A gas chromatography test device for hydroquinone

Abstract

The present invention relates to the technical field of gas chromatography testing, and provides a hydroquinone gas chromatography testing device, comprising: a base plate, a tester fixedly installed on the top of the base plate, a display screen fixedly installed on the top of the tester, a top frame arranged on the top of the tester, a slide groove one being provided on both sides of the inner wall of the top frame, two slide grooves one being internally slidably connected with a U-shaped frame, two limit rods being fixedly installed on the inner wall of the U-shaped frame, the outer surfaces of the two limit rods being slidably connected with a storage tank via a slider, a bump one being fixedly installed on the top of the storage tank, and in an embodiment of the present invention, when bistrimethylsilyl trifluoroacetamide inside the mixing tank reacts with the hydroxyl group of hydroquinone to generate trimethylsilane derivatives, the polarity is reduced and the volatility is increased, when the acetylated derivative inside the mixing tank reacts with hydroquinone to generate the acetylated derivative, when the pyridine solvent inside the mixing tank reacts with hydroquinone, the mixing uniformity is improved and the reaction is promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of gas chromatography testing, in particular to a hydroquinone gas chromatography testing device. Background Art

[0002] Catechols (including catechol, resorcinol, and hydroquinone) are an important class of phenolic compounds, widely used in medicine, chemicals, dyes, and other fields. Due to their active chemical properties, derivatization is often required during detection to increase their volatility and make them suitable for gas chromatography (GC) analysis.

[0003] Traditional methods for detecting diphenol typically use silanization derivatization (such as BSTFA) or acetylation derivatization (such as acetic anhydride). However, these methods suffer from significant operational errors. The amount of derivatization reagent added, mixing uniformity, and reaction time rely on manual control, which can easily lead to incomplete reactions or unstable derivatization efficiency, affecting detection accuracy. Mixing efficiency is also low. Traditional methods of mixing the reaction solution using manual shaking or magnetic stirring make it difficult to ensure sufficient contact between the diphenol and the derivatization reagent, potentially resulting in uneven reactions. Furthermore, the degree of automation is low, and most existing devices are unable to achieve precise liquid addition, automatic mixing, and reaction control, resulting in poor experimental reproducibility and impacting detection efficiency. Summary of the Invention

[0004] The present invention aims to address the existing problems of large manual operation errors, reliance on manual control of the amount of derivatization reagent added, mixing uniformity, and reaction time, which can easily lead to incomplete reactions or unstable derivatization efficiency, affecting detection accuracy. Furthermore, mixing efficiency is low. Conventional methods of mixing the reaction solution using manual shaking or magnetic stirring make it difficult to ensure sufficient contact between the hydroquinone and the derivatization reagent, potentially leading to uneven reactions. Furthermore, the degree of automation is low, and most existing devices are unable to achieve precise liquid addition, automatic mixing, and reaction control, resulting in poor experimental reproducibility and impacting detection efficiency.

[0005] In order to achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a hydroquinone gas chromatography testing device, comprising: a base plate, a tester is fixedly installed on the top of the base plate, a display screen is fixedly installed on the top of the tester, a top frame is provided on the top of the tester, a slide groove is provided on both sides of the inner wall of the top frame, the two slide grooves are internally slidably connected with a U-shaped frame, two limit rods are fixedly installed on the inner wall of the U-shaped frame, the outer surfaces of the two limit rods are slidably connected with a storage tank through a slider, a bump is fixedly installed on the top of the storage tank, a cylinder is fixedly installed on one side of the U-shaped frame, a plurality of mixing tanks are fixedly installed on the top of the top frame, a discharge pipe is fixedly installed on the bottom of the plurality of mixing tanks, and two limit grooves are provided on the bottom of the plurality of discharge pipes.

