Full-process automatic soil sample preparation device

Abstract

The invention discloses a full-process automatic soil sample preparation device, and relates to the technical field of soil sample preparation. The driving device is used for driving the rotating platform to rotate; the cover plate is arranged above the rotating platform; the screening and collecting mechanism is clamped between the cover plate and the rotating platform and comprises a coarse grinding and screening disc, a sample separating disc, a fine grinding and screening barrel and a collecting bottle which are sequentially arranged from top to bottom; an opening in the top end of the coarse grinding screening disc is propped against the bottom surface of the cover plate; a first screen is arranged at the bottom of the coarse grinding and screening disc, the top end of the sample separating disc is in sealed connection with the bottom end of the coarse grinding and screening disc, a plurality of flow dividing openings are formed in the bottom face of the sample separating disc, the flow dividing openings, the fine grinding and screening barrels and the collecting bottles are in one-to-one correspondence, the top ends of the fine grinding and screening barrels are connected with the corresponding flow dividing openings, and second screens are arranged in the fine grinding and screening barrels. Soil mixing, coarse grinding, sample separation, fine grinding and collection can be completed at the same time, and the preparation efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sample preparation, and in particular to a full-process automated soil sample preparation device. Background Art

[0002] Soil sample preparation refers to the process of mixing, drying, grinding and sieving soil samples after they are collected from the field. Currently, the following methods are mainly used in laboratories for sample preparation:

[0003] The first type: fully manual sample preparation, which is done manually using a wooden hammer, a wooden stick, or an agate mortar. The main disadvantages of manual sample preparation are: (1) high labor intensity and boring work; (2) large individual differences and unstable sample preparation; (3) serious cross contamination; (4) no effective quality control system and means; (5) large dust, causing physical harm to the experimenter; (6) 5-8 people are required to participate in sample preparation, which has high labor costs.

[0004] The second type: single-device sample preparation, which completes the entire sample preparation process by purchasing different instruments and equipment. For example, you need to purchase a jaw crusher, planetary ball mill, sifter, mixer, splitter, etc. The jaw crusher is used for coarse grinding of soil, the planetary ball mill is used for fine grinding of soil, the sifter is used for screening soil samples, the mixer is used for mixing soil, and the splitter is used to divide soil samples into several equal parts. The main disadvantages of single-device sample preparation are: (1) The cost of a full set of equipment is extremely high; (2) The high-intensity crushing method of the jaw crusher can easily crush stones and gravel, contaminating the sample; (3) The planetary ball mill can easily grind the sample too finely; (4) It is necessary to transfer back and forth between different instruments, which is inefficient; (5) Each instrument is difficult to clean and can easily cause cross-contamination.

[0005] The third type: the automated soil preparation system, such as the invention patent with application number CN201920567543.X, adopts an integrated automation approach, integrating a single grinder, screener, mixer, sampler and other equipment, and uses a robot to replace manual transfer, but the cost is extremely high and the efficiency is low. Summary of the invention

[0006] The purpose of the present invention is to provide a fully automated soil sample preparation device to solve the problems existing in the above-mentioned prior art and improve the preparation efficiency of soil samples.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention provides a full-process automated soil sample preparation device, comprising:

[0009] Rotating platform;

[0010] A driving device, the driving device is used to drive the rotating platform to rotate;

[0011] A cover plate is arranged above the rotating platform, and the cover plate is detachably connected to the rotating platform;

