A rotating multi-sample detection assembly for terahertz spectroscopy

Abstract

The present application relates to a kind of rotating multi-sample detection components of terahertz spectroscopy, including sample placement turntable, turntable motor, screw rod lifting turnover device, suction system and component base;Turntable motor timing drive sample placement turntable rotation, so that THz detection device can collect different sample tank sample data.Suction system can be realized by generating negative pressure and hot air and cooperating with screw rod lifting turnover device respectively air suction type sample turning and air drying sample.Compared with prior art, the present application provides support for single multi-efficient detection.At the same time, the present application can meet the specific needs of sample turning, sample drying, etc., avoid repeated experimental operation, shorten experimental time, and greatly improve the THz detection experimental efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to a rotating multi-sample detection assembly of terahertz spectrum, and belongs to the technical field of terahertz spectrum detection. BACKGROUND

[0002] Terahertz (THz) is a new type of important cross-frontier technology with many outstanding advantages. Its wave band is in the intermediate region between macroscopic electronics and microscopic photonics, so that the spectrum of this wave band can detect physical information and chemical information of matter, and can detect amplitude information and phase information. THz also has many characteristics such as fingerprint absorption, penetration, coherence, transient state and low ionization damage. With the development of ultra-short pulse lasers, the detection capability of THz is further improved. Therefore, in recent years, THz has been widely used in the fields of agricultural product detection, biomedical medicine, safety inspection, etc.

[0003] At present, the THz detection technology mainly detects the transmission or reflection of the pressed sample, but the existing THz spectrum detection device can only collect data of a single sample at a time. However, in order to ensure the reliability of the data, manual sample turning is usually required, and the spectrum data of different points is measured multiple times. At the same time, in order to avoid the influence of air water molecules on the THz detection results, dry nitrogen is needed to fill the sample bin to make the air humidity less than 5% during sample detection. Therefore, to complete the data collection of a sample, the above tedious process needs to be repeated manually, which seriously affects the experimental efficiency.

[0004] In view of the deficiency that the existing THz spectrum detection device can only collect data of a single sample at a time, it is of practical significance to explore a multi-sample detection assembly with multiple functions such as sample turning and sample drying. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a rotating multi-sample detection assembly of terahertz spectrum, which can overcome the problem that the existing THz spectrum detection device can only collect data of a single sample at a time, and manual sample turning, sample drying pretreatment and other complicated manual operations are required, and the THz spectrum detection efficiency is low. The present application can turn the sample by machine and dry the sample, thereby improving the THz detection experimental efficiency.

[0006] The technical scheme of the present application is: a rotating multi-sample detection assembly of terahertz spectrum, comprising a sample placing turntable 3, a turntable motor 2, a screw rod lifting and turning device, a suction system and an assembly base 1. The turntable motor 2 drives the sample placing turntable 3 to rotate at regular time, so that the THz detection device can collect sample data in different sample grooves 4. The suction system can realize air suction type sample turning and air blowing type sample drying by generating negative pressure and hot air in cooperation with the screw rod lifting and turning device.

[0007] All devices are integrated in the upper assembly base 1, the center of the base is installed with a turntable motor 2, eight sample slots 4 are arranged on the sample placing turntable 3, the turntable motor 2 is fixed on the assembly base 1 and located directly below the sample placing turntable 3, the rotating shaft of the turntable motor 2 is connected with the sample placing turntable 3; the sample placing turntable 3 is driven to rotate regularly by the turntable motor 2, and eight sample data can be collected in a single experiment.

