Sample mixing and dividing device and control method thereof

Abstract

The invention provides a sample mixing and division device and a control method thereof, and belongs to the field of sample mixing and division, the sample mixing and division device comprises a support frame, and a mixing unit and a division unit which are arranged on the support frame from top to bottom; the division unit comprises a division chamber and a second rotary driving mechanism connected with the division chamber, the division chamber comprises a material receiving cavity and m division cavities arranged below the material receiving cavity, raw materials to be uniformly mixed enter the division unit after being uniformly mixed by the uniform mixing unit and uniformly enter the m division cavities from the material receiving cavity to obtain m uniformly-divided materials, and after m-1 uniformly-divided materials are discharged, the m uniformly-divided materials enter the division unit; and the second rotary driving mechanism drives the division chamber to turn over periodically, the m-1 pieces of equally divided materials are discharged again, and the step of turning over and discharging is repeated till 1 / mn division materials are obtained. Through the arrangement of the uniform mixing unit, the raw materials to be uniformly mixed are uniformly mixed; and then the sample is divided for multiple times by controlling periodic overturning and discharging of the division unit, the conception is ingenious, and the operation method is simple.

Description

Technical Field

[0001] This application relates to the technical field of sample mixing and reduction, and specifically relates to a sample mixing and reduction device and its control method. Background Art

[0002] In the process of production sample preparation or analysis and testing, the general processing steps are to grind, mix, and reduce the raw materials, and then carry out subsequent sample preparation or analysis and testing steps. Grinding can refine the raw materials and increase their specific surface area, providing favorable conditions for subsequent process steps; the mixing and reduction of mineral samples are key links in the sample preparation process. Mixing is to fully mix different components in the ground samples to make the samples fully uniform, so that the content distribution of each component inside the samples is uniform, thereby improving the representativeness of sampling and the accuracy of detection during the detection process. The reduction process is to divide the minerals into several samples with the same reliability, which can reduce the sample volume without affecting the content of each component inside. Currently, reduction is usually carried out by the manual quartering method or using a riffle. Manual reduction has low efficiency, high labor intensity, and poor operation reliability. The riffle can only evenly divide the sample into two parts through one reduction and cannot automatically achieve multiple reductions. Summary of the Invention

[0003] In view of the technical problems in the background art, this application provides a sample mixing and reduction device and its control method. This sample mixing and reduction device has a simple structure, is convenient to operate, occupies a small space, and can achieve multiple reductions of the mixed samples without completely discharging the mixed materials.

[0004] In the first aspect, an embodiment of this application provides a sample mixing and reduction device, including a support frame, and a mixing unit and a reduction unit arranged on the support frame from top to bottom; the reduction unit includes a reduction chamber and a second rotation driving mechanism connected to the reduction chamber. The reduction chamber includes a material receiving cavity and m reduction cavities arranged below the material receiving cavity. The raw materials to be mixed enter the reduction unit after being mixed by the mixing unit, and evenly enter the m reduction cavities from the material receiving cavity to obtain m evenly divided materials. After discharging m - 1 evenly divided materials, the second rotation driving mechanism drives the reduction chamber to periodically flip, and then discharges m - 1 evenly divided materials again. Repeat the flipping and discharging steps until a reduction material of 1 / m n is obtained.

[0005] In the technical solution of the embodiment of this application, by setting a mixing unit, the raw materials to be mixed are mixed to obtain mixed materials, which is convenient for subsequent reduction; by setting a reduction unit that periodically flips, multiple reductions of the mixed samples can be achieved without completely discharging the mixed materials; and during the periodic flipping process, the mixed materials can be further mixed through periodic rotation; at the same time, the reduction unit occupies a small space.

[0006] In some embodiments, a guiding channel is provided between the material receiving cavity and the quartering cavity.

[0007] In the technical solution of the embodiment of the present application, by providing the guiding channel, the mixed material can enter different quartering cavities evenly and smoothly, achieving equal division.

[0008] In some embodiments, the guiding channel includes a plurality of guiding plates and guiding grooves provided between the guiding plates.

[0009] In the technical solution of the embodiment of the present application, by providing the guiding plates, the mixed material can be dispersed in different guiding grooves, improving the dispersion uniformity of the mixed material when entering different quartering cavities, and further achieving equal division of the mixed material.

