CN112629989A - Soil sample weight diluting device for multi-sample environment-friendly detection - Google Patents
Soil sample weight diluting device for multi-sample environment-friendly detection Download PDFInfo
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- CN112629989A CN112629989A CN202011618099.3A CN202011618099A CN112629989A CN 112629989 A CN112629989 A CN 112629989A CN 202011618099 A CN202011618099 A CN 202011618099A CN 112629989 A CN112629989 A CN 112629989A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
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Abstract
The invention discloses a soil sample component diluting device for multi-sample environment-friendly detection, which comprises a device body, a storage barrel, a liquid storage tank, a driving rod and a liquid spraying nozzle, wherein the storage barrel is arranged at the top end of the device body, the liquid storage tank is arranged at the top end of the device body on one side of the storage barrel, the bottom end of the liquid storage tank is fixedly connected with the device body, a supporting frame is arranged at the top end of the device body on one side of the liquid storage tank, the bottom end of the supporting frame is fixedly connected with the device body, a diluting cylinder is arranged inside the supporting frame, the liquid spraying nozzle is arranged inside the supporting frame above the diluting cylinder, the bottom end of the liquid spraying nozzle is fixedly connected with the supporting frame, and a power pump is fixed inside. The invention not only realizes the rapid and efficient dilution of the soil sample by the dilution device, avoids large particle impurities from entering the dilution device to influence the dilution quality, but also improves the working efficiency of the dilution device.
Description
Technical Field
The invention relates to the technical field of diluting devices, in particular to a soil sample component diluting device for multi-sample environment-friendly detection.
Background
Soil environment detection means that environment quality or pollution degree and change trend thereof are determined through measuring representative values of factors influencing soil environment quality, soil is generally required to be diluted when detection and analysis are carried out, then the conditions of material composition, colony distribution and the like are conveniently detected, and in order to ensure the accuracy of detection results, soil samples are required to be smashed to form fine soil particles so as to improve the detection accuracy.
The diluting device on the market is various and can basically meet the use requirements of people, but certain problems still exist, and the specific problems include the following points:
(1) the existing diluting device is generally inconvenient to quickly and efficiently dilute a soil sample when in use, so that the convenience degree of the diluting device when in use is seriously influenced;
(2) the existing diluting device is not convenient to efficiently screen and filter soil samples when in use, so that the diluting quality of the diluting device is greatly influenced when in use;
(3) the existing diluting device is not convenient to efficiently extract and convey soil samples when in use, thereby bringing great trouble to people.
Disclosure of Invention
The invention aims to provide a soil sample component diluting device for multi-sample environment-friendly detection, and aims to solve the problems that the diluting device provided by the background technology is inconvenient for quickly and efficiently diluting a soil sample, efficiently screens and filters the soil sample, and efficiently extracts and conveys the soil sample.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a soil sample weight diluting device for environmental protection of multiple samples detects, includes device body, storage vat, liquid reserve tank, actuating lever and hydrojet, the top of device body is equipped with the storage vat, and the device body top of storage vat one side installs the liquid reserve tank to the bottom and the device body fixed connection of liquid reserve tank, the support frame is installed on the device body top of liquid reserve tank one side, and the bottom and the device body fixed connection of support frame to the inside of support frame is equipped with dilutes a section of thick bamboo, the inside hydrojet that is equipped with of support frame above diluting a section of thick bamboo, and the bottom and the support frame fixed connection of hydrojet to the inside power pump that is fixed with of support frame below hydrojet, the inside control panel that is fixed with of support frame on one side of power pump, and the inside output of control panel and the input singlechip electric connection of power pump.
Preferably, the inside of diluting a section of thick bamboo is equipped with the stirring leaf, and stirs the support frame top of leaf top and install driving motor to driving motor's output passes through the shaft coupling and installs the third pivot, driving motor's one end is kept away from in the third pivot is fixed with the actuating lever, and the bottom and the stirring leaf fixed connection of actuating lever, has realized diluting device and has diluted soil sample high efficiency.