[0008] The screw rod lifting and overturning device comprises a screw rod lifting device base 5, a screw rod motor 6, a screw rod 7, a lower limit switch 8, an upper limit switch 9, a lifting platform 10, an overturning motor 11, a driving wheel 12, a transmission belt 13, a driven wheel 14, a copper nut 27 and a shaft coupling 29; the screw rod lifting device base 5 is fixed on the assembly base 1, the screw rod lifting device base 5 is fixedly installed with the screw rod motor 6, the screw rod motor 6 is connected with the screw rod 7, the upper limit switch 9 and the lower limit switch 8 are respectively arranged on the vertical back plate of the screw rod lifting device base 5 and located at the upper and lower ends of the screw rod 7, the screw rod 7 is installed with the copper nut 27 engaged with the screw rod thread, the copper nut 27 is fixedly installed with the lifting platform 10 through the fastening screw 28, the overturning motor 11 is fixed on the lifting platform 10, the overturning motor 11 is connected with the driving wheel 12, the driving wheel 12 is connected with the driven wheel 14 through the transmission belt 13, the air rod 24 is fixed on the lifting platform 10 through the shaft coupling 29, and the air rod 24 passes through the center of the driven wheel 14 in the lifting platform 10 and is welded with the driven wheel 14 as a whole; the screw rod motor 6 fixed on the screw rod lifting device base 5 drives the screw rod 7 to rotate, the rotation of the screw rod 7 drives the copper nut 27 engaged with the screw rod thread to move up and down in the radial direction, thereby driving the lifting platform 10 fixed with the copper nut 27 to lift between the upper and lower limit switches, the overturning motor 11 fixed on the lifting platform 10 drives the driving wheel 12 to rotate, the driving wheel 12 drives the driven wheel 14 through the transmission belt 13, thereby driving the driven wheel 14 and the air rod 24 to overturn;

[0009] The air suction system comprises an air suction device 15, an air suction pipe 16, an electromagnetic valve II 17, an air blowing device 18, an air blowing pipe 19, a graphene electric heating film 20, an electromagnetic valve I 21, a main air pipe 22, a rotary joint 23, an air rod 24, an air rod fixing device 25 and an air suction head 26;

[0010] The air suction device 15 and the air blowing device 18 are fixed on the assembly base 1 and connected with the air suction pipe 16 and the air blowing pipe 19 respectively, the electromagnetic valve II 17 and the electromagnetic valve I 21 are arranged on the air suction pipe 16 and the air blowing pipe 19 respectively to control the on-off, and the graphene electric heating film 20 is arranged in the air blowing pipe 19, the air suction pipe 16 and the air blowing pipe 19 converge to the main air pipe 22, the main air pipe 22 is connected with the air rod 24 through the rotary joint 23, the rotary joint 23 is used to prevent the air rod 24 from causing the twist of the main air pipe 22 when the air rod 24 is turned with the driven wheel 14, the air rod 24 passes through the hole of the air rod fixing device 25 in sequence and is welded and fixed with the hole, so that the air suction head 26 at the end of the air rod 24 is perpendicular to the center of the sample groove 4. Wherein, the air suction device 15 and the air blowing device 18 converge to the main air pipe 22 through the air suction pipe 16 and the air blowing pipe 19 respectively, the main air pipe 22 is communicated with the air rod 24 through the rotary joint 23, the air rod 24 is fixed by the air rod fixing device 25, and the air suction head 26 is perpendicular to the center of the sample groove 4.

[0011] Further, the hollow diameter of the sample groove 4 is 8mm, so that the air rod 24 and the air rod fixing device 25 can pass through the hollow position to ascend and descend, and the sample groove 4 can place the sample piece of 10-15mm.

[0012] Further, the rotary joint 23 between the main air pipe 22 and the air rod 24 is connected in sequence by the SNS NRC series straight-through rotary joint, the main air pipe 22 is connected with the SNS NRC series straight-through rotary joint in the form of a sleeve, and the air rod 24 is connected with the SNS NRC series straight-through rotary joint in the form of screw thread engagement, so that the air rod 24 does not cause the twist of the main air pipe 22 when the air rod 24 is turned with the driven wheel 14.

