A simple thin-layer chromatography spray device

Abstract

The application discloses a simple thin-layer color developing spray device, which comprises a test box. The thin-layer plate and a spray assembly are arranged in the test box. During the experiment, a worker observes the spray operation on the thin-layer plate through an observation window, so that the worker's health is prevented from being harmed by corrosive and stimulating components in a color developing agent. The first motor drives the spray assembly to comprehensively and uniformly spray the thin-layer plate with the color developing agent, so that uneven atomization caused by manual spraying is avoided, the thin-layer plate is not excessively sprayed in some areas, and uneven spot color development is avoided. A drying assembly is arranged on the top of the test box, so that the sprayed thin-layer plate can be dried, the color developing agent in the test box is ensured to be dried, and harm of toxic, corrosive and stimulating components in the color developing agent to the experimenter is prevented.

Description

Technical Field

[0001] This application relates to the field of chemical laboratory equipment technology, specifically to a simple thin-layer colorimetric spray device. Background Technology

[0002] Thin-layer chromatography (TLC) involves coating a suitable stationary phase onto a glass, plastic, or aluminum substrate to form a uniform thin layer. After spotting and development, the ratio shift (Rf) of the chromatogram is compared with the Rf of a suitable reference substance obtained using the same method. This comparison allows for the identification of pharmaceuticals, the detection of impurities, or the determination of content. TLC is a crucial experimental technique for the rapid separation and qualitative analysis of small amounts of substances and is also used to monitor reaction progress. Due to its wide applicability, simplicity, high efficiency, and economy, TLC has become an extremely important key technique in laboratories for the rapid separation and qualitative analysis of small amounts of substances.

[0003] Currently, glass spray bottles are commonly used in laboratories as colorimetric devices for thin-layer chromatography. However, hand-held sprayers atomize the spray unevenly, causing excessive spraying in certain areas of the thin-layer plate and resulting in uneven color development of the spots. At the same time, since most colorimetric reagents contain toxic, corrosive, and irritating components, laboratory personnel are prone to inhaling them when spraying them by hand, which can easily cause personal injury and pollution. Utility Model Content

[0004] This application provides a simple thin-layer colorimetric spray device, which solves the problems of uneven atomization of existing hand-sprayed devices, resulting in excessive local spraying on the thin-layer plate and uneven color development of spots; at the same time, since most colorimetric agents contain toxic, corrosive and irritating components, they are easy for experimental personnel to inhale when spraying by hand, and can easily cause personal injury and pollution.

[0005] This application provides a simple thin-layer colorimetric spray device, including a test chamber. A drying component is located at the top of the test chamber. A limiting rod is installed inside the test chamber, and a moving guide rail is slidably mounted on the limiting rod. A spray component is movably mounted on the moving guide rail via a hanging rod. A rotating screw is threaded onto the moving guide rail, and a first motor is connected to the end of the rotating screw. A support plate is movably mounted at the bottom of the test chamber, and a thin-layer plate is mounted on the support plate via a fixing component. A door is located on one side wall of the test chamber, and a first observation window is opened on the door. A second observation window is located on the top of the test chamber, and support legs are located at the bottom of the test chamber.

[0006] Preferably, a support plate is fixedly installed at the bottom of the boom, a water pump is fixedly installed at the top of the support plate, a container tank is fixedly installed at the top of the support plate, and the water pump is connected to the spray assembly.

[0007] Preferably, a movable slider is slidably disposed within the movable guide rail, the lifting rod is threadedly connected to the movable slider, a positioning strip is disposed below the movable guide rail, a positioning groove is disposed through the positioning strip, and the lifting rod is in close contact with the inner wall of the positioning groove.

[0008] Preferably, the boom is provided with a drag-reducing bearing, and the outer ring of the drag-reducing bearing is in close and sliding contact with the inner wall of the positioning groove.

[0009] Preferably, the drying assembly includes a hot air duct disposed on the inner wall of the top of the test chamber, the inner walls of the two sides of the hot air duct are connected to the same support plate, the inner walls of the two sides of the hot air duct are connected to the same electromagnetic heater, and the electromagnetic heater is located directly below the support plate.

[0010] Preferably, a second motor is fixed in the middle of the top outer wall of the support plate, and the output shaft of the second motor is connected to a fan blade via a coupling.

[0011] Preferably, the fixing component includes movable slots opened on both sides of the support plate, two springs are fixedly installed inside one side of the movable slot, and a support frame is provided inside the movable slot, with the support frame and the springs fixedly installed.

[0012] Preferably, a positioning block is fixedly installed on one side of the inside of the support frame, and an anti-slip plate is fixedly installed on one side of the inside of the support frame.

