A terahertz spectroscopy measurement device

Abstract

The utility model discloses a kind of for terahertz spectroscopy measuring equipment, including base, movable block, fixed plate, laser emission end and laser receiving end, base is equipped with movable groove, movable block is located in movable groove, fixed plate is located on movable block, fixed plate is equipped with multiple measuring port and is used for placing sample tablet placing groove, measuring port is penetrated in placing groove;Base side is equipped with mounting bracket respectively, laser emission end and laser receiving end are respectively located on the mounting bracket of base side;Fixed plate bottom is equipped with lifting assembly, lifting assembly can drive fixed plate to move upwards relative to movable block;The height of the tablet of the application can be adjusted so that laser emission end and sample alignment facilitate to measure multiple samples to improve the application range of equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of terahertz spectral measurement equipment, and in particular relates to a terahertz spectral measurement equipment. Background Technology

[0002] Terahertz radiation is electromagnetic radiation with frequencies between 0.1 THz and 10 THz (1 THz = 10¹² Hz), corresponding to wavelengths of 30 nm to 3 mm. It belongs to the far-infrared band and lies precisely in the transition region between electronics and photonics. Electromagnetic waves in this frequency band are called millimeter waves or submillimeter waves in electronics, and far-infrared radiation in spectroscopy.

[0003] Currently, terahertz spectroscopy is increasingly widely used in various fields, including agriculture, astronomy, colorimetry, environmental monitoring, semiconductor industry, and component analysis. The widespread application of terahertz spectroscopy is inseparable from the preliminary research in spectroscopic experiments. Studies have found that terahertz waves have a strong absorption characteristic of moisture and are highly sensitive. Nitrogen gas is usually required for purging during experiments. To avoid wasting nitrogen, the sample clamping area for terahertz experiments should not be too large, and the structure should be relatively simple; the sample box should not be removed and replaced too frequently.

[0004] Chinese utility model patent CN206399827U discloses a sample pressing support device and a terahertz spectroscopy measurement system incorporating the device. The sample pressing support device includes a pressing fixing component, a driving component, and a control component. The pressing fixing component simultaneously fixes multiple sample pressings. The control component is connected to the pressing fixing component via the driving component, controlling the horizontal movement of the pressing fixing component by controlling the rotational angular displacement of the driving component. This effectively improves the accuracy of continuous measurement and automatic focusing of the sample pressings, enhancing the accuracy of experimental results. Furthermore, this device is suitable for pressings of different strengths and thicknesses, allowing for continuous measurement of sample pressings in groups, which effectively improves experimental efficiency. Especially in terahertz experiments, it significantly reduces nitrogen consumption and saves costs. In addition, the control component enables remote control, preventing researchers from directly contacting harmful samples and avoiding potential health risks.

[0005] However, due to the different sizes of the sample pellets, some pellets placed in the fixed groove cannot be aligned with the laser emitter, making it impossible to measure the samples, and the device has low adaptability. Utility Model Content

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] In order to overcome the shortcomings of the prior art, this utility model provides a device for terahertz spectroscopy measurement.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a terahertz spectroscopy measurement device, comprising a base, a movable block, a fixed plate, a laser emitting end, and a laser receiving end. The base is provided with a movable groove, the movable block is disposed in the movable groove, and the fixed plate is disposed on the movable block. The fixed plate is provided with multiple measurement ports and a placement groove for placing sample pellets, the measurement ports passing through the placement groove. Mounting brackets are provided on both sides of the base, and the laser emitting end and the laser receiving end are respectively disposed on the mounting brackets on both sides of the base. A lifting assembly is provided at the bottom of the fixed plate, which can drive the fixed plate to move upward relative to the movable block.

[0009] Furthermore, the bottom of the movable slot is provided with a guide rail, the movable block is provided with a guide groove corresponding to the guide rail, and one end of the base is provided with an electric push rod that drives the movable block to move in the movable slot.

[0010] Furthermore, the lifting assembly includes a first threaded rod located at the bottom of the fixed plate and a nut fitted onto the first threaded rod; the bottom of the fixed plate is also provided with a guide rod, and the bottom of the movable block is provided with a groove, in which the guide rod and the first threaded rod pass through the groove, and the nut is rotatably connected to the top of the groove.

[0011] Furthermore, the nut is provided with a connecting rod, the connecting rod is provided with a transmission wheel, and the groove is provided with a transmission block that drives the transmission wheel; the transmission block is provided with a sliding rod, and the top of the groove is provided with a first sliding groove for the sliding rod to move.

[0012] Furthermore, the piston rod of the electric actuator is provided with a mounting plate, the mounting plate is provided with a push block, the push block is provided with a first connecting block, the movable block is provided with a first movable groove corresponding to the mounting plate, and the top of the first movable groove is provided with a first connecting groove corresponding to the first connecting block.

