A PTLC drying tank
By introducing a light-transmitting surface and a desiccant container into the PTLC drying tank, observation without opening the lid and isolation of the desiccant can be achieved, solving the problems of moisture intrusion and contamination in traditional PTLC drying tanks, and improving separation purity and reproducibility.
Patent Information
- Application Number
- CN202521378536.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-02
- Publication Date
- 2026-05-26
- Estimated Expiration
- 2035-07-02
AI Technical Summary
Traditional PTLC display tanks require repeated opening and observation during the drying process, which leads to the intrusion of ambient moisture, affecting separation purity and reproducibility. Furthermore, the desiccant may contaminate the PTLC plates.
A PTLC drying tank with a light-transmitting surface and a desiccant container was designed to enable in-situ observation without opening the lid. The desiccant is isolated from the PTLC plate, the separation progress can be observed through the light-transmitting surface, and the tank lid is sealed to prevent external moisture from entering and maintain a stable low-humidity environment.
This ensures that the PTLC plates are dried in a stable, low-humidity environment, preventing contamination and improving separation purity and reproducibility.
Smart Images
Figure CN224270242U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PTLC drying technology, and in particular to a PTLC drying tank. Background Technology
[0002] Preparative thin-layer chromatography (PTLC) is an indispensable purification technique in the separation of natural products and organic synthesis.
[0003] Traditional PTLC tanks require drying after separation to remove residual solvent. However, existing equipment has significant drawbacks: the drying process necessitates repeated opening of the tank to monitor separation progress, leading to continuous intrusion of ambient moisture into the tank. Humidity fluctuations can cause PTLC plates to absorb moisture and deliquesce, resulting in compound diffusion or degradation (such as water-sensitive substances like terpenes and alkaloids), severely impacting separation purity and reproducibility. Furthermore, the desiccant typically falls directly to the bottom of the tank, potentially contaminating the PTLC plates. Therefore, improvements are necessary. Utility Model Content
[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a PTLC drying and display cylinder that enables in-situ observation without opening the cover through two first light-transmitting surfaces; a desiccant container stores the desiccant, facilitating directional humidity control, and the desiccant is isolated from the PTLC plate to prevent desiccant contamination of the PTLC plate; the cylinder cover seals the cylinder body to isolate external moisture, ensuring that the PTLC plate completes drying in a stable low-humidity environment, thus ensuring separation purity and reproducibility.
[0005] To achieve the above objectives, the present invention provides a PTLC drying and spreading cylinder, comprising a cylinder body and a cylinder cover, wherein the cylinder cover covers the open end of the cylinder body;
[0006] The cylinder body is provided with a first light-transmitting surface;
[0007] The cylinder body is equipped with a support structure for supporting the PTLC plate and a desiccant container for storing the desiccant.
[0008] Preferably, the support structure is arranged perpendicular to the inner bottom wall of the cylinder.
[0009] Preferably, the front side of the support structure is provided with a slip limiting member to restrict the PTLC plate, and the slip limiting member is fixed to the inner bottom wall of the cylinder body.
[0010] Preferably, the length of the slip limiting element is less than or equal to the length of the support structure.
[0011] Preferably, the desiccant container has an internal cavity for storing the desiccant, and the surface of the desiccant container has through-holes for ventilation.
[0012] Preferably, a hinge is provided between the cylinder body and the cylinder head.
[0013] Preferably, the cylinder body has a raised strip at the open end and the cylinder cover has a groove. When the cylinder cover is placed over the open end of the cylinder body, the raised strip is inserted into the groove.
[0014] Preferably, the cylinder head is provided with a second light-transmitting surface.
[0015] The beneficial effects of this invention are as follows: in-situ observation without opening the cover is achieved through two first light-transmitting surfaces; the desiccant container stores the desiccant, which facilitates directional humidity control and isolates the desiccant from the PTLC plate, preventing the desiccant from contaminating the PTLC plate; the cylinder cover seals the cylinder body to isolate external moisture, ensuring that the PTLC plate completes drying in a stable low-humidity environment, thus ensuring separation purity and reproducibility. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the sealed structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the open state structure of this utility model.
