Automatic preparation equipment for soil sample to be detected

Abstract

The invention relates to the technical field of soil sample preparation, and discloses to-be-detected soil sample automatic preparation equipment which comprises a machine body, a rotating seat is arranged in the machine body, a mounting cylinder is arranged on the inner wall of the rotating seat, a first breast board is arranged in the mounting cylinder, a second breast board is arranged in the mounting cylinder, and a bearing disc is arranged at the top of the rotating seat. In the vertical section of the bearing disc, the top face of the bearing disc is sunken towards the center, a mixing assembly is arranged at the top of the bearing disc, and a lifting assembly is arranged on the mixing assembly. According to the automatic preparation equipment for the soil sample to be detected, the soil sample to be detected can be loaded by a quartering method, and after the quartering method is finished, the residual soil sample to be detected can be loaded by a multi-point sampling method, so that human errors caused by manual operation, such as errors caused by fatigue possibly occurring in repeated tasks, are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of soil sample preparation, and in particular to an automatic preparation device for soil samples to be tested. Background Art

[0002] Soil analysis is an indispensable part of many fields such as environmental science, agriculture, geological exploration, etc. Accurate soil analysis requires high-quality sample preparation to improve the accuracy, reliability and comparability of analytical data.

[0003] Reference Figure 1 The preparation process of the collected soil samples to be tested usually includes cleaning the soil samples to be tested (removing large particles of impurities), drying (air drying or drying at low temperature), crushing (to a certain particle size to achieve homogenization), screening (preliminary screening through a 2mm pore size mesh), homogenization (thorough mixing to ensure sample consistency), sub-sampling (taking appropriate amount of samples for analysis), further processing (crushing and sieving analysis), and cleaning the sample bottles.

[0004] In the process of dividing sub-samples, the laboratory first needs to divide the soil sample to be tested into four equal parts, and then take nearly half of the soil sample as the first type of sub-sample. After weighing and recording the first sub-sample, mix the remaining soil sample again, and then divide the remaining soil sample to be tested into multiple equal parts, and then take a part of the soil sample from each part to ensure that each sampling point can contribute to the final sub-sample as the second type of sub-sample.

[0005] The existing technology has mature equipment for cleaning (removing large particles of impurities), drying (air drying or oven drying at low temperature), crushing (to a certain particle size to achieve homogenization), screening (preliminary screening through a 2mm mesh), and cleaning sample bottles. However, for the homogenization and loading steps, soil sample preparation still relies mainly on manual operations, which is not only time-consuming and labor-intensive, but also prone to human error, affecting the consistency and repeatability of sample processing.

[0006] Another example is the Chinese patent publication number CN111855336A, which discloses a fully automatic soil sample preparation system, which includes: a crushing and grinding mechanism, a screening mechanism, a sample loading mechanism, a manipulator, and a cleaning component, wherein: the crushing and grinding mechanism is used to grind the soil sample; the screening mechanism is used to screen the ground soil sample; the sample loading mechanism is used to quarter the sieved soil sample; the manipulator is used to transfer the soil sample; and the cleaning component is used to clean the container containing the soil sample.

[0007] The above patent still has the following defects: Although the sample loading mechanism in the above-mentioned prior art can perform quartering sampling on the sieved soil sample, in the process of preparing the soil sample to be tested, in addition to the quartering sampling, the multi-point sampling method is also required to sample the soil sample to be tested. Obviously, after completing the quartering sampling, the above-mentioned prior art is unable to mix the remaining soil sample to be tested and then divide it into multiple equal parts, and take a part of the soil sample from each part to ensure that each sampling point can contribute to the final generated sub-sample. Therefore, the above-mentioned prior art still has certain limitations during use. In the homogenization sampling step, it is difficult to adapt to the multi-point sampling method. Summary of the Invention

[0008] In view of the fact that in the existing technology, the preparation of soil samples still mainly relies on manual operation in the homogenization and loading steps, which is not only time-consuming and labor-intensive, but also prone to human errors, affecting the consistency and repeatability of sample processing, an automatic preparation device for soil samples to be tested is proposed.

[0009] The present application provides an automatic preparation device for soil samples to be tested, the purpose of which is to: the device can automatically perform quartering sampling on the soil samples to be tested, and after the quartering sampling is completed, the remaining soil samples to be tested can be sampled by multi-point sampling, thereby reducing human errors caused by manual operation, such as mistakes caused by fatigue that may occur in repetitive tasks.

[0010] The technical solution of the present invention is: an automatic preparation device for soil samples to be tested, including a body, a cleaning mechanism arranged inside the body for removing impurities in the soil sample, a drying mechanism arranged inside the body for drying the soil sample, a first screening mechanism arranged inside the body for screening the soil sample, a transport mechanism arranged inside the body for transporting the soil sample, a crushing mechanism arranged inside the body for crushing the soil sample, a second screening mechanism arranged inside the body for screening the soil sample, and a washing mechanism arranged inside the body for cleaning the sample bottle, a rotating seat is arranged inside the body, an inner wall of the rotating seat is provided with a mounting cylinder, a first baffle is provided inside the mounting cylinder, and a second baffle is provided inside the mounting cylinder. The baffle and the rotating seat are provided with a carrying plate on the top, and in the vertical section of the carrying plate, the top surface of the carrying plate is recessed toward the center, the top surface of the carrying plate is provided with a first through slot for the first baffle to pass through, the inner wall of the first through slot is elastically installed with a first baffle, the top surface of the carrying plate is provided with a second through slot for the second baffle to pass through, the inner wall of the second through slot is elastically installed with a second baffle, the outer wall of the first baffle is provided with a slot for the second baffle to be inserted; the top surface of the carrying plate is provided with a discharge port, the inner wall of the discharge port is provided with a membrane flap, the outer wall of the first baffle is provided with a first discharge pipe for passing through the membrane flap, and the outer wall of the second baffle is provided with a second discharge pipe for passing through the membrane flap; a mixing assembly is provided on the top of the carrying plate, and a lifting assembly is provided on the mixing assembly.