[0013] Furthermore, a second connecting block is provided on the side wall of the push block, and a second connecting groove corresponding to the second connecting block is provided on the transmission block.

[0014] Furthermore, the push block is provided with a first slider, and the mounting plate is provided with a second slide groove for the first slider to move. The bottom of the slide groove is provided with a spring and an electromagnet, and the first slider is made of ferromagnetic metal.

[0015] Furthermore, a pressure plate is provided on the inner wall of the placement groove, and a support plate is provided at the bottom. The pressure plate and the support plate can move within the placement groove.

[0016] Furthermore, the side wall of the placement groove is provided with a threaded hole, and a second threaded rod is rotatably connected to the pressure plate, the second threaded rod passing through the threaded hole; a second slider is provided on the side wall of the pressure plate, and a third slide groove is provided on the side wall of the placement groove for the second slider to move.

[0017] Furthermore, a second movable groove is provided on the side wall of the placement groove, and a fixing rod is provided on the support plate. The fixing rod extends out from the second movable groove and is made of elastic material.

[0018] The advantages of this invention are: it provides a terahertz spectroscopy measurement device that can adjust the height of the compressed tablet to align the laser emitter with the sample, facilitating the measurement of various samples and improving adaptability. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0020] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0021] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a terahertz spectroscopy measurement device according to one embodiment of the present invention.

[0022] Figure 2 for Figure 1 Enlarged view of point A in the image.

[0023] Figure 3 for Figure 1 A cross-sectional view of the mounting plate for a terahertz spectroscopy measurement device in the illustrated embodiment.

[0024] Figure 4 for Figure 3 Enlarged view of point B in the image.

[0025] Figure 5 for Figure 3 Enlarged view of point C in the image.

[0026] Figure 6 for Figure 1 A cross-sectional view of the mounting plate for a terahertz spectroscopy measurement device in the illustrated embodiment.

[0027] Figure 7 for Figure 6 Enlarged view of point D in the image.

[0028] Figure 8 for Figure 1 A cross-sectional view of the placement slot for the terahertz spectroscopy measurement device in the illustrated embodiment.

[0029] Figure 9 for Figure 8 Enlarged view of point E in the image.

[0030] The meanings of the reference numerals in the figure are as follows: 101. Base; 102. Movable block; 103. Fixed plate; 104. Mounting bracket; 105. Laser emitter; 106. Laser receiver; 107. Electric actuator; 108. Guide rail; 109. Measuring port; 110. Second threaded rod; 111. Fixed rod; 112. Light-transmitting hole; 113. Guide rod; 114. First threaded rod; 115. Nut; 116. Connecting rod; 117. Transmission wheel; 118. Mounting plate; 119. Push block; 120. Transmission block; 121. First connecting block; 122. Second connecting block; 124. First slider; 125. Spring; 126. Electromagnet; 127. Placement slot; 128. Pressure plate; 129. Second slider; 130. Third slide groove; 131. Support plate. Detailed Implementation

[0031] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0032] It should also be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0033] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0034] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0035] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0036] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] like Figure 1-9As shown, a terahertz spectroscopy measurement device includes a base 101, a movable block 102, a fixed plate 103, a laser emitting end 105, and a laser receiving end 106. The base 101 has a movable groove, the movable block 102 is disposed within the movable groove, and the fixed plate 103 is disposed on the movable block 102. The fixed plate 103 has multiple measurement ports 109 and a placement groove 127 for placing sample pellets, with the measurement ports 109 penetrating through the placement groove 127. Mounting brackets 104 are respectively provided on both sides of the base 101, and the laser emitting end 105 and the laser receiving end 106 are respectively disposed on the mounting brackets 104 on both sides of the base 101. The laser receiver 106 is positioned opposite to the laser emitter 105, and the measurement port 109 is aligned with the laser emitter 105. The bottom of the fixed plate 103 is equipped with a lifting assembly, which can drive the fixed plate 103 to move upward relative to the movable block 102. By using the lifting assembly, the height of the sample pressing plate on the fixed plate 103 can be easily adjusted, so that even when measuring small samples, the sample can be aligned with the measurement port 109, which is convenient for measuring samples of various sizes and improves the applicability of the equipment. Through the setting of multiple placement slots 127 and measurement ports 109, the equipment can measure multiple samples at the same time, improving the sample measurement efficiency.

[0038] Preferably, a plurality of light-transmitting holes 112 are provided on the fixed plate 103, the number of light-transmitting holes 112 corresponding to the number of measuring ports 109, and the position of the terahertz measuring device in the terahertz measuring system is corresponding to the position of the laser beam, so that when the laser beam passes through any light-transmitting hole 112, the measuring angle of the terahertz measuring device is precisely focused with the position of the measuring port 109.

