Soil sample grinding and screening device and method

Abstract

The present application provides a soil sample grinding and screening device, including a base; a mounting frame installed on one side of the base; a grinding unit, a first screening unit, a second screening unit, at least four sample bottles installed on the mounting frame, and an operating track parallel to the mounting frame installed on the other side of the base; a manipulator matching the operating track, a moving track arranged on the base and parallel to the mounting frame, the moving track being located between the operating track and the mounting frame; a moving seat matching the moving track, the moving seat being provided with a limiting groove for placing the four sample bottles; the travel of the moving seat being able to reach at least below the first screening unit. The screening and grinding of soil samples can be realized through an integrated set of equipment, and the same soil sample can be processed in a continuous manner to obtain soil samples of three mesh sizes. A soil sample grinding and screening method based on the above-mentioned equipment is also provided.

Description

Technical Field

[0001] The present application relates to the collection and processing of soil samples, and in particular to a soil sample grinding and screening device and method. Background Art

[0002] Whether it is the control of living environment pollution or the maintenance and management of the crop growing environment, it is necessary to collect and analyze the soil in various places.

[0003] After the soil is collected, it needs to be processed in some way before the relevant analysis can be carried out. After the soil samples are registered and numbered, they need to go through a preparation process: air drying, grinding, sieving, mixing and bottling, in preparation for various measurements. For example, soil heavy metals generally use dried samples, and the analysis of semi-volatile persistent organic pollutants generally uses freeze-dried samples; the determination of volatile organic pollutants generally uses fresh samples. Fresh samples can be temporarily stored in a refrigerator or freezer, but they must be extracted and processed within 10 days.

[0004] The traditional practice is to bottle the soil after pre-treatment in the laboratory or testing agency. Each laboratory or testing agency must be equipped with personnel and equipment for soil sample processing, which is suitable for a small number of soil testing tasks, but it is time-consuming and labor-intensive when large-scale testing is required. An ideal method is to set up special automated processing equipment to process the collected soil in batches as automatically as possible, so that soil samples can be processed in batches quickly and efficiently to meet the testing requirements. In addition, this special equipment can also be used in this way. A special location is set up in an area to configure the processing equipment, and then the existing soil sample processing needs in the area are concentrated together for processing, and then distributed and transported in a centralized manner. In this way, the work pressure of each testing agency and laboratory can be relieved, and more energy can be placed on the detection and analysis of soil samples. Obviously, this type of work requires higher professionalism and knowledge level of personnel. This processing method is more reasonable from the perspective of macro resource allocation.

[0005] Centralized soil sample processing requires a large amount of land to store and place soil samples for each processing step and install various specialized automated equipment. Due to the current limited industrial land, efforts are made to maximize the use of space. In order to save equipment space, it is hoped that the integration of equipment can be improved. At present, in the process of soil sample processing, after grinding, the grinding tank must be transferred to the next device for screening. This is certainly suitable for batch processing and has high efficiency. However, in actual application, grinding equipment and screening equipment must be arranged separately, and if different mesh sizes are to be retained for the same batch of soil samples, more complicated operations are required. In the middle, soil samples also need to be transferred and transported, which increases the requirements for space occupancy. Summary of the invention

[0006] The present application provides a soil sample grinding and screening device, which can complete the processing of a batch of soil samples in one integrated device, and through one continuous operation, soil samples of three particle sizes can be obtained on one device, which is very suitable for application scenarios where a small batch of soil samples needs to be sampled with multiple particle sizes. It also makes reasonable use of space and has a high degree of equipment integration, so as to solve at least one of the above technical problems.

[0007] To achieve the above purpose, the technical solution adopted by this application is

[0008] A soil sample grinding and screening device, comprising

[0009] Pedestal;

[0010] A mounting frame mounted on one side of the base;

[0011] A grinding unit mounted on the mounting frame, the grinding unit comprising two grinding tools;

[0012] A grinding jar, wherein the grinding jar has grinding chambers corresponding to the two grinding tools respectively;

[0013] A first screening unit installed on the mounting frame, the first screening unit comprising

[0014] The first screen corresponding to the grinding jar,

[0015] A first screening funnel corresponding to the first screen, the first screening funnel comprising four funnel bodies,

[0016] Disposing drop valves corresponding to the four funnel bodies respectively below the first screening funnel;

[0017] A second screening unit installed on the mounting frame, the second screening unit comprising

[0018] A second screen corresponding to the grinding jar, wherein the second screen includes two independent screening channels corresponding to the two grinding chambers respectively;

[0019] a second screening funnel corresponding to the second screen, the second screening funnel comprising two funnel bodies corresponding to two screening channels respectively;

[0020] At least four sample bottles;

[0021] An operating rail mounted on the other side of the base and parallel to the mounting frame;

[0022] A manipulator matched with the operating track, the manipulator being capable of grabbing the grinding jar and / or the sample bottle;

[0023] A movable track provided on the base and parallel to the mounting frame, wherein the movable track is located between the operating track and the mounting frame;

[0024] A moving seat matched with the moving track is provided with limiting grooves for placing the four sample bottles; the travel of the moving seat can at least reach below the first screening unit.

[0025] Through reasonable layout, three functional systems are provided on the base. System 1 includes a grinding unit, which can be used with a grinding tank with a special double grinding chamber to grind the soil sample to one particle size requirement or two particle size requirements. It includes two screening units, which can perform two screenings, that is, to achieve screening and separation of soil samples, wherein the second screening unit can also achieve screening of two particle size requirements to obtain soil samples of two mesh sizes.

[0026] System 2 includes an operating track and a robot, which can complete the placement and transfer of grinding jars and sample bottles.

[0027] System three includes a moving track and a moving seat for placing grinding jars and sample bottles. The sample bottles can also be moved to the bottom of the first screening unit to realize the bottling operation after the first screening unit completes the screening operation.

[0028] The layout of the functional systems of the equipment is neat and compact, which can support the overall arrangement of the equipment in a square space to save space. At the same time, the equipment itself can also be used as a module to form a soil sample processing line with other soil sample equipment. According to the specifications and transportation restrictions, the degree of composition can be selected. Most of the structures can be pre-assembled in the production factory, simplifying the on-site installation and construction work.

[0029] In addition, it provides multiple functions of automation and multiple application scenarios. The grinding unit can grind various particle sizes by adjusting the grinding speed and grinding time of the grinding tool. The two screening units can achieve multi-level grinding and screening on one device, and pack in real time. When combined with the replacement and adjustment of the screen, more improvements can be achieved. The device itself can achieve multiple functions and can also serve as a basic structure that supports multiple improvements and expansions.

[0030] In a preferred implementation, the grinding jar comprises

[0031] Base plate;

[0032] a top opening opposite to the bottom plate;

[0033] A side wall of equal height extending between the edge of the bottom plate and the edge of the top opening, the side wall and the bottom plate together define a grinding chamber, and the grinding chamber is connected to the outside through the top opening;

[0034] A partition wall is disposed in the grinding jar, the partition wall is connected to the inner wall of the side wall, the number of the grinding chambers is two, and the partition wall is located between the two grinding chambers;

[0035] The bottom plate, the side wall and the partition wall are an integrally formed structure.

[0036] The grinding jar has two grinding chambers, which is the core configuration of the equipment that can meet various work needs. Its structural design takes many factors into consideration. The grinding jar is used as a container for grinding and crushing soil samples. When grinding soil samples, a certain amount of soil samples will be loaded, and then the grinding equipment will be inserted into the grinding jar for grinding and crushing. The design of two cavities can be used as a basic design for simultaneous grinding of multiple cavities. The two grinding chambers are respectively loaded with soil samples and then ground at the same time, which is more efficient than grinding in separate jars. At the same time, it is a connected structure, and the overall design is more compact and space-saving. In terms of operation, the "two jars" of soil samples can be taken and placed in one step.

