A digestion device for determining polyisoprene content
By designing a digestion apparatus comprising a steam generating flask, a Claisen inlet pipe, a distillation trap, and a receiving flask, the problem of the inability to directly separate polyisoprene was solved, achieving efficient and safe polyisoprene yield and experimental accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUSHUN YIKESI NEW MATERIAL
- Filing Date
- 2025-04-15
- Publication Date
- 2026-06-30
AI Technical Summary
Existing conventional distillation equipment cannot directly process polyisoprene and requires additional digestion equipment. Furthermore, polyisoprene has low volatility and cannot be directly separated by conventional distillation. The equipment has limited functionality, and the use of strong acids or alkalis may pose hazards to operators and the environment.
A digestion apparatus was designed, comprising a steam generating flask, a Claysen inlet pipe, a distillation trap, a condenser, and a receiving flask. The steam generating flask provides stable steam, the heating base provides a uniform heat source, the Claysen inlet pipe enables multifunctional connections, the digestion flask provides a sealed high-temperature and high-pressure environment, the distillation trap captures volatile substances, the condenser cools and collects the liquid, and the receiving flask ensures the recovery of the target components. The entire system is a closed system protected by nitrogen.
This improved the yield of polyisoprene, enhanced the safety and accuracy of the experiment, prevented the leakage of harmful gases and environmental pollution, and ensured the uniformity and safety of the reaction.
Smart Images
Figure CN224435928U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polyisoprene content digestion technology, specifically a digestion device for determining polyisoprene content. Background Technology
[0002] When determining the polyisoprene content in rubber, existing conventional distillation equipment cannot directly process rubber samples and requires additional digestion equipment. Furthermore, polyisoprene is a high molecular weight polymer with extremely low volatility, which cannot be directly separated by conventional distillation. It needs to be broken down into smaller molecules, requiring additional pyrolysis steps. Moreover, the separation effect of interfering substances is poor, the equipment has limited functionality and lacks integration. In addition, when using conventional distillation equipment, it may be necessary to use strong acids, strong alkalis or other corrosive reagents for sample digestion, which poses potential hazards to operators and the environment.
[0003] To address the aforementioned issues, a digestion apparatus for determining the content of polyisoprene is proposed here. Utility Model Content
[0004] The purpose of this invention is to provide a digestion device for determining the content of polyisoprene, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a digestion apparatus for determining the content of polyisoprene, comprising a steam generating flask, a conduit connected to the top of the steam generating flask, a Claisen fitting connected to the end of the conduit away from the steam generating flask, a digestion flask connected to the bottom of the Claisen fitting, a distillation trap connected to one side of the top of the Claisen fitting, a first fitting connected to the top of the distillation trap, a condenser connected to the end of the first fitting away from the distillation trap, a receiving flask connected to the bottom of the condenser, a nitrogen protection connection pipe connected to one side of the receiving flask, a heating base provided at the bottom of the surface of the steam generating flask, a plurality of electric heating tubes fixedly installed on the inner side of the heating base, a fixing frame engaged at the connection between the heating base and the steam generating flask, a plurality of support columns fixedly installed at the bottom of the fixing frame, the bottom ends of the plurality of support columns being fixedly connected to the heating base, and a temperature sensor fixedly installed in the middle of the bottom of the inner wall of the heating base.
[0006] This digestion apparatus provides the reaction site through a steam-generating flask, producing stable steam. A heating base then provides a uniform heat source to accelerate sample digestion and prevent localized overheating. The steam is then guided through a conduit into a Claisen inlet tube. This inlet tube enables multi-functional connections, preventing sample loss, improving reaction efficiency, and providing safety protection against harmful gas leakage. It also enhances reaction control precision and ensures optimal experimental conditions. The digestion flask provides a sealed, high-temperature, and high-pressure reaction environment, promoting the complete decomposition of organic matter in the sample and ensuring reaction homogeneity and safety. Volatile gases are then captured by a distillation trap. This system prevents evaporation loss and collects condensate to prevent liquid backflow, improving distillation efficiency, reducing interference, and providing safety protection to prevent leakage of harmful substances. The vapor is then introduced into the condenser via a first connecting pipe to cool it and convert it into liquid. The condensate is then collected in a receiving flask, ensuring complete recovery of the target component, preventing evaporation loss, reducing sample loss, and providing nitrogen protection via a nitrogen protection connection to prevent backflow and provide buffering. The entire apparatus is a closed system to prevent leakage of harmful gases, reduce environmental pollution, enhance experimental accuracy, and effectively improve the yield of polyisoprene.