[0006] The technical effect of adopting the above-mentioned further scheme is: the cylinder is started by an external power supply, and the cylinder pushes the U-shaped frame to move inside the slide groove 1, so that the storage tank can be moved horizontally, and the storage tank can be pushed to slide vertically on the outer surface of the limit rod by starting the electric push rod. At this time, the storage tank can achieve plane movement of the X-axis and Y-axis. At this time, when the storage tank moves to the bottom of the batching tank, the protrusion 1 on the storage tank contacts the protrusion 2. At this time, the baffle plate moves inside the limit groove. After the baffle plate moves to one side, the reaction liquid inside the batching tank will flow into the interior of the storage tank through the discharge pipe.

[0007] As a preferred embodiment, the interior of each of the plurality of limit grooves is slidably connected with a baffle plate, the bottom of each of the plurality of baffle plates is fixedly installed with a protrusion 2, one side of each of the plurality of baffle plates is fixedly installed with a spring 1, the top of the base plate is connected with a gear through a bearing, an electric push rod is fixedly installed on one side of the storage tank, one end of the electric push rod is fixedly installed on the inner wall of the U-shaped frame, and the protrusion 1 is in contact with one of the protrusions 2.

[0008] The technical effect of adopting the above-mentioned further scheme is: under the limiting action of spring 2, the baffle plate moves inside the limiting groove, and then the baffle plate is located inside the discharge pipe again to block the mixing tank. The liquid flows into the interior of the mixing tank through the telescopic hose, and is then fused with the diphenol inside the mixing tank. When the bistrimethylsilyl trifluoroacetamide inside the mixing tank reacts with the hydroxyl group of diphenol to generate trimethylsilane derivatives, the polarity is reduced and the volatility is increased. When the acetylated derivative inside the mixing tank reacts with diphenol to generate an acetylated derivative, when the pyridine solvent inside the mixing tank reacts with diphenol, the mixing uniformity is improved and the reaction is promoted.

[0009] As a preferred embodiment, the bottom of the U-shaped frame is fixedly connected to a rack through a flat bar, the rack is meshed and connected to the outer surface of the gear, the top of the gear is provided with a belt through a pulley movable sleeve, one end of the belt is provided with a connecting rod through a pulley movable sleeve, the bottom end of the connecting rod is connected to the top of the base plate through a bearing, and the outer surface of the connecting rod is fixedly sleeved with an elliptical block.

[0010] The technical effect of adopting the above further solution is: when the U-shaped frame moves, it drives the rack at the bottom to move, and the rack drives the meshing gear to rotate. At this time, the gear drives the belt to move through the pulley. At this time, the belt drives the connecting rod to rotate through the pulley, and the connecting rod drives the elliptical block to rotate.

[0011] As a preferred embodiment, a second slide groove is provided on the top of the base plate, a linkage block is slidably connected inside the second slide groove, the elliptical block rotates on the outer surface of the linkage block, and a second spring is fixedly installed on one side of the linkage block.

[0012] The technical effect of adopting the above-mentioned further scheme is: the elliptical block rotates on the outer surface of the linkage block, and under the limitation of spring 2, the linkage block slides back and forth inside the slide groove 2, thereby driving the placement ring to move back and forth, which can evenly blend the diphenol inside the mixing tank, which is more labor-saving than manual shaking.

[0013] As a preferred embodiment, one end of the second spring is fixedly mounted on one side of the bottom plate, a placement ring is fixedly mounted on one side of the linkage block, and the top of the placement ring is detachably connected to a mixing tank.

[0014] The technical effect of adopting the above further solution is that before the mixing tank is tested, the telescopic hose can be rotated down from the interior of the mixing tank, and then the mixing tank can be placed inside the tester for testing.

[0015] As a preferred embodiment, a telescopic hose is fixedly installed on the bottom of the storage tank, and one end of the telescopic hose is rotatably connected to the interior of the mixing tank.

