Propyl gallate Raman spectrum detection device

Abstract

The invention belongs to the technical field of Raman spectrum detection, and particularly relates to a propyl gallate Raman spectrum detection device which comprises a supporting plate, vibration cup boxes are symmetrically and fixedly mounted at the top of the supporting plate, a rectangular box is fixedly mounted between the tops of the two vibration cup boxes, a liquid containing cup is fixedly mounted on one side of the top of the supporting plate and used for containing a liquid sample, and the liquid containing cup is used for containing the liquid sample. The two cup vibrating boxes are arranged on the two sides of the liquid containing cup. When a pressing block moves downwards, the pressing block extrudes and pushes ladder blocks to move, when the pressing block is not in contact with the ladder blocks, a rectangular plate is pushed by a reset spring to reset, the rectangular plate drives a knocking and vibrating arm to vibrate and knock a liquid containing cup, and through the arrangement of the ladder blocks, the knocking and vibrating arm can vibrate and vibrate the liquid containing cup when a housing moves downwards continuously. The knocking and vibrating arm continuously vibrates and knocks the liquid containing cup, so that bubbles in a liquid sample in the liquid containing cup are knocked and vibrated out, the effect of removing the bubbles in the liquid sample is achieved, and the bubbles in the liquid sample are prevented from interfering with Raman spectrum detection of the liquid sample.

Description

Technical Field

[0001] The present invention belongs to the technical field of Raman spectroscopy detection, and specifically relates to a Raman spectroscopy detection device for propyl gallate. Background Art

[0002] Propyl gallate is an excellent antioxidant. It is widely used in the food industry and can prevent the oxidative rancidity of oils and oil-containing foods. Its antioxidant principle is to protect the oil components in foods by being oxidized itself. Propyl gallate can capture the free radicals generated during the oxidation of oils and interrupt the free radical chain reaction. For example, adding propyl gallate to fried foods can extend the shelf life of the foods and maintain their flavor and color.

[0003] A patent application with the publication number CN110501325A discloses a rapid Raman detection method for propyl gallate in olive oil and its blended oils, including using the complexation of metal ions with propyl gallate in olive oil or its blended oils to form a water-soluble PG-M-PG complex, enabling PG, which is originally not easily enter the aqueous phase, to be extracted and enriched in the aqueous phase in the form of the PG-M-PG complex. In the surface-enhanced Raman scattering detection method for propyl gallate, since the Raman cross-section scattering of the PG-M-PG complex molecule is greater than that of the PG molecule, combined with the Raman enhancement effect of metal nanoparticles on the probe molecule, a higher Raman signal can be obtained.

[0004] Currently, in the prior art, when performing Raman detection on propyl gallate in liquid samples, due to the presence of certain bubbles in the liquid, these bubbles will change the optical path of the laser in the liquid during Raman detection of the liquid, causing the laser to scatter and reflect, thereby reducing the effective laser power reaching the sample molecules and interfering with the Raman detection, which is not conducive to the detection operation of liquid samples.

[0005] Therefore, the present invention provides a Raman spectroscopy detection device for propyl gallate. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A propyl gallate Raman spectroscopy detection device according to the present invention includes a support plate. Symmetrically fixed on the top of the support plate are vibration cup boxes. A rectangular box is fixedly installed between the tops of the two vibration cup boxes. On one side of the top of the support plate is fixedly installed a liquid receiving cup for placing liquid samples. The two vibration cup boxes are located on both sides of the liquid receiving cup, and the rectangular box is directly above the liquid receiving cup. On the other side of the top of the support plate is fixedly installed a liquid mixing barrel. A flow pipe is provided for flowing between the liquid mixing barrel and the liquid receiving cup. A filter residue box is arranged outside the flow pipe, and the filter residue box is fixedly installed on the top of the support plate. A filtrate component is arranged inside the filter residue box for filtering the liquid sample flowing out of the liquid mixing barrel. Inside each of the two vibration cup boxes is provided a liquid vibration component, and the liquid vibration component includes a knocking arm for driving the knocking arm to vibrate and knock the liquid sample in the liquid receiving cup. Inside the rectangular box is provided a degassing component for processing the bubble gas in the liquid sample. Inside the rectangular box is provided a shaft box. In the middle position of the inner wall of the shaft box is fixedly installed a spectroscopy detection device for performing Raman spectroscopy detection on the liquid sample. Inside the shaft box is provided a protection component for protecting the spectroscopy detection device.

[0008] The mixed liquid sample in the liquid mixing barrel is introduced into the liquid receiving cup through the flow pipe. When the liquid sample flows through the flow pipe, the filtrate component in the filter residue box filters it to prevent residues and impurities in the liquid sample from affecting the Raman spectroscopy detection operation of the liquid sample. When the liquid sample completely enters the liquid receiving cup, the liquid vibration component starts to operate. The liquid vibration component drives the knocking arm to vibrate and knock the liquid sample in the liquid receiving cup to knock out the bubbles in the liquid sample, preventing the bubbles from changing the laser path in the liquid during detection and interfering with the Raman detection. While the liquid vibration component is operating, the degassing component also operates, so that the degassing component discharges the gas and volatiles knocked out by the liquid vibration component from the liquid receiving cup, preventing the gas in the bubbles in the liquid sample from interfering with the detection of propyl gallate. When both operations are completed, the protection component inside the shaft box opens, and the spectroscopy detection device inside the shaft box will detect the liquid sample in the liquid receiving cup, thus realizing the Raman spectroscopy detection of the liquid sample in the liquid receiving cup and playing the role of detecting the liquid sample. The setting of the protection component is to protect the spectroscopy detection device when the spectroscopy detection device completes the detection of the liquid sample in the liquid receiving cup, preventing dust from falling on the spectroscopy detection device or the liquid sample in the liquid receiving cup from splashing on the spectroscopy detection device, playing the role of protecting the spectroscopy detection device and affecting the subsequent use of the spectroscopy detection device. Thus, the Raman spectroscopy detection of propyl gallate in the liquid sample is completed.