[0037] In addition, the structure of this grinding tank is also flexible and adaptable. For example, different batches of soil samples can be placed in the two grinding chambers of the tank body and then ground with the same parameters. Alternatively, the same batch of soil samples can be placed in two tank bodies and ground with two grinding tools with different parameters to obtain soil samples of different particle sizes, and the operation is also performed synchronously.

[0038] Another advantage of this design is that in the connected grinding jar, the grinding and crushing performed in the two grinding chambers will not collide with the inner wall of the grinding jar, thereby causing vibration. This vibration is beneficial to improving the efficiency of the grinding of soil samples inside the two jars at the same time.

[0039] In a preferred implementation, the first screen has a screening cavity; the upper end of the screening cavity corresponds to the two grinding cavities at the same time; the lower end of the screening cavity corresponds to the top openings of the four funnel bodies of the first screening funnel at the same time;

[0040] The second screen has two sub-screening cavities, and the upper ends of the two sub-screening cavities correspond to the two grinding cavities respectively; the lower ends of the two sub-screening cavities correspond to the top openings of the two funnel bodies of the second screening funnel respectively.

[0041] The structure of the screen mesh and the grinding jar with two grinding chambers can realize multi-stage screening. When the grinding jar is matched with the first screen mesh, the soil sample in the grinding jar will be evenly screened and separated and then enter the first screening funnel and be divided into four parts. When the grinding jar is matched with the second screen mesh, the soil sample in the grinding jar will be respectively loaded into the two funnel bodies of the second screening funnel. That is to say, when the first screening unit performs screening, the soil sample in the grinding jar can be ground with the same grinding parameters and then screened and evenly divided. When the second screening unit performs screening, different grinding parameters can be used in the two grinding chambers of the grinding jar to obtain soil samples with different crushing degrees, and then they are screened on screens with different mesh sizes. The soil samples in the two grinding chambers are screened through independent channels in the second screening unit and enter the funnel.

[0042] The device provides the possibility of grinding and screening soil samples with three mesh sizes. The operation can be set based on the equipment. For example, a coarser mesh size is first screened in the first screening unit. Half of the soil sample is bottled for retention, and the other half is refluxed or loaded into a grinding jar through a funnel. Then a second grinding is performed to grind to two finer particle sizes, and then the second screening unit is used for a second screening to obtain soil samples with two mesh sizes. In this way, soil samples with three mesh sizes can be obtained. Such a functional configuration can also cooperate with the layout of each unit of the equipment itself. The grinding unit, the first screening unit, and the second screening unit can be arranged in sequence. The soil sample can be loaded into the grinding jar from one end and then collected and bottled at the other end.

[0043] Another more important advantage is that the above scheme is suitable for continuous processing of soil samples. Some existing equipment is also integrated, but when screening with multiple mesh sizes is to be achieved, it is mostly achieved by replacing the screen. For continuous operation, there is no need to frequently replace the screen, which is also a significant advantage of this scheme.

[0044] In a preferred implementation, the capacity of the grinding jar is greater than the capacity of the sample bottle multiplied by the number of the sample bottles.

[0045] A reasonable configuration is to make the capacity of the grinding jar larger than the overall capacity of the sample bottle, for example, the capacity of the grinding jar is 1.1 to 1.3 times the overall capacity of the sample bottle. This is to consider that the sample bottle can be filled up later after the material is loaded into the grinding jar once.

[0046] In a preferred implementation, the grinding unit, the first screening unit and the second screening unit are all mounted on the mounting frame via a rotating structure; and the rotation axis of the rotating structure is perpendicular to the central axis of the grinding jar when it is placed on the grinding unit, the first screening unit and the second screening unit.

[0047] The rotating structure can facilitate the installation of the grinding jar. After the grinding jar is installed with the opening facing upward, it can be turned upside down to complete the grinding or screening operation. At the same time, the rotating structure itself can also help improve the effect of grinding and screening. For example, during the grinding or screening process, it can swing to make the soil sample jump or vibrate more.

[0048] In a preferred implementation, the first screening unit further comprises an annular clamp installed on the outside of the first screen, and a pair of vibration mounting plates are provided on the outside of the annular clamp; each of the pair of vibration mounting plates is installed with a pair of the vibration excitation components.

[0049] The vibration screen assembly is directly installed on the outside of the screen, and the vibration is directly transmitted to the screen, which makes the screening more efficient. In one scenario, combined with the previous solution, if part of the soil sample that has been screened needs to be screened again, but has been screened and leaked into the screening funnel, the soil sample can be refluxed and returned to the grinding tank by inverting the device. This is also a compact and smooth operation. Applying vibration directly to the screen is conducive to achieving this operation.

[0050] In a preferred implementation, the first screen has a screening mesh number of 10 meshes; the screening mesh numbers of the two sub-screening cavities of the second screen are 60 meshes and 100 meshes respectively.

[0051] As a more reasonable solution, the particle size requirement for a grinding and screening can be set to 10 meshes. After the first screening, part of the soil sample can be extracted and bottled, and then the second screening and grinding can be continued. Since the first screening has been performed, the time for the second screening will be shortened, and the grinding and screening process will be smoother. In addition, the two finer particle size requirements are also relatively close. The grinding speed can be adjusted to complete the grinding in the two grinding chambers in a similar time, and the subsequent screening work can be directly completed with the corresponding screen.

[0052] In a preferred implementation, the screening cavity of the first screen is in the shape of an oblong hole; the two sub-screening cavities of the second screen are in the shape of two equal circular holes; the width of the oblong hole is equal to the diameter of the circular hole; the distance between the centers of the two circular holes is equal to the length of the long side of the oblong hole;

[0053] The soil sample grinding and screening equipment also includes a cleaning robot matched with the operating track, the cleaning robot includes a seat body capable of linearly moving along the operating track, a lifting frame arranged on the seat body, a lifting platform matched with the lifting frame and capable of lifting and lowering along the lifting frame, and a pair of cleaning brushes arranged on the lifting platform. The pair of rotatable cleaning brushes have a rotation axis in the vertical direction, and a cleaning radius of the cleaning brush is equal to the radius of the circular hole.

[0054] The advantage of the above scheme is that the shape and structure of the two screens are further optimized, mainly considering the convenience of cleaning the screens. When the screens are opened, the cleaning brush of the cleaning robot can be used to clean them directly without removing the screens. Because the shapes of the two screens are actually roughly the same, it is determined that one cleaning brush can be used to continuously clean the two screens without replacing the screens. This simplifies the cleaning work of the screens and shortens the cleaning time of the screens.

[0055] In a preferred implementation, the lifting frame is provided with a lead screw, and the lifting platform is provided with a nut matching the lead screw, and lifting and lowering are achieved through a lead screw and nut mechanism formed by the lead screw and the nut.

[0056] The lifting and lowering of the cleaning brush is achieved more smoothly by using a lead screw nut. Because the cleaning brush needs to be driven to rotate during the cleaning process, the lead screw nut is also more able to resist such working impact.