[0012] The screening and collecting mechanism is sandwiched between the cover plate and the rotating platform, and the screening and collecting mechanism comprises a coarse grinding screening disc, a sample dividing disc, a fine grinding screening cylinder and a collecting bottle which are arranged in sequence from top to bottom; the top opening of the coarse grinding screening disc abuts against the bottom surface of the cover plate; a first screen is arranged at the bottom of the coarse grinding screening disc, the top of the sample dividing disc is sealedly connected to the bottom end of the coarse grinding screening disc, a plurality of diversion ports are arranged on the bottom surface of the sample dividing disc, the diversion ports, the fine grinding screening cylinder and the collecting bottle correspond to each other one by one, all the fine grinding screening cylinders are distributed along the circumference of the rotating platform, and all the collecting bottles are distributed along the circumference of the rotating platform; the top of the fine grinding screening cylinder is connected to the corresponding diversion port, a second screen is arranged in the fine grinding screening cylinder, the aperture of the mesh of the first screen is larger than the aperture of the mesh of the second screen, the top of the collecting bottle is sealedly connected to the bottom end of the corresponding fine grinding screening cylinder, and the bottom end of the collecting bottle abuts against the top surface of the rotating platform.

[0013] Preferably, the cover plate is connected to the rotating platform through at least two fixing rods, the bottom ends of the fixing rods are threadedly connected to the rotating platform, the tops of the fixing rods pass through the cover plate, the top ends of the fixing rods are connected to the first bolts, and the bottom surfaces of the first bolts abut against the top surfaces of the cover plate.

[0014] Preferably, a first plug-in tube for inserting into the sampling disk is provided at the bottom end of the coarse grinding and screening disk, and the outer diameter of the first plug-in tube is equal to the inner diameter of the top end of the sampling disk.

[0015] Preferably, a diversion groove is provided on the bottom surface of the sample separation plate corresponding to each of the diversion ports, the diversion groove is a curved groove, and the diversion port is provided at the lowest point of the corresponding diversion groove.

[0016] Preferably, a second plug-in cylinder for inserting into the corresponding fine grinding and screening cylinder is provided at the bottom end of each diversion port, and the outer diameter of the second plug-in cylinder is equal to the inner diameter of the corresponding fine grinding and screening cylinder.

[0017] Preferably, the bottom end of each of the fine grinding and screening cylinders is inserted into the corresponding collecting bottle, and the outer diameter of the fine grinding and screening cylinder is equal to the inner diameter of the corresponding collecting bottle, and the bottom end of the fine grinding and screening cylinder abuts against the bottom surface of the collecting bottle.

[0018] Preferably, the coarse grinding and screening disc and the fine grinding and screening cylinder are both made of plastic.

[0019] Preferably, there are four diversion ports, four fine grinding and screening cylinders, and four collecting bottles.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The fully automated soil sample preparation device of the present invention integrates the functions of soil mixing, coarse grinding, sampling and fine grinding, and can simultaneously complete soil mixing, coarse grinding, sampling, fine grinding and collection within one working cycle, with high preparation efficiency.

[0022] Furthermore, grinding media are arranged in the coarse grinding screening disc and the fine grinding screening cylinder, and the screening and collecting mechanism is driven to rotate by driving the rotating platform. During the rotation process, the soil can fully contact and collide with the grinding media in the coarse grinding screening disc and the fine grinding screening cylinder, thereby automatically completing the grinding process.

[0023] Furthermore, the sampling plate can automatically sample the coarsely ground and screened soil.

[0024] Furthermore, the fully automated soil sample preparation device of the present invention is fully enclosed during operation, without dust spillage, thereby ensuring friendliness to the environment and experimenters.

[0025] Furthermore, the coarse grinding and screening disc and the fine grinding and screening cylinder are made of plastic, which is low in cost, and the grinding force of the coarse grinding and screening disc and the fine grinding and screening cylinder made of plastic is limited, which can ensure that stones, gravel and plant roots in the soil are not ground and screened. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 It is a structural schematic diagram of the full-process automated soil sample preparation device of the present invention;

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the full-process automated soil sample preparation device of the present invention;

[0029] Figure 3 A top view of the fully automated soil sample preparation device of the present invention;

[0030] Figure 4 for Figure 3 AA cross-sectional diagram of ;