[0011] Furthermore, the mixing assembly includes a sleeve arranged on the top of the carrier plate, a stirring rod arranged on the wall of the sleeve, a through hole opened on the top surface of the carrier plate for the sleeve to slide, and a limiting ring arranged on the top surface of the carrier plate.

[0012] Furthermore, the lifting assembly includes a lifting rod arranged inside the sleeve, a guide block arranged on the inner wall of the sleeve, and a guide groove opened on the wall of the lifting rod for the guide block to slide.

[0013] Furthermore, the lifting assembly also includes a first circular ring arranged on the outer wall of the first guardrail, a second support plate arranged on the outer wall of the first guardrail, a first support plate arranged on the outer wall of the second guardrail, and a second circular ring arranged on the inner wall of the first support plate, and the outer wall of the second discharge pipe is fixedly connected to the outer wall of the first support plate, the outer wall of the first discharge pipe is fixedly connected to the outer wall of the second support plate, and the outer wall of the first discharge pipe is slidingly connected to the outer wall of the first support plate; the lifting assembly also includes a first wedge block arranged inside the lifting rod, a second wedge block arranged inside the lifting rod, and a connecting plate arranged inside the lifting rod, and the outer wall of the connecting plate is fixedly connected to the outer wall of the second wedge block, the outer wall of the connecting plate is fixedly connected to the outer wall of the first wedge block, and two of the first wedge block, the second wedge block, and the connecting plate are each provided; the lifting assembly also includes a first elastic member arranged between the two connecting plates.

[0014] Furthermore, the side wall of the second baffle is provided with a first clamping plate, the top surface of the carrying plate is provided with a first groove for blocking the first clamping plate, the side wall of the first baffle is provided with a second clamping plate, and the top surface of the carrying plate is provided with a second groove for blocking the first baffle.

[0015] Furthermore, a positioning block is provided on the bottom surface of the carrying plate, and a positioning groove is provided on the top surface of the rotating seat.

[0016] Furthermore, a first limiting plate is provided on the inner wall of the installation cylinder, and the first baffle slides inside the first limiting plate; a second limiting plate is provided on the inner wall of the installation cylinder, and the second baffle slides inside the second limiting plate.

[0017] Furthermore, the inner wall of the body is provided with an L-shaped plate, the outer wall of the L-shaped plate is provided with a fixed seat, the outer wall of the fixed seat is rotatably connected to the outer wall of the rotating seat, the outer wall of the L-shaped plate is provided with a slide rail, the inside of the slide rail is provided with a slide plate, the outer wall of the L-shaped plate is provided with an electric telescopic rod, and the movable end of the electric telescopic rod is fixedly connected to the side wall of the slide plate, the rod wall of the lifting rod is provided with a fixed cylinder, the outer wall of the fixed cylinder is provided with an insertion rod, the end of the insertion rod away from the fixed cylinder is elastically mounted with an extension rod, the end of the extension rod away from the insertion rod is inserted into the inside of the slide, the outer wall of the fixed cylinder is provided with a T-shaped plate, the outer wall of the L-shaped plate is provided with a guide frame, and the T-shaped plate slides inside the guide frame, the outer wall of the guide frame is provided with an arc plate, and the top surface of the fixed cylinder is provided with an arc groove for the arc plate to pass through.

[0018] Furthermore, a mounting plate is provided on the outer wall of the L-shaped plate, a driving motor is provided on the top surface of the mounting plate, a second gear is provided at the axial end of the driving motor, a first gear is provided on the outer wall of the mounting cylinder, and the outer wall of the second gear is meshed with the outer wall of the first gear.

[0019] Furthermore, the slide plate includes an initial section, a first mixing section, a first discharging section, a second mixing section, a second discharging section, a separation section, and a reset section.

[0020] Beneficial effects of the present invention: By precisely controlling the retraction or extension of the movable end of the electric telescopic rod, the extension rod can slide between the initial section, the first mixing section, the first discharging section, the second mixing section, the second discharging section, the separation section, and the reset section, thereby ensuring that the mixing component contacts or separates from the soil sample at the correct moment, and that the first baffle and the second baffle rise or fall within the appropriate time, thereby achieving efficient and uniform soil sample processing. This automated operation not only significantly improves the accuracy and repeatability of the sampling process, but also greatly reduces the operator's workload and reduces human errors caused by manual operation, such as mistakes caused by fatigue that may occur in repetitive tasks.

[0021] By combining the quartering method with the multi-point sampling method, the device can efficiently and thoroughly mix and evenly distribute the soil samples to be tested. During the mixing stage, the mixing component does not rotate but the carrier plate rotates, thereby achieving effective mixing of the soil samples. During the distribution stage, through the lifting of the first or second baffle plate, in conjunction with the specific discharge port, the first discharge pipe and the second discharge pipe, the sample can be divided into four equal parts or multi-point sampling can be performed, further ensuring the uniformity and representativeness of each sample, which not only improves the accuracy of soil analysis data, but also provides a solid foundation for scientific research or quality inspection.

[0022] By simply controlling the rise or fall of the lifting rod and the rotation speed of the rotating seat, it can adapt to the processing of soil samples of different types and magnitudes. In addition, this device takes into account the adjustability and expandability of the equipment. For example, the slide can be detachably installed on the movable end of the electric telescopic rod by bolts or clips. The staff can disassemble the slide and then press the extension rod into the inside of the plug rod to remove the slide from the inside of the slide rail and then replace it with a new slide. By replacing the slide, the working parameters of the device can be easily adjusted to meet diverse experimental needs. This high efficiency and strong adaptability enable the equipment to maintain good performance under changing experimental conditions, significantly improving work efficiency.