[0009] Preferably, a flow control valve is fixedly installed at the connection between the outer wall of the mixing liquid bucket and the liquid flow pipe, a butterfly valve is fixedly installed at the bottom of the liquid receiving cup, and a plurality of connecting rods are fixedly installed on the inner wall of the rectangular box. The bottom ends of the plurality of connecting rods are fixedly connected to the top of the shaft box. During operation, a flow pipe is connected to the bottom end of the liquid receiving cup. When it is necessary to introduce a liquid sample into the liquid receiving cup, the flow control valve is controlled to open, and the mixed liquid sample in the mixing liquid bucket will pass through the liquid flow pipe and enter the liquid receiving cup. When the detection of the liquid sample in the liquid receiving cup is completed, the butterfly valve is controlled to open, and the liquid in the liquid receiving cup will flow out, which plays a role in controlling the inflow and outflow of the liquid sample. The setting of the flow control valve is to control the flow rate of the liquid sample introduced into the liquid receiving cup, so that the flow rate of the liquid sample entering the liquid receiving cup each time is kept consistent. To prevent the number of propyl gallate molecules reaching the detection area per unit time from decreasing when the liquid sample flow rate is too small, the number of molecules interacting with the laser to generate Raman scattering also decreases correspondingly, resulting in a weakening of the Raman spectrum signal intensity, making it difficult to accurately detect and identify some originally weak characteristic peaks, which affects the qualitative analysis of propyl gallate.

[0010] Preferably, a motor is fixedly installed on the top of the rectangular box, a screw shaft is fixedly installed at the output end of the motor, a displacement block is threadedly connected to the outer wall of the screw shaft, a cover is fixedly installed on the outer wall of the displacement block, the cover is placed directly above the liquid receiving cup, the cover can cover the liquid receiving cup inside it, and the inner wall of the cover is slidably connected to the outer wall of the liquid flow pipe. When the liquid sample is introduced into the liquid receiving cup, the motor drives the screw shaft to rotate. When the screw shaft rotates, the displacement block is driven to move through screw transmission, and the displacement block will drive the cover to move downward on the top of the liquid receiving cup, thereby covering the liquid receiving cup, so as to determine a suitable detection environment for the spectral detection device to detect the sample in the liquid receiving cup and prevent the influence of light on the detection of the spectral detection device.

[0011] Preferably, the vibration liquid assembly further includes a pressing block fixedly installed on the outer wall of the housing. A rectangular plate is slidably connected to the inner wall of the vibration cup box. A plurality of stepped blocks are fixedly installed on one side of the rectangular plate. A plurality of return springs are arranged between the other side of the rectangular plate and the inner wall of the vibration cup box. The knocking arm is fixedly installed at the bottom end of the rectangular plate. The outer wall of the knocking arm can be attached to the outer wall of the liquid receiving cup. The outer wall of the pressing block can be slidably connected to the outer walls of the plurality of stepped blocks. One end of the pressing block and one end of the plurality of pressing blocks are symmetrically arranged as inclined sliding surfaces. When the housing moves downward, the housing drives the pressing block to move downward. When the pressing block moves downward, the pressing block squeezes and pushes the stepped block to move. Since there is a certain distance between the plurality of stepped blocks, when the stepped block is driven by the pressing block to drive the rectangular plate to move backward, when the pressing block loses contact with the stepped block, the rectangular plate will reset under the push of the return spring, and the rectangular plate will drive the knocking arm to vibrate and knock the liquid receiving cup. Through the arrangement of the plurality of stepped blocks, the knocking arm will continuously vibrate and knock the liquid receiving cup when the housing continuously moves downward, so as to knock out the bubbles in the liquid sample in the liquid receiving cup, play a role in removing the bubbles in the liquid sample, and prevent the bubbles in the liquid sample from interfering with the Raman detection.

[0012] Preferably, the degassing assembly includes a main wheel placed inside the shaft box and rotatably connected to the inner wall of the shaft box. The top of the main wheel is fixedly connected to the bottom end of the screw shaft. A plurality of auxiliary wheels are rotatably connected to the inner wall of the shaft box. The teeth on the main wheel are meshed with the teeth on the plurality of auxiliary wheels. The bottom of each of the plurality of auxiliary wheels is fixedly installed with an axial flow fan. The plurality of axial flow fans are all placed directly above the liquid receiving cup. When the motor drives the screw shaft to rotate, the screw shaft also drives the main wheel to rotate. When the main wheel rotates, the main wheel drives the plurality of auxiliary wheels to rotate through the meshing of the teeth, so that the plurality of auxiliary wheels drive the plurality of axial flow fans to rotate. Thus, when the knocking arm continuously vibrates and knocks the liquid receiving cup, the axial flow fans continuously rotate to extract the gas in the liquid sample knocked out in the liquid receiving cup, preventing the gas from remaining in the liquid receiving cup when the bubbles burst and affecting the detection operation of the spectral detection device.

[0013] Preferably, a plurality of air extraction cylinders are fixedly installed on the inner wall of the axle box. A plurality of axial flow fans are respectively placed inside the plurality of air extraction cylinders. The bottom ends of the plurality of air extraction cylinders are all in the shape of expanding cylinders. Air flow pipes are fixedly installed on the outer walls of the plurality of air extraction cylinders. The tails of the plurality of air flow pipes are all located outside the axle box. When the axial flow fans rotate, the blades push the air to flow. According to Bernoulli's principle, when the flow rate of a fluid increases, the static pressure will decrease. The fan blades rotate rapidly, causing the air in front of the blades to be accelerated, the air flow rate to increase, and the static pressure to decrease. While the static pressure of the air behind the blades of the axial flow fan is relatively high, thus forming a pressure difference. Under the action of this pressure difference, the air in the surrounding environment will flow from the back and around of the axial flow fan to the front of the axial flow fan. Therefore, when the bubble bursts, the gas in the bubble moves upward. When the gas moves upward, through the rotation of the axial flow fan, the gas will be driven by the axial flow fan into the air extraction cylinder. Subsequently, through the rotation of the axial flow fan, the gas entering the air extraction cylinder will be blown by the axial flow fan and flow out from the air flow pipe at the top of the air extraction cylinder. The setting of the air extraction cylinder limits the path of the gas flow.

[0014] Preferably, the protection and detection assembly includes a shaft rod. There are four shaft rods. Plugs are fixedly installed at the bottom ends of the four shaft rods. The outer walls of the four plugs are all slidably connected to the inner wall of the axle box. The four plugs can fit completely. Moving blocks are fixedly installed at the top ends of the four shaft rods. The outer walls of the four shaft rods are all slidably connected to the inner wall of the axle box. Four extrusion blocks are fixedly installed on the outer wall of the moving block. The bottoms of the four extrusion blocks can respectively slide on the outer walls of the four moving blocks. The bottoms of the four extrusion blocks and one side of the four moving blocks are all inclined sliding surfaces. When the motor drives the cover to move by rotating the screw shaft to cover the liquid receiving cup, the four extrusion blocks on the moving block will squeeze and push the four moving blocks to move backward. When the four moving blocks move, the four moving blocks drive the four plugs to move through the four shaft rods, and the four plugs will slide open from the inner wall of the axle box, and the spectral detection device located on the inner wall of the axle box will be exposed. At this time, the knocking arm completes the knocking of the liquid receiving cup, the axial flow fan completes the extraction of the gas, and the spectral detection device will detect the liquid sample in the liquid receiving cup.