[0039] Furthermore, the bottom of the movable slot is provided with a guide rail 108, the movable block 102 is provided with a guide groove corresponding to the guide rail 108, and one end of the base 101 is provided with an electric push rod 107 that drives the movable block 102 to move in the movable slot.

[0040] By setting the electric actuator 107, the movable block 102 can be driven to move in the movable slot, thereby adjusting the position of the fixed plate 103 so that the multiple measuring ports 109 on the fixed plate 103 are aligned with the laser emitting end 105 in sequence, thereby enabling multiple samples to be measured at one time and improving the ease of use of the equipment.

[0041] Furthermore, the lifting assembly includes a first threaded rod 114 located at the bottom of the fixed plate 103 and a nut 115 sleeved on the first threaded rod 114; the bottom of the fixed plate 103 is also provided with a guide rod 113, the bottom of the movable block 102 is provided with a groove, the guide rod 113 and the first threaded rod 114 pass through the groove, and the nut 115 is rotatably connected to the top of the groove.

[0042] The guide rod 113 guides the fixing plate 103, ensuring it remains horizontal during lifting and lowering, thus preventing tilting and guaranteeing the accuracy of sample measurements. When adjusting the height of the fixing plate 103, the nut 115 can be rotated, moving it along the first threaded rod 114. Since the nut 115 is rotatably connected to the bottom of the fixing plate 103, and the first threaded rod 114 passes through a groove, the movement of the nut 115 causes the fixing plate 103 to rise and fall, thereby adjusting the sample tablet height.

[0043] The nut 115 is provided with a connecting rod 116, the connecting rod 116 is provided with a transmission wheel 117, and the groove is provided with a transmission block 120 that is in transmission cooperation with the transmission wheel 117; the transmission block 120 is provided with a sliding rod, and the top of the groove is provided with a first sliding groove for the sliding rod to move.

[0044] The transmission block 120 slides along the top of the groove via the movement of the slide rod within the first groove, thus achieving transmission engagement with the transmission wheel 117. When the transmission wheel 117 rotates, it drives the nut 115 to rotate via the connecting rod 116, thereby adjusting the position of the nut 115 on the first threaded rod 114 and achieving precise adjustment of the height of the fixed plate 103. This design not only improves the convenience of adjustment but also ensures the stability and accuracy of the adjustment process.

[0045] Furthermore, the piston rod of the electric actuator 107 is provided with a mounting plate 118, the mounting plate 118 is provided with a push block 119, the push block 119 is provided with a first connecting block 121, the movable block 102 is provided with a first movable groove corresponding to the mounting plate 118, the top of the first movable groove is provided with a first connecting groove corresponding to the first connecting block 121, the first movable groove is provided to provide clearance space for the movement of the mounting plate 118, when the mounting plate 118 moves relative to the movable block 102, the mounting plate 118 moves within the first movable groove.

[0046] The push block 119 has a second connecting block 122 on its side wall, and the transmission block 120 has a second connecting groove corresponding to the second connecting block 122.

[0047] The push block 119 is provided with a first slider 124, and the mounting plate 118 is provided with a second slide groove for the first slider 124 to move. The bottom of the slide groove is provided with a spring 125 and an electromagnet 126. The first slider 124 is made of ferromagnetic metal, preferably iron alloy.

[0048] When the movable block 102 needs to be moved, the electromagnet 126 is de-energized, the spring 125 returns to its original state, the first slider 124 is at the top of the second groove, the first connecting block 121 is inserted into the first connecting groove, and the push block 119 is connected to the movable block 102 through the cooperation of the first connecting block 121 and the first connecting groove. At this time, the movable block 102 can be moved by the electric push rod 107. When the height of the fixed plate 103 needs to be changed, the electromagnet 126 is energized and will generate an attraction force on the first slider 124, causing the first slider 124 to move along the second groove towards the electromagnet 126, thereby driving the push block 119 and the first connecting block 121 to move. This causes the first connecting block 121 to disengage from the first connecting groove, and the second connecting block 122 to insert into the second connecting groove, realizing the connection between the transmission block 120 and the push block 119. This allows the electric push rod 107 to drive the transmission block 120 to move independently when driving the push block 119, thereby adjusting the height of the fixed plate 103. By using the combination of electromagnet 126 and spring 125, it is possible to easily control the connection between push block 119 and movable block 102 or transmission block 120, thereby facilitating the adjustment of the sample position.

[0049] Furthermore, a pressure plate 128 is provided on the inner wall of the placement groove 127, and a support plate 131 is provided at the bottom. The pressure plate 128 and the support plate 131 can move within the placement groove 127.