[0057] The technical solution adopted by the present application can also be a soil sample grinding and screening method implemented by using the soil sample grinding and screening equipment as described above, including:

[0058] The grinding jar is mounted on the grinding unit to perform a grinding operation, wherein the two grinding tools grind at least part of the soil samples in the two grinding chambers to a first particle size;

[0059] Transferring the grinding jar to the first screening unit; performing a screening operation, and placing the soil sample meeting the first particle size requirement into a sample bottle;

[0060] The grinding jar is transferred to the grinding unit for secondary grinding, and the two grinding apparatuses grind the soil samples in the two grinding chambers to the second particle size and the third particle size respectively;

[0061] The grinding jar is transferred to the second screening unit for secondary screening, and the soil sample meeting the second particle size requirement and the soil sample meeting the third particle size requirement are respectively put into different sample bottles.

[0062] As mentioned above, the grinding and screening of soil samples with three particle size requirements can be completed in one operation through the aforementioned equipment, and the samples can be directly loaded into sample bottles, that is, one soil sample can be put into the soil bottle, that is, three kinds of soil samples with different mesh sizes can be directly obtained, and the process arrangement is reasonable and coherent, which saves processing time. A coarser mesh soil sample can be directly obtained and bottled after a screening, and then the soil sample that has been ground once is ground twice, which shortens the grinding time. At the same time, it is more friendly to the equipment for fine-mesh grinding and can extend the service life of the equipment. Then, two soil samples with finer mesh sizes can be obtained at the same time through a secondary screening. This method has not been adopted or disclosed before. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0064] Figure 1 A soil sample grinding jar structure in one embodiment is depicted;

[0065] Figure 2 The soil sample grinding jar structure in another perspective of one embodiment is depicted;

[0066] Figure 3 The structure of the soil sample grinding jar in another perspective in one embodiment is depicted;

[0067] Figure 4 A cross-sectional structure of a soil sample grinding jar in one embodiment is depicted;

[0068] Figure 5 A schematic structural diagram of a soil sample grinding device in one embodiment is depicted;

[0069] Figure 6 A schematic diagram of the structure of a soil sample grinding device in another perspective of an embodiment is depicted;

[0070] Figure 7 A schematic structural diagram of a soil sample screening device in one embodiment is depicted;

[0071] Figure 8 A schematic diagram of the structure of a soil sample screening device in another perspective of an embodiment is depicted;

[0072] Fig. 9 A schematic structural diagram of a soil sample screening device in another perspective in an embodiment is depicted;

[0073] Figures 10 to 12 The structure of a screen at various angles is shown. Fig.13 for Fig.12 Schematic diagram of the AA section;

[0074] Figures 14 to 17 The schematic diagram of the combination of the variable diameter channel and the screening funnel in the soil sample screening device at various angles is drawn;

[0075] Fig.18 A schematic structural diagram of a soil sample screening device in another embodiment is depicted;

[0076] Fig.19 A schematic structural diagram of a soil sample screening device in another embodiment from another perspective is depicted;

[0077] Fig. 20 A schematic structural diagram of a soil sample screening device in another perspective in an embodiment is depicted;

[0078] Figure 21 to Figure 23 The structure of another screen at various angles is shown. Fig.24 for Fig.23 Schematic diagram of the AA section;

[0079] Fig.25 A schematic diagram of the overall structure of a soil sample grinding and screening device in one embodiment is depicted;

[0080] Fig.26 A schematic diagram of the overall structure of a soil sample grinding and screening device from another perspective in one embodiment is depicted;

[0081] Fig. 27 A schematic diagram of the structure of a moving seat in a soil sample grinding and screening device in one embodiment is depicted;

[0082] Fig.28 A schematic diagram of the structure of a base and a mounting frame in a soil sample grinding and screening device in one embodiment is depicted;

[0083] Fig.29 A schematic diagram of the structure of a manipulator in a soil sample grinding and screening device in one embodiment is depicted;

[0084] Fig.30 A schematic diagram of the structure of a cleaning manipulator in a soil sample grinding and screening device in one embodiment is depicted;

[0085] Fig.31 A schematic structural diagram of another manipulator in a soil sample grinding and screening device in one embodiment is shown. DETAILED DESCRIPTION

[0086] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0087] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific implementation methods disclosed below.

[0088] In the description of the present application, it should be understood that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application 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 a limitation on the present application. In the present application, unless otherwise clearly specified and limited, a first feature being "upper" or "lower" than a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium.

[0089] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected entities are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0090] In this application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0091] Combination Figures 1 to 4 , depicts a soil sample grinding jar, comprising a bottom plate A110; a top opening A120 opposite to the bottom plate A110; a side wall A130 of equal height extending between the edge of the bottom plate A110 and the edge of the top opening A120, the side wall A130 and the bottom plate A110 jointly defining a grinding chamber A140, the grinding chamber A140 being connected to the outside through the top opening A120;

[0092] A partition wall A150 is disposed in the grinding chamber A140, and the partition wall A150 is connected to the inner wall of the side wall A130. As shown in the figure, the partition wall A150 divides the grinding chamber A140 into two equal independent cavities, and the partition wall A150 divides the top opening A120 into two equal independent openings;

[0093] The bottom plate A110, the side wall A130 and the partition wall A150 are an integrally formed structure.

[0094] The grinding jar is a container for grinding and crushing soil samples. When grinding soil samples, a certain amount of soil samples will be loaded, and then the grinding equipment will be inserted into the grinding jar for grinding and crushing. The design of two cavities can be used as a basic design for simultaneous grinding of multiple cavities. The two cavities are respectively loaded with soil samples and then ground at the same time, which is more efficient than grinding in separate jars. At the same time, it is a connected structure, and the overall design is more compact and space-saving. In terms of operation, the "two jars" of soil samples can be taken and placed in one step.

[0095] In addition, the structure of this grinding jar is also flexible and adaptable. For example, different batches of soil samples can be placed in the two cavities of the jar and then ground with the same parameters. Alternatively, the same batch of soil samples can be placed in two jars and ground with two grinding tools with different parameters to obtain soil samples of different particle sizes, and the operation is also performed synchronously.

[0096] Another advantage of this design is that in the connected grinding jar, the grinding and crushing in the two cavities will not collide with the inner wall of the grinding jar, thereby causing vibration. This vibration is beneficial to improve the efficiency of grinding soil samples inside the two jars at the same time.

[0097] Usually, the material of the soil sample grinding jar can be selected as silicon carbide, which is formed by a molding process. Considering the application scenarios of the grinding jar, the use of silicon carbide material can give the grinding jar high wear resistance. At the same time, the molding process of silicon carbide is also conducive to rapid batch manufacturing. Suitable silicon carbide particles or powders are selected, and then a high-temperature sintering process is used by molding to prepare suitable grinding jar products. At the same time, silicon carbide materials have the advantages of being lightweight in addition to being wear-resistant and strong.

[0098] In some application scenarios, the material of the soil sample grinding jar can also be selected as a metal material as a substitute for silicon carbide material, mainly wear-resistant metal materials such as stainless steel, high manganese steel or various types of wear-resistant cast iron.

[0099] refer to Figure 1 and Figure 3 The shape of the bottom plate A110 is an 8-shape. The bottom plate A110 is a symmetrical structure, having a long symmetry plane and a short symmetry plane passing through the center of the bottom plate, and the partition wall is located at the short symmetry plane.

[0100] The connected grinding jar is made into a symmetrical structure, which can avoid mis-installation when the same batch of soil samples are processed in batches with the grinding device. Correspondingly, the soil sample grinding device is also equipped with the same structure for installing the grinding jar and the same grinding tool, so that the installation direction of the grinding jar does not need to be paid attention to when taking and placing the grinding jar. It can be understood that two identical cylindrical grinding jars are made into a connected shape to form an integrated structure.