Preferably, the inside spiral flood dragon that is equipped with of device body of storage vat top, and the device body internally mounted of spiral flood dragon top has servo motor to servo motor's output passes through the shaft coupling and installs the second pivot, servo motor's one end is kept away from in the second pivot is fixed with the transfer line, and the bottom and the spiral flood dragon fixed connection of transfer line have guaranteed the transport that soil sample is stable.
Preferably, the flitch under the inside device body of spiral flood dragon one side is equipped with, and the inside screening case that is equipped with of device body of flitch below down to install step motor on the outer wall of screening case one side, be fixed with the supporting box on the screening case outer wall of step motor one side.
Preferably, step motor's output passes through the shaft coupling and installs first pivot, and the one end that step motor was kept away from to first pivot is fixed with the transmission shaft to the inside filter screen that is equipped with of screening incasement portion on one side of the transmission shaft has realized that diluting device filters to the screening of soil sample efficient.
Preferably, the outer wall and the screening case fixed connection of filter screen, and the inside of filter screen is equipped with dials the board to the one end and the transmission shaft fixed connection of dialling the board have avoided large granule impurity to get into the quality that dilutent device internal influence dilutes.
Preferably, the bottom of screening case is equipped with the delivery box, and the inside of delivery box is equipped with the pay-off flight to the both ends of pay-off flight are all articulated mutually through bearing and delivery box inner wall.
Preferably, be fixed with micro motor on the delivery box outer wall of pay-off flight one side, and micro motor's one end and delivery box fixed connection to micro motor's output passes through the shaft coupling and installs the fourth pivot, has realized diluting device and has carried the extraction of soil sample efficient.
Preferably, a driving shaft is fixed at one end of the fourth rotating shaft, which is far away from the micro motor, and one end of the driving shaft is fixedly connected with the feeding spiral sheet.
Compared with the prior art, the invention has the beneficial effects that: the diluting device not only realizes the rapid and efficient dilution of the soil sample by the diluting device, avoids large-particle impurities from entering the diluting device to influence the diluting quality, but also improves the working efficiency of the diluting device;
(1) samples for environment protection detection and sampling are placed inside the storage barrel by workers, are conveyed to the inside of the screening box by the spiral flood dragon, soil samples are conveyed to the inside of the diluting cylinder by the conveying box after being screened by the screening box, the power pump is started by operating the control panel, the diluted liquid in the liquid storage tank is conveyed to the interior of the liquid spraying nozzle through a pipeline, the liquid spraying nozzle sprays the diluted liquid into the diluting cylinder in a certain proportion to dilute the soil sample, in order to improve the dilution efficiency, the control panel is operated to turn on the driving motor, the third rotating shaft drives the driving rod to rotate, the stirring blade is driven to rotate under the transmission of the driving rod, and the soil sample in the diluting cylinder is quickly diluted by the quick rotation of the stirring blade, so that the soil sample is quickly and efficiently diluted by the diluting device, the diluting uniformity of the soil sample is increased, and the working efficiency of the diluting device is improved;
(2) the servo motor is started through the operation of the control panel by a worker, the transmission rod is driven to rotate by the second rotating shaft, the spiral auger is driven to rotate under the transmission of the transmission rod, the soil sample in the storage barrel is quantitatively extracted by the spiral auger, the rotating speed of the spiral auger is controlled by the single chip microcomputer in the control panel, the micro motor is started through the operation of the control panel, the driving shaft is driven to rotate by the fourth rotating shaft, so that the feeding spiral piece is driven to rotate, the soil sample is stably conveyed by the conveying box under the driving of the feeding spiral piece, the efficient extraction and conveying of the soil sample by the diluting device are realized, and the stable conveying of the soil sample is ensured;
(3) open step motor through staff operation control panel, under the support of supporting box, it is rotatory to drive the transmission shaft by first pivot, thereby the board rotation is dialled in the drive, extract soil sample by the spiral flood dragon, carry to the inside of dialling the board by the lower flitch, extrude soil sample by the filter screen under the rotation of dialling the board, under the rotary drive of dialling the board, soil sample passes through the screening of filter screen and falls tiny granule to the inside of screening case, leave over the inside at the filter screen with the impurity of big granule, realized diluting device and filtered the screening of soil sample efficient, the quality of large granule impurity entering diluting device internal influence dilution has been avoided.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a side view, cross-sectional structure of the dial plate of the present invention;
FIG. 3 is a schematic side sectional view of the stirring blade of the present invention;
FIG. 4 is a schematic top sectional view of the stirring blade of the present invention;
FIG. 5 is a schematic top sectional view of the transfer box of the present invention;
FIG. 6 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;
FIG. 7 is a schematic diagram of the system framework of the present invention.