[0023] The design of key structural components such as the slide allows for quick disassembly and replacement, making daily maintenance of the equipment simple and convenient. In particular, after completing a series of soil sample processing, the operator can easily replace the carrier plate and slide to quickly prepare the next batch of samples, significantly reducing equipment downtime. This not only improves the equipment's utilization efficiency, but also extends its service life and reduces operating costs. User-friendliness is fully taken into consideration, and ease of operation and maintenance are its notable features. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The flowchart for the preparation of soil samples to be tested is shown in FIG. Figure 2 This is a schematic diagram of the installation of the machine body in the present invention; Figure 3 is a three-dimensional diagram of the carrier plate of the present invention; Figure 4 This is a schematic diagram of the installation of the guide block in the present invention; Figure 5 is a cross-sectional view of the lifting rod in the present invention; Figure 6 is a cross-sectional view of the carrier plate of the present invention; Figure 7 For the present invention Figure 6 A in the middle is an enlarged schematic diagram; Figure 8 A top view of the carrier plate of the present invention; Figure 9 For the present invention Figure 8 The enlarged schematic diagram of point B in the middle; Figure 10 For the present invention Figure 8 Enlarged schematic diagram at point C in the middle; Figure 11 This is a schematic diagram of the interior of the installation cylinder in the present invention; Figure 12 This is a schematic diagram of the installation of the first ring in the present invention; Figure 13 This is a schematic diagram of the installation of the second ring in the present invention; Figure 14 This is a schematic diagram of the installation of the positioning block in the present invention; Figure 15 This is a schematic diagram of the lifting of the second guardrail in the present invention; Figure 16 This is a schematic diagram of the installation of the slide plate of the present invention; Figure 17 This is a schematic diagram of the installation of the drive motor in the present invention; Figure 18 This is a schematic diagram of the installation of the rotating seat in the present invention; Figure 19 Schematic diagram of the composition of the slide plate in the present invention; Figure 20 Schematic diagram of the installation of the extension rod in the present invention.

[0025] In the picture: 1. Machine body; 2. Cleaning mechanism; 3. Drying mechanism; 4. First screening mechanism; 5. Transfer mechanism; 6. Crushing mechanism; 7. Second screening mechanism; 8. Cleaning mechanism; 9. Rotating seat; 10. Mounting cylinder; 11. First fence; 12. Second fence; 13. Carrying plate; 14. First through-slot; 15. First baffle; 16. Second through-slot; 17. Second baffle; 18. Mixing assembly; 19. Sleeve; 20. Stirring rod; 21. Limiting ring; 22. Lifting assembly; 23. Lifting rod; 24. Guide block; 25. Guide groove; 26. First wedge block; 27. Second wedge block; 28. Connecting plate; 29. First elastic member; 30. Discharge port; 31. Membrane flap; 32. First discharge pipe; 33. Second discharge pipe; 34. First round Ring; 35. Second circular ring; 36. First supporting plate; 37. First limiting plate; 38. Second limiting plate; 39. First clamping plate; 40. Second clamping plate; 41. Second supporting plate; 42. Clamping slot; 43. Positioning slot; 44. Positioning block; 45. L-shaped plate; 46. Slide rail; 47. Slide plate; 48. Electric telescopic rod; 49. Fixed cylinder; 50. Insert rod; 51. T-shaped plate; 52. Guide frame; 53. Arc plate; 54. Arc slot; 55. Fixed seat; 56. Mounting plate; 57. Drive motor; 58. First gear; 59. Second gear; 60. Extension rod; 61. Initial section; 62. First mixing section; 63. First discharging section; 64. Second mixing section; 65. Second discharging section; 66. Separation section; 67. Reset section. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0027] Example 1, with reference to Figure 2-Figure 15 , which is a first embodiment of the present invention, provides an automatic preparation device for soil samples to be tested, comprising a body 1, a cleaning mechanism 2 disposed inside the body 1 for removing impurities in the soil sample, a drying mechanism 3 disposed inside the body 1 for drying the soil sample, a first screening mechanism 4 disposed inside the body 1 for screening the soil sample, a transport mechanism 5 disposed inside the body 1 for transporting the soil sample, a crushing mechanism 6 disposed inside the body 1 for crushing the soil sample, a second screening mechanism 7 disposed inside the body 1 for screening the soil sample, and a cleaning mechanism 8 disposed inside the body 1 for cleaning the sample bottle. Specifically, the cleaning mechanism 2 can be a vibrating screen or a cyclone separator, which is used to remove larger particulate impurities in the soil sample, such as stones and plant roots; the drying mechanism 3 can be an oven or a dryer, which can control the temperature and dry the soil sample to remove moisture from the sample; the first screening mechanism 4 can be a set of vibrating screening machines with screens of different apertures, which is used to perform preliminary screening of soil samples according to particle size; the transport mechanism 5 can be a conveyor belt system or a robotic arm transport device, which is used to transport soil samples between various parts of the equipment; the crushing mechanism 6 can be a ball mill, a hammer crusher or a knife grinder, which is used to crush the soil sample to a finer particle size; the second screening mechanism 7 can be a fine mesh screen, which is used to screen the crushed soil sample to obtain soil within the required particle size range; the cleaning mechanism 8 can be an ultrasonic cleaning machine or an automatic bottle washer, which is used to clean and disinfect the container of the soil sample.

[0028] Among them, the cleaning mechanism 2, the drying mechanism 3, the first screening mechanism 4, the transfer mechanism 5, the crushing mechanism 6, the second screening mechanism 7 and the cleaning mechanism 8 are all mature existing technologies and will not be described in detail here. These mechanisms usually appear in a modular form in the laboratory automation system. The present device integrates them into an automated device, thereby improving the degree of automation of soil sample preparation, optimizing the operation process, reducing work intensity, and improving work efficiency and the quality of analysis data.

[0029] Reference Figures 1-13 A rotating seat 9 is rotatably installed inside the body 1, and a mounting cylinder 10 is fixedly installed on the inner wall of the rotating seat 9. A first baffle 11 is slidably installed inside the mounting cylinder 10, and a second baffle 12 is slidably installed inside the mounting cylinder 10. A carrying plate 13 is set on the top of the rotating seat 9, and in the vertical section of the carrying plate 13, the top surface of the carrying plate 13 is recessed at the center, and a first through groove 14 for the first baffle 11 to pass through is provided on the top surface of the carrying plate 13, and a first baffle 15 is elastically installed on the inner wall of the first through groove 14. A second through groove 16 for the second baffle 12 to pass through is provided on the top surface of the carrying plate 13, and a second baffle 17 is elastically installed on the inner wall of the second through groove 16. The outer wall of the first baffle 11 is provided with a slot 42 for the second baffle 12 to be inserted.