[0016] The technical effect of adopting the above further solution is: the telescopic hose can be rotated down from the inside of the mixing tank and the mixing tank can be placed inside the tester for testing. The telescopic hose and the mixing tank can be detachably separated, which is convenient for taking the mixing tank.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are:

[0018] 1. In an embodiment of the present invention, the interiors of the three material tanks are respectively loaded with bistrimethylsilyl trifluoroacetamide, acetylation derivatization, a sample dissolving reagent, and a derivatization reagent. Before the test, the cylinder is started by an external power supply, and the cylinder pushes the U-shaped frame to move inside the slide groove 1, so that the material storage tank can achieve horizontal movement. By starting the electric push rod, the material storage tank can be pushed to slide vertically on the outer surface of the limit rod. At this time, the material storage tank can achieve plane movement of the X-axis and Y-axis. At this time, when the material storage tank moves to the bottom of the material storage tank, the protrusion 1 on the material storage tank contacts the protrusion 2. At this time, the baffle plate moves inside the limit groove. After the baffle plate moves to one side, the reaction liquid inside the material storage tank will flow into the interior of the material storage tank through the discharge pipe. At this time, under the limiting action of the spring 2, the baffle plate moves inside the limit groove. After the baffle plate is again located inside the discharge pipe to block the material storage tank, the liquid flows into the interior of the mixing tank through the telescopic hose, and at this time, it is fused with the hydroquinone inside the mixing tank. Compared with manual operation, the amount of reaction liquid added is more accurate.

[0019] 2. In the embodiment of the present invention, when the U-shaped frame drives the rack at the bottom to move during movement, the rack drives the meshing gear to rotate, and the gear drives the belt to move through the pulley, and the belt drives the connecting rod to rotate through the pulley, and the connecting rod drives the elliptical block to rotate, and the elliptical block rotates on the outer surface of the linkage block. Under the limitation of spring 2, the linkage block slides back and forth inside the slide groove 2, thereby driving the placement ring to move back and forth, which can evenly blend the diphenol inside the mixing tank, which is more labor-saving than manual shaking. The rotating telescopic hose is detached from the inside of the mixing tank. At this time, the mixing tank can be taken out and placed inside the tester for detection, and the detection data is displayed on the display screen.

[0020] 3. In the embodiment of the present invention, when the bistrimethylsilyl trifluoroacetamide in the batching tank reacts with the hydroxyl group of hydroquinone to generate a trimethylsilane derivative, the polarity is reduced and the volatility is increased. When the acetylated derivative in the batching tank reacts with hydroquinone to generate an acetylated derivative, when the pyridine solvent in the batching tank reacts with hydroquinone, the mixing uniformity is improved and the reaction is promoted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the three-dimensional structure of a hydroquinone gas chromatography testing device provided by the present invention;

[0022] Figure 2 A schematic diagram of the top view of a hydroquinone gas chromatography testing device provided by the present invention;

[0023] Figure 3 A schematic diagram of the structure of the discharge pipe of a hydroquinone gas chromatography testing device provided by the present invention;

[0024] Figure 4 A schematic diagram of the connection structure between the telescopic hose and the storage tank of a hydroquinone gas chromatography testing device provided by the present invention;

[0025] Figure 5 A schematic diagram of the top plan structure of a hydroquinone gas chromatography test device provided by the present invention;

[0026] Figure 6 A schematic diagram of the internal structure of a top frame of a hydroquinone gas chromatography testing device provided by the present invention;

[0027] Figure 7 A schematic diagram of the bottom structure of a hydroquinone gas chromatography testing device provided by the present invention;

[0028] Figure 8 This is a schematic structural diagram of the storage tank of a hydroquinone gas chromatography testing device provided by the present invention.

