Sealed sampling device for phenylethylamine rectifying tower
By designing a sealed sampling device, the sampling tube and sampling bottle are connected and sealed in a controlled manner using a connecting cap and a plug. This solves the problems of purity loss and environmental pollution during the phenylethylamine sampling process, ensuring the safety and purity of the sampling process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HAICHENG LIQI CARBON CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-04-24
AI Technical Summary
Phenylacetamine is prone to reacting with carbon dioxide in the air during sampling, which affects the purity of the sample and poses a hazard to operators. Furthermore, unsealed sampling can pollute the environment.
A sealed sampling device was designed, including a sampling tube and a sampling bottle. The sampling tube and the sampling bottle are controlled to be connected and sealed by a through hole and a plug in the connecting cap. The gas in the bottle is vented by a piston to ensure that the sampling process is carried out in a closed environment.
This achieves a sealed sampling process for phenylethylamine, preventing it from reacting with carbon dioxide in the air, protecting sample purity, avoiding environmental pollution, and ensuring the safety of operators.
Smart Images
Figure CN224163404U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of distillation equipment technology, specifically a sealed sampling device for a phenylethylamine distillation column. Background Technology
[0002] Distillation columns are a commonly used separation device in the chemical industry, also known as distillation equipment. In the production process of phenylethylamine, distillation is one of the most critical processes for the final high-purity extraction. Sampling is a key step in testing whether the produced product meets the requirements of the production process.
[0003] Phenylethylamine is a strong alkaline substance that can absorb carbon dioxide from the air to form the corresponding carbonate, which has a fishy odor. If the sampling process is not sealed, it will affect the purity of the sample, pollute the environment, and harm the health of the operators. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a sealed sampling device for a phenylethylamine distillation column, thereby solving the problems mentioned in the background section.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a sealed sampling device for a phenylethylamine distillation column, comprising a sampling tube and a sampling bottle, the sampling bottle having a nozzle, a connecting cap threadedly connected to the nozzle, a threaded cylinder fixedly mounted on the sampling tube, the connecting cap being threadedly connected to the threaded cylinder, a piston slidably mounted inside the sampling bottle, a through hole for connecting the sampling tube and the sampling bottle being provided inside the connecting cap, and a plug capable of sealing the through hole being provided inside the connecting cap, the plug being able to move and open the through hole when the connecting cap is screwed into the threaded cylinder.
[0006] Preferably, an installation cylinder is provided inside the connecting cover below the through hole. A limit cylinder is fixedly installed inside the installation cylinder by a connecting rod. A limit rod that can slide up and down is provided inside the limit cylinder. A plug is fixedly connected to the upper end of the limit rod. A spring is provided on the outside of the limit cylinder. The two ends of the spring abut against the upper part of the connecting rod and the lower part of the plug, respectively. A push rod is fixedly installed inside the threaded cylinder. The push rod can pass through the through hole and abut against the plug.
[0007] Preferably, the through hole is conical, and the plug is provided with a conical block that matches the through hole.
[0008] Preferably, an extension tube is fixedly provided on the connecting cover, the extension tube can be inserted into the sampling tube, and a sealing ring is provided on the outer wall of the extension tube.
[0009] Preferably, the bottom of the sampling bottle is open, and a handle is provided inside the piston.
[0010] Preferably, the bottom of the sampling bottle is threaded with an annular cap.
[0011] Preferably, the sampling tube is equipped with a valve.
[0012] Preferably, a pair of wrenches are fixedly provided on both sides of the connecting cover.
[0013] Preferably, the sampling bottle is made of transparent material and has graduation lines on its body.
[0014] Beneficial effects
[0015] This invention provides a sealed sampling device for a phenylethylamine distillation column, which has the following advantages: the device can expel air from the sampling bottle by setting a piston inside the bottle, preventing phenylethylamine from contacting carbon dioxide in the air when it is injected into the bottle. The connecting cap can be switched between open and closed states by using a through hole and a plug inside the connecting cap. When the connecting cap is screwed into the threaded cylinder, the sampling tube and the sampling bottle can be connected. When the connecting cap is screwed out of the threaded cylinder, the sampling bottle can be sealed, so that the phenylethylamine in the sampling bottle is in a closed environment. Attached Figure Description
[0016] Figure 1 This is the front view of the present invention;
[0017] Figure 2 This is a front view after the disassembly of this utility model;
[0018] Figure 3 for Figure 1 A magnified view of part A in the image;
[0019] Figure 4 for Figure 2 A magnified view of part B in the image.
