Novel automatic temperature control crystallization kettle

Abstract

The utility model discloses a novel automatic temperature control crystallization kettle, including cauldron body, water bath temperature control subassembly, stirring subassembly and stirring motor. The stirring subassembly is installed in the cauldron body, and the stirring motor is set on the top surface of cauldron body and is transmission connection with stirring subassembly. The water bath temperature control subassembly includes the water bath bucket of the sleeve setting in the outer wall of cauldron body, the heat conduction coil pipe of spiral shape winding setting and the upper and lower setting of the fixed slip ring, and the heat conduction coil pipe and stirring subassembly inside all form the heat conduction oil flow channel. The stirring subassembly includes the axle rod, the lifting paddle and the scraper paddle of setting on it, and the scraper paddle outside is equipped with the movable slip ring, and the movable slip ring is slidably arranged in the inner side of fixed slip ring, and is communicated with the heat conduction oil access, and the lifting paddle is equipped with the wing flow groove to enhance the heat conduction oil disturbance effect. The structure is through the stirring subassembly is included in the heat conduction loop, realizes the double -area cooperation temperature control in cauldron body, effectively promotes the temperature uniformity of crystallization material, heat exchange efficiency and system response speed, is applicable to the high -quality crystallization process requirement scene.

Description

Technical Field

[0001] This utility model relates to the field of crystallization kettle technology, specifically a novel automatic temperature-controlled crystallization kettle. Background Technology

[0002] A crystallization reactor is a type of process equipment commonly used in the pharmaceutical, chemical, and food industries, primarily for the crystallization reaction of materials. A traditional crystallization reactor typically consists of a reactor body, a stirring device, and a temperature control system. The temperature control system often employs a jacketed structure or an external water bath system, allowing for the heating or cooling of the reactor body, either as a whole or in specific areas, by circulating hot or cold water or heat transfer oil into the jacket or water bath.

[0003] Currently, common automatic temperature-controlled crystallizers generally employ the following technical approach: an external water bath is installed, with a heat transfer coil inside. The water bath temperature controls the temperature of the heat transfer oil, and the heat transfer coil then controls the heat exchange within the reactor. The stirring structure typically consists of a fixed shaft driving a rotating impeller to improve material flowability and achieve uniform mixing. While this structure offers some temperature control, it still suffers from the following significant shortcomings:

[0004] First, the heat conduction system only exchanges heat with the outer wall of the vessel, resulting in uneven temperature distribution between the material near the vessel wall and the central region. This easily leads to the formation of overheated or undercooled zones, affecting crystal particle size distribution and quality stability, especially when processing heat-sensitive materials. In the existing structure, the stirring component itself does not participate in the heat exchange process, only performing a mixing function. The heat exchange efficiency mainly relies on conduction within the vessel body, resulting in slow heat transfer to the material interior and a delayed response, which is not conducive to rapid temperature control or precise control of the crystallization process.

[0005] In summary, existing automatic temperature-controlled crystallizers still have significant room for improvement in terms of thermal control efficiency, material temperature uniformity, and structural sealing safety. There is an urgent need for a new type of temperature-controlled crystallizer that can simultaneously achieve efficient heat conduction, precise temperature control, and reliable structural sealing during the stirring process, in order to meet the dual requirements of industrial applications for crystallization quality and energy efficiency. Utility Model Content

[0006] This utility model aims to solve the technical problems existing in the prior art or related technologies, and is used to achieve the synergistic operation of efficient stirring and precise temperature control in the crystallization process. It is applicable to material processing scenarios with high requirements for temperature control and crystallization quality, such as pharmaceuticals, chemicals, and food.

[0007] The overall structure of this utility model includes: a vessel body, a water bath temperature control component, a stirring component, and a stirring motor fixedly installed on the top surface of the vessel body. Through a spiral heat-conducting coil located on the outer wall of the vessel body, which connects to the internal fluid channel, and combined with the water bath temperature control system and the sealed heat transfer structure of the moving and fixed slip rings, the internal stirring device and heat-conducting circuit are integrated. While ensuring good stirring performance, this significantly improves the temperature control response speed and heat exchange efficiency, thereby optimizing the temperature uniformity of the crystallization process and the product quality.

[0008] In a preferred example, the stirring motor is a geared motor structure, and its output end is connected to the stirring assembly through a coupling to drive it to achieve stable rotation; specifically, this structure can provide stable speed and sufficient torque to ensure the reliability of continuous stirring over a long period of time.