[0029] Legend:

[0030] 101. Bottom plate; 102. Top frame; 103. Chute 1; 104. Cylinder; 105. U-shaped frame; 106. Electric push rod; 107. Limit rod; 108. Storage tank; 109. Bump 1; 110. Mixing tank; 111. Discharge pipe; 112. Limit groove; 113. Baffle plate; 114. Spring 1; 115. Bump 2; 116. Rack; 117. Gear; 118. Belt; 119. Connecting rod; 120. Oval block; 121. Chute 2; 122. Spring 2; 123. Linkage block; 124. Placement ring; 125. Mixing tank; 126. Telescopic hose; 127. Tester; 128. Display screen. DETAILED DESCRIPTION

[0031] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] See also Figures 1 to 8 , this embodiment provides a technical solution: a hydroquinone gas chromatography testing device, comprising: a bottom plate 101, a tester 127 is fixedly installed on the top of the bottom plate 101, a display screen 128 is fixedly installed on the top of the tester 127, a top frame 102 is provided on the top of the tester 127, and a slide groove 103 is provided on both sides of the inner wall of the top frame 102. The inside of the two slide grooves 103 is slidably connected with a U-shaped frame 105, and two limiting rods 107 are fixedly installed on the inner wall of the U-shaped frame 105. The outer surfaces of the two limiting rods 107 are slidably connected to a storage tank 108 through sliders, and a protrusion 109 is fixedly installed on the top of the storage tank 108. A cylinder 104 is fixedly installed on one side of the U-shaped frame 105, and a plurality of mixing tanks 110 are fixedly installed on the top of the top frame 102. The bottoms of the plurality of mixing tanks 110 are fixedly installed with discharge pipes 111, and the bottoms of the plurality of discharge pipes 111 are each provided with two limiting grooves 112.

[0033] During use, the cylinder 104 is started by an external power supply, and the cylinder 104 pushes the U-shaped frame 105 to move inside the slide groove 103, so that the storage tank 108 can be moved horizontally. By starting the electric push rod 106, the storage tank 108 can be pushed to slide vertically on the outer surface of the limit rod 107. At this time, the storage tank 108 can achieve plane movement of the X-axis and Y-axis. At this time, when the storage tank 108 moves to the bottom of the batching tank 110, the protrusion 109 on the storage tank 108 contacts the protrusion 2 115. At this time, the baffle plate 113 moves inside the limit groove 112. After the baffle plate 113 moves to one side, the reaction liquid inside the batching tank 110 will flow into the interior of the storage tank 108 through the discharge pipe 111.

[0034] like Figures 1 to 8 As shown, in one embodiment, a plurality of retaining grooves 112 are all slidably connected to the inside of the retaining plates 113, and the bottoms of the plurality of retaining plates 113 are fixedly installed with protrusions 115. A spring 114 is fixedly installed on one side of the plurality of retaining plates 113. An electric push rod 106 is fixedly installed on one side of the storage tank 108. One end of the electric push rod 106 is fixedly installed on the inner wall of the U-shaped frame 105. The protrusion 109 contacts one of the protrusions 115. The top of the bottom plate 101 is connected to a gear 117 through a bearing. Under the limiting action of the spring 122, the retaining plate 113 is fixed in the retaining groove 11 2 moves inside. After the baffle plate 113 is located inside the discharge pipe 111 again to block the batching tank 110, the liquid flows into the interior of the mixing tank 125 through the telescopic hose 126, and is now fused with the hydroquinone inside the mixing tank 125. When the bistrimethylsilyl trifluoroacetamide inside the batching tank 110 reacts with the hydroxyl group of the hydroquinone to generate a trimethylsilane TMS derivative, the polarity is reduced and the volatility is increased. When the acetylated derivative inside the batching tank 110 reacts with the hydroquinone to generate an acetylated derivative, when the pyridine solvent inside the batching tank 110 reacts with the hydroquinone, the mixing uniformity is improved and the reaction is promoted.

[0035] like Figures 1 to 8 As shown, in one embodiment, the bottom of the U-shaped frame 105 is fixedly connected to a rack 116 through a flat bar, and the rack 116 is meshed with the outer surface of the gear 117. The top of the gear 117 is provided with a belt 118 through a pulley movable sleeve, and one end of the belt 118 is provided with a connecting rod 119 through a pulley movable sleeve. The bottom end of the connecting rod 119 is connected to the top of the base plate 101 through a bearing, and the outer surface of the connecting rod 119 is fixedly sleeved with an elliptical block 120. When the U-shaped frame 105 moves, it drives the rack 116 at the bottom to move, and the rack 116 drives the meshed gear 117 to rotate. At this time, the gear 117 drives the belt 118 to move through the pulley. At this time, the belt 118 drives the connecting rod 119 to rotate through the pulley, and the connecting rod 119 drives the elliptical block 120 to rotate.