In the figure: 1. a device body; 2. a storage barrel; 3. a liquid storage tank; 4. a spiral flood dragon; 5. a delivery box; 6. a support box; 7. a stepping motor; 8. a first rotating shaft; 9. a drive shaft; 10. a screening box; 11. a blanking plate; 12. a transmission rod; 13. a second rotating shaft; 14. a servo motor; 15. a drive motor; 16. a third rotating shaft; 17. a drive rod; 18. a liquid spray nozzle; 19. stirring blades; 20. a dilution cylinder; 21. a support frame; 22. a control panel; 23. a power pump; 24. dialing a plate; 25. a filter screen; 26. a micro motor; 27. a fourth rotating shaft; 28. a drive shaft; 29. feeding a screw plate.
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. 1-7, an embodiment of the present invention is shown: a soil sample component diluting device for multi-sample environment-friendly detection comprises a device body 1, a storage barrel 2, a liquid storage tank 3, a driving rod 17 and a liquid spraying nozzle 18, wherein the storage barrel 2 is arranged at the top end of the device body 1, the liquid storage tank 3 is arranged at the top end of the device body 1 at one side of the storage barrel 2, the bottom end of the liquid storage tank 3 is fixedly connected with the device body 1, a support frame 21 is arranged at the top end of the device body 1 at one side of the liquid storage tank 3, the bottom end of the support frame 21 is fixedly connected with the device body 1, a diluting cylinder 20 is arranged inside the support frame 21, the liquid spraying nozzle 18 is arranged inside the support frame 21 above the diluting cylinder 20, the bottom end of the liquid spraying nozzle 18 is fixedly connected with the support frame 21, a power pump 23 is fixed inside the support frame 21 below the liquid spraying nozzle 18, the power pump 23 is 150QJ20-54/9 in model, the output end of a, a control panel 22 is fixed inside a support frame 21 on one side of a power pump 23, the output end of a single chip microcomputer inside the control panel 22 is electrically connected with the input end of the power pump 23, a stirring blade 19 is arranged inside a dilution cylinder 20, a driving motor 15 is installed at the top end of the support frame 21 above the stirring blade 19, a third rotating shaft 16 is installed at the output end of the driving motor 15 through a coupler, a driving rod 17 is fixed at one end, far away from the driving motor 15, of the third rotating shaft 16, and the bottom end of the driving rod 17 is fixedly connected with the stirring blade 19;
when the device is used, a sample for environment-friendly detection and sampling is placed inside the storage barrel 2 through a worker, the sample is conveyed to the inside of the screening box 10 through the spiral auger 4, the soil sample is conveyed to the inside of the diluting cylinder 20 through the conveying box 5 after being screened by the screening box 10, the power pump 23 is started by the operation control panel 22, the diluting liquid in the liquid storage box 3 is conveyed to the inside of the liquid spraying nozzle 18 through a pipeline, the diluting nozzle 18 sprays a certain proportion of the diluting cylinder 20 to dilute the soil sample, in order to improve the diluting efficiency, the driving motor 15 is started by the operation control panel 22, the driving rod 17 is driven to rotate by the third rotating shaft 16, the stirring blade 19 is driven to rotate under the transmission of the driving rod 17, the soil sample in the diluting cylinder 20 is quickly diluted by the quick rotation of the stirring blade 19, and the quick and efficient dilution of the soil sample by the diluting device is realized, the dilution uniformity of the soil sample is improved, and the working efficiency of the dilution device is improved;