[0101] Combination Figure 2 The shape of the independent cavity A140 is cylindrical. The cylindrical independent cavity is used as a grinding space, which is suitable for grinding equipment that works in a rotary manner. After the grinding is completed, there is less residual powder when the soil sample is transferred. Due to the connected structural design, the inner walls of the two independent cavities can be hit by the soil sample and the vibration can be transferred to each other. The inner wall of the cavity can also be set to be relatively smooth. In order to improve the efficiency of grinding, the current grinding and crushing structure will consider setting internal ribs on the inner wall of the grinding chamber, or setting the grinding chamber to a polygon to increase the impact. In this solution, it can be considered to avoid this operation to facilitate the transfer of soil samples and the cleaning of the inside of the grinding tank.

[0102] In addition, in some embodiments, Figure 4 As shown, a circular arc transition portion A1401 is formed at the connection between the inner side of the side wall A130 and the bottom plate A110. The circular arc transition portion is arranged at the above position, i.e., at the bottom of the independent cavity, which is also conducive to the transfer of soil samples and the cleaning of the inside of the grinding tank. That is, a circular arc transition structure is formed at the bottom of the two independent cavities.

[0103] Furthermore, in some embodiments, Figure 3 and Figure 4 As shown, symmetrically arranged grooves A1402 are formed on the outer side of the side wall A140.

[0104] Symmetrical grooves are arranged on the outer wall of the grinding jar to facilitate taking and placing, especially to facilitate taking and placing and sorting by automated machinery such as a robot. Since the outer wall of the grinding jar is also a relatively smooth arc shape, the grooves are arranged to increase the pressure area when holding and taking. At the same time, the grasping robot can also be extended into the groove, which is limited to ensure stable holding.

[0105] Use the soil sample grinding jar obtained above and add Figure 5 and Figure 6 In the illustrated embodiment, a soil sample grinding device is disclosed. In order to clearly show the structure of the device, Figure 6 The grinding jar is omitted. The device includes a vertical plate A200 having a front plate surface and a back plate surface opposite to the front plate surface;

[0106] The rotating unit A300 is arranged on the back panel surface, and the axis of the rotating shaft of the rotating unit A300 is perpendicular to the vertical board A200 and is connected to the vertical board A200; that is, the rotating unit A300 is supported by the frame (not shown in the figure), which can drive the vertical board to rotate and drive other structures arranged on the vertical board at the same time.

[0107] Track A400 set on the front panel;

[0108] Soil sample grinding jar A100 as before;

[0109] A fixing seat A500 is arranged on the front panel, and a grinding jar limiting groove A510 is formed on the fixing seat A500. The shape of the grinding jar limiting groove A510 matches the shape of the bottom of the soil sample grinding jar A100; the soil sample grinding jar A100 can be embedded in the grinding jar limiting groove A510; Figure 5 and Figure 6 , that is, it can be clearly understood how the soil sample grinding jar is loaded into the grinding jar limiting groove.

[0110] The movable seat A600 matches the track A400. The movable seat A600 is aligned or roughly aligned with the fixed seat A500 in the extending direction of the track A400. The movable seat A600 includes a movable seat body A610.

[0111] A pair of grinding units A620 disposed on the movable base A610, including a driving unit A6201 and a grinding tool A6202 connected to an output shaft of the driving unit A6201;

[0112] A sealing unit A6203 disposed on the movable seat A610;

[0113] The telescopic mechanism A6204 is installed on the front panel, and the two ends of the telescopic mechanism A6204 are respectively connected to the vertical plate A200 and the movable seat A610;

[0114] As described above, the movable seat can be pulled by the telescopic mechanism to bring the grinding unit closer to or away from the fixed seat, or the grinding jar placed on the fixed seat.

[0115] A pair of grinding units A620 are positioned opposite to the two independent cavities of the soil sample grinding jar, and the sealing unit A6203 is positioned opposite to the top opening A120 of the soil sample grinding jar. When the movable seat abuts against the soil sample grinding jar placed on the fixed seat, a pair of grinding tools A6202 extend into the two independent cavities respectively, and the top opening A120 is sealed and closed by the sealing unit A6203.

[0116] As a grinding device specially suitable for the grinding jar with a unique one-piece structure, its working method is to load the grinding jar with an appropriate amount of soil sample, then the opening of the grinding jar is upward, the grinding jar limit groove on the fixed seat is also upward, the soil sample grinding jar is placed in the limit groove, and then the movable seat moves closer to the fixed seat until the grinding device is deeply inside the grinding jar and the grinding jar mouth is sealed by the sealing unit. Then the vertical plate is rotated to reverse the direction of the grinding jar. At this time, the material in the soil sample will flow to the opening of the grinding jar and can fully contact the grinding device. The grinding unit is running, and the grinding device grinds the soil sample. The ground soil sample is continuously lifted and dropped under the action of gravity and is continuously ground. At the same time, it also hits the inner wall of the grinding jar, causing a certain vibration, which improves the efficiency of grinding.

[0117] In some embodiments, the telescopic mechanism can be selected as a cylinder, the cylinder seat of the cylinder is installed on the front plate surface of the vertical plate, and the piston rod of the cylinder is connected to the movable seat body. The cylinder is an actuator commonly used in various processing and control equipment. The cylinder drives the grinding tool, which has fast action and can maintain a certain pressure to facilitate the sealing of the opening of the grinding jar.

[0118] In addition, in some application scenarios, the drive unit includes an independent speed regulation sub-unit.

[0119] The drive unit can independently adjust the speed or frequency, and can grind the same parameters in the two cavities of the grinding jar, or grind different parameters separately, for example, grinding the soil to 100 mesh in one grinding cavity and grinding the soil sample to 60 mesh in the other grinding cavity. For a soil sample grinding jar with multiple grinding cavities, it may be necessary to achieve two degrees of grinding and crushing of soil samples in two independent cavities of a jar.

[0120] In another embodiment, two structures of screening devices for soil sample grinding jars with matching double grinding chambers are provided, referring to Figures 7 to 9, discloses a soil sample screening device, including a vertical plate B110; a first mounting seat B120 fixedly mounted on the vertical plate B150; a vibration screen assembly B130 connected to the first mounting seat B120 via a shock absorbing unit B1301, including at least two screening funnels B1302, the lower end of the screening funnel B1302 passes through the first mounting seat B120, and a screen B1303, the lower end of the screen B1303 is connected to the top opening of the screening funnel B1302; a vibration excitation assembly B1304 connected to the screen B1303, the vibration excitation assembly B1304 can drive the screen B1303 to vibrate; fixedly mounted on the vertical plate B110; a vibration excitation assembly B1304 connected to the first mounting seat B12 ... The second mounting seat B140 of the vertical plate B110, the upper end of the screen B1303 is connected to the second mounting seat B140, the second mounting seat B140 is provided with a material flow port B1401, and the upper end of the screen B1303 is connected to the material flow port B1401; the mobile mounting seat B150 includes a track B1501 arranged on the vertical plate B110, a mobile seat B1502 matched with the track B1501, and the moving direction of the mobile seat B1502 is parallel to the axis of the screen B1303; the mobile seat B1502 is formed with a grinding jar limiting groove; its structure can refer to the structure of the grinding jar and the corresponding limiting groove described in the grinding device disclosed in the aforementioned embodiment. That is, the grinding jar B160 has two grinding chambers, and when the grinding jar B160 is placed in the grinding jar limiting groove, the two grinding chambers correspond to the material flow port B1401.

[0121] The figure can clarify more settings and parameters of the device structure, including:

[0122] There are four screening funnels B1302, two material flow ports B1401, and the screen B1303 is connected to the two grinding chambers of the grinding jar B160 through the two material flow ports B1401 respectively.

