Conveyor sorting device for sample combination and batch normalization

Abstract

The present invention discloses a conveying and sorting device for sample combination and batch normalization, which includes a control unit and a transmission rack. A plurality of rollers are arranged on the transmission rack, and a roller transmission line capable of forward and reverse transmission is formed to transmit sample barrels; a plurality of lifting and limiting mechanisms are arranged on the transmission rack and can protrude upward from the gaps between adjacent rollers. The plurality of lifting and limiting mechanisms are arranged in two parallel columns along the transmission direction; a plurality of double-sided hook barrel mechanisms are arranged along the transmission direction on the transmission rack. The present invention has the advantages of simple and compact structure, small floor area, high degree of automation and intelligence, greatly improving work efficiency, and high reliability.

Description

Technical Field

[0001] The present invention mainly relates to the field of sampling, preparation and analysis equipment for material samples, and particularly relates to a conveying and sorting device for sample combination and batch classification. Background Art

[0002] For the sampling, preparation and analysis work of materials (such as ores and coal), each country has mandatory standards, and the sampling, sample preparation and analysis work must be carried out in accordance with the standards. Taking the analysis of coal as an example, the criterion for the process of sampling, sample preparation and analysis is to gradually reduce the particle size and quality of the collected samples without damaging the representativeness of the samples until the particle size and quality (weight) accuracy requirements for laboratory tests are met, and then conduct relevant test analysis on the samples that meet the requirements. There should be no loss of samples and no physical or chemical changes to the samples during this process, otherwise it will affect the final test results.

[0003] Currently, there are increasing requirements for the integrated operation of sampling and sample preparation and the integrated system of sampling and sample preparation, such as the operation of sample combination and batch classification. The so-called sample combination and batch classification means that at the front end of the sampling and sample preparation operation, multiple batches of different coal samples are prepared and put into sample buckets, and each batch of coal sample buckets also has a certain quantity, and the coal samples will be confused during the production and transportation process. This makes it necessary to first gather and combine these coal samples of different batches, different quantities and disordered orders into the same batch at the back end of the sampling and sample preparation operation, and then centrally complete the sampling and sample preparation operation for each same batch.

[0004] For example: Some existing sample combination and batch classification systems are equipped with parallel temporary storage transfer lines, sample preparation transfer lines and transfer transfer lines; some are equipped with parallel temporary storage transfer lines, non-current sample transfer lines, empty bucket transfer lines and sample preparation transfer lines; and some are equipped with parallel vertically arranged empty bucket conveyor belts, sample preparation conveyor belts and batch classification circulating conveyor belts. The following technical problems exist:

[0005] First, setting up so many transfer lines is huge in volume and occupies a large area, which is not suitable for flexible industrial placement and use. Especially if multi-batch sample combination and batch classification operations are to be realized, in order to meet the circular batch classification cycle, the system will inevitably become more huge and complex. Second, the function of each transfer line is too single. During the process of sample combination and batch classification of sample buckets, the sample buckets need to circulate many times on several conveying mechanisms, and the circulating transportation of sample buckets takes a long time, the batch classification time is long, the batch classification rhythm is slow, and the work efficiency is low. Third, the number of times of reading and writing cards for sample buckets is large and sorting is difficult. Each time, all the stored sample buckets need to be read card by card before the required batch of sample buckets can be selected, resulting in reduced reliability. Summary of the Invention

[0006] The technical problem solved by the present invention is: aiming at the problems existing in the prior art, to provide a conveying and sorting device for sample combination and batch classification, which has a simple and compact structure, small floor area, high degree of automation and intelligence, can greatly improve work efficiency, and has high reliability.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A conveying and sorting device for sample combination and batch classification includes a control unit and a transmission rack. A plurality of rollers are provided on the transmission rack to form a roller transmission line capable of forward and reverse transmission for transmitting sample barrels. A plurality of lifting and limiting mechanisms are provided on the transmission rack, which can protrude upward from the gaps between adjacent rollers. The plurality of lifting and limiting mechanisms are arranged in two parallel columns along the transmission direction to divide the roller transmission line into a first temporary storage sample transmission channel, a current sample transmission channel, and a second temporary storage sample transmission channel in sequence from left to right when lifted. The first temporary storage sample transmission channel and the second temporary storage sample transmission channel are used to temporarily store the sample barrels to be processed transmitted from external devices or the empty sample barrels after sample preparation. A plurality of double-sided hook barrel mechanisms are arranged on the transmission rack along the transmission direction. During operation, under the control instruction of the control unit, the plurality of lifting and limiting mechanisms descend so that the double-sided hook barrel mechanisms can hook the sample barrels of the same batch on the first temporary storage sample transmission channel and / or the second temporary storage sample transmission channel to the current sample transmission channel, and then the plurality of lifting and limiting mechanisms rise to facilitate the roller transmission line to forwardly transmit the sample barrels to be processed of the same batch on the current sample transmission channel for sample preparation / or reverse transmit the empty sample barrels of the same batch.