[0031] Figure 5 It is a structural schematic diagram of the sample separation plate in the full-process automated soil sample preparation device of the present invention; wherein, 100, the full-process automated soil sample preparation device; 1, the cover plate; 2, the fixing rod; 3, the rotating platform; 4, the coarse grinding and screening plate; 5, the sample separation plate; 501, the diversion groove; 502, the diversion port; 6, the second plug-in cylinder; 7, the fine grinding and screening cylinder; 8, the collecting bottle; 9, the connecting shaft; 10, the adapter plate; 11, the driving device; 12, the first screen; 13, the first plug-in cylinder; 14, the second screen. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] The purpose of the present invention is to provide a fully automated soil sample preparation device to solve the problems existing in the above-mentioned prior art and improve the preparation efficiency of soil samples.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 5 As shown, this embodiment provides a full-process automated soil sample preparation device 100, comprising:

[0036] Rotate platform 3;

[0037] A driving device 11, the driving device 11 is used to drive the rotating platform 3 to rotate;

[0038] A cover plate 1 is arranged above the rotating platform 3, and the cover plate 1 is detachably connected to the rotating platform 3;

[0039] The screening and collecting mechanism is sandwiched between the cover plate 1 and the rotating platform 3, and the screening and collecting mechanism includes a coarse grinding screening plate 4, a sample dividing plate 5, a fine grinding screening cylinder 7 and a collecting bottle 8 which are arranged in sequence from top to bottom; the top opening of the coarse grinding screening plate 4 abuts against the bottom surface of the cover plate 1; a first screen 12 is arranged at the bottom of the coarse grinding screening plate 4, the top of the sample dividing plate 5 is sealedly connected to the bottom end of the coarse grinding screening plate 4, and a plurality of diversion ports 502 are arranged on the bottom surface of the sample dividing plate 5, and the diversion ports 502, the fine grinding screening cylinder 7 and the collecting bottle 8 correspond to each other one by one, and all the fine grinding screening cylinders 7 are distributed along the circumference of the rotating platform 3, and all the collecting bottles 8 are distributed along the circumference of the rotating platform 3; the top of the fine grinding screening cylinder 7 is connected to the corresponding diversion port 502, a second screen 14 is arranged in the fine grinding screening cylinder 7, the top of the collecting bottle 8 is sealedly connected to the bottom end of the corresponding fine grinding screening cylinder 7, and the bottom end of the collecting bottle 8 abuts against the top surface of the rotating platform 3.

[0040] It should be noted that, since the first sieve 12 performs coarse grinding and screening and the second sieve 14 performs fine grinding and screening, the aperture of the mesh of the first sieve 12 is larger than the aperture of the mesh of the second sieve 14; however, the aperture of the mesh of the second sieve 14 in different fine grinding and screening cylinders 7 may be the same or different, that is, the mesh size of the second sieve 14 in different fine grinding and screening cylinders 7 may be the same or different.

[0041] In this embodiment, the driving device 11 adopts an electric motor; it should be noted that the rotating shaft of the rotating platform 3 and the output shaft of the driving device 11 are offset from each other to achieve eccentric rotation of the rotating platform 3. Specifically, an adapter plate 10 is fixedly connected to the output shaft of the driving device 11, and the rotating platform 3 is fixedly connected to the adapter plate 10 via a connecting shaft 9, and the connecting shaft 9 is not coaxial with the output shaft of the driving device 11.

[0042] In this embodiment, the cover plate 1 is connected to the rotating platform 3 through at least two fixing rods 2, the bottom end of the fixing rod 2 is threadedly connected to the rotating platform 3, the top of the fixing rod 2 passes through the cover plate 1, and the top end of the fixing rod 2 is connected with a first bolt, and the bottom surface of the first bolt abuts against the top surface of the cover plate 1. The function of the cover plate 1 is, on the one hand, to seal the top opening of the coarse grinding and screening disc 4, and on the other hand, since the fixing rod 2 is fixedly connected to the rotating platform 3, by tightening the first bolt on the fixing rod 2, the first bolt applies a vertical downward pressure to the cover plate 1, and then the cover plate 1 applies a vertical downward pressure to the coarse grinding and screening disc 4, the coarse grinding and screening disc 4 applies a vertical downward pressure to the sample dividing disc 5, the sample dividing disc 5 applies a vertical downward pressure to the fine grinding and screening cylinder 7, the fine grinding and screening cylinder 7 applies a vertical downward pressure to the collecting bottle 8, and the collecting bottle 8 abuts against the rotating platform 3, thereby achieving the clamping of the screening and collecting mechanism.