[0123] The soil sample in the grinding tank enters the screen B1303 through the material flow port. In this embodiment, the reference Figures 10 to 13 , sieve B1303 has a single channel, which simultaneously receives soil samples from two grinding chambers of the grinding jar and then performs screening.

[0124] The vibrating screen assembly B130 also includes an annular clamp B1308 installed on the outside of the screen B1303, and a pair of vibration mounting plates B13081 are provided on the outside of the annular clamp B1308; the vibration excitation assembly B1304 is installed on the pair of vibration mounting plates B13081.

[0125] In addition, it also includes a variable diameter channel B1309 arranged between the four screening funnels B1302 and the screen B1303, that is, the screening funnel and the screen are connected through the variable diameter channel. Figures 14 to 17The interior of the variable diameter channel B1309 is evenly divided into four sub-channels by the internal partition, and the bottom openings of the four sub-channels will correspond to the top feeding ports of the four screening funnels respectively; four mounting ear plates are also arranged on the outside of the variable diameter channel B1309, and one end of the shock absorbing unit B1301 is connected to the outside of the variable diameter channel B1309 through the mounting ear plate, and the other end is connected to the first mounting plate B120.

[0126] It also includes four opening and closing discharge valves B180 arranged at the bottom discharge ports of the four screening funnels B1302. The discharge valves B180 can be opened and closed by an electric actuator (not shown) or a pneumatic actuator (not shown).

[0127] In addition, combined Figure 7 and Fig. 9 , and also includes a rotation drive component B170 whose rotation shaft is connected to the vertical plate B110, which can rotate by driving the vertical plate B110, and the axis of the rotation shaft is perpendicular to the vertical plate B110.

[0128] If a grinding jar with two grinding chambers is used, the grinding chambers may contain soil samples of the same specifications, for example, the soil samples in the two grinding chambers are ground to 10 mesh or 20 mesh, or they may contain soil samples of different specifications, for example, the soil sample in one grinding chamber is ground to 60 mesh, and the soil sample in the other grinding chamber is ground to 100 mesh. For these two situations, the above scheme can ensure that as a basic structure, it can support soil samples of the same particle size to enter the same screen through the material flow port, or enter different screens respectively; it can support soil samples of different particle sizes to enter different screens through the material flow port for screening. Therefore, a compatible equipment structure is provided. The following introduces at least two solutions that are formed based on the basic structure and different extended structures to adapt to different application scenarios.

[0129] Another configuration that can be expanded is to be equipped with four screening funnels, which supports the needs of multiple application scenarios. For example, the soil samples in the two grinding chambers are evenly loaded into four screening funnels, or the soil samples in the two grinding chambers are respectively loaded into two of the four screening funnels, and then the discharge of the funnel is controlled to decide whether to can it. One application scenario is that the particle size of the soil samples in the two grinding chambers is consistent, and then they are evenly loaded into four screening funnels. The discharge of the screening funnel is controlled so that only one or two are loaded into the sample bottle, and the other materials are loaded into other grinding jars for secondary grinding and screening. Since the first grinding has been carried out, the time for the second grinding will be shortened, and the soil samples of different particle sizes are also directly divided in the grinding and screening process. If the soil samples are divided as needed before grinding and crushing, on the one hand, multiple grinding and screening will be required, and there will be residues in the middle, and on the other hand, the operation time will be longer.

[0130] The vibration screen assembly is directly installed on the outside of the screen, and the vibration is directly transmitted to the screen, which makes the screening more efficient. In one scenario, combined with the previous solution, if part of the soil sample that has been screened needs to be screened again, but has been screened and leaked into the screening funnel, the soil sample can be refluxed and returned to the grinding tank by inverting the device. This is also a compact and smooth operation. Applying vibration directly to the screen is conducive to achieving this operation.

[0131] A variable diameter structure is provided to directly separate four sub-channels, which is beneficial to the equal distribution of soil samples and provides a connection structure suitable for installing a shock absorbing unit.

[0132] The filling amount of soil samples can be controlled by opening and closing the drop valve. The soil samples falling from the four funnels can be bottled separately at one time, or only part of them can be bottled and the rest can be bottled for the second time, or loaded into the grinding jar again for secondary grinding and screening.

[0133] The rotatable structure of the vertical plate is provided to facilitate the installation of the grinding jar. The grinding jar is initially installed on the movable seat with its opening upward, and then after being fixed in abutment, the vertical plate is inverted, so that the soil sample in the grinding jar can flow into the screen for screening and bottling. At the same time, the rotating structure can also realize such a function that after the soil sample is screened, only part of it is bottled, such as only two bottles, and then the vertical plate is inverted, and appropriate vibration is applied, so that the soil sample can flow back into the grinding jar again for other necessary processing.

[0134] Based on some common features with the screening device disclosed in the aforementioned embodiment, another embodiment discloses the structure of another screening device capable of simultaneously screening soil samples of two particle sizes. The differences are described below in conjunction with the accompanying drawings.

[0135] like Figures 18 to 20 As described, in this embodiment, the number of screening funnels B2302 is two, the number of material flow ports is two, and the screen B2303 is connected to the two grinding chambers of the grinding jar through the two material flow ports respectively.

[0136] It provides a method to put soil samples into the sieve for screening and then put them into two funnels, and then configure the sieve structure to decide whether to support the scenario of soil samples of one particle size to be screened and evenly enter the two funnels, or to support soil samples of two particle sizes to pass through sieves of different meshes and then enter the two funnels respectively. The following is an introduction to the latter configuration structure.

[0137] Combination Figure 21 to Figure 24 The screen B2303 has two screening cavities, and the upper ends of the two screening cavities correspond to the two grinding cavities respectively; the lower ends of the two screening cavities correspond to the top openings of the two screening funnels B2302 respectively.

[0138] Two screening chambers are configured, and the two screening chambers can use different mesh perforated plates to screen soil samples of different particle sizes. In this way, two soil samples of different particle sizes can be screened in one operation. Of course, as an extended parallel solution, the two screening chambers can also be configured with the same mesh perforated plates; it can also be set up in this way, that is, more than two screening chambers can perform the same or different mesh screening operations on soil samples. It can be seen that this solution provides a very flexible structure.

[0139] The installation method of the vibration excitation is also special. The vibration screen assembly also includes a screen mounting plate B2305, which is arranged between the lower end of the screen and the top opening of the screening funnel B2302;

[0140] The vibration excitation assembly B2304 and the screen mounting plate B2305 are connected to both sides of the screening funnel B2302;

[0141] One end of the shock absorbing unit B2301 is connected to the screen mounting plate B2305, and the other end is connected to the first mounting plate.

[0142] This solution is a further optimization of the previous solution. If soil samples of different particle sizes are suitable for immediate packaging after being screened through different sieves, they should be directly bottled after passing through the funnel. At this time, it is expected to minimize the residue in the funnel. The vibration excitation component and the shock absorbing unit cooperate to realize the vibration excitation of the screen, so that the screen can vibrate to achieve rapid screening. The vibration excitation component is installed on both sides of the screening funnel, and the screening funnel drives the screen to vibrate. While providing vibration for the screen, it also reduces the soil sample residue in the funnel through vibration. At the same time, this method is also convenient for the replacement and maintenance of the screen.