[0015] Preferably, limit slide rods are fixedly installed on the outer walls of the four shaft rods. The outer walls of the four limit slide rods are all slidably connected to the inner wall of the axle box. Pressure-bearing springs are arranged between the outer walls of the four limit slide rods and the inner wall of the axle box. When the spectral detection device finishes the detection, the motor drives the screw shaft to reverse, so that the cover is reset. The moving block will lose the limiting thrust, and the limit slide rod will push the pressure-bearing spring to move, so that the pressure-bearing spring drives the shaft rod to be reset. The four plugs will slide and reset in the axle box, thus forming a complete baffle to prevent dust from falling on the spectral detection device when the device is not operating and to prevent the liquid sample from splashing on the spectral detection device when flowing in and out, playing a role in protecting the spectral detection device.

[0016] Preferably, the filtrate assembly includes a filter plate fixedly installed on the inner wall of the liquid flow pipe. When the liquid sample flows through the liquid flow pipe, the filter plate in the liquid flow pipe filters the liquid sample to prevent impurities in the liquid sample from affecting the detection effect of the spectral detection device on the liquid sample, thereby playing a role in filtering impurities in the liquid sample.

[0017] Preferably, a fitting block is slidably connected to the inner wall of the liquid flow pipe, and an inner sliding box is fixedly connected to the inner wall of the filter residue box. The outer wall of the fitting block is slidably connected to the inner wall of the inner sliding box. A return spring is arranged between the bottom of the fitting block and the inner wall of the return spring. A push rod is fixedly installed on the outer wall of the fitting block. One end of the push rod is beveled. The outer wall of the push rod can be slidably connected to the bottom of the cover shell. The top end of the fitting block can be slidably fitted with the inner wall of the liquid flow pipe. When the cover shell moves downward, the cover shell squeezes and pushes the push rod to move. When the push rod is pressed, the push rod drives the fitting block to squeeze the return spring and slide in the inner sliding box, and the top end of the fitting block will move out of the liquid flow pipe, and the impurities filtered out by the filter plate will flow out from the opening at the bottom end of the liquid flow pipe and fall into the filter residue box, thereby realizing the function of taking out the filtered impurities from the liquid flow pipe.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. For the propyl gallate Raman spectroscopy detection device of the present invention, when the pressing block moves downward, the pressing block squeezes and pushes the ladder block to move. When the contact between the pressing block and the ladder block is lost, the rectangular plate will reset under the push of the reset spring, and the rectangular plate will drive the knocking arm to knock the liquid receiving cup. Through the arrangement of multiple ladder blocks, the knocking arm will continuously knock the liquid receiving cup when the cover shell moves downward, thereby knocking out the bubbles in the liquid sample in the liquid receiving cup, playing a role in removing the bubbles in the liquid sample and preventing the bubbles in the liquid sample from interfering with the Raman spectroscopy detection.

[0020] 2. For the propyl gallate Raman spectroscopy detection device of the present invention, when the motor drives the screw shaft to rotate, the screw shaft also drives the main wheel to rotate. When the main wheel rotates, the main wheel drives multiple auxiliary wheels to rotate through tooth engagement, so that multiple auxiliary wheels drive multiple axial flow fans to rotate. When the knocking arm continuously knocks the liquid receiving cup, the axial flow fans continuously rotate to extract the gas in the liquid sample knocked out in the liquid receiving cup, preventing the gas from remaining in the liquid receiving cup when the bubbles burst and affecting the detection operation of the spectral detection device.

[0021] 3. In the propyl gallate Raman spectroscopy detection device of the present invention, when the spectroscopy detection device finishes detection, the motor drives the screw shaft to reverse, so that the housing is reset. The moving plate will lose the limiting thrust, and the limiting slide rod will push the pressure-bearing spring to move, so that the pressure-bearing spring drives the shaft rod to reset. The four blocking plates will slide and reset in the shaft box, thus forming a complete baffle, preventing dust from falling on the spectroscopy detection device when the device is not operating and preventing liquid samples from splashing onto the spectroscopy detection device when flowing in and out, playing a role in protecting the spectroscopy detection device.

[0022] 4. In the propyl gallate Raman spectroscopy detection device of the present invention, when the liquid sample flows through the liquid flow pipe, the filter plate in the liquid flow pipe filters the liquid sample, preventing impurities in the liquid sample from affecting the detection effect of the spectroscopy detection device on the liquid sample, playing a role in filtering impurities in the liquid sample. When the housing moves downward, the housing squeezes and pushes the push rod to move. When the push rod is pressed, the push rod drives the fitting block to slide in the inner sliding box by squeezing the return spring. The top of the fitting block will move out of the liquid flow pipe, and the impurities filtered out by the filter plate will flow out from the opening at the bottom of the liquid flow pipe and fall into the filter residue box, realizing the function of removing the filtered impurities from the liquid flow pipe.

[0023] 5. In the propyl gallate Raman spectroscopy detection device of the present invention, when the motor drives the screw shaft to rotate, the screw shaft drives the shifting block to move through thread transmission, and the shifting block will drive the housing to move downward on the top of the liquid receiving cup, thus covering the liquid receiving cup, determining a suitable detection environment for the spectroscopy detection device to detect the sample in the liquid receiving cup, and preventing light from affecting the detection of the spectroscopy detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 is the main diagram of the present invention;

[0026] Figure 2 is the overall diagram of the present invention;

[0027] Figure 3 is the structural schematic diagram of the knocking arm in the present invention;

[0028] Figure 4 is the structural schematic diagram of the shaft box in the present invention;

[0029] Figure 5 is the structural schematic diagram of the air extraction cylinder in the present invention;

[0030] Figure 6 is the structural schematic diagram of the extrusion block in the present invention;

[0031] Figure 7 It is a schematic structural diagram of the shaft rod in the present invention;

[0032] Figure 8 It is a schematic structural diagram of the limited-slip rod in the present invention;

[0033] Figure 9 It is a schematic structural diagram of the plug plate in the present invention;

[0034] Figure 10 It is a schematic structural diagram of the fitting block in the present invention.