[0009] In a preferred embodiment, the stirring assembly includes a shaft, a lifting impeller, a scraper impeller, and a movable slip ring fixed to the surface of the scraper impeller. The shaft is arranged vertically and sequentially connects the lifting impeller and the scraper impeller to drive the stirring mechanism to rotate, creating a circulation effect. The movable slip ring is located outside the scraper impeller and cooperates with a fixed slip ring to achieve a sealed sliding connection of the fluid channel. Specifically, this structure enables the stirring device to not only perform stirring but also serve as a flow channel carrier for heat transfer oil, thus also possessing heat conduction functionality.

[0010] In a preferred embodiment, the water bath temperature control assembly includes a water bath, a heat-conducting coil, and fixed slip rings disposed at the upper and lower ends of the heat-conducting coil. The water bath is fixedly installed outside the vessel body and is used to contain constant-temperature water or cooling water to regulate the temperature of the heat conduction system. The heat-conducting coil is a metal spiral tube structure, wound around the outer wall of the vessel body, forming a closed heat transfer oil circuit with the fixed slip ring and the internal flow channel of the stirring assembly. Specifically, this structure can indirectly regulate the temperature of the heat transfer oil through the water bath, thereby precisely controlling the temperature distribution of the vessel body and the materials inside.

[0011] In a preferred embodiment, both the fixed slip ring and the heat-conducting coil are hollow structures, with heat-conducting oil injected into the inner cavity for fluid heat conduction. The fixed slip ring has a sliding groove on its surface, forming a sliding fit with the moving slip ring, and is coaxially arranged with the vessel body. Specifically, this structure ensures continuous circulation of the heat-conducting oil under sealed conditions, improving equipment safety and heat exchange stability.

[0012] In a preferred embodiment, the heat-conducting coil is located inside the water bath and spirally wound around the outer surface of the vessel, forming a large-area heat transfer interface. The heat-conducting coil is made of metal to ensure thermal conductivity and structural strength. Specifically, this configuration improves the heat conduction capacity per unit time and reduces the risk of thermal hysteresis.

[0013] In a preferred embodiment, the moving slip ring surface is provided with a moving sealing ring, the outer circumference of which slides in contact with the inner surface of the fixed slip ring to achieve a reliable seal during rotation. Specifically, this structure effectively prevents heat transfer oil leakage and is suitable for the heat fluid transfer requirements under high-speed rotation conditions.

[0014] In a preferred embodiment, the lifting impeller and scraper impeller have internal through-flow channels that are connected to each other via a support pipe rod, forming an internal passage for the heat transfer oil. The flow channels are further connected to the heat transfer coil via a moving slip ring and a fixed slip ring, forming a complete heat transfer loop. Specifically, this structure enables the stirring assembly to participate in the temperature control system as a heat exchanger, improving the rapid response capability of temperature control.

[0015] In a preferred example, the lifter is provided with several finned channels, uniformly arranged along the axial direction, with equal spacing between adjacent channels; these channels are connected to the heat transfer oil passage to optimize the flow path of the heat transfer oil. Specifically, this structure enhances the turbulence effect of the heat transfer oil within the stirring assembly, improving the overall heat exchange efficiency and temperature uniformity.

[0016] In summary, this utility model integrates the heat conduction system into the stirring assembly and works in conjunction with the water bath temperature control structure to achieve dual-zone temperature control of the material interior and the vessel wall area. This effectively solves the technical problems of uneven temperature distribution, delayed temperature control response, and complex sealing structure in traditional structures, and has significant advantages in ensuring crystallization quality, equipment safety, and ease of operation.

[0017] The beneficial effects achieved by this utility model are as follows:

[0018] 1. In this utility model, by introducing heat transfer oil into the spiral heat transfer coil outside the reactor body and the internal flow channel of the stirring assembly, dual-zone temperature control of the inner wall and axial area of ​​the reactor body is achieved. Combined with the temperature control function of the water bath, the overall temperature distribution of the material can be precisely controlled, significantly improving the temperature uniformity and process stability during the material crystallization process. It is particularly suitable for the treatment of heat-sensitive or crystallization-sensitive substances.

[0019] 2. In this utility model, the stirring assembly is connected to the heat transfer oil system and is equipped with a sealing heat transfer structure of moving slip ring and fixed slip ring. This not only integrates the stirring function and the heat exchange function, but also ensures the sealing and safety of the heat exchange system under high-speed rotation, enhances the dynamic heat transfer efficiency and service life of the equipment, and improves the automation level of the whole machine. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the inner structure of the vessel body and water bath according to one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the vessel body and water bath temperature control component according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the stirring assembly structure according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the lifting paddle in one embodiment of the present invention.