a spiral flood dragon 4 is arranged inside a device body 1 above a storage barrel 2, a servo motor 14 is arranged inside the device body 1 above the spiral flood dragon 4, the model of the servo motor 14 is MR-J4S-10A, the output end of a single chip microcomputer inside a control panel 22 is electrically connected with the input end of the servo motor 14, a second rotating shaft 13 is arranged at the output end of the servo motor 14 through a coupler, a transmission rod 12 is fixed at one end, far away from the servo motor 14, of the second rotating shaft 13, the bottom end of the transmission rod 12 is fixedly connected with the spiral flood dragon 4, a conveying box 5 is arranged at the bottom end of the screening box 10, a feeding spiral sheet 29 is arranged inside the conveying box 5, two ends of the feeding spiral sheet 29 are hinged with the inner wall of the conveying box 5 through bearings, a micro motor 26 is fixed on the outer wall of the conveying box 5 at one side of the feeding spiral sheet 29, the model of the micro motor 26 is MR-J, the output end of the single chip microcomputer in the control panel 22 is electrically connected with the input end of the micro motor 26, one end of the micro motor 26 is fixedly connected with the conveying box 5, the output end of the micro motor 26 is provided with a fourth rotating shaft 27 through a coupler, one end of the fourth rotating shaft 27 far away from the micro motor 26 is fixedly provided with a driving shaft 28, and one end of the driving shaft 28 is fixedly connected with the feeding spiral sheet 29;
when the device is used, a worker operates the control panel 22 to open the servo motor 14, the second rotating shaft 13 drives the transmission rod 12 to rotate, the spiral auger 4 is driven to rotate under the transmission of the transmission rod 12, the soil sample in the storage barrel 2 is quantitatively extracted by the spiral auger 4, the single chip microcomputer in the control panel 22 controls the rotating speed of the spiral auger 4, the micro motor 26 is operated to open the control panel 22, the fourth rotating shaft 27 drives the driving shaft 28 to rotate, so that the feeding spiral sheet 29 is driven to rotate, the soil sample is stably conveyed by the conveying box 5 under the driving of the feeding spiral sheet 29, the diluting device is used for efficiently extracting and conveying the soil sample, and the stable conveying of the soil sample is ensured;
a blanking plate 11 is arranged inside a device body 1 on one side of a spiral flood dragon 4, a screening box 10 is arranged inside the device body 1 below the blanking plate 11, a stepping motor 7 is arranged on the outer wall on one side of the screening box 10, the model of the stepping motor 7 is MR-J2S-10A, the output end of a single chip microcomputer inside a control panel 22 is electrically connected with the input end of the stepping motor 7, a support box 6 is fixed on the outer wall of the screening box 10 on one side of the stepping motor 7, a first rotating shaft 8 is arranged at the output end of the stepping motor 7 through a coupler, a transmission shaft 9 is fixed at one end, far away from the stepping motor 7, of the first rotating shaft 8, a filter screen 25 is arranged inside the screening box 10 on one side of the transmission shaft 9, the outer wall of the filter screen 25 is fixedly connected with the screening box 10, a shifting plate 24 is arranged inside the filter;
The working principle is as follows: when the device is used, the external power supply is connected, firstly, a sample for environment-friendly detection and sampling is placed inside the storage barrel 2 through a worker, the sample is conveyed to the inside of the screening box 10 through the spiral dragon 4, the soil sample is conveyed to the inside of the diluting cylinder 20 through the conveying box 5 after being screened by the screening box 10, the power pump 23 is started by the operation control panel 22, the diluting liquid in the liquid storage box 3 is conveyed to the inside of the liquid spraying nozzle 18 through a pipeline, the diluting cylinder 20 is sprayed by the liquid spraying nozzle 18 in a certain proportion to dilute the soil sample, in order to improve the diluting efficiency, the driving motor 15 is started by the operation control panel 22, the driving rod 17 is driven to rotate by the third rotating shaft 