[0010] In some embodiments, the second rotation driving mechanism includes a second rotating shaft and a second driving assembly for driving the second rotating shaft to rotate; the second rotating shaft is arranged between the quartering chamber and the support frame; a bearing is provided between the second rotating shaft and the support frame.

[0011] In the technical solution of the embodiment of the present application, by providing the second rotating shaft and the second driving assembly, the second driving assembly drives the second rotating shaft to rotate, thereby driving the quartering chamber to rotate, realizing multiple quartering of the mixed material.

[0012] In some embodiments, the second driving assembly includes a second driving motor, a second driving wheel and a second driven wheel; the second driving motor is arranged on the support frame, the second driving wheel is connected to the output shaft of the second driving motor, and the second driven wheel is sleeved on the second rotating shaft and meshed with the second driving wheel.

[0013] In the technical solution of the embodiment of the present application, through the mutual cooperation of the second driving motor, the second driving wheel and the second driven wheel, the second rotating shaft is driven to rotate, realizing the periodic flipping of the quartering chamber, and thus realizing multiple equal divisions of the mixed material.

[0014] In some embodiments, a second solenoid valve is provided below the quartering cavity.

[0015] In the technical solution of the embodiment of the present application, by providing the second solenoid valve, the opening and closing of the discharge port of the quartering cavity are electrically controlled, the control method is simple, the operation is convenient, and the practicability is strong.

[0016] In some embodiments, the mixing unit includes a mixing chamber and a first rotation driving mechanism connected to the mixing chamber.

[0017] In the technical solution of the embodiment of the present application, by providing the first rotation driving mechanism, the mixing chamber is driven to rotate 360°, so that the raw materials in the mixing chamber rotate continuously to achieve mixing.

[0018] In some embodiments, the mixing chamber includes at least two feed cavities and a mixing cavity disposed below the feed cavities; the first rotation driving mechanism includes a first rotating shaft and a first driving assembly; the first rotating shaft is disposed between the mixing chamber and the support frame; a bearing is provided between the first rotating shaft and the support frame; the first driving assembly includes a first driving motor, a first driving wheel, and a first driven wheel; the first driving motor is disposed on the support frame, the first driving wheel is connected to the output shaft of the first driving motor, and the first driven wheel is sleeved on the first rotating shaft and meshed with the first driving wheel.

[0019] In the technical solution of the embodiment of the present application, through the mutual cooperation of the first driving motor, the first driving wheel, and the first driven wheel, the first rotating shaft is driven to rotate, so that the raw materials are continuously rotated between the feed cavity and the mixing cavity to achieve the mixing of the raw materials.

[0020] In some embodiments, a first solenoid valve for automatically controlling the opening and closing of the discharge port of the mixing cavity is provided at the discharge port end of the mixing cavity.

[0021] In the technical solution of the embodiment of the present application, by providing the first solenoid valve, the opening and closing of the discharge port of the mixing cavity are electrically controlled, and the control method is simple, the operation is convenient, and the practicability is strong.

[0022] In a second aspect, the embodiment of the present application provides a control method for the sample mixing and dividing device provided in the first aspect of the present application, including the following steps:

[0023] Add the raw materials to be mixed into the mixing unit, and after being mixed by the mixing unit, place them in the receiving cavity of the dividing unit;

[0024] When n = 1, the mixed materials uniformly enter m dividing cavities from the receiving cavity, and m evenly divided materials are obtained after discharging;

[0025] When n ≥ 2, after discharging m - 1 evenly divided materials, the second rotation driving mechanism drives the dividing chamber to flip a cycle, and then discharges m - 1 evenly divided materials again, and repeats the flipping and discharging steps until 1 / m n of the divided materials is obtained.

[0026] In the technical solution of the embodiment of the present application, by controlling the periodic flipping and discharging of the dividing unit, multiple divisions of the sample are realized, and the concept is ingenious and the operation method is simple.