[0143] In addition, as a substitute for the blanking valve, a sample bottle placement assembly B260 is also included, which is arranged below the screening funnel B2302, and includes a telescopic mechanism B2601 connected to the vertical plate, the telescopic direction of the telescopic mechanism B2601 is parallel to the axis of the screening funnel B2302; a support plate B2602 connected to the telescopic mechanism B2601, and the support plate is formed with a sample bottle placement slot;

[0144] When the sample bottle is placed in the placement slot, the opening of the sample bottle is aligned with the lower outlet of the screening funnel, and the opening of the sample bottle is larger than the lower outlet of the screening funnel; the telescopic mechanism can drive the sample bottle on the support plate to approach the screening funnel until the lower outlet of the screening funnel extends into the opening of the sample bottle.

[0145] The sample bottle is placed directly under the funnel. During the screening process, the soil sample is directly loaded into the sample bottle through the funnel, which reduces the transfer link of the soil sample, improves work efficiency, and reduces the overall space occupied by the equipment. It can also support the completion of such work: at the same time, soil samples that have been ground to different degrees are directly screened and loaded into different sample bottles, that is, the bottling operation of two soil samples of different particle sizes is completed at one time. The telescopic mechanism can be, for example, a cylinder, a hydraulic cylinder or an electric cylinder, or a linear module.

[0146] Based on the grinding jar and the device operating in cooperation with the grinding jar disclosed in the above embodiments, an embodiment of realizing integrated processing of soil sample grinding and screening in a more targeted application scenario is provided, which can be referred to Fig.25 and Fig.26 , discloses a soil sample grinding and screening device integrating the device described in the above embodiments, comprising

[0147] Base C3100; mounting frame C3200 installed on one side of base C3100; both can be made of steel structure and welded into an integrated structure, refer to Fig.28 The mounting frame C3200 is directly welded on the base C3100, or it can be connected with a connector. If necessary, the steel structure needs to be stress-released, deformed, or properly machined to make the mounting frame and the base perpendicular to each other.

[0148] The grinding unit C3300 is installed on the mounting frame C3200, and the grinding unit C3300 includes two grinding tools; the specific structure can refer to the scheme involving the soil sample grinding device in the above embodiment.

[0149] The grinding jar A100 has grinding chambers corresponding to two grinding tools respectively; the structure of the grinding jar can also refer to the scheme involving the grinding jar in the previous embodiment.

[0150] The first screening unit C3400 installed on the mounting frame C3200 includes a first screen corresponding to the grinding jar, a first screening funnel corresponding to the first screen, and the first screening funnel includes four funnel bodies. A drop valve corresponding to the four funnel bodies is provided below the first screening funnel. The structure of the first screening unit can refer to the scheme involving the soil sample screening device in the above embodiment, for example Figures 7 to 9 The disclosed scheme.

[0151] The second screening unit C3500 installed on the mounting frame C3200 includes a second screen corresponding to the grinding jar, the second screen includes two independent screening channels corresponding to the two grinding chambers respectively; a second screening funnel corresponding to the second screen, the second screening funnel includes two funnel bodies corresponding to the two screening channels respectively; the structure of the second screening unit can refer to the scheme involving the soil sample screening device in the above embodiment, for example Figures 18 to 20 The disclosed scheme.

[0152] At least four sample bottles C1001; the body of the sample bottle is square with a round opening and can be stacked and grabbed as a whole.

[0153] An operating rail C3600 installed on the other side of the base C3100 and parallel to the mounting frame C3200; combined Fig.28 When making the base steel structure, a frame supporting the operating track can be made on the base, and leveling and correction can be done at the same time.

[0154] The manipulator that can move linearly on the operating track C3600 is matched with the operating track. Two types of manipulators are shown in the figure, including a grinding jar manipulator C3610 that can grab a grinding jar, such as Fig.29 As shown; and a sample bottle manipulator C3620 capable of grabbing a sample bottle, as shown Fig.31 As shown. The grinding jar manipulator C3610 as shown in the figure includes a movable frame, a lifting seat that can be lifted and lowered along the frame, a turntable is arranged on the lifting seat, and a pair of mechanical claws are arranged on the turntable, which can grab the grinding jar, and cooperate with the corresponding structures of the screening unit and the grinding unit to complete the picking and placing of the grinding jar. The sample bottle manipulator C3620 as shown in the figure includes a frame that is also movable, a lifting seat that can be lifted and lowered along the frame, a telescopic table is arranged on the lifting seat, and a pair of mechanical claws are arranged on the telescopic table, which can grab the sample bottle, and cooperate with the corresponding structure of the screening unit to complete the picking and placing of the sample bottle. The above-mentioned manipulator can adopt various mechanisms for realizing linear movement, such as synchronous belts, such as screw nuts, such as cylinders, etc.; various mechanisms for realizing mechanical claw drive can be adopted, such as cylinders; various turntable drive mechanisms can be adopted, such as worm gears. The structures and principles of the various mechanisms involved can be obtained in combination with existing design manuals and finished accessories sold on the market, and no further elaboration will be made.

[0155] A moving track C3700 is provided on the base C3100 and is parallel to the mounting frame C3200. The moving track C3700 is located between the operating track C3600 and the mounting frame C3200;

[0156] The mobile base C3710 matches the mobile track C3700, combined with Fig. 27The movable seat C3710 is provided with a limiting groove C3712 for placing four sample bottles; in the illustrated embodiment, a grinding jar limiting groove C3711 for placing a grinding jar is also provided. The travel of the movable seat C3710 can at least reach below the first screening unit C3400. In other words, the sample bottle can be transported to the bottom of the first screening unit to directly receive the screening material. Combined with the entire solution, the operation of grabbing the sample bottle with a manipulator and installing it on the first screening unit can also be omitted, so that the sample bottle is aligned with the blanking valve of the first screening unit, and the blanking valve is controlled to control part or all of the sample bottles to be loaded with the screened soil sample.

[0157] Through reasonable layout, three functional systems are provided on the base. System 1 includes a grinding unit, which can be used with a grinding tank with a special double grinding chamber to grind the soil sample to one particle size requirement or two particle size requirements. It includes two screening units, which can perform two screenings, that is, to achieve screening and separation of soil samples, wherein the second screening unit can also achieve screening of two particle size requirements to obtain soil samples of two mesh sizes.

[0158] System 2 includes an operating track and a robot, which can complete the placement and transfer of grinding jars and sample bottles.

[0159] System three includes a moving track and a moving seat for placing grinding jars and sample bottles. The sample bottles can also be moved to the bottom of the first screening unit to realize the bottling operation after the first screening unit completes the screening operation.

[0160] The layout of the functional systems of the equipment is neat and compact, which can support the overall arrangement of the equipment in a square space to save space. At the same time, the equipment itself can also be used as a module to form a soil sample processing line with other soil sample equipment. According to the specifications and transportation restrictions, the degree of composition can be selected. Most of the structures can be pre-assembled in the production factory, simplifying the on-site installation and construction work.

[0161] In addition, it provides multiple functions of automation and multiple application scenarios. The grinding unit can grind various particle sizes by adjusting the grinding speed and grinding time of the grinding tool. The two screening units can achieve multi-level grinding and screening on one device, and pack in real time. When combined with the replacement and adjustment of the screen, more improvements can be achieved. The device itself can achieve multiple functions and can also serve as a basic structure that supports multiple improvements and expansions.

[0162] As mentioned above, the structure of the grinding jar can refer to the above embodiment. Figures 1 to 4The description of the soil sample grinding jar shown in the figure, the grinding jar includes a bottom plate; a top opening opposite to the bottom plate; side walls of equal height extending between the edge of the bottom plate and the edge of the top opening, the side walls and the bottom plate together define a grinding chamber, and the grinding chamber is connected to the outside through the top opening; a partition wall is arranged in the grinding jar, the partition wall is connected to the inner wall of the side wall, the number of grinding chambers is two, and the partition wall is located between the two grinding chambers; the bottom plate, the side wall and the partition wall are an integrally formed structure.