[0007] Preferably, a first sealing plug is fixedly provided at the connection between the steam generating flask and the conduit, and a branch pipe is provided in the middle of the first sealing plug. The sealing performance at the connection between the steam generating flask and the conduit can be improved by providing the first sealing plug.
[0008] Preferably, a fifth sealing plug is fixedly provided at the connection between the Claysen connector and the conduit, and a sixth sealing plug is fixedly provided at the connection between the Claysen connector and the distillation trap. The cooperation of the fifth and sixth sealing plugs can improve the sealing performance of the overall device.
[0009] Preferably, a fourth sealing plug is fixedly provided at the connection between the distillation trap and the first connecting pipe, and a third sealing plug is fixedly provided at the connection between the condenser tube and the receiving flask. The combination of the third and fourth sealing plugs can improve the sealing performance of the overall device.
[0010] Preferably, a second sealing plug is fixedly provided at the connection between the receiving flask and the condenser tube, which can improve the sealing performance at the connection between the receiving flask and the condenser tube.
[0011] Preferably, a thermometer is fixedly installed on one side of the top of the digestion flask, which allows for monitoring of the temperature inside the digestion flask.
[0012] Preferably, the fixing frame includes a first fixing ring and a second fixing ring, and a plurality of connecting rods are fixedly arranged between the first fixing ring and the second fixing ring. The fixing frame facilitates the stable placement of the steam generating flask.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] This digestion apparatus provides the reaction site through a steam-generating flask, producing stable steam. A heating base then provides a uniform heat source to accelerate sample digestion and prevent localized overheating. The steam is then guided through a conduit into a Claisen inlet tube. This inlet tube enables multi-functional connections, preventing sample loss, improving reaction efficiency, and providing safety protection against harmful gas leakage. It also enhances reaction control precision and ensures optimal experimental conditions. The digestion flask provides a sealed, high-temperature, and high-pressure reaction environment, promoting the complete decomposition of organic matter in the sample and ensuring reaction homogeneity and safety. Volatile gases are then captured by a distillation trap. This system prevents evaporation loss and collects condensate to prevent liquid backflow, improving distillation efficiency, reducing interference, and providing safety protection to prevent leakage of harmful substances. The vapor is then introduced into the condenser via a first connecting pipe to cool it and convert it into liquid. The condensate is then collected in a receiving flask, ensuring complete recovery of the target component, preventing evaporation loss, reducing sample loss, and providing nitrogen protection via a nitrogen protection connection to prevent backflow and provide buffering. The entire apparatus is a closed system to prevent leakage of harmful gases, reduce environmental pollution, enhance experimental accuracy, and effectively improve the yield of polyisoprene. Attached Figure Description
[0015] Figure 1 This is a structural diagram of the present invention;
[0016] Figure 2 This is an enlarged view of the first partial structure of this utility model;
[0017] Figure 3 This is an enlarged view of the first partial structure of this utility model;
[0018] Figure 4 This is an enlarged view of part A of this utility model.