[0035] In the figure: 1, rectangular box; 101, connecting rod; 2, liquid mixing barrel; 201, flow control valve; 3, liquid receiving cup; 301, butterfly valve; 4, filter residue box; 401, push rod; 402, fitting block; 403, return block spring; 404, inner sliding box; 5, motor; 501, screw shaft; 502, shifting block; 503, squeezing block; 6, housing; 7, liquid flow pipe; 701, filter plate; 8, vibrating cup box; 801, rectangular plate; 802, knocking and vibrating arm; 803, ladder block; 804, reset spring; 805, pressing block; 9, shaft box; 901, auxiliary wheel; 902, main wheel; 903, axial flow fan; 10, air extraction cylinder; 11, shaft rod; 1101, shifting plate block; 1102, bearing spring; 1103, limited-slip rod; 1104, plug plate; 12, spectral detection device; 13, support plate. Specific embodiments

[0036] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0037] Such as Figures 1 to 10As shown in the figure, a propyl gallate Raman spectroscopy detection device according to an embodiment of the present invention includes a support plate 13. Symmetrically and fixedly installed on the top of the support plate 13 are vibration cup boxes 8. Fixedly installed between the tops of the two vibration cup boxes 8 is a rectangular box 1. On one side of the top of the support plate 13, a liquid receiving cup 3 is fixedly installed. The liquid receiving cup 3 is used to place a liquid sample. The two vibration cup boxes 8 are located on both sides of the liquid receiving cup 3, and the rectangular box 1 is located directly above the liquid receiving cup 3. On the other side of the top of the support plate 13, a liquid mixing barrel 2 is fixedly installed. A flow liquid pipe 7 is provided for fluid communication between the liquid mixing barrel 2 and the liquid receiving cup 3. An external filter residue box 4 is provided on the flow liquid pipe 7. The filter residue box 4 is fixedly installed on the top of the support plate 13. A filtrate component is provided inside the filter residue box 4. The filtrate component is used to filter the liquid sample flowing out of the liquid mixing barrel 2. Vibration liquid components are provided inside both of the two vibration cup boxes 8. The vibration liquid component includes a knocking and vibrating arm 802. The vibration liquid component is used to drive the knocking and vibrating arm 802 to vibrate and knock the liquid sample in the liquid receiving cup 3. An air removal component is provided inside the rectangular box 1. The air removal component is used to process the bubble gas in the liquid sample. A shaft box 9 is provided inside the rectangular box 1. At the middle position of the inner wall of the shaft box 9, a spectroscopy detection device 12 is fixedly installed. The spectroscopy detection device 12 is used to perform Raman spectroscopy detection on the liquid sample. A protection detection component is provided inside the shaft box 9. The protection detection component is used to protect the spectroscopy detection device 12;

[0038] The bubbles in the liquid sample will change the optical path of the laser in the liquid, causing the laser to scatter and reflect, thereby reducing the effective laser power reaching the sample molecules and interfering with the Raman detection;

[0039] By passing the mixed liquid sample in the mixing liquid bucket 2 through the liquid flow pipe 7 into the liquid receiving cup 3, when the liquid sample flows through the liquid flow pipe 7, the filtrate assembly filters the liquid sample flowing through the liquid flow pipe 7 to prevent residues and impurities in the liquid sample from affecting the Raman spectroscopy detection operation of the liquid sample. When the liquid sample completely enters the liquid receiving cup 3, the liquid vibrating assembly starts to operate at this time. The liquid vibrating assembly vibrates and knocks the liquid sample in the liquid receiving cup 3 by driving the knocking arm 802 to knock out the bubbles in the liquid sample in the liquid receiving cup 3 to prevent the bubbles from changing the optical path of the laser in the liquid and interfering with the Raman detection when detecting it. When the liquid vibrating assembly is operating, the degassing assembly also operates at the same time, so that the degassing assembly discharges the gas and volatile substances knocked out by the liquid vibrating assembly from the liquid receiving cup 3 to prevent the gas in the bubbles in the liquid sample from interfering with the detection of propyl gallate. When both operations are completed, the protective detection assembly inside the shaft box 9 is opened at this time, and the spectral detection device 12 inside the shaft box 9 will detect the liquid sample in the liquid receiving cup 3, so as to realize the Raman spectroscopy detection of the liquid sample in the liquid receiving cup 3 and play the role of detecting the liquid sample. The setting of the protective detection assembly is to protect the spectral detection device 12 when the spectral detection device 12 finishes detecting the liquid sample in the liquid receiving cup 3, prevent dust from falling on the spectral detection device 12 or the liquid sample in the liquid receiving cup 3 from splashing on the spectral detection device 12, play the role of protecting the spectral detection device 12, and affect the subsequent use of the spectral detection device 12. Thus, the Raman spectroscopy detection of propyl gallate in the liquid sample is completed.

[0040] As Figures 1 to 2 shown, a flow control valve 201 is fixedly installed at the connection between the outer wall of the mixing liquid bucket 2 and the liquid flow pipe 7, a butterfly valve 301 is fixedly installed at the bottom of the liquid receiving cup 3, and a plurality of connecting rods 101 are fixedly installed on the inner wall of the rectangular box 1. The bottom ends of the plurality of connecting rods 101 are fixedly connected to the top of the shaft box 9;

[0041] During operation, by connecting a liquid outlet pipe to the bottom end of the liquid receiving cup 3, when it is necessary to introduce a liquid sample into the liquid receiving cup 3, by controlling the opening of the flow control valve 201, the mixed liquid sample in the mixing liquid bucket 2 will pass through the liquid flow pipe 7 into the liquid receiving cup 3. When the detection of the liquid sample in the liquid receiving cup 3 is completed, control the butterfly valve 301 to open, and the liquid in the liquid receiving cup 3 will flow out, playing the role of controlling the inflow and outflow of the liquid sample. The setting of the flow control valve 201 is to control the flow rate of the liquid sample introduced into the liquid receiving cup 3 so that the flow rate of the liquid sample entering the liquid receiving cup 3 each time remains the same, preventing the number of propyl gallate molecules reaching the detection area per unit time from decreasing when the flow rate of the liquid sample is too small, and the number of molecules interacting with the laser to generate Raman scattering also decreases accordingly, resulting in a weakening of the Raman spectral signal intensity and making it difficult to accurately detect and identify some originally weak characteristic peaks, affecting the qualitative analysis of propyl gallate.