[0043] In the optional scheme of this embodiment, it is more preferred that a placement groove is provided on the rotating platform 3 corresponding to the collecting bottle 8, and the shape and size of the placement groove are the same as the shape and size of the bottom end of the corresponding collecting bottle 8. The bottom end of the collecting bottle 8 is placed in the corresponding placement groove, so that the position of the collecting bottle 8 is more fixed, and the collecting bottle 8 is less likely to shake during operation.

[0044] In this embodiment, a first inserting tube 13 for inserting into the sampling disk 5 is disposed at the bottom end of the coarse grinding and screening disk 4 , and the outer diameter of the first inserting tube 13 is equal to the inner diameter of the top end of the sampling disk 5 .

[0045] In this embodiment, a diversion groove 501 is provided on the bottom surface of the sample dividing plate 5 corresponding to each diversion port 502. The diversion groove 501 is a curved groove, and the diversion port 502 is arranged at the lowest point of the corresponding diversion groove 501, so that the soil entering the sample dividing plate 5 can automatically flow to each diversion port 502 under the action of its own weight; and all the diversion ports 502 are evenly distributed along the circumference of the sample dividing plate 5, and the shapes and sizes of each diversion groove 501 are exactly the same, so as to ensure that the soil flowing to each diversion port 502 is uniform.

[0046] In this embodiment, the bottom end of each diversion port 502 is provided with a second plug-in cylinder 6 for inserting into the corresponding fine grinding and screening cylinder 7, and the outer diameter of the second plug-in cylinder 6 is equal to the inner diameter of the corresponding fine grinding and screening cylinder 7. The docking of the second plug-in cylinder 6 and the fine grinding and screening cylinder 7 ensures the sealing of the connection between the diversion port 502 and the fine grinding and screening cylinder 7.

[0047] In this embodiment, the bottom end of each fine grinding and screening cylinder 7 is inserted into the corresponding collecting bottle 8, and the outer diameter of the fine grinding and screening cylinder 7 is equal to the inner diameter of the corresponding collecting bottle 8, and the bottom end of the fine grinding and screening cylinder 7 is abutted against the bottom surface of the collecting bottle 8; after the screening is completed, the lower half of the fine grinding and screening cylinder 7 is taken out from the collecting bottle 8, and the soil sample that has been finely ground and screened will be directly retained in the collecting bottle 8, which is convenient to use.

[0048] In this embodiment, the coarse grinding and screening disc 4 and the fine grinding and screening cylinder 7 are made of plastic, which not only has low cost, but also has limited grinding force of the coarse grinding and screening disc 4 and the fine grinding and screening cylinder 7 made of plastic, thereby ensuring that stones, gravel and plant roots in the soil are not ground and screened.

[0049] In this embodiment, there are four diversion ports 502, fine grinding and screening cylinders 7 and collecting bottles 8; in actual production applications, the number of diversion ports 502, fine grinding and screening cylinders 7 and collecting bottles 8 can be adjusted according to actual specific needs.

[0050] The specific method of using the fully automated soil sample preparation device 100 of this embodiment is as follows:

[0051] First, remove the cover 1, then place the soil sample in the coarse grinding and screening disk 4, and place agate grinding media in the coarse grinding and screening disk 4 and the fine grinding and screening cylinder 7. Note that the agate grinding media in the coarse grinding and screening disk 4 should be located above the first screen 12, and the agate grinding media in the fine grinding and screening cylinder 7 should be located above the second screen 14. Then place the collecting bottle 8 on the rotating platform 3, insert the bottom of the fine grinding and screening cylinder 7 into the collecting bottle 8, set the sample dividing disk 5 on the fine grinding and screening cylinder 7, and insert the second plug-in cylinder 6 into the corresponding fine grinding and screening cylinder 7, then insert the bottom of the coarse grinding and screening disk 4 into the top of the sample dividing disk 5, then cover the cover 1, so that the cover 1 is sleeved on the two fixing rods 2, and then tighten the first bolt on the fixing rod 2 so that the first bolt presses the cover 1 downward. Finally, the driving device 11 is started so that the driving device 11 drives the rotating platform 3 to rotate. After the driving device 11 runs for a set time, the coarse mixing, coarse grinding, sampling, fine grinding and collection of the soil sample are completed.