[0036] like Figures 1 to 8 As shown, in one embodiment, a second slide groove 121 is provided on the top of the base plate 101, and a linkage block 123 is slidably connected inside the second slide groove 121. The elliptical block 120 rotates on the outer surface of the linkage block 123. A second spring 122 is fixedly installed on one side of the linkage block 123. The elliptical block 120 rotates on the outer surface of the linkage block 123. Under the limitation of the second spring 122, the linkage block 123 slides back and forth inside the second slide groove 121, thereby driving the placement ring 124 to move back and forth, and the diphenol inside the mixing tank 125 can be evenly blended, which is more labor-saving than manual shaking.

[0037] like Figures 1 to 8 As shown, in one embodiment, one end of spring 2 122 is fixedly mounted on one side of the base plate 101, a placement ring 124 is fixedly mounted on one side of the linkage block 123, and a mixing tank 125 is detachably connected to the top of the placement ring 124. Before the mixing tank 125 is inspected, the telescopic hose 126 can be rotated down from the inside of the mixing tank 125, and then the mixing tank 125 can be placed inside the tester 127 for inspection.

[0038] like Figures 1 to 8 As shown, in one embodiment, a telescopic hose 126 is fixedly installed at the bottom of the storage tank 108, and one end of the telescopic hose 126 is rotatably connected to the interior of the mixing tank 125. The telescopic hose 126 can be rotated down from the interior of the mixing tank 125 and the mixing tank 125 can be placed inside the tester 127 for inspection. The telescopic hose 126 and the mixing tank 125 can be detachably separated to facilitate the removal of the mixing tank 125.

[0039] Working principle: When in use, the interior of the three material tanks 110 are respectively loaded with bis(trimethylsilyl)trifluoroacetamide, acetylation derivatization, reagents for dissolving samples and derivatization. Before the test, the cylinder 104 is started by an external power supply. The cylinder 104 pushes the U-shaped frame 105 to move inside the slide 103, so that the storage tank 108 can achieve horizontal movement. By starting the electric push rod 106, the storage tank 108 can be pushed to slide vertically on the outer surface of the limit rod 107. At this time, the storage tank 108 can achieve plane movement of the X-axis and Y-axis. At this time, when the storage tank 108 moves to the material tank 110 When the material is just below, the protrusion 109 on the storage tank 108 contacts the protrusion 2 115. At this time, the baffle plate 113 moves inside the limiting groove 112. After the baffle plate 113 moves to one side, the reaction liquid inside the batching tank 110 will flow into the interior of the storage tank 108 through the discharge pipe 111. At this time, under the limiting action of the spring 2 122, the baffle plate 113 moves inside the limiting groove 112. After the baffle plate 113 is located inside the discharge pipe 111 again, it blocks the batching tank 110. The liquid flows into the interior of the mixing tank 125 through the telescopic hose 126. At this time, the reaction liquid in the mixing tank 125 is mixed with the diphenol in the mixing tank 125. Fusion is carried out, when the bis(trimethylsilyl)trifluoroacetamide in the material tank 110 reacts with the hydroxyl group of hydroquinone to generate trimethylsilane TMS derivatives, which reduces polarity and increases volatility. When the acetylated derivative in the material tank 110 reacts with hydroquinone to generate acetylated derivatives, when the pyridine solvent in the material tank 110 reacts with hydroquinone, the mixing uniformity is improved and the reaction is promoted. When the U-shaped frame 105 moves, it drives the rack 116 at the bottom to move, and the rack 116 drives the meshing gear 117 to rotate. At this time, the gear 117 drives the belt 118 to move through the pulley. At this time, the belt 118 moves through the pulley. The pulley drives the connecting rod 119 to rotate, and the connecting rod 119 drives the elliptical block 120 to rotate. The elliptical block 120 rotates on the outer surface of the linkage block 123. Under the limitation of the spring 2 122, the linkage block 123 slides back and forth inside the slide groove 2 121, thereby driving the placement ring 124 to move back and forth, which can evenly blend the diphenol inside the mixing tank 125, which is more labor-saving than manual shaking. The telescopic hose 126 is rotated to detach from the inside of the mixing tank 125. At this time, the mixing tank 125 can be taken out and placed inside the tester 127 for testing, and the test data is displayed on the display screen 128.