[0163] The grinding jar has two grinding chambers, which is the core configuration of the equipment that can meet various work needs. Its structural design takes many factors into consideration. The grinding jar is used as a container for grinding and crushing soil samples. When grinding soil samples, a certain amount of soil samples will be loaded, and then the grinding equipment will be inserted into the grinding jar for grinding and crushing. The design of two cavities can be used as a basic design for simultaneous grinding of multiple cavities. The two grinding chambers are respectively loaded with soil samples and then ground at the same time, which is more efficient than grinding in separate jars. At the same time, it is a connected structure, and the overall design is more compact and space-saving. In terms of operation, the "two jars" of soil samples can be taken and placed in one step.

[0164] In addition, the structure of this grinding tank is also flexible and adaptable. For example, different batches of soil samples can be placed in the two grinding chambers of the tank body and then ground with the same parameters. Alternatively, the same batch of soil samples can be placed in two tank bodies and ground with two grinding tools with different parameters to obtain soil samples of different particle sizes, and the operation is also performed synchronously.

[0165] Another advantage of this design is that in the connected grinding jar, the grinding and crushing performed in the two grinding chambers will not collide with the inner wall of the grinding jar, thereby causing vibration. This vibration is beneficial to improving the efficiency of the grinding of soil samples inside the two jars at the same time.

[0166] Comprehensive reference Figures 10 to 13 In the first screening unit, the first screen has a screening cavity; the upper end of the screening cavity corresponds to the two grinding cavities of the grinding jar; the lower end of the screening cavity corresponds to the top openings of the four funnel bodies of the first screening funnel;

[0167] Comprehensive reference Figure 21 to Figure 24 In the second screening unit, the second screen has two sub-screening cavities, the upper ends of the two sub-screening cavities correspond to the two grinding cavities of the grinding jar respectively; the lower ends of the two sub-screening cavities correspond to the top openings of the two funnel bodies of the second screening funnel respectively.

[0168] The structure of the screen mesh and the grinding jar with two grinding chambers can realize multi-stage screening. When the grinding jar is matched with the first screen mesh, the soil sample in the grinding jar will be evenly screened and separated and then enter the first screening funnel and be divided into four parts. When the grinding jar is matched with the second screen mesh, the soil sample in the grinding jar will be respectively loaded into the two funnel bodies of the second screening funnel. That is to say, when the first screening unit performs screening, the soil sample in the grinding jar can be ground with the same grinding parameters and then screened and evenly divided. When the second screening unit performs screening, different grinding parameters can be used in the two grinding chambers of the grinding jar to obtain soil samples with different crushing degrees, and then they are screened on screens with different mesh sizes. The soil samples in the two grinding chambers are screened through independent channels in the second screening unit and enter the funnel.

[0169] The device provides the possibility of grinding and screening soil samples with three mesh sizes. The operation can be set based on the equipment. For example, a coarser mesh size is first screened in the first screening unit. Half of the soil sample is bottled for retention, and the other half is refluxed or loaded into a grinding jar through a funnel. Then a second grinding is performed to grind to two finer particle sizes, and then the second screening unit is used for a second screening to obtain soil samples with two mesh sizes. In this way, soil samples with three mesh sizes can be obtained. Such a functional configuration can also cooperate with the layout of each unit of the equipment itself. The grinding unit, the first screening unit, and the second screening unit can be arranged in sequence. The soil sample can be loaded into the grinding jar from one end and then collected and bottled at the other end.

[0170] Another more important advantage is that the above scheme is suitable for continuous processing of soil samples. Some existing equipment is also integrated, but when screening with multiple mesh sizes is to be achieved, it is mostly achieved by replacing the screen. For continuous operation, there is no need to frequently replace the screen, which is also a significant advantage of this scheme.

[0171] As an embodiment of cooperating with the device to adapt to the application scenario, the capacity of the grinding jar is set to be greater than the capacity of the sample bottle multiplied by the number of the sample bottles.

[0172] A reasonable configuration is to make the capacity of the grinding jar larger than the overall capacity of the sample bottle, for example, the capacity of the grinding jar is 1.1 to 1.3 times the overall capacity of the sample bottle. This is to consider that the sample bottle can be filled up later after the material is loaded into the grinding jar once.

[0173] Combination Fig.26 , Fig.19 and Fig. 9, the grinding unit, the first screening unit and the second screening unit are all mounted on the mounting frame through a rotating structure; and the rotating axis of the rotating structure is perpendicular to the central axis of the grinding jar when it is placed on the grinding unit, the first screening unit and the second screening unit.

[0174] The rotating structure can facilitate the installation of the grinding jar. After the grinding jar is installed with the opening facing upward, it can be turned upside down to complete the grinding or screening operation. At the same time, the rotating structure itself can also help improve the effect of grinding and screening. For example, during the grinding or screening process, it can swing to make the soil sample jump or vibrate more.

[0175] In addition, combined Figure 7 With reference to the solution disclosed in the foregoing embodiment, the first screening unit further includes an annular clamp installed on the outside of the first screen, and a pair of vibration mounting plates are arranged on the outside of the annular clamp; each of the pair of vibration mounting plates is installed with a pair of vibration excitation components.

[0176] In the device provided in this embodiment, the vibration screen assembly is directly installed on the outside of the screen, and the vibration is directly transmitted to the screen, which makes the screening more efficient. In one scenario, combined with the previous solution, if part of the soil sample that has been screened needs to be screened again, but has been screened and leaked into the screening funnel, the soil sample can be refluxed and returned to the grinding tank by inverting the device. This is also a compact and smooth operation. Applying vibration directly to the screen is conducive to achieving this operation.

[0177] In a specific embodiment, the screening mesh number of the first sieve is set to 10 meshes; the screening mesh numbers of the two sub-screening cavities of the second sieve are 60 meshes and 100 meshes respectively.

[0178] As a more reasonable solution, the particle size requirement for a grinding and screening can be set to 10 meshes. After the first screening, part of the soil sample can be extracted and bottled, and then the second screening and grinding can be continued. Since the first screening has been performed, the time for the second screening will be shortened, and the grinding and screening process will be smoother. In addition, the two finer particle size requirements are also relatively close. The grinding speed can be adjusted to complete the grinding in the two grinding chambers in a similar time, and the subsequent screening work can be directly completed with the corresponding screen.

[0179] In addition, combined with the comprehensive reference Figures 10 to 13 , Figure 21 to Figure 24 In another embodiment, the screening cavity of the first screen is in the shape of an oblong hole; the two sub-screening cavities of the second screen are in the shape of two equal circular holes; in this embodiment, the width of the oblong hole is set to be equal to the diameter of the circular hole; the distance between the centers of the two circular holes is equal to the length of the long side of the oblong hole;

[0180] Combination Fig.25 , Fig.26 and Fig.30 The soil sample grinding and screening equipment also includes a cleaning manipulator C3630 matched with the operating track C3600, the cleaning manipulator C3630 includes a base body C3631 capable of linear movement along the operating track C3600, a lifting frame C3632 arranged on the base body C3631, a lifting platform C3633 matched with the lifting frame C3632 and capable of being lifted and lowered along the lifting frame C3632, a pair of cleaning brushes C3634 arranged on the lifting platform C3633, a pair of rotatable cleaning brushes C3634, the rotation axis of the cleaning brush C3634 is in the vertical direction, and the cleaning radius of the cleaning brush C3632 is equal to the radius of the circular hole in the sieve.