[0027] The above description is only an overview of the technical solution of the present application. In order to better understand the technical means of the present application, it can be implemented according to the content of the specification. And in order to make the above and other objects, features and advantages of the present application more obvious and understandable, the following specific embodiments of the present application are specifically described. Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solution of the present application, the drawings used in the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 It is a schematic structural diagram of the sample mixing and dividing device in the embodiment of the present application;

[0030] Figure 2 is Figure 1 a schematic structural diagram of the mixing unit in

[0031] Figure 3 is Figure 1 a schematic structural diagram of the dividing unit in

[0032] Figure 4 is Figure 1 a perspective view of the dividing chamber in

[0033] Figure 5 is Figure 1 a side view of the dividing chamber in

[0034] Figure 6 is Figure 1 a front view of the dividing chamber in

[0035] Description of the reference numerals: 100 - sample mixing and dividing device; 1 - support frame; 2 - mixing unit; 3 - dividing unit; 4 - conveying channel; 5 - connecting rod; 6 - collecting unit; 7 - first limiting block; 8 - second limiting block; 21 - mixing chamber; 22 - first rotation driving mechanism; 23 - first solenoid valve; 24 - rotary valve; 31 - material receiving cavity; 32 - dividing cavity; 33 - second rotation driving mechanism; 34 - guiding channel; 35 - second solenoid valve; 61 - collecting bag; 62 - transportation bin; 211 - feeding cavity; 212 - mixing cavity; 221 - first rotating shaft; 222 - first driving motor; 223 - first driving wheel; 224 - first driven wheel; 331 - second rotating shaft; 332 - second driving motor; 333 - second driving wheel; 334 - second driven wheel; 341 - guiding plate; 342 - guiding groove; 343 - partition plate. Detailed Description of the Embodiments

[0036] The embodiments of the technical solution of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, so they are only examples and cannot be used to limit the protection scope of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

[0038] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality" means more than two unless otherwise specifically defined.

[0039] Referring to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The phrase appears in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0040] In the description of the embodiments of this application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0041] In the process of production sample preparation or analysis and detection, the general processing steps are to grind, mix, and reduce the raw materials, and then perform subsequent sample preparation or analysis and detection steps. The mixing and reduction of mineral samples are the key links in the sample preparation process. The reduction of samples usually requires the use of a splitter. At present, reduction is usually carried out by the manual quartering method or using a riffle. Manual reduction has low efficiency, high labor intensity, and poor operation reliability. The riffle can only evenly divide the sample into two parts through one reduction and cannot automatically achieve multiple reductions.

[0042] To solve the technical problems of low efficiency and poor operational reliability in manual sample reduction, and the inability of riffles to automatically perform multiple reductions, the present application provides a sample mixing and reduction device and its control method. Among them, by setting a mixing unit, different components in the sample are fully mixed to obtain a mixed material with a uniform distribution of each component content inside the sample, facilitating subsequent reduction; by setting a periodically rotating reduction unit, multiple reductions of the mixed sample can be achieved without completely discharging the mixed material; and during the periodic rotation, the mixed material can be further mixed through periodic rotation.

[0043] In the first aspect, please refer to Figure 1 , the sample mixing and reduction device 100 provided by the embodiment of the present application includes a support frame 1, and a mixing unit 2 and a reduction unit 3 arranged on the support frame 1 from top to bottom; the reduction unit 3 includes a reduction chamber and a second rotation driving mechanism 33 connected to the reduction chamber, the reduction chamber includes a material receiving chamber 31 and m reduction chambers 32 arranged below the material receiving chamber 31; the raw material to be mixed enters the reduction unit 3 after being mixed by the mixing unit 2, and evenly enters the m reduction chambers 32 from the material receiving chamber 31 to obtain m evenly divided materials. After discharging m - 1 evenly divided materials, the second rotation driving mechanism 33 drives the reduction chamber to perform periodic flipping, and then discharges m - 1 evenly divided materials again, repeating the flipping and discharging steps until a reduction material of 1 / m n is obtained. Wherein, m is an integer greater than or equal to 2, and n is an integer greater than or equal to 1. The discharge port of the mixing unit 2 is arranged directly above the material receiving chamber 31.

