Low-temperature reaction kettle

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a low-temperature reaction kettle which comprises a kettle body, a shell, a first heat preservation cover, a second heat preservation cover and a dismounting device, the shell is installed on the outer wall of the kettle body, a controller is installed on the side wall of one end of the shell, and a solid feeding pipe is installed at the front end of the top wall of the kettle body. A condenser is installed at one end of the kettle body through a backflow elbow, a constant-pressure funnel is installed at the rear end of the top wall of the kettle body, when entering the positioning groove, the positioning block firstly makes contact with the wedge-shaped block, the positioning block extrudes the wedge-shaped block and compresses the spring, and when all the positioning block enters the positioning groove and the wedge-shaped block is aligned with the wedge-shaped groove, the constant-pressure funnel is installed at the rear end of the top wall of the kettle body. The liquid nitrogen can enter the wedge-shaped groove under the action of the spring, the positioning block is locked, the first heat preservation cover and the second heat preservation cover can be locked, the liquid nitrogen is guided into the shell through the liquid inlet pipe, the liquid nitrogen is prevented from directly impacting the outer wall of the kettle body, physical damage to the kettle body is reduced, and the service life of the kettle body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically a low-temperature reaction vessel. Background Technology

[0002] As is well known, cryogenic reactors are a key piece of equipment in the fields of chemical industry, pharmaceuticals, and materials science, used to carry out various chemical reactions under low temperature conditions. The low temperature environment is crucial for many reactions, as it can improve the selectivity, yield, and product quality of the reaction. However, traditional cryogenic reactors have some shortcomings in design and operation, which limit their performance and application range.

[0003] Traditional cryogenic reactors typically spray the cooling medium (such as liquid nitrogen) directly onto the outer wall or interior of the reactor. This approach has the following problems: the temperature of liquid nitrogen is extremely low (about -196°C), and direct impact on the outer wall of the reactor may cause thermal stress in the material due to the sudden temperature change, which may lead to material deformation, cracks or other structural problems, shortening the service life of the reactor. In addition, the insulation cover of traditional cryogenic reactors usually uses simple bolt connections, which are not convenient to disassemble and make maintenance difficult. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a low-temperature reaction vessel.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature reaction vessel, comprising a vessel body, an outer shell, a first insulation cover, a second insulation cover, and a disassembly / assembly device. The outer shell is installed on the outer wall of the vessel body. A controller is installed on one side wall of the outer shell. A solid feed pipe is installed at the front end of the top wall of the vessel body. A condenser is installed at one end of the vessel body via a reflux elbow. A constant pressure funnel is installed at the rear end of the top wall of the vessel body. A motor is installed on the top wall of the vessel body via a support frame. The output end of the motor penetrates the top wall of the vessel body and extends into its inner cavity, where a stirring rod is installed. A speed regulator is installed on the top wall of the support frame. A discharge valve is installed at the bottom end of the vessel body through the bottom wall of the outer shell. The first insulation cover and the second insulation cover are installed between the vessel body and the outer shell. A liquid inlet is installed on the top wall of the first insulation cover via a liquid inlet pipe. The first insulation cover and the second insulation cover are connected by the disassembly / assembly device. The assembly and disassembly device includes a fixed block, a positioning block, a locking box, a positioning groove, a moving groove, a wedge block, a wedge groove, a spring, a rectangular groove, and a lever. The fixed block is fixedly installed on the top wall of the first insulation cover. The positioning block is installed on the side wall of the fixed block near the second insulation cover. The locking box is installed on the top wall of the second insulation cover. The positioning groove is opened at the end of the locking box near the first insulation cover. The moving groove is opened on the top wall of the positioning groove. The wedge block is slidably installed in the moving groove. The spring supporting the wedge block is installed on the top wall of the moving groove. The wedge groove is opened at the top of the positioning block. The wedge groove and the wedge block are adapted to each other. The rectangular groove passing through the moving groove is opened at the end of the locking box away from the positioning groove. The lever is fixedly installed on the side wall of the wedge block. The lever and the rectangular groove are slidably connected.

[0008] In order to guide the movement of the wedge block, the present invention is improved by fixing guide blocks at both the front and rear ends of the wedge block, and opening guide grooves at both the front and rear ends of the moving groove, wherein the guide grooves and the guide blocks are adapted to each other.

[0009] In order to guide the movement of the guide block, the present invention is improved by fixing a guide rod in the guide groove, and the guide rod and the guide block are slidably connected.

[0010] Preferably, the present invention is improved in that both the guide groove and the guide block are cylindrical in design.

[0011] Preferably, in this invention, the corresponding ends of the first and second heat-insulating covers are locked together by the disassembly and assembly device.

[0012] Preferably, in this invention, a lever plate is installed on the outer wall of the lever block.