[0030] A discharge port 30 is provided on the top surface of the carrier plate 13, and a membrane flap 31 is fixedly installed on the inner wall of the discharge port 30. A first discharge pipe 32 for passing through the membrane flap 31 is provided on the outer wall of the first fence 11, and a second discharge pipe 33 for passing through the membrane flap 31 is provided on the outer wall of the second fence 12.

[0031] A mixing assembly 18 is disposed on the top of the carrier plate 13 , and a lifting assembly 22 is disposed on the mixing assembly 18 .

[0032] Specifically, the mixing assembly 18 is used to mix the soil in the supporting plate 13, and the lifting assembly 22 is used to lift the mixing assembly 18 and the first baffle 11, or to lift the mixing assembly 18, the first baffle 11 and the second baffle 12. The first baffle 15 is elastically installed on the inner wall of the first through groove 14 through a torsion spring or a coil spring, and the second baffle 17 is elastically installed on the inner wall of the second through groove 16 through a torsion spring or a coil spring. When the first baffle 15 or the second baffle 17 rotates upward and loses the extrusion force, the first baffle 15 and the second baffle 17 can automatically reset, and the membrane flap 31 can prevent the soil sample to be tested inside the supporting plate 13 from passing through the discharge port 30. At the same time, the first discharge pipe 32 and the second discharge pipe 33 can pass through the membrane flap 31 upward. The membrane flap 31 can be made of silicone, rubber or polytetrafluoroethylene commonly used in the prior art.

[0033] In the vertical section of the supporting plate 13 , the top surface of the supporting plate 13 is concave at the center, which facilitates the passage of the soil sample to be tested through the first discharge pipe 32 and the second discharge pipe 33 .

[0034] When it is necessary to perform quartering sampling of the soil sample to be tested, first place the supporting plate 13 containing the soil sample to be tested on the rotating seat 9, then control the rotating seat 9 to rotate, drive the supporting plate 13 to rotate, and then control the lifting assembly 22 to descend, drive the mixing assembly 18 to descend, and mix the soil to be tested in the supporting plate 13. After the soil sample to be tested is fully mixed, control the lifting assembly 22 to rise. At this time, the lifting assembly 22 can drive the first baffle 11 and the mixing assembly 18 to rise, and the mixing assembly 18 no longer contacts the soil sample to be tested. The first baffle 11 opens the first baffle 15 through the first through slot 14. Through the multiple first baffles 11 set, the soil sample on the supporting plate 13 can be divided into four equal parts. At the same time, the rise of the first baffle 11 drives the first discharge pipe 32 to rise, and makes the first discharge pipe 32 pass through the membrane petal 31, wherein one-fourth of the soil sample can flow downward through the inside of the first discharge pipe 32, realizing the quartering sampling of the soil sample to be tested.

[0035] When it is necessary to perform multi-point sampling on the soil sample, after completing the quarter sampling of the soil sample to be tested, the lifting assembly 22 is controlled to descend, which can drive the multiple first baffles 11 and the mixing assembly 18 to descend until the multiple first baffles 11 return to the initial position, and the mixing assembly 18 re-mixes the remaining soil samples to be tested inside the carrier plate 13, and the lifting assembly 22 contacts the multiple second baffles 12. When the remaining soil samples to be tested inside the carrier plate 13 are fully mixed, the lifting assembly 22 is controlled to rise. At this time, the lifting assembly 22 can successively drive the multiple second baffles 12, the multiple first baffles 11 and the mixing assembly 18 to rise. Finally, the multiple second baffles 12 pass through the second through slot 16 opens the second baffle 17, and multiple first baffles 11 open the first baffle 15 through the first through slot 14, which can divide the remaining soil samples on the supporting plate 13 into multiple areas, and the number of discharge ports 30 in the multiple areas is determined according to the size of each area, thereby improving the uniformity of soil sampling. At the same time, the second baffle 12 rises, driving the second discharge pipe 33 to rise, and allowing the second discharge pipe 33 to pass through the membrane petal 31. The first baffle 11 rises, driving the first discharge pipe 32 to rise, and allowing the first discharge pipe 32 to pass through the membrane petal 31. The soil samples to be tested in multiple areas can flow downward through the first discharge pipe 32 or the second discharge pipe 33, thereby realizing a multi-point sampling method for the remaining soil samples to be tested.

[0036] Reference Figure 3-Figure 4 The mixing assembly 18 includes a sleeve 19 slidably mounted on the top of the carrier plate 13, a stirring rod 20 fixedly mounted on the wall of the sleeve 19, a through hole opened on the top surface of the carrier plate 13 for the sleeve 19 to slide, and a limiting ring 21 fixedly mounted on the top surface of the carrier plate 13.

[0037] Specifically, the limiting ring 21 can prevent the soil sample to be tested inside the carrying plate 13 from overflowing the limiting ring 21 and entering the inside of the through hole. A plurality of stirring rods 20 are provided.

[0038] Reference Figure 4 The lifting assembly 22 includes a lifting rod 23 slidably mounted inside the sleeve 19, a guide block 24 fixedly mounted on the inner wall of the sleeve 19, and a guide groove 25 opened on the rod wall of the lifting rod 23 for the guide block 24 to slide.

[0039] Specifically, the lifting rod 23 and the sleeve 19 can be combined together through the cooperation between the guide block 24 and the guide groove 25 to ensure that the two will not rotate relative to each other.