16, the stirring blade 19 is driven to rotate under the transmission of the driving rod 17, the soil sample in the diluting cylinder 20 is quickly diluted by the quick rotation of the stirring blade 19, and efficient dilution of the soil sample by the diluting device is realized, the uniformity of soil sample dilution is increased, the work efficiency of the dilution device is improved, then the servo motor 14 is started through the operator operation control panel 22, the transmission rod 12 is driven to rotate by the second rotating shaft 13, the spiral auger 4 is driven to rotate under the transmission of the transmission rod 12, the soil sample in the storage barrel 2 is quantitatively extracted by the spiral auger 4, the rotating speed of the spiral auger 4 is controlled by a single chip microcomputer in the control panel 22, the micro motor 26 is started by the operation control panel 22, the driving shaft 28 is driven to rotate by the fourth rotating shaft 27, so that the feeding auger 29 is driven to rotate, the soil sample is stably conveyed by the conveying box 5 under the driving of the feeding auger 29, the dilution device can efficiently extract and convey the soil sample, the stable conveying of the soil sample is ensured, and the stepping motor 7 is started through the operator operation control panel 22, under the support of supporting box 6, it is rotatory to drive transmission shaft 9 by first pivot 8, thereby board 24 is dialled in the drive and rotates, draw soil sample by spiral flood dragon 4, carry to the inside of dialling board 24 by lower flitch 11, extrude soil sample by filter screen 25 under the rotation of dialling board 24, dial under the rotary drive of board 24, soil sample passes through the screening of filter screen 25 and flows down tiny granule to the inside of screening case 10, leave over the impurity of big granule in the inside of filter screen 25, realize diluting device and filter the screening of soil sample efficient, avoid large granule impurity to get into the inside quality that influences the dilution of diluting device, accomplish the use work of diluting device.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. The utility model provides a many samples environmental protection detects uses soil sample weight diluting device, includes device body (1), storage vat (2), liquid reserve tank (3), actuating lever (17) and hydrojet (18), its characterized in that: the device is characterized in that a storage vat (2) is arranged at the top end of the device body (1), a liquid storage box (3) is mounted at the top end of the device body (1) on one side of the storage vat (2), the bottom end of the liquid storage box (3) is fixedly connected with the device body (1), a support frame (21) is mounted at the top end of the device body (1) on one side of the liquid storage box (3), the bottom end of the support frame (21) is fixedly connected with the device body (1), a dilution cylinder (20) is arranged inside the support frame (21) above the dilution cylinder (20), a liquid spraying nozzle (18) is arranged inside the support frame (21) above the liquid spraying nozzle (18), the bottom end of the liquid spraying nozzle (18) is fixedly connected with the support frame (21), a power pump (23) is fixed inside the support frame (21) below the liquid spraying nozzle (18), a control panel (22) is fixed inside the support frame (21) on one side of the power pump (23), and the output end of the control.
2. The soil sample component dilution device for multi-sample environmental protection detection according to claim 1, characterized in that: the inside of diluting a section of thick bamboo (20) is equipped with stirring leaf (19), and supports frame (21) top of stirring leaf (19) top and install driving motor (15) to the output of driving motor (15) is passed through the shaft coupling and is installed third pivot (16), the one end that driving motor (15) were kept away from in third pivot (16) is fixed with actuating lever (17), and the bottom and the stirring leaf (19) fixed connection of actuating lever (17).