[0050] The side wall of the placement groove 127 is provided with a threaded hole, and a second threaded rod 110 is rotatably connected to the pressure plate 128. The second threaded rod 110 passes through the threaded hole. A second slider 129 is provided on the side wall of the pressure plate 128, and a third slide groove 130 is provided on the side wall of the placement groove 127 for the second slider 129 to move.

[0051] The side wall of the placement groove 127 is provided with a second movable groove, and the support plate 131 is provided with a fixing rod 111. The fixing rod 111 extends out of the second movable groove and is made of elastic material, preferably plastic. The fixing rod 111 abuts against the inner wall of the second movable groove to fix the support plate 131, ensuring that the support plate 131 provides good support for the pressing.

[0052] The pressure plate 128 and support plate 131 secure the sample tablet within the placement slot 127, preventing shaking during measurement and ensuring accurate results. When the sample tablet needs to be secured, the second threaded rod 110 can be rotated. Since the second threaded rod 110 passes through a threaded hole, its rotation moves the pressure plate 128 until it presses the sample tablet firmly. At this point, the second slider 129 moves within the third sliding groove 130, guiding the movement of the pressure plate 128 and allowing for the use of sample tablets of different thicknesses. Simultaneously, the support plate 131 moves within the second movable slot via the fixing rod 111, supporting the bottom of the sample tablet and improving its stability. Because the fixing rod 111 is made of elastic material, pressing it allows it to move within the second movable slot, adjusting the height of the support plate 131 to accommodate sample tablets of different sizes and improve the device's adaptability. This design not only improves the ease of sample pressing and fixation, but also ensures the stability and accuracy of the measurement process.

[0053] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in the embodiments of this disclosure is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A terahertz spectroscopy measurement device, comprising a base, a movable block, a fixed plate, a laser emitting end, and a laser receiving end, wherein the base has a movable groove, the movable block is disposed within the movable groove, the fixed plate is disposed on the movable block, the fixed plate has multiple measurement ports and a placement groove for placing sample pellets, the measurement ports passing through the placement groove; mounting brackets are respectively provided on both sides of the base, and the laser emitting end and the laser receiving end are respectively disposed on the mounting brackets on both sides of the base; characterized in that: The bottom of the fixed plate is provided with a lifting component, which can drive the fixed plate to move upward relative to the movable block.

2. The terahertz spectroscopy measurement device according to claim 1, characterized in that: The bottom of the movable slot is provided with a guide rail, the movable block is provided with a guide groove corresponding to the guide rail, and one end of the base is provided with an electric push rod that drives the movable block to move within the movable slot.

3. The terahertz spectroscopy measurement device according to claim 2, characterized in that: The lifting assembly includes a first threaded rod located at the bottom of the fixed plate and a nut sleeved on the first threaded rod; the bottom of the fixed plate is also provided with a guide rod, the bottom of the movable block is provided with a groove, the guide rod and the first threaded rod pass through the groove, and the nut is rotatably connected to the top of the groove.

4. The terahertz spectroscopy measurement device according to claim 3, characterized in that: The nut is provided with a connecting rod, the connecting rod is provided with a transmission wheel, and the groove is provided with a transmission block that drives the transmission wheel; the transmission block is provided with a sliding rod, and the top of the groove is provided with a first sliding groove for the sliding rod to move.

5. The terahertz spectroscopy measurement device according to claim 4, characterized in that: The piston rod of the electric actuator is provided with a mounting plate, the mounting plate is provided with a push block, the push block is provided with a first connecting block, the movable block is provided with a first movable groove corresponding to the mounting plate, and the top of the first movable groove is provided with a first connecting groove corresponding to the first connecting block.

6. The terahertz spectroscopy measurement device according to claim 5, characterized in that: The push block has a second connecting block on its side wall, and the transmission block has a second connecting groove corresponding to the second connecting block.

7. The terahertz spectroscopy measurement device according to claim 6, characterized in that: The push block is provided with a first slider, and the mounting plate is provided with a second slide groove for the first slider to move. The bottom of the slide groove is provided with a spring and an electromagnet, and the first slider is made of ferromagnetic metal.

8. The terahertz spectroscopy measurement device according to claim 1, characterized in that: The inner wall of the placement groove is provided with a pressure plate, and the bottom is provided with a support plate. The pressure plate and the support plate can move within the placement groove.

9. The terahertz spectroscopy measurement device according to claim 8, characterized in that: The placement groove has a threaded hole on its side wall, and a second threaded rod is rotatably connected to the pressure plate, the second threaded rod passing through the threaded hole; the pressure plate has a second slider on its side wall, and the placement groove has a third slide groove for the second slider to move.

10. The terahertz spectroscopy measurement device according to claim 8, characterized in that: The placement slot has a second movable slot on its side wall, and the support plate has a fixing rod that extends out of the second movable slot. The fixing rod is made of an elastic material.

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