[0013] If the measured sample needs to be dried, the air blowing device 18 starts to work, the electromagnetic valve II 17 is turned off, the electromagnetic valve I 21 is turned on, and the graphene electric heating film 20 arranged in the air blowing pipe 19 is powered on to heat, hot air passes through the air blowing pipe 19, the main air pipe 22 and the air rod 24 in sequence, and blows the sample in the sample groove 4 below through the air suction head 26, and the sample drying in all sample grooves 4 is realized by the cooperation of the timing rotation of the sample placing turntable 3.

[0014] Further, the air suction head 26 is made of soft silica gel material, which can protect the fragile sample when sucking the sample.

[0015] Further, the hole of the air rod fixing device 25 has four holes, the air rod 24 passes through the first hole horizontally and then passes through the second hole vertically upward, and then passes through the third and fourth holes vertically downward in sequence after U-shaped rotation.

[0016] Further, the suction system is used to realize sample drying, when the air blowing device 18 works, the electromagnetic valve II 17 is closed, the electromagnetic valve I 21 is opened, and the graphene electric heating film 20 arranged in the air blowing pipe 19 is powered to heat, hot air passes through the air blowing pipe 19, the main air pipe 22 and the air rod 24 in turn, and blows the sample in the sample groove 4 below to realize sample drying in all sample grooves 4 by cooperating with the timing rotation of the sample placing disc 3.

[0017] The working principle of the present application is as follows:

[0018] If the sample to be measured needs sample drying pretreatment, the air blowing device 18 starts to work, the graphene electric heating film 20 in the air blowing pipe 19 is powered to heat, hot air passes through the air blowing pipe 19, the main air pipe 22 and the air rod 24 in turn, and blows the sample in the sample groove 4 below to realize sample drying in all sample grooves 4 by cooperating with the timing rotation of the sample placing disc 3, and then the THz detection device collects sample data in different sample grooves 4 in turn by cooperating with the timing rotation of the sample placing disc 3.

[0019] If the sample to be measured needs sample front and back data collection, the suction device 15 starts to work to generate negative pressure, the sample in the sample groove 4 is adsorbed by the suction head 26 at the end of the air rod 24, then the driving motor 11 fixed on the lifting platform 10 drives the driving wheel 12 to rotate, the driving wheel 12 drives the driven wheel 14 through the transmission belt 13, so as to drive the air rod 24 fixed at the center of the driven wheel 14 and the sample adsorbed by the suction head 26 to rotate 180° together, the screw lifting device drives the lifting platform 10 to descend to the lower limit switch 8, the suction device 15 stops working, the sample is placed in the sample groove 4 from the air rod 24, and the rotation of a single sample is completed; when the sample placing disc 3 rotates to the next sample groove 4, the suction device 15 starts to work to generate negative pressure, the screw device drives the lifting platform 10 to move upward, the air rod 24 carried by the lifting platform 10 is adsorbed by the sample in the sample groove 4 to rise to the upper limit switch 9, the driving motor 11 fixed on the lifting platform 10 drives the air rod 24 and the sample adsorbed by the suction head 26 to rotate 180°, the suction device 15 stops working, so that the sample is placed in the sample groove 4 from the suction head 26, and the rotation of the second sample is completed, and the above steps are repeated to complete the rotation of all samples in the sample groove 4.

[0020] The present application has the following beneficial effects:

[0021] 1. The measuring mode adopts a rotating disc type sample placing disc to replace the existing single sample groove scheme, and through the timed rotation of the sample placing disc, multiple sample data can be collected without repeatedly opening and closing the sample bin for sample replacement, thereby improving the THz experimental sample detection efficiency.

[0022] 2. The negative pressure generated by the suction system is used to suck the sample in the sample groove by the suction head, and the sample is turned over by the screw rod lifting and overturning device, so that the front and back data of the same sample are collected without manually turning over the sample in the sample bin, thereby ensuring the diversity and reliability of the data.