[0040] Reference Figure 12-13The lifting assembly 22 also includes a first circular ring 34 fixedly installed on the outer wall of the first guardrail 11, a second support plate 41 fixedly installed on the outer wall of the first guardrail 11, a first support plate 36 fixedly installed on the outer wall of the second guardrail 12, and a second circular ring 35 fixedly installed on the inner wall of the first support plate 36, and the outer wall of the second discharge pipe 33 is fixedly connected to the outer wall of the first support plate 36, the outer wall of the first discharge pipe 32 is fixedly connected to the outer wall of the second support plate 41, and the outer wall of the first discharge pipe 32 is slidably connected to the outer wall of the first support plate 36.

[0041] Specifically, the second support plate 41 provides installation space for the first discharge pipe 32 and the first ring 34, and the first support plate 36 provides installation space for the second discharge pipe 33 and the second ring 35. The outer wall of the first discharge pipe 32 is slidably connected to the outer wall of the first support plate 36, further improving the stability of the first railing 11 and the second railing 12 when sliding.

[0042] Reference Figure 5-Figure 7 The lifting assembly 22 also includes a first wedge block 26 slidably installed inside the lifting rod 23, a second wedge block 27 slidably installed inside the lifting rod 23, and a connecting plate 28 slidably installed inside the lifting rod 23, and the outer wall of the connecting plate 28 is fixedly connected to the outer wall of the second wedge block 27, and the outer wall of the connecting plate 28 is fixedly connected to the outer wall of the first wedge block 26. There are two first wedge blocks 26, two second wedge blocks 27, and two connecting plates 28. The lifting assembly 22 also includes a first elastic member 29 arranged between the two connecting plates 28.

[0043] Specifically, the first wedge block 26 is inclined near one side of the first ring 34 and the second ring 35, and the second wedge block 27 is inclined away from one side of the first ring 34 and the second ring 35. When the inclined surface of the first wedge block 26 contacts the top surface of the first ring 34 or the second ring 35, the first wedge block 26 will be squeezed into the interior of the lifting rod 23. When the first wedge block 26 is separated from the first ring 34 or the second ring 35, the first wedge block 26 is reset under the elastic force of the first elastic member 29. At this time, the top surface of the first wedge block 26 is engaged with the bottom surface of the first ring 34 or the second ring 35. When the lifting rod 23 rises, the first wedge block 26 can synchronously drive the first ring 34 or the second ring 35 to rise, and then can synchronously drive the first fence 11 or the second fence 12 to rise. The first elastic member 29 can be a compression spring or elastic plate commonly used in the prior art, and a compression spring is preferably used here.

[0044] Reference Figures 8-10 The side wall of the second baffle 17 is fixedly connected to the first clamping plate 39, and the top surface of the carrying plate 13 is provided with a first groove for blocking the first clamping plate 39. The side wall of the first baffle 15 is fixedly connected to the second clamping plate 40, and the top surface of the carrying plate 13 is provided with a second groove for blocking the first baffle 15.

[0045] Specifically, the first clamping plate 39 is used to prevent the second baffle 17 from turning downward under the action of the gravity of the soil to be inspected, and the second clamping plate 40 is used to prevent the first baffle 15 from turning downward under the action of the gravity of the soil to be inspected, further improving the stability of the device.

[0046] Reference Figure 11 ,as well as Figure 14 A positioning block 44 is fixedly connected to the bottom surface of the carrying plate 13 , and a positioning groove 43 is opened on the top surface of the rotating seat 9 .

[0047] Specifically, the cooperation between the positioning block 44 and the positioning groove 43 can ensure that the carrier plate 13 can rotate synchronously with the rotating base 9, and then cooperate with the mixing assembly 18 to achieve a sufficient mixing effect on the soil sample to be tested.

[0048] Reference Figure 11-13 The inner wall of the mounting tube 10 is fixedly connected to a first limit plate 37, and the first baffle 11 slides inside the first limit plate 37. The inner wall of the mounting tube 10 is fixedly connected to a second limit plate 38, and the second baffle 12 slides inside the second limit plate 38.

[0049] Specifically, the first limiting plate 37 is used to ensure that the first baffle 11 moves in the vertical direction inside the mounting tube 10, and the second limiting plate 38 is used to ensure that the second baffle 12 moves in the vertical direction inside the mounting tube 10, and can ensure that the second baffle 12 passes through the slot 42, and then when the second baffle 12 rises, it can push the first baffle 11 to rise synchronously.

[0050] Example 2, reference Figures 16-20 , which is the second embodiment of the present invention, which is different from the first embodiment in that: the inner wall of the body 1 is fixedly connected to an L-shaped plate 45, the outer wall of the L-shaped plate 45 is fixedly connected to a fixed seat 55, the outer wall of the fixed seat 55 is rotatably connected to the outer wall of the rotating seat 9, the outer wall of the L-shaped plate 45 is fixedly connected to a slide rail 46, the inner part of the slide rail 46 is slidably installed with a slide plate 47, the outer wall of the L-shaped plate 45 is fixedly connected to an electric telescopic rod 48, and the movable end of the electric telescopic rod 48 is fixedly connected to the side wall of the slide plate 47, and the rod wall of the lifting rod 23 is fixed. It is connected to a fixed cylinder 49, and an insertion rod 50 is fixedly connected to the outer wall of the fixed cylinder 49. An extension rod 60 is elastically installed on the end of the insertion rod 50 away from the fixed cylinder 49. The end of the extension rod 60 away from the insertion rod 50 is inserted into the interior of the slide plate 47. The outer wall of the fixed cylinder 49 is fixedly connected to a T-shaped plate 51, and the outer wall of the L-shaped plate 45 is fixedly connected to a guide frame 52, and the T-shaped plate 51 slides inside the guide frame 52. The outer wall of the guide frame 52 is fixedly connected to an arc plate 53, and the top surface of the fixed cylinder 49 is provided with an arc groove 54 for the arc plate 53 to pass through.