[0044] In the technical solution of the embodiment of the present application, by setting the mixing unit 2, the raw material to be mixed is mixed to obtain a mixed material, facilitating subsequent reduction; by setting the reduction unit 3, the mixed material is reduced once or multiple times. Specifically, by arranging m reduction chambers 32 below the material receiving chamber 31, the mixed material discharged from the mixing unit 2 enters different reduction chambers 32 through the material receiving chamber 31, and the mixed material is evenly divided into m parts to obtain a reduction material of 1 / m, that is, the reduction material in each reduction chamber 32 is 1 / m of the mass of the mixed material; by setting the second rotation driving mechanism 33, the material receiving chamber 31 and the reduction chambers 32 can be driven to perform periodic flipping. When it is necessary to further reduce the reduction material of 1 / m, first discharge m - 1 evenly divided materials, and then the second rotation driving mechanism 33 drives the material receiving chamber 31 and the reduction chambers 32 to flip a cycle, and discharge m - 1 evenly divided materials again, continuously repeating the flipping and discharging, that is, performing periodic flipping and discharging, until a reduction material of 1 / m n is obtained, and at this time, the reduction material in each reduction chamber 32 is 1 / m of the mass of the mixed material. n。During the actual production process, one or more divisions can be carried out according to production needs. Among them, the periodic rotation is to rotate 360° and return to the original position, or to rotate 180° and then return to the original position along the original path. By setting the dividing unit 3 in this application, multiple divisions of the mixed sample can be achieved without completely discharging the mixed material; and during the periodic rotation process, the mixed material can be further mixed by periodic rotation; at the same time, the dividing unit 3 of this application occupies a small space.

[0045] Further, in the embodiment of this application, as Figure 1 shown, a guiding channel 34 is provided between the material receiving cavity 31 and the dividing cavity 32.

[0046] In the technical solution of the embodiment of this application, when the mixed material enters different dividing cavities 32 from the material receiving cavity 31, by setting the guiding channel 34, the mixed material can enter different dividing cavities 32 evenly and smoothly, achieving equal distribution.

[0047] Further, in the embodiment of this application, as Figure 4 and Figure 5 shown, the guiding channel 34 includes several guiding plates 341 and guiding grooves 342 provided between the guiding plates 341. Specifically, as Figure 4 shown, the number of dividing cavities 32 is two. The guiding plate 341 is parallel to the front surface of the dividing cavity 32, that is, the plane where the arrow is located, or the guiding plate 341 is set perpendicular to the front surface of the dividing cavity 32, that is, the plane where the arrow is located. At this time, the guiding plate 341 at the center is on the same plane as the side wall shared by adjacent dividing cavities 32. The distance between adjacent guiding plates 341 is 3 - 8 mm.

[0048] In the technical solution of the embodiment of this application, by setting several guiding plates 341 to form multiple guiding grooves 342, when the mixed material enters the dividing cavity 32 through the material receiving cavity 31, the guiding plates 341 can disperse the mixed material in different guiding grooves 342 and enter the corresponding dividing cavities 32 below through the guiding grooves 342, improving the dispersion uniformity of the mixed material when entering different dividing cavities 32 and achieving equal distribution of the mixed material. Without setting the guiding plates 341, the mixed material is more concentrated when entering the material receiving cavity 31. If the direction of the mixed material entering the material receiving cavity 31 is deviated, that is, when the mixed material is not completely at the center of the material receiving cavity 31, the mixed material entering different dividing cavities 32 will be uneven.

[0049] Further, in the embodiment of this application, as Figure 6 shown, when the guiding plate 341 is parallel to the front surface of the dividing cavity 32, a partition plate 343 perpendicular to the guiding plate 341 can be set. The partition plate 343 extends from the side wall shared by adjacent dividing cavities 32 to the discharge port end of the material receiving cavity 31. The number of partition plates 343 is the same as the number of dividing cavities 32.

[0050] In the technical solution of the embodiment of the present application, the partition plate 343 divides the guiding channel 34 into spaces with the same number as the number of the reduction chambers 32, further realizing the even distribution of the mixed material.

[0051] Further, in the embodiment of the present application, as Figure 3 shown, the second rotation driving mechanism 33 includes a second rotating shaft 331 and a second driving assembly for driving the rotation of the second rotating shaft 331; the second rotating shaft 331 is arranged between the reduction chamber and the support frame 1; a bearing is arranged between the second rotating shaft 331 and the support frame 1, that is, a bearing is arranged at the part where the second rotating shaft 331 contacts the support frame 1. The second rotating shaft 331 is fixedly connected to the reduction chamber. Specifically, the second rotating shaft 331 is connected to the guiding channel 34.