[0013] Preferably, an improvement of this utility model is that the outer wall of the lever is equipped with an anti-slip strip.

[0014] Preferably, the present invention is improved in that both the first heat-insulating cover and the second heat-insulating cover are semi-circular ring designs.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the present invention provides a low-temperature reaction vessel with the following advantages:

[0017] This cryogenic reactor uses an inlet pipe and an inlet hopper to guide liquid nitrogen into the inlet pipe, which then flows into the outer shell. This prevents the liquid nitrogen from directly impacting the outer wall of the reactor, reducing physical damage and extending its service life. The design of the inlet pipe allows for better control of the flow rate and pressure of the liquid nitrogen, avoiding internal pressure fluctuations caused by direct impact of liquid nitrogen on the outer wall of the reactor. This ensures the cryogenic reaction within the reactor and guarantees its safe operation.

[0018] This cryogenic reactor, with its specially designed disassembly and assembly device, only requires inserting a positioning block into the positioning groove. The wedge block and the wedge groove lock together, ensuring a tight connection between the first and second insulation covers. This reduces cold loss and improves the overall insulation effect. This design effectively prevents cooling media such as liquid nitrogen from leaking from the connection point, ensuring that the reactor maintains the required low-temperature environment and avoiding the impact of temperature fluctuations on the reaction process. When disassembly is required, the operator only needs to pull the lever to unlock it, greatly shortening the operation time and improving work efficiency. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention from a first angle;

[0020] Figure 2 This is a two-dimensional structural diagram of the present invention from a second angle;

[0021] Figure 3 This is a three-dimensional structural diagram of the first and second heat-insulating covers of this utility model;

[0022] Figure 4 In this utility model Figure 3 A magnified structural diagram of part A;

[0023] Figure 5 This is a half-section three-dimensional structural diagram of the second heat-insulating cover and locking box of this utility model;

[0024] Figure 6 In this utility model Figure 5 A magnified structural diagram of part B.