[0013] Compared with the prior art, the simple thin-layer colorimetric spray device provided in this application has at least the following beneficial effects: 1. By placing the thin-layer plate and spray assembly inside the test chamber, during the experiment, the staff can observe the spraying operation on the thin-layer plate through the observation window, avoiding the harm to the staff's health caused by the color developer containing corrosive and irritating ingredients; at the same time, the first motor drives the spray assembly to ensure that the thin-layer plate is sprayed with the color developer solvent comprehensively and evenly, avoiding the uneven atomization caused by manual spraying, which may result in excessive local spraying of the thin-layer plate and uneven spot color development. 2. A drying component is installed on the top of the test chamber to facilitate the drying of the sprayed thin-layer plate, ensuring that the color developer is completely dried inside the test chamber, and preventing the toxic, corrosive and irritating components of the color developer from causing harm to the experimental personnel. 3. Use fixing components to fix the thin-layer plate. After the test, the chamber door can be opened and the thin-layer plate can be taken out of the test chamber, which makes it easy to replace the thin-layer plate. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 An external structural diagram of a simplified thin-layer colorimetric spray device provided for this application; Figure 2 Internal structural diagram of a simplified thin-layer colorimetric spray device provided for this application; Figure 3 A schematic diagram of a positioning strip structure provided in this application; Figure 4 A schematic diagram of a placement plate structure provided in this application; Figure 5 for Figure 4 Enlarged view of point A in the middle; In the diagram: 1. Test chamber; 2. Drying assembly; 201. Hot air duct; 202. Second motor; 203. Fan blade; 204. Support plate; 205. Electromagnetic heater; 3. Limiting rod; 4. First motor; 5. Rotating lead screw; 6. Moving guide rail; 7. Moving slider; 8. Positioning bar; 9. Positioning groove; 10. Hanging rod; 11. Drag-reducing bearing; 12. Support plate; 13. Container tank; 14. Water pump; 15. Spray assembly; 16. Thin-layer plate; 17. Placement plate; 170. Insertion block; 171. Moving groove; 172. Spring; 173. Support frame; 174. Positioning block; 175. Anti-slip plate; 18. Support leg; 19. Chamber door; 20. First observation window; 21. Second observation window. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0017] The core of this application is to provide a simple thin-layer colorimetric spray device, which solves the problems of uneven atomization of hand-held spray devices in the prior art, resulting in excessive local spraying on the thin-layer plate and uneven color development of spots; at the same time, since most colorimetric agents contain toxic, corrosive and irritating components, they are easy for experimental personnel to inhale when spraying by hand, and can easily cause personal injury and pollution.

[0018] Figure 1 This application provides an external structural diagram of a simplified thin-layer colorimetric spray device. Figure 2 This application provides an internal structural diagram of a simplified thin-layer colorimetric spray device. Figure 3 A side view of a simplified thin-layer colorimetric spray device provided for this application, see [link to application]. Figures 1 to 3 As shown.

[0019] A simple thin-layer colorimetric spray device includes a test chamber 1. The interior of the test chamber 1 is made of corrosion-resistant and oxidation-resistant materials. A drying component 2 is installed at the top of the interior of the test chamber 1 to dry the thin-layer plate 16, ensuring that the colorimetric agent is completely dried inside the test chamber 1, preventing the toxic, corrosive, and irritating components of the colorimetric agent from harming workers. A limiting rod 3 is installed inside the test chamber 1, and a moving guide rail 6 is slidably mounted on the limiting rod 3. A spray component 15 is movably mounted on the moving guide rail 6 via a hanging rod 10. A rotating screw 5 is threaded onto the moving guide rail 6, and rotating the screw 5 selects a reciprocating screw, thus facilitating continuous spraying during the experiment. The first motor 4 is connected to the end of the rotating screw 5. Under the drive of the first motor 4, the rotating screw 5 rotates. The moving guide rail 6, which is threadedly connected to the rotating screw 5, cannot rotate with the rotating screw 5 due to the limiting action of the limiting rod 3. The moving guide rail 6 can only move along the length direction of the rotating screw 5, and thus the spray assembly 15 moves along the length direction of the rotating screw 5 to achieve uniform spraying.