[0023] 3. The hot air generated by the suction system is used to realize the air blowing type drying of the sample, so that the interference of the sample moisture on the THz detection data can be eliminated, and the graphene electric heating film is used for heating, the graphene electric heating film has good stability, the temperature surface is balanced and easy to control, and the destruction of the sample itself molecular structure information caused by the excessively high temperature can be avoided. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic view of the whole structure of the embodiment of the present application;

[0025] Figure 2 is a side view of the structure of the embodiment of the present application;

[0026] Figure 3 is a top view of the structure of the embodiment of the present application;

[0027] Figure 4 is a size drawing of the sample groove of the present application;

[0028] Figure 5 is a schematic view of the installation and connection of the lifting platform of the present application;

[0029] Figure 6 is a schematic view of the connection of the air rod to the lifting platform of the present application;

[0030] Figure 7 is a gas path connection relationship diagram of the suction system of the embodiment of the present application;

[0031] Figure 8 is a side cut surface view of the arrangement of the graphene electric heating film in the air blowing pipe of the present application;

[0032] Figures 1-8The following are the labels for each component: 1-Component base, 2-Turntable motor, 3-Sample placement turntable, 4-Sample slot, 5-Screw lifting device base, 6-Screw motor, 7-Screw, 8-Lower limit switch, 9-Upper limit switch, 10-Lifting platform, 11-Tilting motor, 12-Drive wheel, 13-Transmission belt, 14-Driven wheel, 15-Air suction device, 16-Air suction pipe, 17-Solenoid valve II, 18-Blower device, 19-Blower pipe, 20-Graphene electric heating film, 21-Solenoid valve I, 22-Main air pipe, 23-Rotary joint, 24-Air rod, 25-Air rod fixing device, 26-Air suction head, 27-Copper nut, 28-Fasting screw, 29-Coupling. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] Example: Figures 1-8 As shown, a rotary multi-sample detection assembly for terahertz spectroscopy includes a sample placement turntable 3, a turntable motor 2, a lead screw lifting and tilting device, a suction system, and an assembly base 1. The turntable motor 2 drives the sample placement turntable 3 to rotate at regular intervals, enabling the THz detection device to collect sample data from different sample slots 4. The suction system generates negative pressure and hot air, and in conjunction with the lead screw lifting and tilting device, it can achieve both air suction-type sample turning and blower-type sample drying.

[0035] All devices are integrated on the top of the component base 1. A turntable motor 2 is installed in the center of the base. Eight sample slots 4 are arranged on the sample placement turntable 3. The turntable motor 2 is fixed on the component base 1 and located directly below the sample placement turntable 3. The rotating shaft of the turntable motor 2 is connected to the sample placement turntable 3. The sample placement turntable 3 is driven by the turntable motor 2 to rotate at regular intervals. Data from eight samples can be collected in a single experiment.

[0036] The screw rod lifting and overturning device comprises a screw rod lifting device base 5, a screw rod motor 6, a screw rod 7, a lower limit switch 8, an upper limit switch 9, a lifting platform 10, an overturning motor 11, a driving wheel 12, a transmission belt 13, a driven wheel 14, a copper nut 27 and a shaft coupling 29; the screw rod lifting device base 5 is fixed on the assembly base 1, the screw rod motor 6 is fixedly installed on the screw rod lifting device base 5, the screw rod motor 6 is connected with the screw rod 7, the upper limit switch 9 and the lower limit switch 8 are arranged on the vertical back plate of the screw rod lifting device base 5 and located at the upper and lower ends of the screw rod 7, the copper nut 27 which is engaged with the screw thread of the screw rod 7 is installed on the screw rod 7, the copper nut 27 is fixedly installed on the lifting platform 10 through the fastening screw 28, the overturning motor 11 is fixed on the lifting platform 10, the overturning motor 11 is connected with the driving wheel 12, the driving wheel 12 is connected with the driven wheel 14 through the transmission belt 13, the air rod 24 is fixed on the lifting platform 10 through the shaft coupling 29, and the air rod 24 passes through the center of the driven wheel 14 in the lifting platform 10 and is welded with the driven wheel 14 as a whole; the screw rod motor 6 fixed on the screw rod lifting device base 5 drives the screw rod 7 to rotate, the rotation of the screw rod 7 drives the copper nut 27 engaged with the screw thread of the screw rod 7 to move up and down in the radial direction, thereby driving the lifting platform 10 fixed with the copper nut 27 to lift between the upper and lower limit switches, the overturning motor 11 fixed on the lifting platform 10 drives the driving wheel 12 to rotate, the driving wheel 12 drives the driven wheel 14 through the transmission belt 13, thereby driving the driven wheel 14 and the air rod 24 to overturn;