[0018] The reference numerals in the figures include:
[0019] 1. Cylinder body; 11. First light-transmitting surface; 12. Support structure; 13. Desiccant container; 131. Cavity; 132. Vent hole; 14. Anti-slip component; 15. Raised strip;
[0020] 2. Cylinder head; 21. Groove; 22. Second light-transmitting surface;
[0021] 3. Hinge. Detailed Implementation
[0022] The present invention will now be described in detail with reference to the accompanying drawings.
[0023] like Figure 1 and Figure 2 As shown, a PTLC drying tank of this utility model includes a tank body 1 and a tank cover 2, with the tank cover 2 covering the open end of the tank body 1; the cover and the tank body 1 form a sealed space. This seals the inside of the tank to prevent moisture and isolates it from external humidity interference.
[0024] The cylinder body 1 is provided with a first light-transmitting surface 11; the light-transmitting material of the first light-transmitting surface 11 allows light to penetrate the cylinder body, making the internal PTLC plate visible. The separation process can be observed in situ without opening the cap, avoiding moisture intrusion caused by opening the cap and ensuring the stability of the separation environment.
[0025] The cylinder body 1 is equipped with a support structure 12 for supporting the PTLC plate and a desiccant container 13 for storing the desiccant. The PTLC plate is fixed in position by the physical support of the support structure 12, thus fixing the PTLC plate inside the cylinder body 1 and preventing the PTLC plate from shifting.
[0026] The desiccant container 13 isolates the desiccant from the PTLC plates, facilitating the desiccant's adsorption of moisture inside the tank, maintaining a low humidity environment, and preventing compound deliquescence. It also prevents the desiccant from contacting and contaminating the PTLC plates.
[0027] The first light-transmitting surface 11 can be a transparent glass plate or an optical-grade acrylic plate. The supporting structure 12 is a supporting plate or a supporting frame.
[0028] In use, open the cylinder cover 2 to expose the opening of the cylinder body 1, place the PTLC plate with completed chromatographic development on the support structure 12 or lean it against the support structure 12, fill the desiccant container 13 with desiccant (such as silica gel / molecular sieve), close the cylinder cover 2, and the cylinder cover 2 and cylinder body 1 form an airtight environment; the external light source (ultraviolet lamp / visible light) penetrates the first light-transmitting surface 11 to directly irradiate the PTLC plate, and the operator observes the changes of compound spots on the PTLC plate in real time through the first light-transmitting surface 11. The residual water of the solvent evaporates, the desiccant adsorbs the evaporated water, and the cylinder cover 2 continuously seals the opening of the cylinder body 1 to prevent external moisture from seeping into the cylinder body 1; after confirming that the sample is completely dry (no diffusion of spots) through the first light-transmitting surface 11, open the cylinder cover 2 to take out the high-purity sample, and replace the saturated desiccant in the desiccant container 13 for the next use.
[0029] This application enables in-situ observation without opening the cover through the first light-transmitting surface 11; the desiccant container 13 stores the desiccant, which facilitates directional humidity control and isolates the desiccant from the PTLC plate to prevent the desiccant from contaminating the PTLC plate; the cylinder cover 2 seals the cylinder body 1 to isolate external moisture, ensuring that the PTLC plate completes drying in a stable low-humidity environment, thus ensuring separation purity and reproducibility.
[0030] like Figure 1 and Figure 2 As shown, in this embodiment, the support structure 12 is perpendicular to the inner bottom wall of the cylinder body 1. This fixes the support structure 12 inside the cylinder body 1, facilitating the support of the PTLC plate.
[0031] like Figure 1 and Figure 2 As shown, in this embodiment, a slip limiting member 14 is provided on the front side of the support structure 12 to restrict the PTLC plate. The slip limiting member 14 rigidly blocks the forward displacement of the PTLC plate. This prevents the PTLC plate leaning against the support structure 12 from sliding due to vibration or movement, and avoids misalignment of the PTLC plate spots or collision between the PTLC plate and other structures.