[0052] In the technical solution of the embodiment of the present application, by arranging the second rotating shaft 331 between the reduction chamber and the support frame 1, and connecting the second rotating shaft 331 and the support frame 1 through a bearing, the rotation of the second rotating shaft 331 is smoothly realized; by arranging the second driving assembly, the second rotating shaft 331 is driven to rotate, thereby driving the reduction chamber to rotate, and realizing the multiple reduction of the mixed material.

[0053] Further, in the embodiment of the present application, as Figure 3 shown, the second driving assembly includes a second driving motor 332, a second driving wheel 333 and a second driven wheel 334; the second driving motor 332 is arranged on the support frame 1, the second driving wheel 333 is connected to the output shaft of the second driving motor 332, the second driven wheel 334 is sleeved on the second rotating shaft 331 and is meshed and connected with the second driving wheel 333, and the second driven wheel 334 is fixedly connected to the second rotating shaft 331.

[0054] In the technical solution of the embodiment of the present application, by connecting the second driving wheel 333 to the output shaft of the second driving motor 332, and meshing the second driving wheel 333 with the second driven wheel 334, the second driving motor 332 drives the second driving wheel 333 to rotate, thereby driving the second driven wheel 334 to rotate, and further driving the second rotating shaft 331 to rotate, realizing the periodic flipping of the reduction chamber, and thus realizing the multiple even distribution of the mixed material.

[0055] Further, in the embodiment of the present application, as Figure 1 shown, a second solenoid valve 35 is arranged at the discharge port end of the reduction chamber 32.

[0056] In the technical solution of the embodiment of the present application, by arranging the second solenoid valve 35 at the discharge port end of the reduction chamber 32, the opening and closing of the discharge port of the reduction chamber 32 are electrically controlled, the control method is simple, the operation is convenient, and the practicability is strong.

[0057] Further, in the embodiment of the present application, the sample mixing and reducing device 100 further includes an automatic control system, which is used to control the automatic opening and closing of the second solenoid valve 35, the rotation of the reducing chamber, and the number of rotations. Specifically, the automatic control system can be a remote control.

[0058] In the technical solution of the embodiment of the present application, by setting the automatic control system, the automatic opening and closing of the second solenoid valve 35, the rotation of the reducing chamber, and the number of rotations are controlled by the automatic control system, without manually opening and closing the second solenoid valve 35 and rotating the reducing chamber by personnel. The control method is simple and the labor is reduced.

[0059] Further, in the embodiment of the present application, as Figure 1 shown, the mixing unit 2 includes a mixing chamber 21 and a first rotation driving mechanism 22 connected to the mixing chamber 21.

[0060] In the technical solution of the embodiment of the present application, by setting the first rotation driving mechanism 22, the mixing chamber 21 is driven to rotate 360°, so that the raw materials in the mixing chamber 21 keep rotating in the mixing chamber 21. Compared with the device using a rotary stirrer for mixing, in the mixing process of the mixing unit 2 of the present application, the problem of uneven mixing caused by dead corners in the mixing chamber 21 is avoided, and the raw materials are mixed more evenly to improve the quality.

[0061] Further, in the embodiment of the present application, as Figure 2 shown, the first rotation driving mechanism 22 includes a first rotating shaft 221 and a first driving assembly; the first rotating shaft 221 is arranged between the mixing chamber 21 and the support frame 1; a bearing is provided between the first rotating shaft 221 and the support frame 1, that is, a bearing is provided at the part where the first rotating shaft 221 contacts the support frame 1, and the first rotating shaft 221 is fixedly connected to the mixing chamber 21; the driving assembly includes a first driving motor 222, a first driving wheel 223 and a first driven wheel 224; the first driving motor 222 is arranged on the support frame 1, the first driving wheel 223 is connected to the output shaft of the first driving motor 222, the first driven wheel 224 is sleeved on the first rotating shaft 221 and meshed with the first driving wheel 223, and the first driven wheel 224 is fixedly connected to the first rotating shaft 221.