[0037] The air suction system comprises an air suction device 15, an air suction pipe 16, an electromagnetic valve II 17, an air blowing device 18, an air blowing pipe 19, a graphene electric heating film 20, an electromagnetic valve I 21, a main air pipe 22, a rotary joint 23, an air rod 24, an air rod fixing device 25 and an air suction head 26.

[0038] As shown in Figure 7 and Figure 8 The air suction device 15 and the air blowing device 18 are fixed on the assembly base 1 and connected with the air suction pipe 16 and the air blowing pipe 19 respectively, the electromagnetic valve II 17 and the electromagnetic valve I 21 are arranged on the air suction pipe 16 and the air blowing pipe 19 respectively to control the on-off, the graphene electric heating film 20 is arranged in the air blowing pipe 19, the air suction pipe 16 and the air blowing pipe 19 converge to the main air pipe 22, the main air pipe 22 is connected with the air rod 24 through the rotary joint 23, the rotary joint 23 is used to prevent the main air pipe 22 from being twisted when the air rod 24 overturns with the driven wheel 14, the air rod 24 passes through the hole of the air rod fixing device 25 in sequence and is welded with the hole to be fixed, so that the air suction head 26 at the end of the air rod 24 is perpendicular to the center of the sample groove 4.

[0039] As shown in Figure 7As shown, the air suction device 15 and the blower device 18 are respectively connected to the main air pipe 22 through the air suction pipe 16 and the blower pipe 19. The main air pipe 22 is connected to the air rod 24 through the rotary joint 23. When the air rod 24 is rotated with the driven wheel 14, it will not cause the main air pipe 22 to twist or get tangled. The air rod 24 is fixed by the air rod fixing device 25, and the air suction head 26 is perpendicular to the center of the sample tank 4.

[0040] like Figure 7 , Figure 8 As shown, the air suction pipe 16 and the blower pipe 19 are respectively equipped with solenoid valve II 17 and solenoid valve I 21, and a graphene electric heating film 20 is arranged inside the blower pipe 19. When the blower device 18 starts working, solenoid valve II 17 is closed and solenoid valve I 21 is opened, and the graphene electric heating film 20 arranged inside the blower pipe 19 is energized and heated; when the air suction device 15 starts working, solenoid valve I 21 is closed and solenoid valve II 17 is opened, and the graphene electric heating film 20 arranged inside the blower pipe 19 is energized and heated.

[0041] Furthermore, the hollow diameter of the sample slot 4 is 8mm to facilitate the air rod 24 and the air rod fixing device 25 to move up and down from the hollow position, and the sample slot 4 can hold sample pieces of 10-15mm.

[0042] Furthermore, such as Figure 8 As shown, the rotary joint 23 between the main air pipe 22 and the air rod 24 is connected by an SNS NRC series straight rotary joint. The main air pipe 22 is connected to the SNS NRC series straight rotary joint with a compression fitting interface, and the air rod 24 is connected to the SNS NRC series straight rotary joint with a threaded engagement. The use of the SNS NRC series straight rotary joint ensures that when the air rod 24 rotates with the driven wheel 14, it will not cause the main air pipe 22 to twist.

[0043] Furthermore, the air suction head 26 is made of soft silicone, which can protect fragile samples when suctioning them.

