Closed glycolonitrile sampling device
By designing a closed-loop hydroxyacetonitrile sampling device, the problem of traditional devices failing to isolate the system from the external environment was solved, achieving complete isolation of the solution and volatile gases, and ensuring the safety and pollution-free sampling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional hydroxyacetonitrile sampling devices fail to completely isolate the system from the external environment, resulting in leakage of solution and volatile gases during sampling operations, contaminating the workspace.
Design a closed-loop hydroxyacetonitrile sampling device, including a crystallizer, storage tank, sampling tube, and reflux tube. The sampling bottle is sealed with a rubber stopper, and the flow is controlled by a sampling pump and reflux valve to ensure the system's airtightness.
It achieves complete isolation of the solution and volatile gases during the sampling process, avoiding contamination of the workspace and improving sampling safety and efficiency.
Smart Images
Figure CN224109131U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chemical solution sampling technical field, concretely relates to airtight hydroxy acetonitrile sampling device. BACKGROUND
[0002] Hydroxy acetonitrile is an organic compound with hydroxyl and cyan group double functional groups, colorless transparent liquid at normal temperature, easily soluble in water and common organic solvents, the compound is active in chemical property, because containing unstable cyan group in molecular structure, hydroxy acetonitrile is easy to decompose and produce toxic hydrogen cyanide under acid condition or heat, thus needs to be sealed and stored in cool and dark place, the compound is mainly used as pharmaceutical intermediates, for synthesis antiviral drugs and amino acid derivatives, and can be used as chelating agent and electroplating additive in industrial field, when hydroxy acetonitrile solution is sampled, the airtightness of sampling operation needs to be guaranteed to avoid solution leakage. SUMMARY
[0003] The utility model discloses a kind of airtight hydroxy acetonitrile sampling devices, to solve the problem that the traditional hydroxy acetonitrile sampling device is proposed in above background art, due to its structural design drawbacks, whole system is not completely isolated with external environment, resulting in solution and volatile gas exhalation when sampling operation, cause pollution to workspace.
[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of airtight hydroxy acetonitrile sampling device, including crystallizer and storage tank, the upper wall of the crystallizer one side is respectively penetrated and arranged with sampling pipe and reflux pipe, the side wall of the storage tank is respectively provided with sampling pipeline and reflux pipeline on upper end and lower end close to the crystallizer, the sampling pipeline and the reflux pipeline are respectively arranged correspondingly with the sampling pipe and the reflux pipe, one side of the sampling pipeline is provided with sampling pump close to the storage tank, the lower wall of the storage tank is connected with sampling tube in middle position, the lower end of the sampling tube is provided with connecting seat, the lower end of the connecting seat is connected with sampling bottle by screw thread, the inside of the connecting seat is provided with sampling needle, the inside upper end of the sampling bottle is provided with rubber plug, the sampling needle punctures the rubber plug and is connected with the inner cavity of the sampling bottle.
[0005] Preferably, connecting flange is arranged between the sampling pipeline and the sampling pipe and between the reflux pipeline and the reflux pipe, and the sampling pipeline and the reflux pipeline are connected with the sampling pipe and the reflux pipe through the connecting flange.
[0006] Preferably, a reflux valve is arranged on the reflux pipeline near one side of the storage tank, a sampling valve is arranged on the sampling pipeline, and a pressure relief valve is arranged on the upper end of the storage tank.
[0007] Preferably, the lower end of the sampling pipeline extends into the inner lower end of the crystallizer, and the lower end of the reflux pipeline extends into the inner upper end of the crystallizer.
[0008] Preferably, a liquid level observation window is arranged on one side wall of the storage tank.
[0009] Compared with the prior art, the hydroxyl acetonitrile sampling device of the utility model has the advantages that the closed circulating sampling equipment is designed to ensure that the whole system is completely isolated from the external environment, the solution and volatile gas are prevented from leaking out during sampling operation, the sampling bottle with the rubber plug is designed to prevent the solution and volatile gas from leaking out during dismounting of the sampling bottle, and pollution of the working space is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 It is a main view of the main structure of the utility model;
[0011] Figure 2 It is a main view of the main structure of the utility model;
[0012] Figure 3 It is a main view of the main structure of the utility model;
[0013] Figure 4 It is an axonometric sectional view of the sampling bottle structure of the utility model.
[0014] In the drawing: 1-crystallizer, 2-storage tank, 3-sampling pipeline, 4-reflux pipeline, 5-sampling pipeline, 6-reflux pipeline, 7-sampling pump, 8-sampling pipeline, 9-connection seat, 10-sampling bottle, 11-sampling needle, 12-rubber plug, 13-connection flange, 14-reflux valve, 15-sampling valve, 16-pressure relief valve, 17-liquid level observation window. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the utility model will be apparently and completely described in combination with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0016] Please refer to Figures 1-4The utility model provides a kind of closed hydroxy acetonitrile sampling device, including crystallizer 1 and storage tank 2, the upper wall side of crystallizer 1 is respectively provided with sampling tube 3 and reflux tube 4, the side wall of storage tank 2 is respectively provided with sampling pipeline 5 and reflux pipeline 6 near the upper end and lower end of crystallizer 1, sampling pipeline 5 and reflux pipeline 6 are respectively correspondingly arranged with sampling tube 3 and reflux tube 4, one side of sampling pipeline 5 is provided with sampling pump 7 close to storage tank 2, sampling tube 8 is connected in the middle position of the lower wall of storage tank 2, the lower end of sampling tube 8 is provided with connecting seat 9, sampling bottle 10 is threadedly connected to the lower end of connecting seat 9, sampling needle 11 is arranged in connecting seat 9, rubber plug 12 is arranged in the inside upper end of sampling bottle 10, sampling needle 11 punctures rubber plug 12 and the inner cavity of sampling bottle 10 is connected.