[0025] In the diagram: 1. Kettle body; 2. Outer shell; 3. First insulation cover; 4. Second insulation cover; 5. Controller; 6. Solid feed pipe; 7. Return elbow; 8. Condenser; 9. Constant pressure funnel; 10. Support frame; 11. Motor; 12. Stirring rod; 13. Speed ​​controller; 14. Discharge valve; 15. Liquid inlet pipe; 16. Liquid inlet hopper; 17. Fixing block; 18. Positioning block; 19. Locking box; 20. Positioning groove; 21. Moving groove; 22. Wedge block; 23. Wedge groove; 24. Spring; 25. Rectangular groove; 26. Pulley; 27. Guide block; 28. Guide groove; 29. ​​Guide rod; 30. Pulley plate; 31. Anti-slip strip. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-6A low-temperature reaction vessel includes a vessel body 1, an outer shell 2, a first insulation cover 3, a second insulation cover 4, and a disassembly / assembly device. The outer shell 2 is installed on the outer wall of the vessel body 1. A controller 5 is installed on one side wall of the outer shell 2. A solid feed pipe 6 is installed at the front end of the top wall of the vessel body 1. A condenser 8 is installed at one end of the vessel body 1 via a reflux elbow 7. A constant pressure funnel 9 is installed at the rear end of the top wall of the vessel body 1. A motor 11 is installed on the top wall of the vessel body 1 via a support frame 10. A stirring rod 12 is installed at the output end of the motor 1, which penetrates the top wall of the vessel body 1 and extends into its inner cavity. A speed regulator 13 is installed on the top wall of the support frame 10. A discharge valve 14 is installed at the bottom end of the vessel body 1, which penetrates the bottom wall of the outer shell 2. A connection is made between the vessel body 1 and the outer shell 2. The device is equipped with a first heat-insulating cover 3 and a second heat-insulating cover 4. A liquid inlet hopper 16 is installed on the top wall of the first heat-insulating cover 3 via a liquid inlet pipe 15. The first heat-insulating cover 3 and the second heat-insulating cover 4 are connected by a disassembly and assembly device. The disassembly and assembly device includes a fixing block 17, a positioning block 18, a locking box 19, a positioning groove 20, a moving groove 21, a wedge block 22, a wedge groove 23, a spring 24, a rectangular groove 25, and a lever 26. The fixing block 17 is fixedly installed on the top wall of the first heat-insulating cover 3. The positioning block 18 is installed on the side wall of the fixing block 17 near the second heat-insulating cover 4. The locking box 19 is installed on the top wall of the second heat-insulating cover 4, and the positioning groove 20 is formed on the end of the locking box 19 near the first heat-insulating cover 3. 0. The top wall of the positioning groove 20 is provided with the moving groove 21. The wedge block 22 is slidably installed in the moving groove 21. The top wall of the moving groove 21 is provided with the spring 24 supporting the wedge block 22. The top of the positioning block 18 is provided with the wedge groove 23, which is adapted to the wedge block 22. The locking box 19 is provided with a rectangular groove 25 that passes through the moving groove 21 at one end away from the positioning groove 20. The push block 26 is fixedly installed on the side wall of the wedge block 22. The push block 26 and the rectangular groove 25 are slidably connected. In this embodiment, during use, the first heat preservation cover 3 and the second heat preservation cover 4 are installed between the vessel body 1 and the outer shell 2 to heat preservation the vessel body 1. The disassembly and assembly are performed using the disassembly and assembly device. The connection is locked by aligning one end of the first and second insulation shells together, aligning the positioning block 18 with the positioning groove 20 and inserting it. When the positioning block 18 enters the positioning groove 20, it first contacts the wedge block 22. Due to the special shape of the wedge block 22, the positioning block 18 presses against the wedge block 22 and compresses the spring 24, causing the wedge block 22 to retract into the moving groove 21. When the positioning block 18 is fully inserted into the positioning groove 20 and the wedge block 22 and the wedge groove 23 are aligned, the wedge block 22 loses external force and enters the wedge groove 23 under the action of the spring 24, thus locking the positioning block 18. This completes the locking of the first insulation cover 3 and the second insulation cover 4. Liquid nitrogen is then guided into the outer shell 2 through the liquid inlet pipe 15, preventing the liquid nitrogen from directly impacting the outer wall of the vessel body 1.This reduces physical damage to the reactor body 1 and extends its service life. Liquid nitrogen is introduced into the outer shell 2 through the inlet pipe 15, allowing for better control of the flow and pressure of the liquid nitrogen. This avoids internal pressure fluctuations caused by direct impact of liquid nitrogen on the outer wall of the reactor body 1, achieving low-temperature reaction in the reactor body 1 and ensuring the safe operation of the reactor. The motor 11 is started, and the speed of the stirring rod 12 and the stirring bar on the outer wall of the stirring rod 12 are adjusted via the speed controller 13 to ensure thorough mixing of the materials inside the reactor body 1. The condenser 8 is connected to the reactor body 1 via the return elbow 7 to condense any potentially volatile reaction products and return them to the reactor. The fluid flows into the vessel body 1 to continue participating in the reaction. The controller 5 can be used to monitor and control the temperature, pressure, and other parameters inside the vessel body 1 to ensure that the reaction conditions meet experimental or production requirements. If it is necessary to disassemble the first insulation cover 3 and the second insulation cover 4, a disassembly and assembly device can be used to quickly separate the first insulation cover 3 and the second insulation cover 4. Specifically, pull the lever 26 to make the wedge block 22 disengage from the wedge groove 23 on the positioning block 18, thereby unlocking the connection between the first insulation cover 3 and the second insulation cover 4. Afterward, the first insulation cover 3 and the second insulation cover 4 can be easily removed for maintenance or replacement.

[0028] In actual use, the movement of the wedge block 22 is further guided. In this embodiment, guide blocks 27 are fixedly installed at both the front and rear ends of the wedge block 22, and guide grooves 28 are opened at both the front and rear ends of the moving groove 21. The guide grooves 28 and the guide blocks 27 are adapted to each other. When the wedge block 22 moves, it drives the guide blocks 27 to slide in the guide grooves 28. The cooperation between the guide blocks 27 and the guide grooves 28 ensures that the wedge block 22 can move accurately along the predetermined path during the movement, avoiding the possible deflection or jamming of the wedge block 22 when sliding. This helps to ensure that the connection between the first heat insulation cover 3 and the second heat insulation cover 4 is tighter and more stable.

[0029] In actual use, the movement of the guide block 27 is further guided. In this embodiment, a guide rod 29 is fixedly installed in the guide groove 28. The guide rod 29 and the guide block 27 are slidably connected. The presence of the guide rod 29 provides a clearer movement path for the guide block 27, ensuring that it always maintains a straight line during movement and avoiding any possible lateral offset or rotation. This helps the wedge block 22 to insert and exit the positioning groove 20 more accurately, thereby achieving a reliable connection between the first heat preservation cover 3 and the second heat preservation cover 4.

[0030] In this embodiment, both the guide groove 28 and the guide block 27 are cylindrical. The cylindrical design makes the contact surface between the guide block 27 and the guide groove 28 annularly distributed. This uniform contact can disperse pressure and avoid local high pressure points, thereby effectively reducing friction.

[0031] In this embodiment, the corresponding ends of the first insulation cover 3 and the second insulation cover 4 are locked together by the disassembly and assembly device. By setting the disassembly and assembly device at both ends, the connection between the first insulation cover 3 and the second insulation cover 4 is made tighter, reducing cold loss and improving the overall insulation effect.