[0181] The advantage of the above scheme is that the shape and structure of the two screens are further optimized, mainly considering the convenience of cleaning the screens. When the screens are opened, the cleaning brush of the cleaning robot can be used to clean them directly without removing the screens. Because the shapes of the two screens are actually roughly the same, it is determined that one cleaning brush can be used to continuously clean the two screens without replacing the screens. This simplifies the cleaning work of the screens and shortens the cleaning time of the screens.

[0182] like Fig.30 The structure for controlling the lifting of the lifting platform on the lifting frame is a screw-nut mechanism. The lifting frame is provided with a screw, and the lifting platform is provided with a nut matching the screw. The lifting is achieved through the screw-nut mechanism composed of the screw and the nut.

[0183] The lifting and lowering of the cleaning brush is achieved more smoothly by using a lead screw nut. Because the cleaning brush needs to be driven to rotate during the cleaning process, the lead screw nut is also more able to resist such working impact.

[0184] In one embodiment, a soil sample grinding and screening method implemented by using the soil sample grinding and screening device as described above is also disclosed, comprising installing a grinding jar on a grinding unit, performing a grinding operation, and grinding the soil samples in the two grinding chambers at least partially to a first particle size using two grinding tools;

[0185] Transferring the grinding jar to the first screening unit; performing a screening operation, and placing the soil sample meeting the first particle size requirement into a sample bottle;

[0186] The grinding jar is transferred to the grinding unit for secondary grinding, and the two grinding apparatuses grind the soil samples in the two grinding chambers to the second particle size and the third particle size respectively;

[0187] The grinding jar is transferred to the second screening unit for secondary screening, and the soil sample meeting the second particle size requirement and the soil sample meeting the third particle size requirement are respectively put into different sample bottles.

[0188] As mentioned above, the grinding and screening of soil samples with three particle size requirements can be completed in one operation through the aforementioned equipment, and the samples can be directly loaded into sample bottles, that is, one soil sample can be put into the soil bottle, that is, three kinds of soil samples with different mesh sizes can be directly obtained, and the process arrangement is reasonable and coherent, which saves processing time. A coarser mesh soil sample can be directly obtained and bottled after a screening, and then the soil sample that has been ground once is ground twice, which shortens the grinding time. At the same time, it is more friendly to the equipment for fine-mesh grinding and can extend the service life of the equipment. Then, two soil samples with finer mesh sizes can be obtained at the same time through a secondary screening. This method has not been adopted or disclosed before.

[0189] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0190] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0191] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A soil sample grinding and screening device, characterized in that: include Pedestal; A mounting frame mounted on one side of the base; A grinding unit mounted on the mounting frame, the grinding unit comprising two grinding tools; A grinding jar, wherein the grinding jar has grinding chambers corresponding to the two grinding tools respectively; A first screening unit installed on the mounting frame, the first screening unit comprising The first screen corresponding to the grinding jar, A first screening funnel corresponding to the first screen, the first screening funnel comprising four funnel bodies, Disposing drop valves corresponding to the four funnel bodies respectively below the first screening funnel; A second screening unit installed on the mounting frame, the second screening unit comprising A second screen corresponding to the grinding jar, wherein the second screen includes two independent screening channels corresponding to the two grinding chambers respectively; a second screening funnel corresponding to the second screen, the second screening funnel comprising two funnel bodies corresponding to two screening channels respectively; At least four sample bottles; An operating rail mounted on the other side of the base and parallel to the mounting frame; A manipulator matched with the operating track, the manipulator being capable of grabbing the grinding jar and / or the sample bottle; A movable track provided on the base and parallel to the mounting frame, wherein the movable track is located between the operating track and the mounting frame; A movable seat matched with the movable track, the movable seat being provided with limiting grooves for placing the four sample bottles; the travel of the movable seat being able to reach at least below the first screening unit; The grinding jar comprises Base plate; a top opening opposite to the bottom plate; A side wall of equal height extending between the edge of the bottom plate and the edge of the top opening, wherein the side wall and the bottom plate together define a grinding chamber, and the grinding chamber is in communication with the outside through the top opening; A partition wall is arranged in the grinding jar, the partition wall is connected to the inner wall of the side wall, the number of the grinding chambers is two, and the partition wall is located between the two grinding chambers; The bottom plate, the side wall and the partition wall are an integrally formed structure.

2. The soil sample grinding and screening device according to claim 1, characterized in that: The first screen has a screening cavity; the upper end of the screening cavity corresponds to the two grinding cavities at the same time; the lower end of the screening cavity corresponds to the top openings of the four funnel bodies of the first screening funnel at the same time; The second screen has two sub-screening cavities, the upper ends of the two sub-screening cavities correspond to the two grinding cavities respectively; the lower ends of the two sub-screening cavities correspond to the top openings of the two funnel bodies of the second screening funnel respectively.

3. The soil sample grinding and screening device according to claim 2, characterized in that: The capacity of the grinding jar is greater than the capacity of the sample bottle multiplied by the number of the sample bottles.

4. The soil sample grinding and screening device according to claim 1, characterized in that: The grinding unit, the first screening unit and the second screening unit are all mounted on the mounting frame via a rotating structure; and the rotation axis of the rotating structure is perpendicular to the central axis of the grinding jar when it is placed on the grinding unit, the first screening unit and the second screening unit.

5. The soil sample grinding and screening device according to claim 4, characterized in that: The first screening unit further comprises an annular clamp installed on the outside of the first screen, and a pair of vibration mounting plates are arranged on the outside of the annular clamp; each of the pair of vibration mounting plates is installed with a pair of the vibration excitation components.

6. The soil sample grinding and screening device according to claim 3, characterized in that: The screening mesh number of the first screen is 10 meshes; the screening mesh numbers of the two sub-screening cavities of the second screen are 60 meshes and 100 meshes respectively.

7. The soil sample grinding and screening device according to claim 1, characterized in that: The screening cavity of the first screen is in the shape of an oblong hole; the two sub-screening cavities of the second screen are in the shape of two equal circular holes; the width of the oblong hole is equal to the diameter of the circular hole; the distance between the centers of the two circular holes is equal to the length of the long side of the oblong hole; The soil sample grinding and screening equipment also includes a cleaning manipulator matched with the operating track, the cleaning manipulator includes a seat body capable of linearly moving along the operating track, a lifting frame arranged on the seat body, a lifting platform matched with the lifting frame and capable of being lifted and lowered along the lifting frame, and a pair of cleaning brushes arranged on the lifting platform, the pair of cleaning brushes are rotatable, the rotation axis of the cleaning brushes is in the vertical direction, and the cleaning radius of the cleaning brush is equal to the radius of the circular hole.

8. The soil sample grinding and screening device according to claim 7, characterized in that: The lifting frame is provided with a lead screw, and the lifting platform is provided with a nut matching the lead screw, and lifting is achieved through a lead screw and nut mechanism formed by the lead screw and the nut.

9. A soil sample grinding and screening method using the soil sample grinding and screening device according to any one of claims 1 to 8, comprising: The grinding jar is mounted on the grinding unit to perform a grinding operation, wherein the two grinding tools grind at least part of the soil samples in the two grinding chambers to a first particle size; transferring the grinding jar to a first screening unit; Perform a screening, and put the soil sample that meets the first particle size requirement into a sample bottle; The grinding jar is transferred to the grinding unit for secondary grinding, and the two grinding apparatuses grind the soil samples in the two grinding chambers to the second particle size and the third particle size respectively; The grinding jar is transferred to the second screening unit for secondary screening, and the soil sample meeting the second particle size requirement and the soil sample meeting the third particle size requirement are respectively put into different sample bottles.

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