[0009] As a further improvement of the present invention, a blocking barrel mechanism that can protrude upward from the gaps between adjacent rollers is provided at the transmission rear ends of the first temporary storage sample transmission channel and the second temporary storage sample transmission channel on the transmission rack. When the roller transmission line forwardly transmits the sample barrels to be processed of the same batch on the current sample transmission channel for sample preparation, the two blocking barrel mechanisms protrude to prevent the sample barrels on the first temporary storage sample transmission channel and the second temporary storage sample transmission channel from being forwardly transmitted.

[0010] As a further improvement of the present invention, a blocking barrel mechanism that can protrude upward from the gaps between adjacent rollers is also provided at the transmission front ends of the first temporary storage sample transmission channel and the second temporary storage sample transmission channel on the transmission rack. When the roller transmission line reverse transmits the empty sample barrels of the same batch on the current sample transmission channel, the two blocking barrel mechanisms protrude to prevent the sample barrels on the first temporary storage sample transmission channel and the second temporary storage sample transmission channel from being reverse transmitted.

[0011] As a further improvement of the present invention, a blocking barrel mechanism that can protrude upward from the gaps between adjacent rollers is also provided at the transmission front end and the transmission rear end of the current sample transmission channel on the transmission rack to limit the transmission of the sample barrels on the current sample transmission channel at the protruding positions.

[0012] As a further improvement of the present invention, the barrel blocking mechanism includes a first cylinder and a barrel blocking plate disposed below the roller, for intercepting by driving the barrel blocking plate to extend upward from the gap between the rollers under the drive of the first cylinder.

[0013] As a further improvement of the present invention, the lifting limit mechanism includes a mounting base, a limit guide rail and a second cylinder disposed below the roller. The limit guide rail and the second cylinder are vertically fixed on the transmission frame. The mounting base is simultaneously connected to the limit guide rail and the second cylinder for driving the mounting base to lift along the limit guide rail through the second cylinder. A plurality of limit frames arranged along the transmission direction are mounted on the mounting base, and each of the limit frames can extend upward from the gap between adjacent rollers.

[0014] As a further improvement of the present invention, the double-sided barrel hooking mechanism includes a mounting bracket disposed below the roller. The mounting bracket is fixed on the transmission frame along the axial direction of the roller. A limit slide rail and a driving assembly are arranged along the axial direction on the mounting bracket. A barrel hooking bent plate extending upward from the gap between adjacent rollers is provided at each end of the mounting bracket, and both of the barrel hooking bent plates are connected to the limit slide rail and the driving assembly.

[0015] As a further improvement of the present invention, two position detectors are further provided on the mounting bracket. The position detectors are communicatively connected to the driving assembly for controlling the moving stroke of the barrel hooking bent plate.

[0016] As a further improvement of the present invention, a double-sided barrel hooking mechanism is provided at each sample barrel bearing position corresponding to the first temporary sample transmission channel on the transmission frame.

[0017] As a further improvement of the present invention, a plurality of double-sided barrel hooking mechanisms arranged along the transmission direction on the transmission frame are arranged at intervals, and a sample barrel bearing position is spaced between adjacent two double-sided barrel hooking mechanisms.

[0018] Compared with the prior art, the advantages of the present invention are as follows:

[0019] First, the conveying and sorting device for sample combination and batch return of the present invention has a compact and simple structure. Only one set of transmission line can complete the collection of sample barrels to be processed, the combination and batch return conveying of sample barrels in different batches, and the collection conveying of empty sample barrels. It has a small volume and a small floor area, and is suitable for flexible industrial placement and use.