[0032] In this embodiment, a lever plate 30 is installed on the outer wall of the lever 26. The lever plate 30 increases the contact area of ​​the lever 26, making it easier for the operator to apply force, especially when a large force is required to unlock or lock the heat preservation cover, reducing hand fatigue. The larger lever plate 30 can be designed with eye-catching colors or markings to provide visual cues, help the operator to quickly identify and operate, and reduce the risk of misoperation.

[0033] In this embodiment, the outer wall of the lever 30 is equipped with an anti-slip strip 31. The anti-slip strip 31 increases the friction of the lever 30 surface, ensuring that the operator's hand will not easily slip when applying force, especially in wet, oily, or gloved conditions, providing better grip stability.

[0034] In this embodiment, both the first heat-insulating cover 3 and the second heat-insulating cover 4 are semi-circular ring designs. The semi-circular ring design allows the heat-insulating cover to better fit the circular outline of the vessel body 1, reducing unnecessary space occupation. This design can effectively prevent the cooling medium (such as liquid nitrogen) from leaking from the connection point, ensuring that the reactor interior maintains the required low-temperature environment and avoiding the reaction process being affected by temperature fluctuations.

[0035] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0036] 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 low-temperature reaction vessel, comprising a vessel body (1), an outer shell (2), a first heat-insulating cover (3), a second heat-insulating cover (4), and a disassembly / assembly device, characterized in that: The outer wall of the vessel body (1) is fitted with the outer shell (2). A controller (5) is installed on one side wall of the outer shell (2). A solid feed pipe (6) is installed at the front end of the top wall of the vessel body (1). A condenser (8) is installed at one end of the vessel body (1) through a return elbow (7). A constant pressure funnel (9) is installed at the rear end of the top wall of the vessel body (1). A motor (11) is installed on the top wall of the vessel body (1) through a support frame (10). The output end of the motor (11) penetrates the top wall of the vessel body (1) and extends into its inner cavity, where a stirring rod (12) is installed. The top wall of the support frame (10) A speed regulator (13) is installed. A discharge valve (14) is installed at the bottom end of the vessel body (1) through the bottom wall of the outer shell (2). The first heat-insulating cover (3) and the second heat-insulating cover (4) are installed between the vessel body (1) and the outer shell (2). A liquid inlet hopper (16) is installed on the top wall of the first heat-insulating cover (3) through a liquid inlet pipe (15). The first heat-insulating cover (3) and the second heat-insulating cover (4) are connected by the disassembly and assembly device, which includes a fixing block (17), a positioning block (18), a locking box (19), a positioning groove (20), and a moving groove (21). The components include a wedge block (22), a wedge groove (23), a spring (24), a rectangular groove (25), and a lever (26). A fixing block (17) is fixedly installed on the top wall of the first insulation cover (3). A positioning block (18) is installed on the side wall of the fixing block (17) near the second insulation cover (4). A locking box (19) is installed on the top wall of the second insulation cover (4). A positioning groove (20) is opened at one end of the locking box (19) near the first insulation cover (3). A moving groove (21) is opened on the top wall of the positioning groove (20). 21) The wedge block (22) is slidably installed inside. The spring (24) supporting the wedge block (22) is installed on the top wall of the moving groove (21). The wedge groove (23) is opened at the top of the positioning block (18). The wedge groove (23) and the wedge block (22) are adapted to each other. The rectangular groove (25) that passes through the moving groove (21) is opened at the end of the locking box (19) away from the positioning groove (20). The push block (26) is fixedly installed on the side wall of the wedge block (22). The push block (26) and the rectangular groove (25) are slidably connected.

2. The low temperature reaction vessel of claim 1, wherein: Guide blocks (27) are fixedly installed at both ends of the wedge block (22), and guide grooves (28) are opened at both ends of the moving groove (21). The guide grooves (28) and the guide blocks (27) are adapted to each other.

3. The cryogenic reactor of claim 2, wherein: A guide rod (29) is fixedly installed in the guide groove (28), and the guide rod (29) and the guide block (27) are slidably connected.

4. The cryogenic reactor of claim 3, wherein: Both the guide groove (28) and the guide block (27) are cylindrical.

5. The cryogenic reactor of claim 4, wherein: The corresponding ends of the first heat insulation cover (3) and the second heat insulation cover (4) are locked together by the disassembly and assembly device.

6. The cryogenic reaction vessel of claim 5, wherein: The outer wall of the lever (26) is fitted with a lever plate (30).

7. The cryogenic reaction vessel of claim 6, wherein: The outer wall of the lever (30) is fitted with anti-slip strips (31).

8. The cryogenic reactor of claim 7, wherein: Both the first heat insulation cover (3) and the second heat insulation cover (4) are semi-circular ring designs.

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