[0051] Specifically, through the cooperation between the electric telescopic rod 48, the slide plate 47, the slide rail 46, the insertion rod 50, the extension rod 60 and the fixed cylinder 49, the lifting or lowering power can be provided for the lifting rod 23. Through the cooperation between the T-shaped plate 51 and the guide frame 52, it can be ensured that the lifting rod 23 can only move in the vertical direction. The top surface of the arc plate 53 is provided with a receiving hole (not numbered in the figure) for the lifting rod 23 to pass through. Through the set arc plate 53, when the lifting rod 23 rises to a certain height, the arc plate 53 can squeeze the two second wedge blocks 27, and then squeeze the two second wedge blocks 27 into the interior of the lifting rod 23. Under the action of the connecting plate 28, the two first wedge blocks 26 can be driven into the interior of the lifting rod 23. At this time, the first wedge block 26 no longer blocks the first ring 34 or the second ring 35, and the first clapboard 11 or the second clapboard 12 can automatically drop and reset under the action of gravity.

[0052] In addition, the extension rod 60 is elastically mounted on the end of the insertion rod 50 away from the fixed tube 49 through a second elastic member. The second elastic member can be a compression spring or spring sheet commonly used in the prior art, and is preferably a compression spring. Moreover, the slide plate 47 is detachably mounted on the movable end of the electric telescopic rod 48 through bolts or clips. Thus, the staff can disassemble the slide plate 47 and then press the extension rod 60 into the interior of the insertion rod 50, and can remove the slide plate 47 from the interior of the slide rail 46, and then can replace the new slide plate 47, thereby changing the relevant parameters when the device is used, and further improving the convenience of using the device.

[0053] Reference Figure 17 The outer wall of the L-shaped plate 45 is fixedly connected to the mounting plate 56, the top surface of the mounting plate 56 is fixedly connected to the driving motor 57, the axial end of the driving motor 57 is fixedly connected to the second gear 59, the outer wall of the mounting cylinder 10 is fixedly connected to the first gear 58, and the outer wall of the second gear 59 is meshed with the outer wall of the first gear 58.

[0054] Specifically, the model of the drive motor 57 can be determined according to actual usage requirements, and will not be elaborated here. By controlling the output shaft of the drive motor 57 to rotate, the second gear 59 can be driven to rotate, and the second gear 59 can drive the first gear 58 to rotate, and then the mounting tube 10 can be driven to rotate. Through the cooperation between the drive motor 57, the second gear 59, and the first gear 58, power can be provided for the rotation of the rotating seat 9.

[0055] Reference Figure 19 The slide plate 47 includes an initial section 61 , a first mixing section 62 , a first discharging section 63 , a second mixing section 64 , a second discharging section 65 , a separation section 66 , and a reset section 67 .

[0056] Specifically, when the extension rod 60 slides from the initial section 61 to the first mixing section 62, the movable end of the electric telescopic rod 48 contracts, the lifting rod 23 descends, driving the mixing assembly 18 to descend, and the first wedge block 26 descends to the bottom of the first ring 34. The supporting plate 13 rotates with the rotating seat 9, while the mixing assembly 18 does not rotate. Therefore, the mixing assembly 18 can mix the soil sample to be tested on the supporting plate 13.

[0057] When the extension rod 60 slides from the first mixing section 62 to the first discharging section 63, the lifting rod 23 rises, driving the mixing assembly 18 and multiple first baffles 11 to rise. The mixing assembly 18 no longer contacts the soil sample to be tested. The first baffle 11 opens the first baffle 15 through the first through groove 14. Through the multiple first baffles 11 set, the soil sample on the supporting plate 13 can be divided into four equal parts. At the same time, the first baffle 11 rises, driving the first discharge pipe 32 to rise, and allowing the first discharge pipe 32 to pass through the membrane petal 31, wherein one-fourth of the soil sample can flow downward through the inside of the first discharge pipe 32, thereby realizing the quartering sampling of the soil sample to be tested.

[0058] When the extension rod 60 slides from the first discharge section 63 to the second mixing section 64 , the lifting rod 23 descends, driving the mixing assembly 18 to descend, and the first wedge block 26 descends to below the second ring 35 . The mixing assembly 18 mixes the remaining soil sample to be tested on the supporting plate 13 .

[0059] When the extension rod 60 slides from the second mixing section 64 to the second discharging section 65, the lifting rod 23 rises and first drives the multiple second baffles 12 to rise, and the multiple second baffles 12 then drive the multiple first baffles 11 to rise. At the same time, the lifting rod 23 drives the mixing assembly 18 to rise. Finally, the multiple second baffles 12 open the second baffle 17 through the second through slot 16, and the multiple first baffles 11 open the first baffle 15 through the first through slot 14, which can divide the remaining soil samples on the supporting plate 13 into multiple areas, and the number of discharge ports 30 in the multiple areas is determined according to the size of each area, thereby improving the uniformity of soil sampling. At the same time, the second baffle 12 rises and drives the second discharge pipe 33 to rise, and the second discharge pipe 33 passes through the membrane petal 31. The first baffle 11 rises and drives the first discharge pipe 32 to rise, and the first discharge pipe 32 passes through the membrane petal 31. The soil samples to be tested in multiple areas can flow downward through the first discharge pipe 32 or the second discharge pipe 33, realizing a multi-point sampling method for the remaining soil samples to be tested.

[0060] When the extension rod 60 slides from the second discharging section 65 to the separation section 66, the arc plate 53 contacts the second wedge block 27, and the arc plate 53 can squeeze the two second wedge blocks 27, and then squeeze the two second wedge blocks 27 into the interior of the lifting rod 23. Under the action of the connecting plate 28, the two first wedge blocks 26 can be driven into the interior of the lifting rod 23. At this time, the first wedge block 26 no longer blocks the first ring 34 or the second ring 35, and the first clapboard 11 or the second clapboard 12 can automatically drop and reset under the action of gravity.

[0061] When the extension rod 60 slides from the separation section 66 to the reset section 67, the movable end of the electric telescopic rod 48 extends, which can drive the extension rod 60 back to the initial section 61. During this process, since the mixing assembly 18 is not in contact with the carrying plate 13, the staff can stop the drive motor 57, remove the carrying plate 13 from the rotating seat 9, and replace the carrying plate 13 and the soil sample to be tested.