[0062] In the technical solution of the embodiment of the present application, by arranging a first rotating shaft 221 between the mixing chamber 21 and the support frame 1, and connecting the first rotating shaft 221 with the support frame 1 through a bearing, the rotation of the first rotating shaft 221 is smoothly realized; by arranging a first driving component to drive the rotation of the first rotating shaft 221, thereby driving the rotation of the mixing chamber 21 to achieve the mixing of raw materials; specifically, by connecting the first driving wheel 223 with the output shaft of the first driving motor 222, and meshing the first driving wheel 223 with the first driven wheel 224, the first driving motor 222 drives the first driving wheel 223 to rotate, thereby driving the first driven wheel 224 to rotate, and further driving the first rotating shaft 221 to rotate, realizing the periodic rotation of the mixing chamber 21, and thus realizing the mixing of raw materials.

[0063] Further, in the embodiment of the present application, as Figure 2 shown, the mixing chamber 21 includes at least two feeding chambers 211 and a mixing chamber 212 arranged below the feeding chambers 211. Specifically, through the rotating mixing unit 2, the raw materials enter the mixing chamber 212 from the feeding chambers 211, and then enter different feeding chambers 211 from the mixing chamber 212, continuously repeating the rotation process to achieve the mixing of raw materials.

[0064] In the technical solution of the embodiment of the present application, by setting the mixing chamber 21 into two parts, namely a plurality of feeding chambers 211 located above and a mixing chamber 212 located below, firstly, when feeding, multiple feeding ports of the feeding chambers 211 can be used for feeding simultaneously, and the feeding speed is fast; secondly, the feeding ports of each feeding chamber 211 are relatively small, which can prevent raw material dust from flying to a certain extent during the feeding process.

[0065] Further, in the embodiment of the present application, as Figure 2 shown, the feeding chambers 211 are inclined, and the discharge ports of different feeding chambers 211 converge.

[0066] In the technical solution of this embodiment, by arranging the feeding chambers 211 in an inclined manner and ensuring that the discharge ports of different feeding chambers 211 converge, during the mixing process, the raw materials continuously enter the mixing chamber 212 from different feeding chambers 211, and then enter different feeding chambers 211 from the mixing chamber 212. In this process, the raw materials are continuously divided into two parts and then combined, repeating multiple times to increase the uniformity; at the same time, when the raw materials continuously enter the mixing chamber 212 from different feeding chambers 211, collisions will occur, and when the raw materials enter different feeding chambers 211 from the mixing chamber 212, they will also collide with the side walls of the feeding chambers 211, and the continuous collisions further mix the raw materials. Further, in the embodiment of the present application, as Figure 2 shown, a rotary valve 24 is provided at the feeding port end of the feeding chamber 211.

[0067] In the technical solution of the embodiment of the present application, feeding is achieved by opening the rotary valve 24; by closing the rotary valve 24, the feeding port of the feeding chamber 211 is firmly sealed to prevent the raw materials in the mixing chamber 21 from splashing during the rotary mixing process.

[0068] Further, in the embodiment of the present application, as Figure 2 shown, a first solenoid valve 23 for controlling the automatic opening and closing of the discharge port of the mixing chamber 212 is provided at the discharge port end of the mixing chamber 212. When the mixing chamber 21 reaches a preset number of rotation cycles or a preset rotation time, the first solenoid valve 23 is opened to achieve discharging. The number of rotation cycles or the rotation time, and the opening and closing of the first solenoid valve 23 can be controlled by an automatic control system.

[0069] In the technical solution of the embodiment of the present application, by setting the first solenoid valve 23, the first solenoid valve 23 is opened when the discharge port of the mixing chamber 212 is directly above the sample reduction unit 3 to discharge the mixed material in the mixing chamber 21; the first solenoid valve 23 is closed at other positions to prevent the raw materials in the mixing chamber 21 from splashing during the rotary mixing process. The control method is simple, the operation is convenient, and the practicability is strong.

[0070] Further, in the embodiment of the present application, as Figure 1 shown, a conveying channel 4 is provided between the mixing unit 2 and the sample reduction unit 3, and a connecting rod 5 is provided between the conveying channel 4 and the support frame 1. The size of the feeding port of the conveying channel 4 is greater than or equal to the size of the discharge port of the mixing unit 2, and the size of the discharge port of the conveying channel 4 is less than or equal to the size of the feeding port of the sample reduction unit 3.

[0071] In the technical solution of the embodiment of the present application, by providing a conveying channel 4 between the mixing unit 2 and the sample reduction unit 3, the mixed material discharged from the mixing unit 2 is gathered and then enters the sample reduction unit 3 to prevent the raw materials from scattering and generating dust. By providing the connecting rod 5, the conveying channel 4 is fixed on the support frame 1.