[0044] Furthermore, the gas rod fixing device 25 has four channels. The gas rod 24 passes horizontally through the first channel, then vertically upwards through the second channel, and after a U-shaped turn, it passes vertically downwards through the third and fourth channels in sequence.

[0045] Furthermore, the blower system is used to dry the samples. When the blower device 18 is working, the solenoid valve II 17 is closed and the solenoid valve I 21 is opened. At the same time, the graphene electric heating film 20 arranged in the blower pipe 19 is energized and heated. The hot air passes through the blower pipe 19, the main air pipe 22, and the air rod 24 in sequence, and blows the sample in the sample slot 4 directly below through the air suction head 26. With the timed rotation of the sample placement turntable 3, the samples in all sample slots 4 are dried.

[0046] Further, the screw rod lifting and overturning device cooperates with the suction system to realize sample overturning; the initial state of the detection assembly device is that the lifting platform 10 is located at the highest position of the screw rod 7, that is, at the upper limit switch 9, and the end suction head 26 of the air rod 24 is vertically downward and directly opposite the center of the sample groove 4; if the sample to be measured needs to collect data of the front and back surfaces of the sample, the air suction device 15 starts to work to generate negative pressure, the sample in the sample groove 4 is adsorbed by the suction head 26 on the air rod 24, the driving wheel 12 is driven to rotate by the overturning motor 11, the driving wheel 12 drives the driven wheel 14 and the air rod 24 to rotate through the transmission belt 13; when the air rod 24 rotates by 180°, at this time, the suction head is vertically upward, the overturning motor 11 stops working, the screw rod motor 6 starts to work to drive the screw rod 7 to rotate reversely, so that the copper nut 27 engaged with the screw thread of the screw rod 7 and the lifting platform 10 move downward along the screw rod 7 until the lifting platform 10 contacts the lower limit switch 8, the screw rod motor 6 stops working, the air suction device 15 stops working, the sample is placed in the sample groove 4 from the air rod 24, and the overturning of a single sample is completed; when the sample placing turntable 3 rotates to the next sample groove 4, the air suction device 15 starts to work to generate negative pressure, the screw rod motor 6 works to drive the screw rod 7 to rotate forwardly, so that the copper nut 27 engaged with the screw thread of the screw rod 7 and the lifting platform 10 move upward along the screw rod 7, the air rod 7 is adsorbed by the suction head 26 to ascend with the sample when passing through the sample groove 4 upwardly, until the lifting platform 10 contacts the upper limit switch 9, the screw rod motor 7 stops working, the driving wheel 12 is driven to rotate by the overturning motor 11, the driving wheel 12 drives the driven wheel 14 and the air rod 24 to rotate through the transmission belt 13; when the air rod 24 rotates by 180°, at this time, the suction head is vertically downward, the overturning motor 11 stops working, the air suction device 15 stops working, so that the sample is detached from the suction head 26 and placed in the sample groove 4, and the overturning of the second sample is completed, and the above steps are repeated to complete the overturning of all samples in the sample groove 4.

[0047] In summary, the application discloses a rotating multi-sample detection assembly for terahertz spectrum, a sample placing turntable 3 with a plurality of sample grooves 4 is driven to rotate by a motor, so that the THz detector can collect sample data in multiple ways at a time. In view of the drying pretreatment requirement of part of the samples, air blowing device 18, graphene electric heating film 20, air rod 24 and other components are used to cooperate with the rotation of the sample placing turntable 3 to realize the drying of all samples in the sample placing turntable 3. In view of the problems of sample data collection diversity and reliability, manual overturning is often required for manual sample data collection. The application combines a screw rod lifting and overturning device and a suction system, adopts air suction to realize sample adsorption and overturning, cooperates with the rotation of the sample placing turntable 3 to realize the overturning and measurement of all samples in the sample placing turntable 3. The application overcomes the problems that the existing THz spectrum detection device can only collect sample data in single way at a time, manual overturning, sample drying pretreatment and other complicated manual operations are required, solves the problem of low THz spectrum detection efficiency, and greatly improves the THz sample detection efficiency.