[0020] Second, the conveying and sorting device for sample combination and batch return of the present invention no longer uses circular transmission for batch return. The method of hooking and sorting is fast, accurate and simple. The batch return time of the sample barrel is short, the batch return rhythm is fast, and the work efficiency is high.

[0021] Third, the conveying and sorting device for sample batching of the present invention eliminates the need for multiple card reading and writing of sample barrels. The external device only needs to read the card once, and the conveying and sorting device can subsequently select the required batches of sample barrels, with high reliability and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structural principle of the conveying and sorting device for sample collection and preparation of the present invention when it is empty.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structural principle of the conveying and sorting device for sample collection and preparation of the present invention when carrying a sample barrel.

[0024] Figure 3 It is a schematic diagram of the top view of the structural principle of the conveying and sorting device for sample collection and preparation of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structural principle of the lifting and limiting mechanism of the present invention.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structural principle of the double-sided hook-barrel mechanism of the present invention.

[0027] Legend:

[0028] 1. Transfer rack; 11. First temporary sample transfer channel; 12. Current sample transfer channel; 13. Second temporary sample transfer channel; 2. Roller; 3. Lifting and limiting mechanism; 31. Mounting seat; 32. Limiting guide rail; 33. Second cylinder; 34. Limiting rack; 4. Double-sided hook barrel mechanism; 41. Mounting bracket; 42. Limiting slide rail; 43. Drive assembly; 44. Hook barrel bending plate; 45. Position detector; 5. Barrel blocking mechanism; 9. Sample barrel. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] like Figures 1 to 5As shown in the figure, the present invention provides a conveying and sorting device for sample combination and batch classification, including a control unit (not shown in the figure) and a transmission rack 1. The transmission rack 1 is provided with a plurality of leg assemblies for support (clearly shown in the figure but not numbered). A plurality of rollers 2 are arranged on the transmission rack 1 to form a roller transmission line capable of forward and reverse transmission for transmitting sample barrels 9; a plurality of lifting and limiting mechanisms 3 are arranged on the transmission rack 1 and can protrude upward from the gaps between adjacent rollers 2. The plurality of lifting and limiting mechanisms 3 are arranged in two parallel columns along the transmission direction to divide the roller transmission line into a first temporary sample transmission channel 11, a current sample transmission channel 12, and a second temporary sample transmission channel 13 in sequence from left to right when lifted. The first temporary sample transmission channel 11 and the second temporary sample transmission channel 13 are used to temporarily store the sample barrels 9 to be processed transmitted from external devices or the empty sample barrels 9 after sample preparation; a plurality of double-sided hook barrel mechanisms 4 are arranged on the transmission rack 1 along the transmission direction; during operation, under the control instruction of the control unit, the plurality of lifting and limiting mechanisms 3 descend so that the double-sided hook barrel mechanisms 4 can hook the sample barrels 9 of the same batch on the first temporary sample transmission channel 11 and / or the second temporary sample transmission channel 13 to the current sample transmission channel 12, and then the plurality of lifting and limiting mechanisms 3 rise so that the roller transmission line can forwardly transmit the sample barrels 9 to be processed of the same batch on the current sample transmission channel 12 for sample preparation / or reversely transmit the empty sample barrels 9 of the same batch. The specific implementation principle is as follows:

[0031] It should be noted that the following descriptions of directions are all based on the directions shown in the figures for the convenience of understanding, rather than limitations on the technical solutions. In this embodiment, the conveying and sorting device of the present invention is connected between the transfer cart and the sample preparation device. During operation, it is assumed that the cart transports the sample buckets 9 of three batches E, F, and G, and the multiple sample buckets 9 of each batch are randomly and chaotically arranged. After the cart is docked with the conveying and sorting device, the multiple lifting and limiting mechanisms 3 rise, dividing the roller transmission line into a first temporary sample transmission channel 11, a current sample transmission channel 12, and a second temporary sample transmission channel 13 from left to right in sequence. Then the cart transports the multiple chaotically arranged sample buckets 9 onto the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13. During transmission, due to the rise of the multiple lifting and limiting mechanisms 3 to form isolation and limitation, the sample buckets 9 on the two channels of the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13 can be normally conveyed in sequence. In this embodiment, a code reading mechanism is provided on the cart, and this code reading mechanism is communicatively connected to the control unit of the present invention. Each time the cart outputs a sample bucket 9, the information on the lid of the sample bucket 9 (prior art) is read, the sample bucket 9 is numbered, and the information is transmitted to the control unit. For example, the first output is recorded as bucket No. 1 of batch E and is the first one on the first temporary sample transmission channel 11, the second output is recorded as bucket No. 1 of batch F and is the second one on the first temporary sample transmission channel 11, and so on. In short, the control unit can know the positions of all the sample buckets 9 of any batch on the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13. Of course, in other embodiments, a code reading mechanism can also be set between the cart and the conveying and sorting device of the present invention for reading, or a code reading mechanism can be directly set at the front end of the conveying and sorting device of the present invention. This is not a limitation of this application, as long as the control unit can receive all the data.

[0032] After all the samples are completely transferred, the sample combining and batch - returning operation starts. Multiple lifting and limiting mechanisms 3 descend, and then the control unit issues a control instruction to the double - side hook - bucket mechanism 4 to hook all the sample buckets 9 of batch E on the first temporary sample transfer channel 11 and / or the second temporary sample transfer channel 13 to the current sample transfer channel 12 in the middle. At this time, the sorting and sample combining and batch - returning of all the sample buckets 9 of batch E are completed. Then, the multiple lifting and limiting mechanisms 3 are raised to form a limiting channel. At this time, the roller conveyor line forwards the sample buckets 9 of the same batch on the current sample transfer channel 12 to the sample preparation equipment for sample preparation. Subsequently, the sample combining and batch - returning and transfer of batches F and G can be carried out. The first temporary sample transfer channel 11 and the second temporary sample transfer channel 13 can also be used to temporarily store the empty sample buckets 9 after sample preparation. After the sample preparation is completed, the empty sample buckets 9 are transferred in the reverse direction and all are transferred to the trolley. In the above description, when the roller conveyor line forwards the sample buckets 9 of batch E on the current sample transfer channel 12 to the sample preparation equipment, there are multiple ways to prevent the sample buckets 9 of other batches on the first temporary sample transfer channel 11 and the second temporary sample transfer channel 13 from being forwarded: First, multiple rollers 2 on the transfer rack 1 operate independently. For example, when the multiple rollers 2 on the current sample transfer channel 12 operate, the multiple rollers 2 on the first temporary sample transfer channel 11 and the second temporary sample transfer channel 13 do not operate. Second, the rollers 2 on the first temporary sample transfer channel 11, the current sample transfer channel 12, and the second temporary sample transfer channel 13 run together. However, as described below, at the transmission rear ends of the first temporary sample transfer channel 11 and the second temporary sample transfer channel 13 on the transfer rack 1, there is a bucket - blocking mechanism 5 that can protrude upward from the gap between adjacent rollers 2. When the current sample transfer channel 12 is transmitting, the bucket - blocking mechanism 5 blocks the first sample bucket 9 on the first temporary sample transfer channel 11 and the second temporary sample transfer channel 13, so that the first sample bucket 9 and all subsequent sample buckets 9 will not continue to be forwarded forward. Only in this process, the sample buckets 9 of subsequent batches F and G may move and change positions (because there are empty spaces after the sample buckets 9 of batch E are hooked out on the first temporary sample transfer channel 11 and the second temporary sample transfer channel 13). However, at this time, the control unit controls through an algorithm and has recalculated the new positions of the sample buckets 9 of batches F and G after the position change. When the next batch - F sample combining is carried out, all the sample buckets 9 of batch F after the change can be accurately hooked again.

[0033] Through the above - mentioned special scientific design, it has the following technical advantages:

[0034] First, the conveying and sorting device for sample combining and batch - returning of the present invention has a compact and simple structure. Only one set of conveyor line can complete the collection of sample buckets 9 to be prepared, the sample combining, batch - returning and conveying of sample buckets 9 of different batches, and the collection and conveying of empty sample buckets 9. It is small in size and occupies a small area, and is suitable for flexible industrial placement and use.