3. The soil sample component dilution device for multi-sample environmental protection detection according to claim 1, characterized in that: inside spiral flood dragon (4) of being equipped with in device body (1) of storage vat (2) top, and the device body (1) internally mounted of spiral flood dragon (4) top has servo motor (14) to the output of servo motor (14) is through the shaft coupling install second pivot (13), the one end that servo motor (14) were kept away from in second pivot (13) is fixed with transfer line (12), and the bottom and spiral flood dragon (4) fixed connection of transfer line (12).
4. The soil sample component dilution device for multi-sample environmental protection detection according to claim 3, wherein: flitch (11) under and are equipped with in device body (1) inside of spiral flood dragon (4) one side to install on the outer wall of screening case (10) one side step motor (7) inside screening case (1) of flitch (11) below down, be fixed with on the screening case (10) outer wall of step motor (7) one side and support case (6).
5. The soil sample component dilution device for multi-sample environmental protection detection according to claim 4, wherein: step motor's (7) output passes through the shaft coupling and installs first pivot (8), and step motor's (7) one end is kept away from in first pivot (8) is fixed with transmission shaft (9) to inside filter screen (25) that are equipped with of screening case (10) of transmission shaft (9) one side.
6. The soil sample component dilution device for multi-sample environmental protection detection according to claim 5, wherein: the outer wall and the screening case (10) fixed connection of filter screen (25), and the inside of filter screen (25) is equipped with dials board (24) to dial the one end and transmission shaft (9) fixed connection of board (24).
7. The soil sample component dilution device for multi-sample environmental protection detection according to claim 1, characterized in that: the bottom of screening case (10) is equipped with delivery box (5), and the inside of delivery box (5) is equipped with pay-off flight (29) to the both ends of pay-off flight (29) are all articulated mutually through bearing and delivery box (5) inner wall.
8. The soil sample component dilution device for multi-sample environmental protection detection according to claim 7, wherein: be fixed with micro motor (26) on transport case (5) outer wall of pay-off flight (29) one side, and the one end and transport case (5) fixed connection of micro motor (26) to fourth pivot (27) are installed through the shaft coupling to the output of micro motor (26).
9. The soil sample component dilution device for multi-sample environmental protection detection according to claim 8, wherein: and a driving shaft (28) is fixed at one end of the fourth rotating shaft (27) far away from the micro motor (26), and one end of the driving shaft (28) is fixedly connected with the feeding spiral sheet (29).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011618099.3A CN112629989A (en) | 2020-12-31 | 2020-12-31 | Soil sample weight diluting device for multi-sample environment-friendly detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011618099.3A CN112629989A (en) | 2020-12-31 | 2020-12-31 | Soil sample weight diluting device for multi-sample environment-friendly detection |
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| CN112629989A true CN112629989A (en) | 2021-04-09 |
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| CN202011618099.3A Pending CN112629989A (en) | 2020-12-31 | 2020-12-31 | Soil sample weight diluting device for multi-sample environment-friendly detection |
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| CN110793837A (en) * | 2019-12-05 | 2020-02-14 | 湛江中科技术服务有限公司 | Soil sample diluting device for environmental protection detection |
| CN210533817U (en) * | 2019-07-14 | 2020-05-15 | 绍兴市米莉农业科技有限公司 | Diluting device for soil detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009002127A (en) * | 2007-06-20 | 2009-01-08 | Sanwa Kizai Co Ltd | Method for operating on-vehicle type soil improving apparatus |
| CN207521280U (en) * | 2017-10-09 | 2018-06-22 | 许昌学院 | A kind of civil engineering soil filter device |
| CN107807227A (en) * | 2017-12-14 | 2018-03-16 | 百奥森（江苏）食品安全科技有限公司 | A kind of soil acidity or alkalinity detection means |
| CN107891059A (en) * | 2017-12-21 | 2018-04-10 | 刘艳燕 | A kind of abatement equipment for soil pollution |
| CN108296279A (en) * | 2018-01-29 | 2018-07-20 | 李子琦 | A kind of liquid and the well-mixed soil remediation device of soil |
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Application publication date: 20210409 |