[0020] In the diagram: 1. Sampling tube; 2. Sampling bottle; 3. Bottle nozzle; 4. Connecting cap; 5. Threaded cylinder; 6. Piston; 7. Through hole; 8. Mounting cylinder; 9. Limiting cylinder; 10. Limiting rod; 11. Plug; 12. Spring; 13. Push rod; 14. Extension cylinder; 15. Handle; 16. Ring cap; 17. Valve; 18. Wrench; 19. Scale line. Detailed Implementation
[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0022] Please see Figure 1-4This utility model provides a technical solution: a sealed sampling device for a phenylethylamine distillation column, including a sampling tube 1 and a sampling bottle 2. The sampling bottle 2 is provided with a bottle mouth 3, and a connecting cap 4 is threadedly connected to the bottle mouth 3. A threaded cylinder 5 is fixedly provided on the sampling tube 1. The connecting cap 4 can be threadedly connected to the threaded cylinder 5. A piston 6 is slidably provided inside the sampling bottle 2. By pushing the piston 6 to the top of the sampling bottle 2, the air inside the bottle can be squeezed out. A through hole 7 is provided in the connecting cap 4 to connect the sampling tube 1 and the sampling bottle 2. A plug 11 is provided in the connecting cap 4 to block the through hole 7. When the connecting cap 4 is screwed into the threaded cylinder 5, the plug 11 can move and open the through hole 7. After the connecting cap 4 is screwed out from the threaded cylinder 5, the through hole 7 can be blocked by the plug 11, so that the sampling bottle 2 is in a sealed state.
[0023] Specifically, an installation cylinder 8 is provided below the through hole 7 inside the connecting cover 4. A limiting cylinder 9 is fixedly installed inside the installation cylinder 8 via a connecting rod. A limiting rod 10 that can slide up and down is provided inside the limiting cylinder 9. A plug 11 is fixedly connected to the upper end of the limiting rod 10. A spring 12 is provided on the outside of the limiting cylinder 9. The two ends of the spring 12 abut against the upper part of the connecting rod and the lower part of the plug 11, respectively. The spring 12 can push the plug 11 upward, so that the plug 11 blocks the through hole 7. A push rod 13 is fixedly installed inside the threaded cylinder 5. The push rod 13 can pass through the through hole 7 and abut against the plug 11. When the connecting cover 4 rotates inside the threaded cylinder 5, the entire connecting cover 4 can move upward. The push rod 13 pushes the plug 11 in the through hole 7 downward. At the same time, the spring 12 is compressed, realizing the connection between the sampling tube 1 and the sampling bottle 2.
[0024] Furthermore, the through hole 7 is conical, and the plug 11 is provided with a conical block that matches the through hole 7. The sealing effect can be improved by providing a sealing gasket on the plug 11.
[0025] Furthermore, an extension tube 14 is fixedly installed on the connecting cover 4. The extension tube 14 can be inserted into the sampling tube 1. A sealing ring is provided on the outer wall of the extension tube 14. By setting the extension tube 14, a sealed connection can be achieved before the connecting cover 4 is fully screwed into or out of the threaded tube 5, preventing the sampling bottle 2 from being directly connected to the outside air during disassembly and ensuring the sealing of the sampling bottle 2.
[0026] Furthermore, the bottom of the sampling bottle 2 is open, and a handle 15 is provided inside the piston 6, which makes it easy for the user to put their hand into the sampling bottle 2. The position of the piston 6 can be changed by pulling the handle 15.
[0027] Furthermore, the bottom of the sampling bottle 2 is threaded with an annular cap 16, which prevents the piston 6 from being removed from the sampling bottle 2. The piston 6 can be removed from the sampling bottle 2 by unscrewing the annular cap 16.
[0028] Furthermore, a valve 17 is installed on the sampling tube 1.
[0029] Furthermore, a pair of wrenches 18 are fixedly provided on both sides of the connecting cover 4 to facilitate the rotation of the connecting cover 4.
[0030] Furthermore, the sampling bottle 2 is made of transparent material, and the body of the sampling bottle 2 is provided with scale lines 19 for easy observation of the sampling amount.