[0020] To facilitate the replacement of the thin-layer plate 16, a placement plate 17 is movably provided at the bottom of the test chamber 1. In actual setup, a connector block 170 is fixed to the bottom of the test chamber 1, and the bottom of the placement plate 17 has a connector groove adapted to the connector block 170. During use, simply align the connector groove at the bottom of the placement plate 17 with the connector block 170. The thin-layer plate 16 is mounted on the placement plate 17 via a fixing assembly. A door 19 is provided on one side wall of the test chamber 1. In actual use, open the door 19, place the thin-layer plate 16 on the placement plate 17, then fix the thin-layer plate 16 using the fixing assembly, close the door 19, and conduct the colorimetric spray experiment. For easy observation, a first observation window 20 is provided on the door 19, a second observation window 21 is provided on the top of the test chamber 1, and support legs 18 are provided at the bottom of the test chamber 1. The support leg 18 is an adjustable support leg. Adjusting the height of the support leg 18 raises the rear of the test chamber 1, facilitating observation through the first observation window 20 and the second observation window 21. The specific structure of the support leg 18 can be referenced from existing technology. At the same time, the placement plate 17 is detachably installed inside the test chamber 1, facilitating cleaning of the placement plate 17 and the interior of the test chamber 1.

[0021] Furthermore, a support plate 12 is fixedly installed at the bottom of the boom 10, a water pump 14 is fixedly installed at the top of the support plate 12, and a container tank 13 is fixedly installed at the top of the support plate 12. The water pump 14 is connected to the spray assembly 15. The front of the container tank 13 is engraved with a scale, and the container tank 13 is a glass container. The water pump 14 supplies raw materials to the spray assembly 15. The spray assembly 15 includes a delivery pipe and an atomizing nozzle. One end of the delivery pipe is fixedly installed to the atomizing nozzle, and the other end is fixedly connected to the water pump 14. The mist-like spraying method makes the coating more uniform. The water pump 14 is fixedly connected to the container tank 13 via a hose. The support plate 12 has an internal slot, and the shape of the slot is adapted to the spray assembly 15.

[0022] Preferably, a movable slider 7 is slidably disposed within the movable guide rail 6, and the lifting rod 10 is threadedly connected to the movable slider 7. A positioning strip 8 is disposed below the movable guide rail 6, and a positioning groove 9 is disposed through the positioning strip 8. The lifting rod 10 is in close and slidable contact with the inner wall of the positioning groove 9. The shape of the positioning groove 9 is the swing path of the spray assembly 15 during its movement along the length of the rotating screw 5. When the lifting rod 10 moves along the travel direction of the movable guide rail 6, the lifting rod 10 simultaneously swings along the shape of the positioning groove 9, thereby enabling uniform spraying of the thin-layer plate 16 and improving the accuracy of the test.

[0023] It should be noted that the length direction of the moving guide rail 6 is perpendicular to the length direction of the positioning bar 8. When the moving guide rail 6 moves along the length direction of the rotating screw 5, the hanging rod 10 moves along the shape of the positioning groove 9 and in a direction perpendicular to the moving guide rail 6, which can realize large-area spraying in the plane, thereby improving the accuracy of the test results.

[0024] Preferably, the boom 10 is provided with a drag-reducing bearing 11, and the outer ring of the drag-reducing bearing 11 is in close contact with the inner wall of the positioning groove 9. The drag-reducing bearing 11 can reduce the wear between the boom 10 and the inner wall of the positioning groove 9, thus playing a certain protective role.

[0025] In the above embodiment, the drying assembly 2 includes a hot air duct 201 disposed on the inner wall of the top of the test chamber 1. The inner walls of both sides of the hot air duct 201 are connected to the same support plate 204, and the inner walls of both sides of the hot air duct 201 are connected to the same electromagnetic heater 205. The structure and working principle of the electromagnetic heater 205 can be found in the prior art. The electromagnetic heater 205 provides heat energy to the test chamber 1 and is located directly below the support plate 204. Simultaneously, to accelerate the drying of the thin sheet 16, preferably, a second motor 202 is fixed to the middle of the outer wall of the top of the support plate 204. The output shaft of the second motor 202 is connected to a fan blade 203 via a coupling. The second motor 202 drives the fan blade 203 to rotate, generating airflow. This airflow, through the electromagnetic heater 205, generates hot air that blows onto the thin sheet 16, drying it.

[0026] The fixing assembly includes movable slots 171 on both sides of the placement plate 17. Two springs 172 are fixedly installed inside one side of each movable slot 171. A support frame 173 is provided inside the movable slot 171, and the support frame 173 is fixedly installed with the springs 172. In actual use, the operator pulls the support frame 173 to place the thin sheet 16 on the top surface of the placement plate 17. After releasing the support frame 173, the springs 172 rebound, causing the support frame 173 to fix and restrict the thin sheet 16. To further improve the stability of the thin sheet 16 during use, preferably, a positioning block 174 and an anti-slip plate 175 are fixedly installed inside one side of the support frame 173. The positioning block 174 and the anti-slip plate 175 further fix the thin sheet 16.