[0042] As Figures 3 to 4 shown, a motor 5 is fixedly installed on the top of the rectangular box 1. The output end of the motor 5 is fixedly installed with a screw shaft 501. The outer wall of the screw shaft 501 is threadedly connected with a displacement block 502. The outer wall of the displacement block 502 is fixedly installed with a cover 6. The cover 6 is placed directly above the liquid receiving cup 3. The cover 6 can cover the liquid receiving cup 3 inside it. The inner wall of the cover 6 is slidably connected with the outer wall of the liquid flow pipe 7;

[0043] When the liquid sample is introduced into the liquid receiving cup 3, the motor 5 drives the screw shaft 501 to rotate. When the screw shaft 501 rotates, the displacement block 502 is driven to move through screw transmission. The displacement block 502 will drive the cover 6 to move downward on the top of the liquid receiving cup 3, so as to cover the liquid receiving cup 3, providing a suitable detection environment for the spectral detection device 12 to detect the sample in the liquid receiving cup 3 and preventing the influence of light on the detection of the spectral detection device 12.

[0044] As Figures 2 to 3 shown, the liquid vibrating assembly further includes a pressing block 805. The pressing block 805 is fixedly installed on the outer wall of the cover 6. A rectangular plate 801 is slidably connected to the inner wall of the vibrating cup box 8. One side of the rectangular plate 801 is fixedly installed with a plurality of stepped blocks 803. A plurality of return springs 804 are arranged between the other side of the rectangular plate 801 and the inner wall of the vibrating cup box 8. A knocking arm 802 is fixedly installed at the bottom end of the rectangular plate 801. The outer wall of the knocking arm 802 can be attached to the outer wall of the liquid receiving cup 3. The outer wall of the pressing block 805 can be slidably connected to the outer walls of the plurality of stepped blocks 803. One end of the pressing block 805 and one end of the plurality of pressing blocks 805 are symmetrically arranged as inclined sliding surfaces;

[0045] When the cover 6 moves downward, the cover 6 drives the pressing block 805 to move downward. When the pressing block 805 moves downward, the pressing block 805 squeezes and pushes the stepped block 803 to move. Since there is a certain distance between the plurality of stepped blocks 803, when the stepped block 803 is driven by the extrusion of the pressing block 805 to drive the rectangular plate 801 to move backward, when the pressing block 805 loses contact with the stepped block 803, the rectangular plate 801 will be reset under the push of the return spring 804. The rectangular plate 801 will drive the knocking arm 802 to vibrate and knock the liquid receiving cup 3. Through the arrangement of the plurality of stepped blocks 803, the knocking arm 802 will continuously vibrate and knock the liquid receiving cup 3 when the cover 6 continuously moves downward, so as to knock out the bubbles in the liquid sample in the liquid receiving cup 3, playing a role in removing the bubbles in the liquid sample and preventing the bubbles in the liquid sample from interfering with the Raman detection.

[0046] As Figures 4 to 7As shown, the degassing assembly includes a main wheel 902, which is placed inside the axle box 9 and rotatably connected to the inner wall of the axle box 9. The top of the main wheel 902 is fixedly connected to the bottom end of the screw shaft 501. The inner wall of the axle box 9 is rotatably connected with a plurality of auxiliary wheels 901. The teeth on the main wheel 902 are engaged with the teeth on the plurality of auxiliary wheels 901. The bottom of each of the plurality of auxiliary wheels 901 is fixedly installed with an axial flow fan 903, and the plurality of axial flow fans 903 are all directly above the liquid receiving cup 3;

[0047] When the motor 5 drives the screw shaft 501 to rotate, the screw shaft 501 also drives the main wheel 902 to rotate. When the main wheel 902 rotates, the main wheel 902 drives the plurality of auxiliary wheels 901 to rotate through the engagement of the teeth, so that the plurality of auxiliary wheels 901 drive the plurality of axial flow fans 903 to rotate. Thus, when the knocking arm 802 continuously knocks the liquid receiving cup 3, the axial flow fans 903 continuously rotate to extract the gas in the liquid sample knocked out in the liquid receiving cup 3, preventing the gas from remaining in the liquid receiving cup 3 when the bubbles burst and affecting the detection operation of the spectral detection device 12.

[0048] As Figures 6 to 7 As shown, the inner wall of the axle box 9 is fixedly installed with a plurality of air extraction cylinders 10. The plurality of axial flow fans 903 are respectively placed inside the plurality of air extraction cylinders 10. The bottom ends of the plurality of air extraction cylinders 10 are all in the shape of an expanding cylinder. The outer walls of the plurality of air extraction cylinders 10 are all fixedly installed with air flow pipes, and the tails of the plurality of air flow pipes are all outside the axle box 9;

[0049] When the axial flow fan 903 rotates, the blades push the air to flow. According to Bernoulli's principle, when the flow velocity of the fluid increases, the static pressure will decrease. The fan blades rotate rapidly, causing the air in front of the blades to be accelerated, the air flow velocity to increase, and the static pressure to decrease. The static pressure of the air behind the blades of the axial flow fan 903 is relatively high. In this way, a pressure difference is formed. Under the action of this pressure difference, the air in the surrounding environment will flow from the back and the surrounding of the axial flow fan 903 to the front of the axial flow fan 903. Therefore, when the bubble bursts, the gas in the bubble moves upward. When the gas moves upward, through the rotation of the axial flow fan 903, the gas will be driven by the axial flow fan 903 into the air extraction cylinder 10. Subsequently, through the rotation of the axial flow fan 903, the gas entering the air extraction cylinder 10 will be blown by the axial flow fan 903 and flow out from the air flow pipe at the top of the air extraction cylinder 10. The setting of the air extraction cylinder 10 limits the path of the gas flow. The shape and angle design of the blades of the axial flow fan 903 need to be designed according to the actual situation.