[0048] The application has been described in detail with reference to specific embodiments in conjunction with the accompanying drawings, but the application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the application.

Claims

1. A rotating multi-sample detection component for terahertz spectroscopy, characterized in that: It includes a sample turntable (3), a turntable motor (2), a screw lifting and turning device, a suction system, and a component base (1). The sample placement turntable (3) is provided with several sample slots (4). The turntable motor (2) is fixed on the component base (1) and located directly below the sample placement turntable (3). The rotating shaft of the turntable motor (2) is connected to the sample placement turntable (3). The screw lifting and tilting device includes a screw lifting device base (5), a screw motor (6), a screw (7), a lower limit switch (8), an upper limit switch (9), a lifting platform (10), a tilting motor (11), a drive wheel (12), a transmission belt (13), a driven wheel (14), a copper nut (27), and a coupling (29). The screw lifting device base (5) is fixed on the component base (1). The screw motor (6) is fixedly installed on the screw lifting device base (5). The screw motor (6) is connected to the screw (7). The upper limit switch (9) and the lower limit switch (8) are respectively provided on the vertical back plate of the screw lifting device base (5) at the upper and lower ends of the screw (7). The screw (7) is fitted with a copper nut (27) that engages with the screw thread. The copper nut (27) is fixedly installed on the lifting platform (10) by fastening screws (28). The tilting motor (11) is fixed on the lifting platform (10). 1) The flip motor (11) is connected to the drive wheel (12), and the drive wheel (12) is connected to the driven wheel (14) through the transmission belt (13). The air rod (24) is fixed to the lifting platform (10) by the coupling (29), and the air rod (24) passes through the center of the driven wheel (14) in the lifting platform (10) and is welded to the driven wheel (14) as a whole. The screw motor (6) fixed on the base (5) of the screw lifting device drives the screw (7) to rotate. The rotation of the lead screw (7) causes the copper nut (27) that is engaged with the lead screw thread to move radially up and down, thereby driving the lifting platform (10) fixed to the copper nut (27) to move up and down between the upper and lower limit switches. The flip motor (11) fixed on the lifting platform (10) drives the drive wheel (12) to rotate. The drive wheel (12) drives the driven wheel (14) through the transmission belt (13), thereby driving the driven wheel (14) and the air rod (24) to flip. The suction system includes a suction device (15), a suction pipe (16), a solenoid valve II (17), a blower (18), a blower pipe (19), a graphene electric heating film (20), a solenoid valve I (21), a main air pipe (22), a rotary joint (23), an air rod (24), an air rod fixing device (25), and a suction head (26). The suction device (15) and the blower device (18) are fixed on the component base (1) and connected to the suction pipe (16) and the blower pipe (19) respectively. The suction pipe (16) and the blower pipe (19) are respectively equipped with solenoid valve II (17) and solenoid valve I (21) to control the on and off. At the same time, a graphene electrothermal film (20) is arranged in the blower pipe (19). The suction pipe (16) and the blower pipe (19) converge into the main air pipe (22). The main air pipe (22) is connected to the air rod (24) through a rotary joint (23). This rotary joint (23) is used to prevent the main air pipe (22) from twisting when the air rod (24) is rotated with the driven wheel (14). The air rod (24) passes through the hole of the air rod fixing device (25) in sequence and is welded and fixed to the hole, so that the suction head (26) at the end of the air rod (24) is perpendicular to the center of the sample cell (4).

2. The rotating multi-sample detection component for terahertz spectroscopy according to claim 1, characterized in that: The hollow diameter of the sample slot (4) is 8mm so that the air rod (24) and the air rod fixing device (25) can shuttle and rise from the hollow position. The sample slot (4) can hold a sample piece of 10~15mm.