[0035] Second, the conveying and sorting device for sample combination and batch classification of the present invention no longer uses circular transmission for batch classification. The method of hooking and sorting is fast, accurate, and simple. The batch classification time of the sample buckets is short, the batch classification rhythm is fast, and the work efficiency is high.

[0036] Third, the conveying and sorting device for sample combination and batch classification of the present invention eliminates the multiple card readings and writings of the sample bucket 9. The external device only needs to read the card once, and then this conveying and sorting device can select the required batch of sample buckets 9 subsequently, with high reliability and high attention efficiency.

[0037] Furthermore, in a preferred embodiment, a bucket blocking mechanism 5 that can protrude upward from the gap between adjacent rollers 2 is provided at the transmission rear ends of the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13 on the transmission rack 1. When the roller transmission line is transmitting the same batch of sample buckets 9 to be processed on the current sample transmission channel 12 forward for sample preparation, the two bucket blocking mechanisms 5 protrude to prevent the sample buckets 9 on the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13 from being transmitted forward. That is to say, the rollers 2 of the first temporary sample transmission channel 11, the current sample transmission channel 12, and the second temporary sample transmission channel 13 of the present invention are co-linear, which greatly reduces the manufacturing cost and control cost of the equipment. When the trolley transports all the sample buckets 9 to be processed to the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13, the two bucket blocking mechanisms 5 will rise to block the first sample bucket 9 to be processed on the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13, and finally all the sample buckets 9 to be processed are gathered on the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13. As described above, when the current sample transmission channel 12 is transmitting, the bucket blocking mechanism 5 will also block the first sample bucket 9 on the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13. When it is necessary to transport the empty buckets to the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13, the two bucket blocking mechanisms 5 will lower.

[0038] Furthermore, in a preferred embodiment, a bucket blocking mechanism 5 that can protrude upward from the gap between adjacent rollers 2 is also provided at the transmission front ends of the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13 on the transmission rack 1. When the roller transmission line is transmitting the same batch of empty sample buckets 9 on the current sample transmission channel 12 in the reverse direction, the two bucket blocking mechanisms 5 protrude to prevent the sample buckets 9 on the first temporary sample transmission channel 11 and the second temporary sample transmission channel 13 from being transmitted in the reverse direction.

[0039] Further, in a preferred embodiment, a bucket blocking mechanism 5 that can protrude upward from the gap between adjacent rollers 2 is also provided at the front end and the rear end of the current sample transfer channel 12 on the transfer rack 1, for limiting the transfer of the sample bucket 9 on the current sample transfer channel 12 at the protruding position. When multiple sample buckets 9 of this batch retrieved by the hook are carried on the current sample transfer channel 12, these sample buckets 9 are not closely adjacent to each other. For the convenience of the continuity of subsequent sample preparation operations, at this time, the bucket blocking mechanism 5 at the rear end of the current sample transfer channel 12 is raised, and then the current sample transfer channel 12 starts to transfer. The first sample bucket 9 will be blocked by this bucket blocking mechanism 5, and then the subsequent sample buckets 9 continue to transfer until they are closely adjacent to each other in a row. Then the bucket blocking mechanism 5 is lowered, and the sample preparation operation starts again.

[0040] Further, in a preferred embodiment, the bucket blocking mechanism 5 includes a first air cylinder and a bucket blocking plate arranged below the roller 2, for making the bucket blocking plate protrude upward from the gap between the rollers 2 under the drive of the first air cylinder for interception. This design does not occupy space and has a simple and compact structure.

[0041] Further, in a preferred embodiment, the lifting and limiting mechanism 3 includes a mounting base 31, a limiting guide rail 32 and a second air cylinder 33 arranged below the roller 2. The limiting guide rail 32 and the second air cylinder 33 are vertically fixed on the transfer rack 1. The mounting base 31 is simultaneously connected to the limiting guide rail 32 and the second air cylinder 33 for driving the mounting base 31 to lift along the limiting guide rail 32 through the second air cylinder 33. A plurality of limiting frames 34 arranged along the transfer direction are installed on the mounting base 31, and each limiting frame 34 can protrude upward from the gap between adjacent rollers 2. When separation and limitation are required, the second air cylinder 33 drives the mounting base 31 to move upward, so that a plurality of limiting frames 34 protrude from the gap between adjacent rollers 2, thereby forming a limitation.