[0050] As Figures 6 to 9As shown, the protection and detection component includes a shaft rod 11. There are four shaft rods 11. At the bottom ends of the four shaft rods 11, plug plates 1104 are fixedly installed. The outer walls of the four plug plates 1104 are all slidably connected to the inner wall of the shaft box 9. The four plug plates 1104 can completely fit together. At the top ends of the four shaft rods 11, moving plate blocks 1101 are fixedly installed. The outer walls of the four shaft rods 11 are all slidably connected to the inner wall of the shaft box 9. Four extrusion blocks 503 are fixedly installed on the outer wall of the displacement block 502. The bottoms of the four extrusion blocks 503 can respectively be slidably connected to the outer walls of the four moving plate blocks 1101. The bottoms of the four extrusion blocks 503 and one side of the four moving plate blocks 1101 are both inclined sliding surfaces;

[0051] When the motor 5 drives the cover 6 to move through the rotation of the screw shaft 501 to cover the liquid receiving cup 3, the four extrusion blocks 503 on the displacement block 502 will squeeze and push the four moving plate blocks 1101 to move backward. When the four moving plate blocks 1101 move, the four moving plate blocks 1101 drive the four plug plates 1104 to move through the four shaft rods 11. The four plug plates 1104 will slide open from the inner wall of the shaft box 9, and the spectral detection device 12 located on the inner wall of the shaft box 9 will be exposed. At this time, the knocking arm 802 completes the knocking of the liquid receiving cup 3, the axial flow fan 903 completes the extraction of the gas, and the spectral detection device 12 will detect the liquid sample in the liquid receiving cup 3.

[0052] As Figures 8 to 9 shown, limit slide rods 1103 are fixedly installed on the outer walls of the four shaft rods 11. The outer walls of the four limit slide rods 1103 are all slidably connected to the inner wall of the shaft box 9. Pressure-bearing springs 1102 are arranged between the outer walls of the four limit slide rods 1103 and the inner wall of the shaft box 9;

[0053] When the spectral detection device 12 finishes the detection, the motor 5 drives the screw shaft 501 to reverse, so that the cover 6 is reset. The moving plate block 1101 will lose the limiting thrust, and the limit slide rod 1103 will push the pressure-bearing spring 1102 to move, so that the pressure-bearing spring 1102 drives the shaft rod 11 to be reset. The four plug plates 1104 will slide and reset in the shaft box 9, thus forming a complete baffle to prevent dust from falling on the spectral detection device 12 when the device is not operating and to prevent the liquid sample from splashing onto the spectral detection device 12 when flowing in and out, playing a role in protecting the spectral detection device 12.

[0054] As Figure 10 shown, the filtrate component includes a filter plate 701. The filter plate 701 is fixedly installed on the inner wall of the liquid flow pipe 7;

[0055] Since the presence of impurities will change the optical properties and scattering characteristics of the solution, causing changes in the slope and intercept of the calibration curve, resulting in deviations in the quantitative analysis results. Therefore, when the liquid sample flows through the flow tube 7, the filter plate 701 in the flow tube 7 filters the liquid sample to prevent impurities in the liquid sample from affecting the detection effect of the spectral detection device 12 on the liquid sample, playing a role in filtering impurities in the liquid sample.

[0056] As Figure 1 and Figure 10 shown, a fitting block 402 is slidably connected to the inner wall of the flow tube 7, an inner sliding box 404 is fixedly connected to the inner wall of the filter residue box 4, the outer wall of the fitting block 402 is slidably connected to the inner wall of the inner sliding box 404, a return spring 403 is arranged between the bottom of the fitting block 402 and the inner wall of the return spring 403, a push rod 401 is fixedly installed on the outer wall of the fitting block 402, one end of the push rod 401 is a slope, the outer wall of the push rod 401 can be slidably connected to the bottom of the cover 6, and the top end of the fitting block 402 can be slidably fitted to the inner wall of the flow tube 7;

[0057] When the cover 6 moves downward, the cover 6 squeezes and pushes the push rod 401 to move. When the push rod 401 is pressed, the push rod 401 drives the fitting block 402 to slide in the inner sliding box 404 and squeeze the return spring 403. The top end of the fitting block 402 will then move out of the flow tube 7, and the impurities filtered out by the filter plate 701 will flow out from the opening at the bottom end of the flow tube 7 and fall into the filter residue box 4, thus realizing the function of removing the filtered impurities from the flow tube 7.

[0058] Working principle: The mixed liquid sample in the mixing liquid bucket 2 is introduced into the liquid receiving cup 3 through the liquid flow pipe 7. When the liquid sample flows through the liquid flow pipe 7, the filtrate component in the filter residue box 4 filters it to prevent residues and impurities in the liquid sample from affecting the Raman spectroscopy detection operation of the liquid sample. When the liquid sample completely enters the liquid receiving cup 3, the liquid vibrating component starts to operate at this time. The liquid vibrating component drives the knocking arm 802 to vibrate and knock the liquid sample in the liquid receiving cup 3, knocking out the bubbles in the liquid sample in the liquid receiving cup 3 to prevent the bubbles from changing the optical path of the laser in the liquid and interfering with the Raman detection when detecting it. When the liquid vibrating component is operating, the degassing component also operates simultaneously, so that the degassing component discharges the gas and volatile substances knocked out by the liquid vibrating component from the liquid receiving cup 3 to prevent the gas in the bubbles in the liquid sample from interfering with the detection of propyl gallate. When both operations are completed, the detection protection component in the shaft box 9 is opened at this time, and the spectral detection device 12 in the shaft box 9 will detect the liquid sample in the liquid receiving cup 3, thereby realizing the Raman spectroscopy detection of the liquid sample in the liquid receiving cup 3 and playing the role of detecting the liquid sample. The setting of the detection protection component is to protect the spectral detection device 12 when the spectral detection device 12 finishes detecting the liquid sample in the liquid receiving cup 3, preventing dust from falling on the spectral detection device 12 or the liquid sample in the liquid receiving cup 3 from splashing onto the spectral detection device 12, playing the role of protecting the spectral detection device 12 and affecting the subsequent use of the spectral detection device 12. Thus, the Raman spectroscopy detection of propyl gallate in the liquid sample is completed;

[0059] During operation, a flow pipe is connected to the bottom of the liquid receiving cup 3. When it is necessary to introduce a liquid sample into the liquid receiving cup 3, the control flow valve 201 is controlled to open, and the mixed liquid sample in the mixing liquid bucket 2 will pass through the liquid flow pipe 7 and enter the liquid receiving cup 3. When the detection of the liquid sample in the liquid receiving cup 3 is completed, the butterfly valve 301 is controlled to open, and the liquid in the liquid receiving cup 3 will flow out, playing the role of controlling the inflow and outflow of the liquid sample. The setting of the control flow valve 201 is to control the flow rate of the liquid sample introduced into the liquid receiving cup 3, so that the flow rate of the liquid sample entering the liquid receiving cup 3 each time remains consistent, preventing the number of propyl gallate molecules reaching the detection area per unit time from decreasing when the flow rate of the liquid sample is too small, and the number of molecules interacting with the laser to generate Raman scattering also decreases correspondingly, resulting in a weakening of the Raman spectral signal intensity, making it difficult to accurately detect and identify some originally weak characteristic peaks and affecting the qualitative analysis of propyl gallate;