[0031] The working principle and usage of this utility model are as follows: The sampling tube 1 is connected to the inside of the distillation apparatus. In use, firstly, the piston 6 is pushed by the handle 15 to vent the gas from the sampling bottle 2. Then, the connecting cap 4 is screwed onto the bottle mouth 3 using the wrench 18. Next, the connecting cap 4 is screwed into the threaded cylinder 5 using the wrench 18. When the connecting cap 4 is fully screwed into the threaded cylinder 5, the push rod 13 abuts against the plug 11, at which point the through hole 7 is opened, allowing the sampling tube 1 to communicate with the inside of the sampling bottle 2. Opening the valve 17 allows the liquid in the sampling tube 1 to flow into the sampling bottle 2. When the pressure inside the sampling tube 1 is too low, it can be further reduced by... The operator pulls handle 15 to move piston 6, drawing phenylethylamine from sampling tube 1 into sampling bottle 2 via suction. The sample volume can be easily observed through the scale line 19. After sampling, valve 17 is closed, and wrench 18 is used to unscrew connecting cap 4 from threaded cylinder 5. After connecting cap 4 is completely removed from threaded cylinder 5, spring 12 pushes plug 11 to close through hole 7, thus sealing sampling bottle 2. Finally, wrench 18 is used to unscrew connecting cap 4 from bottle mouth 3 to remove phenylethylamine from sampling bottle 2. After unscrewing ring cap 16, piston 6 can be removed for easy cleaning of sampling bottle 2.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sealed sampling device for a phenethylamine rectification column, comprising a sampling tube (1), a sampling bottle (2), characterized in that, The sampling bottle (2) is provided with a bottle mouth (3), and a connecting cap (4) is threadedly connected to the bottle mouth (3). A threaded cylinder (5) is fixedly provided on the sampling tube (1). The connecting cap (4) can be threadedly connected to the threaded cylinder (5). A piston (6) is slidably provided inside the sampling bottle (2). A through hole (7) is provided inside the connecting cap (4) to connect the sampling tube (1) and the sampling bottle (2). A plug (11) is provided inside the connecting cap (4) to block the through hole (7). When the connecting cap (4) is screwed into the threaded cylinder (5), the plug (11) can move and open the through hole (7).
2. A sealed sampling device for a phenyl-ethyl-amine rectification column according to claim 1, characterized in that, An installation cylinder (8) is provided inside the connecting cover (4) below the through hole (7). A limiting cylinder (9) is fixedly installed inside the installation cylinder (8) by a connecting rod. A limiting rod (10) that can slide up and down is provided inside the limiting cylinder (9). A plug (11) is fixedly connected to the upper end of the limiting rod (10). A spring (12) is provided on the outside of the limiting cylinder (9). The two ends of the spring (12) abut against the upper part of the connecting rod and the lower part of the plug (11) respectively. A push rod (13) is fixedly installed inside the threaded cylinder (5). The push rod (13) can pass through the through hole (7) and abut against the plug (11).
3. A sealed sampling device for a phenyl-ethyl-amine rectification column according to claim 2, characterized in that, The through hole (7) is conical, and the plug (11) is provided with a conical block that matches the through hole (7).
4. A sealed sampling device for a phenyl-ethyl-amine rectification column according to claim 1, characterized in that, An extension tube (14) is fixedly installed on the connecting cover (4). The extension tube (14) can be inserted into the sampling tube (1). A sealing ring is provided on the outer wall of the extension tube (14).
5. A sealed sampling device for a phenyl-ethyl-amine rectification column according to claim 1, characterized in that, The bottom of the sampling bottle (2) is open, and a handle (15) is provided inside the piston (6).
6. A sealed sampling device for a phenyl-ethyl-amine rectification column according to claim 5, characterized in that, The bottom of the sampling bottle (2) is screwed with an annular cap (16).
7. A sealed sampling device for a phenyl-ethyl-amine rectification column according to claim 1, characterized in that, A valve (17) is installed on the sampling tube (1).
8. A sealed sampling device for a phenyl-ethyl-amine rectification column according to claim 1, characterized in that, A pair of wrenches (18) are fixedly installed on both sides of the connecting cover (4).
9. A sealed sampling device for a phenylethylamine distillation column according to claim 1, characterized in that, The sampling bottle (2) is made of transparent material and has scale lines (19) on its body.