[0019] In the diagram: 1. Steam generating flask; 2. Thermometer; 3. Digestion flask; 4. Claysen connecting pipe; 5. Distillation trap; 6. First connecting pipe; 7. Condenser; 8. Receiving flask; 9. Nitrogen protection connecting pipe; 10. First sealing plug; 11. Branch pipe; 12. Conduit; 13. Temperature sensor; 14. Second sealing plug; 15. Third sealing plug; 16. Fourth sealing plug; 17. Fifth sealing plug; 18. Sixth sealing plug; 19. Heating base; 20. Support column; 21. Fixing frame; 211. First fixing ring; 212. Second fixing ring; 213. Connecting rod; 22. Heating element. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-4 This invention provides a digestion apparatus for determining the content of polyisoprene, comprising a steam generating flask 1, a conduit 12 connected to the top of the steam generating flask 1, a Claisen fitting 4 connected to the end of the conduit 12 away from the steam generating flask 1, a digestion flask 3 connected to the bottom of the Claisen fitting 4, a distillation trap 5 connected to one side of the top of the Claisen fitting 4, a first fitting 6 connected to the top of the distillation trap 5, a condenser 7 connected to the end of the first fitting 6 away from the distillation trap 5, a receiving flask 8 connected to the bottom of the condenser 7, and a nitrogen supply connected to one side of the receiving flask 8. A gas protection connecting pipe 9 is provided. A heating base 19 is provided at the bottom of the surface of the steam generating flask 1. Several electric heating tubes 22 are fixedly installed on the inner side of the heating base 19. A fixing frame 21 is engaged at the connection between the heating base 19 and the steam generating flask 1. Several support columns 20 are fixedly installed at the bottom end of the fixing frame 21. The bottom ends of the support columns 20 are all fixedly connected to the heating base 19. A temperature sensor 13 is fixedly installed in the middle of the bottom end of the inner wall of the heating base 19. This digestion device provides a reaction site through the steam generating flask 1, generates stable steam, and provides homogenization through the heating base 19. A uniform heat source accelerates sample digestion and avoids localized overheating. Steam is then introduced into the Claysen inlet tube 4 via tube 12. The Claysen inlet tube 4 provides a multi-functional connection, preventing sample loss, improving reaction efficiency, and providing safety protection against harmful gas leakage. It also enhances reaction control precision and ensures optimal experimental conditions. The digestion flask 3 provides a sealed, high-temperature, and high-pressure resistant reaction environment, promoting the complete decomposition of organic matter in the sample and ensuring reaction uniformity and safety. Volatile substances are captured by the distillation trap 5 to prevent volatilization loss, and condensate is collected to prevent liquid backflow, improving distillation efficiency, reducing interference, and providing safety protection against harmful substance leakage. Steam is then introduced into the condenser tube 7 via the first inlet tube 6 to cool the steam and convert it into liquid. The condensate is collected by the receiving flask 8, ensuring complete recovery of the target component, preventing volatilization loss, and reducing sample loss. Nitrogen protection is provided by the nitrogen protection connection tube 9 to prevent backflow and provide buffering. The entire apparatus uses a closed system to prevent harmful gas leakage, reduce environmental pollution, enhance experimental accuracy, and effectively improve the yield of polyisoprene.
[0022] A first sealing plug 10 is fixedly installed at the connection between the steam generating flask 1 and the conduit 12. A branch pipe 11 is provided in the middle of the first sealing plug 10. A fifth sealing plug 17 is fixedly installed at the connection between the Claysen connecting pipe 4 and the conduit 12. A sixth sealing plug 18 is fixedly installed at the connection between the Claysen connecting pipe 4 and the distillation trap 5. A fourth sealing plug 16 is fixedly installed at the connection between the distillation trap 5 and the first connecting pipe 6. A third sealing plug 15 is fixedly installed at the connection between the condenser 7 and the receiving flask 8.
[0023] In use, the sealing performance at the connection between the steam generating flask 1 and the conduit 12 can be improved by setting the first sealing plug 10, the sealing performance of the whole device can be improved by the cooperation of the fifth sealing plug 17 and the sixth sealing plug 18, and the sealing performance of the whole device can be improved by the cooperation of the third sealing plug 15 and the fourth sealing plug 16.
[0024] A second sealing plug 14 is fixedly installed at the connection between the receiving flask 8 and the condenser tube 7. A thermometer 2 is fixedly installed on one side of the top of the digestion flask 3. The fixing frame 21 includes a first fixing ring 211 and a second fixing ring 212. Several connecting rods 213 are fixedly installed between the first fixing ring 211 and the second fixing ring 212.
[0025] In use, the second sealing plug 14 can improve the sealing performance at the connection between the receiving flask 8 and the condenser tube 7, the thermometer 2 can monitor the temperature inside the digestion flask 3, and the fixing bracket 21 can facilitate the stable placement of the steam generating flask 1.