[0062] The remaining structures are the same as those of Example 1.

[0063] Based on Example 1-Example 2, the working principle of the present invention is as follows: When it is necessary to perform quartering sampling on the soil sample to be tested, first place the supporting plate 13 containing the soil sample to be tested on the rotating seat 9, and then control the output shaft of the drive motor 57 to rotate, which can drive the rotating seat 9 to rotate, and then drive the supporting plate 13 to rotate, and then control the movable end of the electric telescopic rod 48 to retract.

[0064] When the extension rod 60 slides from the initial section 61 to the first mixing section 62, the movable end of the electric telescopic rod 48 contracts, the lifting rod 23 descends, driving the mixing assembly 18 to descend, and the first wedge block 26 descends to the bottom of the first ring 34. The supporting plate 13 rotates with the rotating base 9, while the mixing assembly 18 does not rotate. Therefore, the mixing assembly 18 can mix the soil sample to be tested on the supporting plate 13.

[0065] When the extension rod 60 slides from the first mixing section 62 to the first discharging section 63, the lifting rod 23 rises, driving the mixing assembly 18 and multiple first baffles 11 to rise. The mixing assembly 18 no longer contacts the soil sample to be tested. The first baffle 11 opens the first baffle 15 through the first through groove 14. Through the multiple first baffles 11 set, the soil sample on the supporting plate 13 can be divided into four equal parts. At the same time, the first baffle 11 rises, driving the first discharge pipe 32 to rise, and allowing the first discharge pipe 32 to pass through the membrane petal 31, wherein one-fourth of the soil sample can flow downward through the inside of the first discharge pipe 32, thereby realizing the quartering sampling of the soil sample to be tested.

[0066] When the extension rod 60 slides from the first discharge section 63 to the second mixing section 64 , the lifting rod 23 descends, driving the mixing assembly 18 to descend, and the first wedge block 26 descends to below the second ring 35 . The mixing assembly 18 mixes the remaining soil sample to be tested on the supporting plate 13 .

[0067] When the extension rod 60 slides from the second mixing section 64 to the second discharging section 65, the lifting rod 23 rises and first drives the multiple second baffles 12 to rise, and the multiple second baffles 12 then drive the multiple first baffles 11 to rise. At the same time, the lifting rod 23 drives the mixing assembly 18 to rise. Finally, the multiple second baffles 12 open the second baffle 17 through the second through slot 16, and the multiple first baffles 11 open the first baffle 15 through the first through slot 14, which can divide the remaining soil samples on the supporting plate 13 into multiple areas, and the number of discharge ports 30 in the multiple areas is determined according to the size of each area, thereby improving the uniformity of soil sampling. At the same time, the second baffle 12 rises and drives the second discharge pipe 33 to rise, and the second discharge pipe 33 passes through the membrane petal 31. The first baffle 11 rises and drives the first discharge pipe 32 to rise, and the first discharge pipe 32 passes through the membrane petal 31. The soil samples to be tested in multiple areas can flow downward through the first discharge pipe 32 or the second discharge pipe 33, realizing a multi-point sampling method for the remaining soil samples to be tested.

[0068] When the extension rod 60 slides from the second discharging section 65 to the separation section 66, the arc plate 53 contacts the second wedge block 27, and the arc plate 53 can squeeze the two second wedge blocks 27, and then squeeze the two second wedge blocks 27 into the interior of the lifting rod 23. Under the action of the connecting plate 28, the two first wedge blocks 26 can be driven into the interior of the lifting rod 23. At this time, the first wedge block 26 no longer blocks the first ring 34 or the second ring 35, and the first clapboard 11 or the second clapboard 12 can automatically drop and reset under the action of gravity.

[0069] When the extension rod 60 slides from the separation section 66 to the reset section 67, the movable end of the electric telescopic rod 48 extends, which can drive the extension rod 60 back to the initial section 61. During this process, since the mixing assembly 18 is not in contact with the carrying plate 13, the staff can stop the drive motor 57, remove the carrying plate 13 from the rotating seat 9, and replace the carrying plate 13 and the soil sample to be tested.

[0070] A plurality of sampling dishes are placed below the first discharge pipe 32 and the second discharge pipe 33. The sampling dishes are moved by the transfer mechanism 5. The plurality of sampling dishes are respectively used to load the soil to be tested sampled by the quartering method or the samples to be tested sampled by the multi-point sampling method. In addition, the device can be used in conjunction with the cleaning mechanism 2, the drying mechanism 3, the first screening mechanism 4, the transfer mechanism 5, the crushing mechanism 6, the second screening mechanism 7 and the cleaning mechanism 8, and can also be used alone in the laboratory, which further improves the convenience of use of the device.

[0071] The slide plate 47 is detachably mounted on the movable end of the electric telescopic rod 48 by means of bolts or buckles. Thus, the staff can disassemble the slide plate 47 and then press the extension rod 60 into the interior of the insertion rod 50 to remove the slide plate 47 from the interior of the slide rail 46. Then, a new slide plate 47 can be replaced, thereby changing the relevant parameters of the device during use, further improving the convenience of using the device.