[0017] When using, sampling bottle 10 is threadedly connected to the lower end of connecting seat 9, to ensure that sampling needle 11 punctures rubber plug 12 and the inner cavity of sampling bottle 10 is connected, hydroxy acetonitrile solution in crystallizer 1 is extracted into the inside of storage tank 2 through sampling tube 3 and sampling pipeline 5 by sampling pump 7 for temporary storage, then, hydroxy acetonitrile solution in the inside of storage tank 2 flows into the inside of sampling bottle 10 through sampling tube 8, to complete closed sampling of hydroxy acetonitrile solution, then sampling bottle 10 is separated from connecting seat 9 by rotating, sampling needle 11 is pulled out from the inside of rubber plug 12, the airtightness of solution in the inside of sampling bottle 10 is ensured by rubber plug 12, residual hydroxy acetonitrile solution in storage tank 2 flows back into the inside of crystallizer 1 again through reflux pipeline 6 and reflux tube 4, to avoid long-time storage of hydroxy acetonitrile solution in the inside of storage tank 2, to ensure timeliness of sampling of hydroxy acetonitrile solution.
[0018] Connecting flange 13 is arranged between sampling pipeline 5 and sampling tube 3 and between reflux pipeline 6 and reflux tube 4, sampling pipeline 5 and reflux pipeline 6 are connected with sampling tube 3 and reflux tube 4 through connecting flange 13, sampling pipeline 5 and sampling tube 3 are connected through connecting flange 13, reflux pipeline 6 and reflux tube 4 are connected through connecting flange 13, and installation and dismounting convenience between them is ensured.
[0019] Reflux valve 14 is arranged on one side of reflux pipeline 6 close to storage tank 2, to control refluxed hydroxy acetonitrile solution, sampling valve 15 is arranged on sampling tube 9, to control sampled hydroxy acetonitrile solution, pressure relief valve 16 is arranged on the upper end of storage tank 2, to ensure constant pressure in the inside of storage tank 2.
[0020] The lower end of the sampling pipe 3 extends to the inner lower end of the crystallizer 1, and the continuity of the extraction of the hydroxyacetonitrile solution can be ensured during sampling, and the lower end of the reflux pipe 4 extends to the inner upper end of the crystallizer 1, so that the refluxed hydroxyacetonitrile solution can be mixed with the solution in the crystallizer 1.
[0021] A liquid level observation window 17 is arranged on one side wall of the storage tank 2, and the solution height in the storage tank 2 is observed through the liquid level observation window 17, so that the hydroxyacetonitrile solution is prevented from being stored in the storage tank 2 for a long time.
[0022] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A closed hydroxyacetonitrile sampling device, characterized by: The application relates to a sampling device for a crystallizer, which comprises a crystallizer (1) and a storage tank (2), wherein a sampling pipe (3) and a reflux pipe (4) are respectively arranged through the upper wall of the crystallizer (1), a sampling pipeline (5) and a reflux pipeline (6) are respectively arranged on the upper and lower ends of the side wall of the storage tank (2) close to the crystallizer (1), the sampling pipeline (5) and the reflux pipeline (6) are respectively arranged in correspondence with the sampling pipe (3) and the reflux pipe (4), a sampling pump (7) is arranged on the sampling pipeline (5) close to the side of the storage tank (2), a sampling pipe (8) is connected to the middle position of the lower wall of the storage tank (2), a connecting seat (9) is arranged at the lower end of the sampling pipe (8), a sampling bottle (10) is threadedly connected to the lower end of the connecting seat (9), a sampling needle (11) is arranged in the connecting seat (9), a rubber plug (12) is arranged at the upper end of the sampling bottle (10), the sampling needle (11) penetrates the rubber plug (12) and is connected to the inner cavity of the sampling bottle (10).
2. The closed hydroxyacetonitrile sampling device of claim 1, wherein: Connecting flanges (13) are arranged between the sampling pipeline (5) and the sampling pipe (3) and between the reflux pipeline (6) and the reflux pipe (4), and the sampling pipeline (5) and the reflux pipeline (6) are respectively connected to the sampling pipe (3) and the reflux pipe (4) through the connecting flanges (13).
3. The closed hydroxyacetonitrile sampling device of claim 1, wherein: A reflux valve (14) is arranged on the reflux pipeline (6) close to the side of the storage tank (2), a sampling valve (15) is arranged on the sampling pipe (8), and a pressure relief valve (16) is arranged at the upper end of the storage tank (2).
4. The closed hydroxyacetonitrile sampling device of claim 1, wherein: The lower end of the sampling pipe (3) extends into the inner lower end of the crystallizer (1), and the lower end of the reflux pipe (4) extends into the inner upper end of the crystallizer (1).
5. The closed hydroxyl acetonitrile sampling device of claim 1, wherein: A liquid level observation window (17) is arranged on the side wall of the storage tank (2).