3. The rotating multi-sample detection component for terahertz spectroscopy according to claim 1, characterized in that, The rotary joint (23) between the main air pipe (22) and the air rod (24) is connected by an SNS NRC series straight rotary joint. The main air pipe (22) is connected to the SNS NRC series straight rotary joint with a compression fitting interface. The air rod (24) is connected to the SNS NRC series straight rotary joint with a threaded engagement. The use of the SNS NRC series straight rotary joint ensures that when the air rod (24) rotates with the driven wheel (14), the main air pipe (22) will not be twisted.

4. The rotating multi-sample detection component for terahertz spectroscopy according to claim 1, characterized in that: The air suction head (26) is made of soft silicone, which can protect fragile samples when suctioning them.

5. The rotating multi-sample detection component for terahertz spectroscopy according to claim 1, characterized in that: The gas rod fixing device (25) has four channels. The gas rod (24) passes horizontally through the first channel and then vertically upward through the second channel. After a U-shaped turn, it passes vertically downward through the third and fourth channels in sequence.

6. The rotating multi-sample detection component for terahertz spectroscopy according to claim 1, characterized in that: The blower system is used to dry the samples. When the blower (18) is working, the solenoid valve II (17) is closed and the solenoid valve I (21) is opened. At the same time, the graphene electric heating film (20) arranged in the blower pipe (19) is heated by electricity. The hot air passes through the blower pipe (19), the main air pipe (22), and the air rod (24) in sequence. The air suction head (26) blows the sample in the sample slot (4) directly below. With the timed rotation of the sample turntable (3), the samples in all sample slots (4) are dried.

7. The rotating multi-sample detection component for terahertz spectroscopy according to claim 1, characterized in that: The screw lifting and flipping device, in conjunction with the suction system, is used to flip the sample. The initial state of the detection assembly is that the lifting platform (10) is located at the highest point of the screw (7), i.e., at the upper limit switch (9). The suction head (26) at the end of the air rod (24) is vertically downwards, directly facing the center of the sample slot (4). If the sample to be tested requires data acquisition from both the front and back sides, the suction device (15) starts working to generate negative pressure. The sample in the sample slot (4) is adsorbed by the suction head (26) on the air rod (24). The flipping motor (11) drives the drive wheel (12) to rotate. (12) The driven wheel (14) and the air rod (24) are driven to rotate by the transmission belt (13); when the air rod (24) rotates 180°, the air suction head (26) is vertically upward, the flip motor (11) stops working, the lead screw motor (6) starts working, and drives the lead screw (7) to rotate in the opposite direction, so that the copper nut (27) that is engaged with the lead screw thread moves downward along the lead screw (7) together with the lifting platform (10) until the lifting platform (10) contacts the lower limit switch (8), the lead screw motor (6) stops working, the air suction device (15) stops working, and the sample is removed from the lower limit switch. The air rod (24) is gently placed into the sample slot (4) to complete the flipping of a single sample; when the sample placement turntable (3) rotates to the next sample slot (4), the air suction device (15) starts to work to generate negative pressure, and the lead screw motor (6) works to drive the lead screw (7) to rotate in the forward direction, so that the copper nut (27) that is engaged with the lead screw thread moves upward along the lead screw (7) together with the lifting platform (10). When the air rod (24) passes through the sample slot (4) upward, it is adsorbed by the air suction head (26) and rises together until the lifting platform (10) contacts the upper limit switch (9), and the lead screw... When the motor (6) stops working, the flipping motor (11) starts working, driving the drive wheel (12) to rotate. The drive wheel (12) drives the driven wheel (14) and the air rod (24) to rotate through the transmission belt (13). When the air rod (24) rotates 180°, the air suction head (26) is vertically downward. The flipping motor (11) stops working, and the air suction device (15) stops working. Thus, the sample is desorbed from the air suction head (26) and placed in the sample slot (4), completing the flipping of the second sample. Then, the above steps are repeated to complete the flipping of all samples in the sample slot (4).

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