[0072] Further, in the embodiment of the present application, as Figure 1 shown, a collection unit 6 is provided below the sample reduction unit 3. The collection unit 6 includes a plurality of collection bags 61, and the collection bags 61 are arranged directly below the discharge ports of different sample reduction chambers 32; the collection unit 6 further includes a transport bin 62 for accommodating the collection bags 61.

[0073] In the technical solution of the embodiment of the present application, the collection of the mixed material is achieved by providing the collection bags 61; by providing the transport bin 62, the collected sample-reduced material is transported to a corresponding position for storage for subsequent operations.

[0074] Further, in the embodiment of the present application, a conveying channel 4 is provided between the dividing unit 3 and the collecting unit 6 to gather the divided materials discharged from the dividing unit 3 and then enter the dividing unit 3, preventing the divided materials from scattering and generating dust.

[0075] Further, in the embodiment of the present application, as Figure 1 shown, first limiting blocks 7 are provided at both ends of the first rotating shaft 221, and second limiting blocks 8 are provided at both ends of the second rotating shaft 331.

[0076] In the technical solution of the embodiment of the present application, by providing the first limiting blocks 7 and the second limiting blocks 8, the detachment of the first rotating shaft 221 and the second rotating shaft 331 during the rotation process is prevented, improving the safety of the device.

[0077] In a second aspect, the present application provides a control method for the above sample mixing and dividing device 100, including the following steps:

[0078] Add the raw materials to be mixed into the mixing unit 2. After being mixed by the mixing unit 2, they are placed into the material receiving cavity 31 of the dividing unit 3;

[0079] When n = 1, that is, perform one division. The mixed materials uniformly enter m dividing cavities 32 from the material receiving cavity 31, and m evenly divided materials are obtained after discharging the materials;

[0080] When n ≥ 2, that is, perform multiple divisions. After discharging m - 1 evenly divided materials, the second rotation driving mechanism 33 flips the material receiving cavity 31 and the dividing cavities 32 for one cycle, discharges the m - 1 evenly divided materials again, and repeats the flipping and discharging steps until a divided material of 1 / m n is obtained.

[0081] In the technical solution of the embodiment of the present application, by controlling the periodic flipping and discharging of the dividing unit 3, multiple divisions of the sample are realized, with a clever concept and a simple operation method.

[0082] Please refer to Figures 1 to 6 together. According to one or more embodiments of the present application, the present application fully mixes the raw materials to be mixed by providing a rotating and mixing type mixing unit 2 to obtain mixed materials, facilitating subsequent division; by providing a periodically flipping type dividing unit 3, multiple divisions of the mixed sample can be realized without completely discharging the mixed materials; and the mixed materials can be further mixed by periodic rotation during the periodic flipping process; at the same time, the dividing unit 3 of the present application occupies a small space.

[0083] The present invention will be described in detail below through specific embodiments.

[0084] Embodiment 1

[0085] This embodiment provides a control method for a sample mixing and reduction device, which realizes two-stage reduction by using the sample mixing and reduction device 100, that is, m = 2, n = 2; the method includes the following steps:

[0086] S1. Add 10 kg of ground raw materials into the two feeding chambers 211 from the feeding port ends respectively. Start the first driving motor 222, and the first driving motor 222 drives the first driving wheel 223 to rotate, thereby driving the first driven wheel 224 to rotate, and further driving the first rotating shaft 221 to rotate, so as to realize the periodic rotation of the mixing chamber 21. When the mixing chamber 21 rotates 50 circles, open the first electromagnetic valve 23 when the discharge port of the mixing chamber 212 is directly above the reduction unit 3, and discharge the uniformly mixed material in the mixing chamber 21.

[0087] S2. The uniformly mixed material enters the receiving chamber 31 and evenly and smoothly enters the two different reduction chambers 32 through the guiding grooves 342, that is, 1 / 2 of the evenly divided material is obtained. After discharging the evenly divided material in one of the reduction chambers 32, start the second driving motor 332, and the second driving motor 332 drives the second driving wheel 333 to rotate, thereby driving the second driven wheel 334 to rotate, and further driving the second rotating shaft 331 to rotate. After the reduction chamber is turned over for one cycle and returns to its original position, at this time, the remaining sample in the other reduction chamber 32 can enter the receiving chamber 31 during this process and again evenly and smoothly enter the two different reduction chambers 32 through the guiding grooves 342, and 1 / 4 of the reduced material is obtained.