[0060] When a liquid sample is introduced into the liquid inlet cup 3, the motor 5 drives the screw shaft 501 to rotate. When the screw shaft 501 rotates, it drives the displacement block 502 to move through screw thread transmission. The displacement block 502 will drive the cover 6 to move downward on the top of the liquid inlet cup 3, thus covering the liquid inlet cup 3, determining a suitable detection environment for the spectral detection device 12 to detect the sample in the liquid inlet cup 3, and preventing light from affecting the detection of the spectral detection device 12;

[0061] When the cover 6 moves downward, the cover 6 drives the pressing block 805 to move downward. When the pressing block 805 moves downward, the pressing block 805 squeezes and pushes the ladder block 803 to move. Since there is a certain distance between multiple ladder blocks 803, when the ladder block 803 is driven by the pressing block 805 to drive the moment plate 801 to move backward, when the contact between the pressing block 805 and the ladder block 803 is lost, the moment plate 801 will reset under the push of the return spring 804, and the moment plate 801 will drive the knocking arm 802 to knock the liquid inlet cup 3. Through the setting of multiple ladder blocks 803, the knocking arm 802 will continuously knock the liquid inlet cup 3 when the cover 6 moves downward continuously, so as to knock out the bubbles in the liquid sample in the liquid inlet cup 3, playing a role in removing the bubbles in the liquid sample and preventing the bubbles in the liquid sample from interfering with Raman detection;

[0062] When the motor 5 drives the screw shaft 501 to rotate, the screw shaft 501 also drives the main wheel 902 to rotate. When the main wheel 902 rotates, the main wheel 902 drives multiple auxiliary wheels 901 to rotate through tooth engagement, so that multiple auxiliary wheels 901 drive multiple axial flow fans 903 to rotate. Thus, when the knocking arm 802 continuously knocks the liquid inlet cup 3, the axial flow fans 903 continuously rotate to extract the gas in the liquid sample knocked out in the liquid inlet cup 3, preventing the gas from remaining in the liquid inlet cup 3 when the bubbles burst and affecting the detection operation of the spectral detection device 12;

[0063] When the axial flow fan 903 rotates, the blades push the air to flow. According to Bernoulli's principle, when the flow velocity of a fluid increases, the static pressure decreases. The fan blades rotate rapidly, causing the air in front of the blades to be accelerated, the air flow velocity to increase, and the static pressure to decrease. The static pressure of the air behind the blades of the axial flow fan 903 is relatively high, thus forming a pressure difference. Under the action of this pressure difference, the air in the surrounding environment will flow from the back and around of the axial flow fan 903 to the front of the axial flow fan 903. Therefore, when the bubble bursts, the gas in the bubble moves upward. When the gas moves upward, due to the rotation of the axial flow fan 903, the gas will be driven by the axial flow fan 903 into the air extraction cylinder 10. Subsequently, through the rotation of the axial flow fan 903, the gas entering the air extraction cylinder 10 will be blown by the axial flow fan 903 and flow out from the air flow pipe at the top of the air extraction cylinder 10. The setting of the air extraction cylinder 10 limits the path of the gas flow. The shape and angle design of the blades of the axial flow fan 903 need to be designed according to the actual situation;

[0064] When the motor 5 drives the cover 6 to move through the rotation of the screw shaft 501 to cover the liquid receiving cup 3, the four extrusion blocks 503 on the displacement block 502 will squeeze and push the four moving plate blocks 1101 to move backward. When the four moving plate blocks 1101 move, the four moving plate blocks 1101 drive the four blocking plates 1104 to move through the four shaft rods 11, and the four blocking plates 1104 will slide open from the inner wall of the shaft box 9. The spectral detection device 12 located on the inner wall of the shaft box 9 will be exposed. At this time, the knocking arm 802 completes the knocking of the liquid receiving cup 3, the axial flow fan 903 completes the extraction of the gas, and the spectral detection device 12 will detect the liquid sample in the liquid receiving cup 3;

[0065] When the spectral detection device 12 finishes the detection, the motor 5 drives the screw shaft 501 to reverse, so that the cover 6 is reset. The moving plate block 1101 will lose the limiting thrust, and the anti-slip rod 1103 will push the bearing spring 1102 to move, so that the bearing spring 1102 drives the shaft rod 11 to be reset. The four blocking plates 1104 will slide and reset in the shaft box 9, thus forming a complete baffle to prevent dust from falling on the spectral detection device 12 when the device is not operating and to prevent the liquid sample from splashing on the spectral detection device 12 when flowing in and out, playing a role in protecting the spectral detection device 12;

[0066] When the liquid sample flows through the liquid flow pipe 7, the filter plate 701 in the liquid flow pipe 7 filters the liquid sample to prevent impurities in the liquid sample from affecting the detection effect of the spectral detection device 12 on the liquid sample, playing a role in filtering impurities in the liquid sample;

[0067] When the housing 6 moves downward, the housing 6 squeezes and pushes the push rod 401 to move. When the push rod 401 is pressed, the push rod 401 drives the fitting block 402 to slide in the inner sliding box 404 by squeezing the return spring 403. The top end of the fitting block 402 will then move out of the liquid flow pipe 7, and the impurities filtered out by the filter plate 701 will flow out from the opening at the bottom end of the liquid flow pipe 7 and fall into the filter residue box 4, thereby realizing the function of removing the filtered impurities from the liquid flow pipe 7.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A Raman spectrum detection device for propyl gallate, characterized in that: The invention comprises a support plate (13), a vibrating cup box (8) is symmetrically fixedly installed on the top of the support plate (13), a rectangular box (1) is fixedly installed between the tops of the two vibrating cup boxes (8), a nano-liquid cup (3) is fixedly installed on one side of the top of the support plate (13), the nano-liquid cup (3) is used to place a liquid sample, the two vibrating cup boxes (8) are placed on both sides of the nano-liquid cup (3), the rectangular box (1) is placed directly above the nano-liquid cup (3), a mixing liquid barrel (2) is fixedly installed on the other side of the top of the support plate (13), a liquid flow pipe (7) is provided between the mixing liquid barrel (2) and the nano-liquid cup (3), a filter residue box (4) is provided outside the liquid flow pipe (7), the filter residue box (4) is fixedly installed on the top of the support plate (13), a filtrate assembly is provided inside the filter residue box (4), and the filtrate The assembly is used for filtering the liquid sample flowing out of the liquid mixing barrel (2). The two vibrating cup boxes (8) are both provided with a liquid vibrating assembly, the liquid vibrating assembly comprising a knocking and vibrating arm (802), the liquid vibrating assembly being used for driving the knocking and vibrating arm (802) to vibrate the liquid sample in the nano-liquid cup (3). The interior of the matrix box (1) is provided with a degassing assembly, the degassing assembly being used for processing the bubble gas in the liquid sample. The interior of the matrix box (1) is provided with an axis box (9), a spectrum detection device (12) is fixedly installed at the middle position of the inner wall of the axis box (9), the spectrum detection device (12) being used for performing Raman spectrum detection on the liquid sample. The interior of the axis box (9) is provided with a protection detection assembly, the protection detection assembly being used for protecting the spectrum detection device (12).