[0040] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field and will not be described in detail here.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other form. Any person skilled in the art may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiments made in accordance with the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A gas chromatography test device for hydroquinone, comprising: The bottom plate (101) is characterized in that a tester (127) is fixedly installed on the top of the bottom plate (101), a display screen (128) is fixedly installed on the top of the tester (127), a top frame (102) is provided on the top of the tester (127), a slide groove (103) is provided on both sides of the inner wall of the top frame (102), a U-shaped frame (105) is slidably connected inside the two slide grooves (103), and two limit rods (107) are fixedly installed on the inner wall of the U-shaped frame (105) The outer surfaces of the two limiting rods (107) are slidably connected to a storage tank (108) via a slider, a protrusion (109) is fixedly installed on the top of the storage tank (108), a cylinder (104) is fixedly installed on one side of the U-shaped frame (105), a plurality of batching tanks (110) are fixedly installed on the top of the top frame (102), a discharge pipe (111) is fixedly installed on the bottom of each of the plurality of batching tanks (110), and two limiting grooves (112) are provided on the bottom of each of the plurality of discharge pipes (111); The interiors of the plurality of limiting grooves (112) are all slidably connected to a baffle plate (113), the bottoms of the plurality of baffle plates (113) are all fixedly mounted with a second protrusion (115), one side of the plurality of baffle plates (113) is fixedly mounted with a first spring (114), and the top of the bottom plate (101) is connected to a gear (117) via a bearing; An electric push rod (106) is fixedly mounted on one side of the storage tank (108), one end of the electric push rod (106) is fixedly mounted on the inner wall of the U-shaped frame (105), and the first protrusion (109) contacts one of the second protrusions (115); A telescopic hose (126) is fixedly mounted on the bottom of the storage tank (108), and one end of the telescopic hose (126) is rotatably connected to the interior of the mixing tank (125).

2. A hydroquinone gas chromatography testing device according to claim 1, characterized in that: The bottom of the U-shaped frame (105) is fixedly connected to a rack (116) via a flat bar, the rack (116) is meshedly connected to the outer surface of a gear (117), and the top of the gear (117) is provided with a belt (118) via a pulley movable sleeve.

3. A hydroquinone gas chromatography testing device according to claim 2, characterized in that: One end of the belt (118) is provided with a connecting rod (119) via a pulley movable sleeve, the bottom end of the connecting rod (119) is connected to the top of the bottom plate (101) via a bearing, and an elliptical block (120) is fixedly sleeved on the outer surface of the connecting rod (119).

4. A hydroquinone gas chromatography testing device according to claim 3, characterized in that: A second slide groove (121) is provided on the top of the bottom plate (101), and a linkage block (123) is slidably connected inside the second slide groove (121).

5. A hydroquinone gas chromatography testing device according to claim 4, characterized in that: The elliptical block (120) rotates on the outer surface of the linkage block (123), and a second spring (122) is fixedly mounted on one side of the linkage block (123).

6. A gas chromatography test device for hydroquinone according to claim 5, characterized in that: One end of the second spring (122) is fixedly mounted on one side of the bottom plate (101), and a placement ring (124) is fixedly mounted on one side of the linkage block (123).

7. A gas chromatography testing device for hydroquinone according to claim 6, characterized in that: The top of the placement ring (124) is detachably connected to a mixing tank (125).

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