[0088] During the operation process, the uniformly mixed material can be completely discharged by automatically vibrating the mixing chamber 21 and the reduction chamber.

[0089] It should be noted that this application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments with the same structure and the same function and effect as the technical idea within the technical solution scope of this application are all included in the technical scope of this application. In addition, within the scope of not departing from the main idea of this application, various deformations that can be thought of by those skilled in the art to the embodiments, and other ways constructed by combining some constituent elements in the embodiments are also included in the scope of this application.

Claims

1. A sample mixing and reduction device, characterized in that, It includes a support frame, a mixing unit and a splitting unit arranged on the support frame from top to bottom; the splitting unit includes a splitting chamber and a second rotation driving mechanism connected to the splitting chamber, the splitting chamber includes a material receiving cavity and m splitting cavities arranged below the material receiving cavity, the raw material to be mixed enters the splitting unit after being mixed by the mixing unit, and evenly enters the m splitting cavities from the material receiving cavity to obtain m evenly divided materials. After discharging m - 1 evenly divided materials, the second rotation driving mechanism drives the splitting chamber to periodically flip, and discharges the m - 1 evenly divided materials again, repeating the flipping and discharging steps until obtaining a split material of 1 / m n of the split material.

2. The sample mixing and reducing device according to claim 1, characterized in that, A guiding channel is provided between the material receiving cavity and the reduction cavity.

3. The sample mixing and reducing device according to claim 2, wherein The guiding channel includes a plurality of guiding plates and guiding grooves arranged between the guiding plates.

4. The sample mixing and reducing device according to claim 1, characterized in that, The second rotation driving mechanism includes a second rotating shaft and a second driving assembly for driving the second rotating shaft to rotate; the second rotating shaft is arranged between the reduction chamber and the support frame; a bearing is provided between the second rotating shaft and the support frame.

5. The sample mixing and reduction device according to claim 4, characterized in that, The second driving assembly includes a second driving motor, a second driving wheel and a second driven wheel; the second driving motor is arranged on the support frame, the second driving wheel is connected to the output shaft of the second driving motor, and the second driven wheel is sleeved on the second rotating shaft and is meshed and connected with the second driving wheel.

6. The sample mixing and reduction device according to claim 1, wherein A second solenoid valve is provided below the reduction cavity.

7. The sample mixing and splitting device according to claim 1, characterized in that, The mixing unit includes a mixing chamber and a first rotation driving mechanism connected to the mixing chamber.

8. The sample mixing and reduction device according to claim 7, characterized in that, The mixing chamber includes at least two feeding cavities and a mixing cavity arranged below the feeding cavities; The first rotation driving mechanism includes a first rotating shaft and a first driving assembly; the first rotating shaft is arranged between the mixing chamber and the support frame; a bearing is provided between the first rotating shaft and the support frame; the first driving assembly includes a first driving motor, a first driving wheel and a first driven wheel; the first driving motor is arranged on the support frame, the first driving wheel is connected to the output shaft of the first driving motor, and the first driven wheel is sleeved on the first rotating shaft and is meshed and connected with the first driving wheel.

9. The sample mixing and reduction device according to claim 8, wherein, A first solenoid valve for controlling the automatic opening and closing of the discharge port of the mixing cavity is provided at the discharge port end of the mixing cavity.

10. A control method for the sample mixing and reduction device according to any one of claims 1-9, characterized in that, It includes the following steps: Add the raw materials to be mixed into the mixing unit, and after being mixed by the mixing unit, place them into the material receiving cavity of the reduction unit; When n = 1, the mixed materials uniformly enter m reduction cavities from the material receiving cavity, and m evenly divided materials are obtained after discharging. When n≥2, after discharging m - 1 evenly divided materials, the second rotation drive mechanism drives the quartering chamber to flip for one cycle, discharges m - 1 evenly divided materials again, and repeats the flipping and discharging steps until the quartered material of 1 / m is obtained. n quartered material.

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