[0072] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An automatic preparation device for a soil sample to be tested, comprising a body (1), a cleaning mechanism (2) arranged inside the body (1) for removing impurities in the soil sample, a drying mechanism (3) arranged inside the body (1) for drying the soil sample, a first screening mechanism (4) arranged inside the body (1) for screening the soil sample, a transport mechanism (5) arranged inside the body (1) for transporting the soil sample, a crushing mechanism (6) arranged inside the body (1) for crushing the soil sample, a second screening mechanism (7) arranged inside the body (1) for screening the soil sample, and a cleaning mechanism (8) arranged inside the body (1) for cleaning a sample bottle, characterized in that: The body (1) is provided with a rotating seat (9) inside, the inner wall of the rotating seat (9) is provided with a mounting cylinder (10), the inside of the mounting cylinder (10) is provided with a first baffle (11), the inside of the mounting cylinder (10) is provided with a second baffle (12), the top of the rotating seat (9) is provided with a carrying plate (13), and in the vertical section of the carrying plate (13), the top surface of the carrying plate (13) is recessed toward the center, the top surface of the carrying plate (13) is provided with a first through-slot (14) for the first baffle (11) to pass through, the inner wall of the first through-slot (14) is elastically provided with a first baffle (15), the top surface of the carrying plate (13) is provided with a second through-slot (16) for the second baffle (12) to pass through, the inner wall of the second through-slot (16) is elastically provided with a second baffle (17), and the outer wall of the first baffle (11) is provided with a slot (42) for the second baffle (12) to be inserted; A discharge port (30) is provided on the top surface of the carrier plate (13), a membrane flap (31) is provided on the inner wall of the discharge port (30), a first discharge pipe (32) for passing through the membrane flap (31) is provided on the outer wall of the first baffle (11), and a second discharge pipe (33) for passing through the membrane flap (31) is provided on the outer wall of the second baffle (12); A mixing assembly (18) is provided on the top of the carrying plate (13), and a lifting assembly (22) is provided on the mixing assembly (18).

2. The automatic soil sample preparation device according to claim 1, characterized in that: The mixing assembly (18) comprises a sleeve (19) arranged on the top of the carrier plate (13), a stirring rod (20) arranged on the wall of the sleeve (19), a through hole opened on the top surface of the carrier plate (13) for the sleeve (19) to slide, and a limiting ring (21) arranged on the top surface of the carrier plate (13).

3. The automatic soil sample preparation device according to claim 2, characterized in that: The lifting assembly (22) includes a lifting rod (23) disposed inside the sleeve (19), a guide block (24) disposed on the inner wall of the sleeve (19), and a guide groove (25) provided on the rod wall of the lifting rod (23) for the guide block (24) to slide.

4. The automatic soil sample preparation device according to claim 3, characterized in that: The lifting assembly (22) further includes a first circular ring (34) provided on the outer wall of the first baffle (11), a second support plate (41) provided on the outer wall of the first baffle (11), a first support plate (36) provided on the outer wall of the second baffle (12), and a second circular ring (35) provided on the inner wall of the first support plate (36), and the outer wall of the second discharge pipe (33) is fixedly connected to the outer wall of the first support plate (36), the outer wall of the first discharge pipe (32) is fixedly connected to the outer wall of the second support plate (41), and the outer wall of the first discharge pipe (32) is slidably connected to the outer wall of the first support plate (36); The lifting assembly (22) further includes a first wedge (26) disposed inside the lifting rod (23), a second wedge (27) disposed inside the lifting rod (23), and a connecting plate (28) disposed inside the lifting rod (23), wherein the outer wall of the connecting plate (28) is fixedly connected to the outer wall of the second wedge (27), and the outer wall of the connecting plate (28) is fixedly connected to the outer wall of the first wedge (26), and two of each of the first wedge (26), the second wedge (27), and the connecting plate (28) are provided; The lifting assembly (22) further includes a first elastic member (29) disposed between the two connecting plates (28).

5. The automatic soil sample preparation device according to claim 4, characterized in that: The side wall of the second baffle (17) is provided with a first clamping plate (39), and the top surface of the carrier plate (13) is provided with a first groove for blocking the first clamping plate (39). The side wall of the first baffle (15) is provided with a second clamping plate (40), and the top surface of the carrier plate (13) is provided with a second groove for blocking the first baffle (15).

6. The automatic soil sample preparation device according to claim 1, characterized in that: A positioning block (44) is provided on the bottom surface of the carrier plate (13), and a positioning groove (43) is provided on the top surface of the rotating seat (9).

7. The automatic soil sample preparation device according to claim 1, characterized in that: The inner wall of the installation cylinder (10) is provided with a first limiting plate (37), and the first baffle (11) slides inside the first limiting plate (37); the inner wall of the installation cylinder (10) is provided with a second limiting plate (38), and the second baffle (12) slides inside the second limiting plate (38).

8. The automatic soil sample preparation device according to claim 4, characterized in that: The inner wall of the body (1) is provided with an L-shaped plate (45), the outer wall of the L-shaped plate (45) is provided with a fixed seat (55), the outer wall of the fixed seat (55) is rotatably connected to the outer wall of the rotating seat (9), the outer wall of the L-shaped plate (45) is provided with a slide rail (46), the interior of the slide rail (46) is provided with a slide plate (47), the outer wall of the L-shaped plate (45) is provided with an electric telescopic rod (48), and the movable end of the electric telescopic rod (48) is fixedly connected to the side wall of the slide plate (47), the rod wall of the lifting rod (23) is provided with a fixed cylinder (49), the outer wall of the fixed cylinder (49) is provided with a fixed end. The wall is provided with an insertion rod (50), and an extension rod (60) is elastically installed at one end of the insertion rod (50) away from the fixed cylinder (49), and the end of the extension rod (60) away from the insertion rod (50) is inserted into the interior of the slide plate (47). The outer wall of the fixed cylinder (49) is provided with a T-shaped plate (51), and the outer wall of the L-shaped plate (45) is provided with a guide frame (52), and the T-shaped plate (51) slides inside the guide frame (52). The outer wall of the guide frame (52) is provided with an arc plate (53), and the top surface of the fixed cylinder (49) is provided with an arc groove (54) for the arc plate (53) to pass through.

9. The automatic soil sample preparation device according to claim 8, characterized in that: The outer wall of the L-shaped plate (45) is provided with a mounting plate (56), the top surface of the mounting plate (56) is provided with a driving motor (57), the axial end of the driving motor (57) is provided with a second gear (59), the outer wall of the mounting cylinder (10) is provided with a first gear (58), and the outer wall of the second gear (59) is meshed with the outer wall of the first gear (58).

10. The automatic soil sample preparation device according to claim 9, characterized in that: The slide plate (47) includes an initial section (61), a first mixing section (62), a first discharging section (63), a second mixing section (64), a second discharging section (65), a separation section (66), and a reset section (67).

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