[0026] In this embodiment, the digestion apparatus provides a reaction site via a steam generating flask 1, producing stable steam. This steam is then fed through a heating seat 19 to provide a uniform heat source, accelerating sample digestion and preventing localized overheating. The steam is then introduced into the Claisen inlet tube 4 via a conduit 12. The Claisen inlet tube 4 provides a multi-functional connection, preventing sample loss, improving reaction efficiency, and providing safety protection against harmful gas leakage. It also enhances reaction control precision and ensures optimal experimental conditions. The digestion flask 3 provides a sealed, high-temperature, and high-pressure resistant reaction environment, promoting the complete decomposition of organic matter in the sample and ensuring reaction uniformity and safety. The steam is then further distributed through the steam generator. Distillation trap 5 captures volatile substances, preventing volatilization loss, and collects condensate to prevent liquid backflow, thereby improving distillation efficiency, reducing interference, and providing safety protection to prevent leakage of harmful substances. The vapor is then introduced into the condenser 7 through the first connecting pipe 6 to cool the vapor and convert it into liquid. The condensate is then collected through the receiving flask 8 to ensure complete recovery of the target component, prevent volatilization loss, reduce sample loss, and provide nitrogen protection through the nitrogen protection connecting pipe 9 to prevent backflow and provide a buffering effect. The entire device adopts a closed system to prevent leakage of harmful gases, reduce environmental pollution, enhance experimental accuracy, and effectively improve the yield of polyisoprene.
[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A digestion apparatus for determining the content of polyisoprene, comprising a steam generating flask (1), characterized in that: The top of the steam generating flask (1) is connected to a conduit (12), the end of the conduit (12) away from the steam generating flask (1) is connected to a Claysen fitting (4), the bottom end of the Claysen fitting (4) is connected to a digestion flask (3), one side of the top of the Claysen fitting (4) is connected to a distillation trap (5), the top of the distillation trap (5) is connected to a first fitting (6), the end of the first fitting (6) away from the distillation trap (5) is connected to a condenser (7), the bottom end of the condenser (7) is connected to a receiving flask (8), and the receiving flask (8)... A nitrogen protection connecting pipe (9) is connected to one side of the steam generating flask (1). A heating seat (19) is provided at the bottom of the surface of the steam generating flask (1). Several electric heating tubes (22) are fixedly installed on the inner side of the heating seat (19). A fixing frame (21) is engaged at the connection between the heating seat (19) and the steam generating flask (1). Several support columns (20) are fixedly installed at the bottom of the fixing frame (21). The bottom ends of the several support columns (20) are all fixedly connected to the heating seat (19). A temperature sensor (13) is fixedly installed in the middle of the bottom of the inner wall of the heating seat (19).
2. The digestion apparatus for determining the content of polyisoprene according to claim 1, characterized in that: A first sealing plug (10) is fixedly provided at the connection between the steam generating flask (1) and the conduit (12), and a branch pipe (11) is provided in the middle of the first sealing plug (10).
3. The digestion apparatus for determining the content of polyisoprene according to claim 1, characterized in that: A fifth sealing plug (17) is fixedly provided at the connection between the Claysen connector (4) and the conduit (12), and a sixth sealing plug (18) is fixedly provided at the connection between the Claysen connector (4) and the distillation trap (5).
4. The digestion apparatus for determining the content of polyisoprene according to claim 1, characterized in that: A fourth sealing plug (16) is fixedly provided at the connection between the distillation trap (5) and the first connecting pipe (6), and a third sealing plug (15) is fixedly provided at the connection between the condenser (7) and the receiving flask (8).
5. The digestion apparatus for determining the content of polyisoprene according to claim 1, characterized in that: A second sealing plug (14) is fixedly provided at the connection between the receiving flask (8) and the condenser (7).
6. The digestion apparatus for determining the content of polyisoprene according to claim 1, characterized in that: A thermometer (2) is fixedly installed on one side of the top of the digestion flask (3).
7. The digestion apparatus for determining the content of polyisoprene according to claim 1, characterized in that: The fixing frame (21) includes a first fixing ring (211) and a second fixing ring (212), and a plurality of connecting rods (213) are fixedly arranged between the first fixing ring (211) and the second fixing ring (212).