[0052] In the description of the present invention, it should be noted that the terms "top", "bottom", "vertical", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0053] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A fully automated soil sample preparation device, characterized in that: include: Rotating platform; A driving device, the driving device is used to drive the rotating platform to rotate; A cover plate is arranged above the rotating platform, and the cover plate is detachably connected to the rotating platform; The screening and collecting mechanism is sandwiched between the cover plate and the rotating platform, and the screening and collecting mechanism comprises a coarse grinding screening disc, a sample dividing disc, a fine grinding screening cylinder and a collecting bottle which are arranged in sequence from top to bottom; the top opening of the coarse grinding screening disc abuts against the bottom surface of the cover plate; a first screen is arranged at the bottom of the coarse grinding screening disc, the top of the sample dividing disc is sealedly connected to the bottom end of the coarse grinding screening disc, a plurality of diversion ports are arranged on the bottom surface of the sample dividing disc, the diversion ports, the fine grinding screening cylinder and the collecting bottle correspond to each other one by one, all the fine grinding screening cylinders are distributed along the circumference of the rotating platform, and all the collecting bottles are distributed along the circumference of the rotating platform; the top of the fine grinding screening cylinder is connected to the corresponding diversion port, a second screen is arranged in the fine grinding screening cylinder, the aperture of the mesh of the first screen is larger than the aperture of the mesh of the second screen, the top of the collecting bottle is sealedly connected to the bottom end of the corresponding fine grinding screening cylinder, and the bottom end of the collecting bottle abuts against the top surface of the rotating platform.

2. The fully automated soil sample preparation device according to claim 1, characterized in that: The cover plate is connected to the rotating platform through at least two fixing rods, the bottom ends of the fixing rods are threadedly connected to the rotating platform, the tops of the fixing rods pass through the cover plate, the top ends of the fixing rods are connected to the first bolts, and the bottom surfaces of the first bolts abut against the top surfaces of the cover plate.

3. The fully automated soil sample preparation device according to claim 1, characterized in that: The bottom end of the coarse grinding and screening disc is provided with a first plug-in tube for inserting into the sample dividing disc, and the outer diameter of the first plug-in tube is equal to the inner diameter of the top end of the sample dividing disc.

4. The fully automated soil sample preparation device according to claim 1, characterized in that: The bottom surface of the sample separation plate is provided with a diversion groove corresponding to each diversion port, the diversion groove is a curved groove, and the diversion port is arranged at the lowest point of the corresponding diversion groove.

5. The fully automated soil sample preparation device according to claim 1, characterized in that: The bottom end of each diversion port is provided with a second plug-in cylinder for inserting into the corresponding fine grinding and screening cylinder, and the outer diameter of the second plug-in cylinder is equal to the inner diameter of the corresponding fine grinding and screening cylinder.

6. The fully automated soil sample preparation device according to claim 1, characterized in that: The bottom end of each fine grinding and screening cylinder is inserted into the corresponding collecting bottle, and the outer diameter of the fine grinding and screening cylinder is equal to the inner diameter of the corresponding collecting bottle, and the bottom end of the fine grinding and screening cylinder abuts against the bottom surface of the collecting bottle.

7. The fully automated soil sample preparation device according to claim 1, characterized in that: The coarse grinding and screening disc and the fine grinding and screening cylinder are both made of plastic.

8. The fully automated soil sample preparation device according to claim 1, characterized in that: There are four diversion ports, four fine grinding and screening cylinders, and four collecting bottles.

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