[0032] The limited-slip element 14 is fixed to the inner bottom wall of the cylinder body 1, so that the bottom of the limited-slip element 14 is anchored to provide shear force support. This enhances the overall stability of the limited-slip element 14 and can withstand the interference of handling or table vibration.
[0033] Among them, the limiting component 14 is a limiting strip or a limiting block.
[0034] like Figure 1 and Figure 2 As shown, in this embodiment, the length of the slip limiting member 14 is less than or equal to the length of the support structure 12. This ensures that the lateral coverage area of the slip limiting member 14 does not exceed the support platform. This avoids operational interference when placing or removing the PTLC board between the slip limiting member 14 and the support structure 12, ensuring unobstructed placement or removal of the PTLC board.
[0035] like Figure 2 As shown, the desiccant container 13 in this embodiment has a cavity 131 for storing desiccant inside, and a vent hole 132 is provided through the surface of the desiccant container 13. The desiccant container 13 stores desiccant through the cavity 131, and the desiccant adsorbs moisture in the cylinder through the vent hole 132.
[0036] like Figure 2 As shown, a hinge 3 is provided between the cylinder body 1 and the cylinder head 2 in this embodiment. The cylinder body 1 and the cylinder head 2 are hinged by the hinge 3, which facilitates opening or closing the cylinder head 2.
[0037] like Figure 2 As shown, in this embodiment, the cylinder body 1 has a raised strip 15 at its open end, and the cylinder head 2 has a groove 21. When the cylinder head 2 is placed over the open end of the cylinder body 1, the raised strip 15 is inserted into the groove 21. The cooperation between the raised strip 15 and the groove 21 increases the airtightness of the connection between the cylinder body 1 and the cylinder head 2.
[0038] like Figure 1 and Figure 2 As shown, the cylinder head 2 in this embodiment is provided with a second light-transmitting surface 22. Through the second light-transmitting surface 22, changes in compound spots on the PTLC plate can be observed in real time from multiple angles, eliminating blind spots in observation.
[0039] The second light-transmitting surface 22 can be a transparent glass plate or an optical grade acrylic plate.
[0040] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of this utility model. The content of this specification should not be construed as a limitation of this utility model.
Claims
1. A PTLC drying and developing tank, characterized in that, It includes a cylinder body (1) and a cylinder head (2), wherein the cylinder head (2) covers the open end of the cylinder body (1); The cylinder body (1) is provided with a first light-transmitting surface (11); The cylinder body (1) is provided with a support structure (12) for supporting the PTLC plate and a desiccant container (13) for storing desiccant.
2. The PTLC drying and developing cylinder according to claim 1, characterized in that, The support structure (12) is perpendicular to the inner bottom wall of the cylinder body (1).
3. A PTLC drying and developing tank according to claim 1 or 2, characterized in that, The front side of the support structure (12) is provided with a slip limiting member (14) to restrict the PTLC plate, and the slip limiting member (14) is fixed to the inner bottom wall of the cylinder body (1).
4. A PTLC drying and developing tank according to claim 3, characterized in that, The length of the slip limiting component (14) is less than or equal to the length of the support structure (12).
5. A PTLC drying and developing tank according to claim 1, characterized in that, The desiccant container (13) has a cavity (131) for storing desiccant inside, and a vent hole (132) is provided through the surface of the desiccant container (13).
6. A PTLC drying and developing cylinder according to claim 1, characterized in that, A hinge (3) is provided between the cylinder body (1) and the cylinder head (2).
7. A PTLC drying and developing cylinder according to claim 1, characterized in that, The cylinder body (1) has a protrusion (15) at its open end, and the cylinder cover (2) has a groove (21). When the cylinder cover (2) is placed over the open end of the cylinder body (1), the protrusion (15) is inserted into the groove (21).
8. A PTLC drying and developing cylinder according to claim 1, characterized in that, The cylinder head (2) is provided with a second light-transmitting surface (22).