[0027] The simple thin-layer colorimetric spray device provided in this application operates as follows: Upon opening the chamber door 19, the operator pulls the support frame 173, placing the thin-layer plate 16 on the top surface of the placement plate 17. After releasing the support frame 173, the spring 172 rebounds, causing the support frame 173 to fix and restrict the thin-layer plate 16. Upon closing the chamber door 19, the first motor 4 drives the rotating screw 5 to rotate. The moving guide rail 6, threadedly connected to the rotating screw 5, cannot rotate with the rotating screw 5 due to the limiting rod 3. The moving guide rail 6 can only move along the length direction of the rotating screw 5, thereby moving the spray assembly 15 along the length direction of the rotating screw 5. Simultaneously, the hanging rod 10 swings along the shape of the positioning groove 9, enabling uniform spraying of the thin-layer plate 16 to improve the accuracy of the experiment. During the experiment, the operator observes the spraying operation on the thin-layer plate 16 through the first observation window 20 and the second observation window 21, avoiding any harm to the operator's health caused by the colorimetric agent containing corrosive and irritating components. The second motor 202 drives the fan blade 203 to rotate and generate wind. The wind generates hot air through the electromagnetic heater 205 and blows it onto the thin plate 16 to dry it.

[0028] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and incorporate common knowledge or customary techniques in the art disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of this application is indicated by the claims.

[0029] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The above embodiments of this application do not constitute a limitation on the scope of protection of this application.

Claims

1. A simple thin-layer color-developing spray device, characterized in that, include: The test chamber (1) has a drying component (2) at the top inside. The test chamber (1) has a limiting rod (3) inside. A moving guide rail (6) is slidably mounted on the limiting rod (3). A spray component (15) is movably mounted on the moving guide rail (6) via a hanging rod (10). A rotating screw (5) is threaded on the moving guide rail (6). A first motor (4) is connected to the end of the rotating screw (5). A placement plate (17) is movably mounted at the bottom of the test chamber (1). A thin plate (16) is mounted on the placement plate (17) via a fixing component. A door (19) is mounted on one side wall of the test chamber (1). A first observation window (20) is opened on the door (19). A second observation window (21) is mounted on the top of the test chamber (1). A support leg (18) is mounted on the bottom of the test chamber (1).

2. A simple thin layer chromatography spray device as claimed in claim 1, wherein, A support plate (12) is fixedly installed at the bottom of the boom (10), a water pump (14) is fixedly installed at the top of the support plate (12), a container tank (13) is fixedly installed at the top of the support plate (12), and the water pump (14) is connected to the spray assembly (15).

3. A simple thin layer chromatography spray device as claimed in claim 1, wherein, A movable slider (7) is slidably disposed inside the movable guide rail (6), and the hanging rod (10) is threadedly connected to the movable slider (7). A positioning strip (8) is disposed below the movable guide rail (6), and a positioning groove (9) is provided through the positioning strip (8). The hanging rod (10) is in contact with the inner wall of the positioning groove (9) and slides in contact.

4. A simple thin layer chromatography spray device as claimed in claim 3, wherein, The rod (10) is provided with a drag-reducing bearing (11), and the outer ring of the drag-reducing bearing (11) is in contact with the inner wall of the positioning groove (9).

5. A simple thin-layer color-developing spray device according to claim 1, characterized in that, The drying assembly (2) includes a hot air duct (201) disposed on the inner wall of the top of the test chamber (1). The inner walls of the two sides of the hot air duct (201) are connected to the same support plate (204). The inner walls of the two sides of the hot air duct (201) are connected to the same electromagnetic heater (205). The electromagnetic heater (205) is located directly below the support plate (204).

6. A simple thin-layer color-developing spray device according to claim 5, characterized in that, A second motor (202) is fixed in the middle of the top outer wall of the support plate (204), and the output shaft of the second motor (202) is connected to a fan blade (203) via a coupling.

7. A simple thin layer chromatography spray device as claimed in claim 1, wherein, The fixing component includes a movable slot (171) opened on both sides of the placement plate (17). Two springs (172) are fixedly installed on one side of the inside of the movable slot (171). A support frame (173) is provided inside the movable slot (171). The support frame (173) is fixedly installed with the springs (172).

8. A simple thin layer chromatography spray device according to claim 7, wherein, A positioning block (174) is fixedly installed on one side of the inside of the support frame (173), and an anti-slip plate (175) is fixedly installed on one side of the inside of the support frame (173).

Images