[0042] Further, in a preferred embodiment, the double-sided bucket hooking mechanism 4 includes a mounting bracket 41 arranged below the roller 2. The mounting bracket 41 is fixed on the transfer rack 1 along the axial direction of the roller 2. A limiting slide rail 42 and a driving assembly 43 are arranged along the axial direction on the mounting bracket 41. A bucket hooking bent plate 44 that protrudes upward from the gap between adjacent rollers 2 is provided at both ends of the mounting bracket 41, and both bucket hooking bent plates 44 are connected to the limiting slide rail 42 and the driving assembly 43. When hooking is not required, the bucket hooking bent plates 44 retract to both sides of the roller transfer line, so as not to form an obstacle to the sample buckets 9 transferred on the first temporary sample transfer channel 11 and the second temporary sample transfer channel 13. When hooking is required, the driving assembly 43 drives the corresponding bucket hooking bent plate 44 to run towards the current sample transfer channel 12, and hooks the sample bucket 9 originally on the first temporary sample transfer channel 11 or the second temporary sample transfer channel 13 to the current sample transfer channel 12.

[0043] Further, in a preferred embodiment, two position detectors 45 are also provided on the mounting bracket 41. The position detectors 45 are communicatively connected to the driving assembly 43 to control the moving stroke of the hook bucket bent plate 44, making the movement safe and reliable.

[0044] Regarding the arrangement of the double-sided hook bucket mechanism 4, there are two different implementation manners:

[0045] Implementation manner 1: In this embodiment, a double-sided hook bucket mechanism 4 is provided at each sample bucket carrying position corresponding to the first temporary sample transmission channel 11 on the transmission rack 1.

[0046] Implementation manner 2: In this preferred embodiment, a plurality of double-sided hook bucket mechanisms 4 arranged along the transmission direction on the transmission rack 1 are spaced apart, and there is a sample bucket carrying position between two adjacent double-sided hook bucket mechanisms 4. This enables the reduction of the arrangement quantity of the double-sided hook bucket mechanisms 4, that is, reduces the equipment weight and manufacturing cost. When there is exactly no double-sided hook bucket mechanism 4 at the sample bucket carrying position where a certain sample bucket 9 on the first temporary sample transmission channel 11 or the second temporary sample transmission channel 13 is located, the first temporary sample transmission channel 11 or the second temporary sample transmission channel 13 transports forward by a sample bucket distance, transports the sample bucket 9 to the previous sample bucket carrying position with a double-sided hook bucket mechanism 4, and then hooks it. At this time, the positions of other sample buckets 9 on the first temporary sample transmission channel 11 or the second temporary sample transmission channel 13 have changed. When the control unit controls through an algorithm at this time, it has recalculated the new positions of the other sample buckets 9 after the position change. When combining samples in the next batch, it can accurately hook the sample buckets 9 after the change again.

[0047] The above are only the preferred implementation manners of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A conveying and sorting device for sample combination and batch normalization, characterized in that, It includes a control unit and a transfer rack (1). Multiple rollers (2) are provided on the transfer rack (1) to form a roller transfer line capable of forward and reverse transfer for transferring sample barrels (9). Multiple lifting and limiting mechanisms (3) that can protrude upward from the gaps between adjacent rollers (2) are provided on the transfer rack (1). The multiple lifting and limiting mechanisms (3) are arranged in two parallel columns along the transfer direction to divide the roller transfer line into a first temporary sample transfer channel (11), a current sample transfer channel (12), and a second temporary sample transfer channel (13) in sequence from left to right when lifted. The first temporary sample transfer channel (11) and the second temporary sample transfer channel (13) are used to temporarily store the sample barrels (9) to be sampled transferred from external devices or the empty sample barrels (9) after sampling. Multiple double-sided hook barrel mechanisms (4) are provided on the transfer rack (1) along the transfer direction. During operation, under the control instruction of the control unit, the multiple lifting and limiting mechanisms (3) descend so that the double-sided hook barrel mechanisms (4) can hook the sample barrels (9) of the same batch on the first temporary sample transfer channel (11) and / or the second temporary sample transfer channel (13) to the current sample transfer channel (12), and then the multiple lifting and limiting mechanisms (3) rise to facilitate the roller transfer line to forwardly transfer the sample barrels (9) to be sampled of the same batch on the current sample transfer channel (12) for sampling / or reverse transfer the empty sample barrels (9) of the same batch. The lifting and limiting mechanism (3) includes a mounting base (31), a limiting guide rail (32), and a second cylinder (33) arranged below the roller (2). The double-sided hook barrel mechanism (4) includes a mounting bracket (41) arranged below the roller (2).