2. A Raman spectrum detection device for propyl gallate according to claim 1, characterized in that: A flow control valve (201) is fixedly installed at the connection between the outer wall of the mixing liquid barrel (2) and the liquid flow pipe (7), a butterfly valve (301) is fixedly installed at the bottom of the liquid storage cup (3), and a plurality of connecting rods (101) are fixedly installed on the inner wall of the torque box (1), and the bottom ends of the plurality of connecting rods (101) are fixedly connected to the top of the shaft box (9).

3. A Raman spectrum detection device for propyl gallate according to claim 2, characterized in that: A motor (5) is fixedly mounted on the top of the torque box (1), a screw shaft (501) is fixedly mounted on the output end of the motor (5), a displacement block (502) is threadedly connected to the outer wall of the screw shaft (501), a cover shell (6) is fixedly mounted on the outer wall of the displacement block (502), the cover shell (6) is placed directly above the nano-liquid cup (3), the cover shell (6) can cover the nano-liquid cup (3) inside, and the inner wall of the cover shell (6) is slidably connected to the outer wall of the liquid flow pipe (7).

4. A Raman spectrum detection device for propyl gallate according to claim 3, characterized in that: The liquid vibration component also includes a pressing block (805), which is fixedly installed on the outer wall of the cover shell (6), and the inner wall of the vibration cup box (8) is slidably connected to a rectangular plate (801), and a plurality of ladder blocks (803) are fixedly installed on one side of the rectangular plate (801), and a plurality of return springs (804) are arranged between the other side of the rectangular plate (801) and the inner wall of the vibration cup box (8), and a knocking and vibrating arm (802) is fixedly installed on the bottom end of the rectangular plate (801), and the outer wall of the knocking and vibrating arm (802) can fit with the outer wall of the liquid cup (3), and the outer wall of the pressing block (805) can be slidably connected to the outer walls of the plurality of ladder blocks (803), and one end of the pressing block (805) and one end of the plurality of pressing blocks (805) are symmetrically arranged as inclined sliding surfaces.

5. A Raman spectrum detection device for propyl gallate according to claim 4, characterized in that: The degassing component comprises a main wheel (902), the main wheel (902) is placed inside the shaft box (9) and is rotatably connected to the inner wall of the shaft box (9), the top of the main wheel (902) is fixedly connected to the bottom end of the screw shaft (501), the inner wall of the shaft box (9) is rotatably connected to multiple secondary wheels (901), the teeth on the main wheel (902) are meshed with the teeth on the multiple secondary wheels (901), and the bottoms of the multiple secondary wheels (901) are fixedly installed with axial flow fans (903), and the multiple axial flow fans (903) are all placed directly above the nanoliquid cup (3).

6. A Raman spectrum detection device for propyl gallate according to claim 5, characterized in that: A plurality of exhaust cylinders (10) are fixedly mounted on the inner wall of the shaft box (9), and a plurality of axial flow fans (903) are respectively placed inside the plurality of exhaust cylinders (10). The bottom ends of the plurality of exhaust cylinders (10) are all in the shape of expanded cylinders. An airflow pipe is fixedly mounted on the outer wall of the plurality of exhaust cylinders (10), and the tail ends of the plurality of airflow pipes are all placed outside the shaft box (9).

7. A Raman spectrum detection device for propyl gallate according to claim 6, characterized in that: The protection and detection component comprises a shaft rod (11), wherein there are four shaft rods (11), the bottom ends of the four shaft rods (11) are fixedly mounted with a blocking plate (1104), the outer walls of the four blocking plates (1104) are slidably connected to the inner wall of the shaft box (9), and the four blocking plates (1104) can be completely fitted, the top ends of the four shaft rods (11) are fixedly mounted with a shifting plate (1101), the outer walls of the four shaft rods (11) are slidably connected to the inner wall of the shaft box (9), the outer wall of the shifting block (502) is fixedly mounted with four squeezing blocks (503), the bottoms of the four squeezing blocks (503) can be slidably connected to the outer walls of the four shifting plates (1101), and the bottoms of the four squeezing blocks (503) and one side of the four shifting plates (1101) are all inclined sliding surfaces.

8. A Raman spectrum detection device for propyl gallate according to claim 7, characterized in that: The outer walls of the four shaft rods (11) are fixedly mounted with limited sliding rods (1103), the outer walls of the four limited sliding rods (1103) are slidably connected to the inner wall of the shaft box (9), and pressure springs (1102) are arranged between the outer walls of the four limited sliding rods (1103) and the inner wall of the shaft box (9).

9. A Raman spectrum detection device for propyl gallate according to claim 8, characterized in that: The filtrate assembly comprises a filter plate (701), and the filter plate (701) is fixedly mounted on the inner wall of the liquid flow pipe (7).

10. A Raman spectrum detection device for propyl gallate according to claim 9, characterized in that: The inner wall of the liquid flow pipe (7) is slidably connected to a fitting block (402), the inner wall of the filter residue box (4) is fixedly connected to an inner sliding box (404), the outer wall of the fitting block (402) is slidably connected to the inner wall of the inner sliding box (404), a return block spring (403) is provided between the bottom of the fitting block (402) and the inner wall of the return block spring (403), a push rod (401) is fixedly installed on the outer wall of the fitting block (402), one end of the push rod (401) is an inclined surface, the outer wall of the push rod (401) can be slidably connected to the bottom of the cover shell (6), and the top of the fitting block (402) can be slidably fitted with the inner wall of the liquid flow pipe (7).

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