylinder (18) is changed into a relatively high-pressure state from negative pressure until the sampling column (6) moves downwards to the bottom in the fixed outer cylinder (1), at the moment, the side sampling groove (26) is communicated with the air blowing hole, and relatively high-pressure air enters the side sampling groove (26);
then taking the whole device out of the starch production container;
Finally, the hydraulic rod (24) is controlled to reset, the driven tooth sleeve (23) is driven to rotate and reset, the lifting column (7) and the sampling column (6) are enabled to rotate and reset until the side sampling groove (26) is communicated with the side sampling port (4), and relatively high-pressure air drives starch semi-finished products to be sprayed out of the side sampling port (4).
2. The semi-finished product inspection sampling device for corn starch production according to claim 1, wherein one side of the mounting frame (3) is fixedly connected with a motor frame (10), the driving motor (11) is fixedly arranged on the motor frame (10), and an output shaft of the driving motor (11) is coaxially and fixedly connected with the driving column (14).
3. The semi-manufactured goods inspection sampling device for corn starch production according to claim 1, wherein the rising toothed plate (15) and the falling toothed plate (16) penetrate through the mounting frame (3) and are connected with the mounting frame in a sliding mode, and a reset spring (25) is fixedly connected between the rising toothed plate (15) and the falling toothed plate (16) and the mounting frame (3).
4. The semi-finished product inspection sampling device for corn starch production according to claim 1, wherein the outside of the driving column (14) is rotationally connected with a mounting sleeve (12), the bottom end of the mounting sleeve (12) is fixedly connected with a mounting rod (13), and the mounting rod (13) is fixedly connected with the mounting frame (3).
5. The semi-finished product inspection sampling device for corn starch production according to claim 1, wherein the bottom end of the top plate (8) is fixedly connected with a guide sleeve (22), and the movable toothed bar (21) penetrates through the guide sleeve (22) and is in sliding connection with the guide sleeve.
6. Semi-finished product inspection and sampling device for corn starch production according to claim 1 characterized in that the drive teeth (20) are arcuate tooth segments.
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| CN202410144030.3A CN117664656B (en) | 2024-02-01 | 2024-02-01 | Semi-manufactured goods inspection sampling device is used in maize starch production |
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| WO2022100188A1 (en) * | 2020-11-10 | 2022-05-19 | 苏州瑞红电子化学品有限公司 | Automatic sampling device for negative photoresist |
| CN114397412A (en) * | 2021-12-30 | 2022-04-26 | 昌邑天宇药业有限公司 | Medicine intermediate each hierarchy detecting system |
| CN219714878U (en) * | 2023-03-22 | 2023-09-19 | 中山市农产品质量安全检验所(中山市水生动物疫病预防控制中心) | Sampling device with impurity removal function for water quality detection |
| CN220120488U (en) * | 2023-06-08 | 2023-12-01 | 德州六顺电气自动化设备有限公司 | Electrical production carbon emission detects gaseous sampling device |
| CN116609136A (en) * | 2023-07-20 | 2023-08-18 | 深圳市深勘工程咨询有限公司 | Multi-aquifer groundwater sampling monitoring equipment |
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| CN117664656A (en) | 2024-03-08 |
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