2. The conveying and sorting device for sample combination and batch return according to claim 1, characterized in that, A blocking barrel mechanism (5) that can protrude upward from the gap between adjacent rollers (2) is provided at the transfer rear end of both the first temporary sample transfer channel (11) and the second temporary sample transfer channel (13) on the transfer rack (1). When the roller transfer line forwardly transfers the sample barrels (9) to be sampled of the same batch on the current sample transfer channel (12) for sampling, the two blocking barrel mechanisms (5) protrude to prevent the sample barrels (9) on the first temporary sample transfer channel (11) and the second temporary sample transfer channel (13) from being forwardly transferred.

3. The conveying and sorting device for sample combination and batch return according to claim 2, wherein, A blocking barrel mechanism (5) that can protrude upward from the gap between adjacent rollers (2) is also provided at the transfer front end of both the first temporary sample transfer channel (11) and the second temporary sample transfer channel (13) on the transfer rack (1). When the roller transfer line reverse transfers the empty sample barrels (9) of the same batch on the current sample transfer channel (12), the two blocking barrel mechanisms (5) protrude to prevent the sample barrels (9) on the first temporary sample transfer channel (11) and the second temporary sample transfer channel (13) from being reverse transferred.

4. The conveying and sorting device for sample combination and batch return according to claim 3, characterized in that, A blocking barrel mechanism (5) that can protrude upward from the gap between adjacent rollers (2) is also provided at the transfer front end and the transfer rear end of the current sample transfer channel (12) on the transfer rack (1) to limit the transfer of the sample barrels (9) on the current sample transfer channel (12) when protruding.

5. The conveying and sorting device for sample combination and batch normalization according to claim 2, wherein, The barrel blocking mechanism (5) includes a first air cylinder and a barrel blocking plate disposed below the roller (2) for intercepting by driving the barrel blocking plate to extend upward from the gap of the roller (2) under the drive of the first air cylinder.

6. The conveying and sorting device for sample combination and batch return according to claim 1, characterized in that, The limit guide rail (32) and the second air cylinder (33) are vertically fixed on the transmission rack (1). The mounting seat (31) is connected to both the limit guide rail (32) and the second air cylinder (33) at the same time for driving the mounting seat (31) to move up and down along the limit guide rail (32) by the second air cylinder (33). A plurality of limit frames (34) arranged along the transmission direction are mounted on the mounting seat (31), and each of the limit frames (34) can extend upward from the gap between adjacent rollers (2).

7. The conveying and sorting device for sample combination and batch normalization according to claim 1, characterized in that, The mounting bracket (41) is fixed on the transmission rack (1) along the axial direction of the roller (2). A limit slide rail (42) and a driving assembly (43) are arranged along the axial direction on the mounting bracket (41). A hook barrel bent plate (44) that extends upward from the gap between adjacent rollers (2) is provided at each end of the mounting bracket (41). Both of the hook barrel bent plates (44) are connected to the limit slide rail (42) and the driving assembly (43).

8. The conveying and sorting device for sample combination and batch normalization according to claim 7, characterized in that, Two position detectors (45) are further provided on the mounting bracket (41). The position detectors (45) are communicatively connected to the driving assembly (43) for controlling the moving stroke of the hook barrel bent plate (44).

9. The conveying and sorting device for sample combination and batch return according to claim 1, wherein A double-sided hook barrel mechanism (4) is provided at each sample barrel bearing position corresponding to the first temporary storage sample transmission channel (11) on the transmission rack (1).

10. The conveying and sorting device for sample combination and batch return according to claim 1, wherein, A plurality of double-sided hook barrel mechanisms (4) arranged along the transmission direction on the transmission rack (1) are spaced apart. There is a sample barrel bearing position between adjacent two double-sided hook barrel mechanisms (4).

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