[0025] Figure label:

[0026] 100. Kettle body; 110. Stirring motor;

[0027] 200. Water bath temperature control component; 210. Water bath tub; 220. Heat transfer coil; 230. Slip ring;

[0028] 300. Mixing assembly; 310. Shaft; 320. Lifting paddle; 330. Scraper paddle; 340. Moving slip ring; 321. Supporting pipe rod; 322. finned flow channel. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0030] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0031] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a novel automatic temperature-controlled crystallizer.

[0032] Combination Figures 1-5 As shown, this utility model provides a novel automatic temperature-controlled crystallizing reactor, comprising: a reactor body 100, a water bath temperature control component 200, a stirring component 300, and a stirring motor 110 fixed to the top surface of the reactor body 100. The stirring motor 110 drives the stirring component 300 to rotate, and its output end is connected to the top of the stirring component 300 via a coupling. The stirring motor 110 is preferably a geared motor structure, which can provide sufficient torque while controlling the stability of the rotational speed.

[0033] The stirring assembly 300 includes: a shaft 310, a lifting paddle 320, a scraper paddle 330, and a movable slip ring 340 fixed to the surface of the scraper paddle 330. The shaft 310 is vertically disposed inside the vessel body 100, and the lifting paddle 320 and the scraper paddle 330 are sequentially fixed on it for rotating and stirring the material inside the vessel body 100. The movable slip ring 340 is fixed to the surface of the scraper paddle 330 and slidably arranged inside the fixed slip ring 230 to achieve sliding sealing and thermal conductive connection with the fixed slip ring 230.

[0034] The lifting paddle 320 is fixedly mounted on the surface of the shaft 310, and its outer surface is provided with a support tube 321. The support tube 321 is provided with a finned groove 322 for the flow of heat transfer oil. The finned grooves 322 are evenly arranged along the axial direction of the lifting paddle 320, and the distance between two adjacent finned grooves 322 is equal, realizing the connection and heat transfer function between the stirring assembly 300 and the heat transfer system.

[0035] The water bath temperature control assembly 200 includes: a water bath 210, a heat transfer coil 220, and fixed slip rings 230 located at the upper and lower ends of the heat transfer coil 220. The water bath 210 is a shell structure, fixedly sleeved on the outer wall surface of the vessel body 100. Cooling water or constant temperature water can be circulated inside the water bath 210 to control the temperature of the heat transfer oil in the heat transfer coil 220, thereby regulating the temperature of the vessel body 100.

[0036] The heat-conducting coil 220 is a metal spiral tube structure, spirally wound around the outer wall of the vessel body 100 and located inside the water bath 210. The heat-conducting coil 220 and the stirring assembly 300 are interconnected through a fixed slip ring 230 and a moving slip ring 340, forming a closed heat-conducting oil flow channel system. After being heated or cooled from the outside, the heat-conducting oil enters the flow channel inside the stirring assembly 300 through the fixed slip ring 230 and the moving slip ring 340, and is finally distributed throughout the entire stirring structure through the fin groove 322, achieving simultaneous heat conduction from the inside and outside.

[0037] The fixed slip ring 230 and the heat-conducting coil 220 are hollow structures filled with heat-conducting oil for efficient heat transfer. The outer surface of the fixed slip ring 230 has a groove for the rotating engagement of the moving slip ring 340. The fixed slip ring 230 and the moving slip ring 340 are arranged to slide relative to each other and remain coaxial with the vessel body 100 to ensure sealing and heat exchange reliability.

[0038] To ensure sealing and dynamic adaptability during the heat conduction process, a dynamic sealing ring is provided on the outer surface of the dynamic slip ring 340. The outer periphery of the dynamic slip ring 340 slides against the inner surface of the fixed slip ring 230 to achieve a reliable sliding seal between the dynamic slip ring 340 and the fixed slip ring 230.

[0039] In the use of this utility model, heat transfer oil is first injected into the heat transfer coil 220 through the water bath 210, and the temperature of the heat transfer oil is adjusted by constant temperature water or cooling water. The heat transfer oil flows in the heat transfer coil 220, and then enters the internal flow channel of the stirring assembly 300 through the fixed slip ring 230 and the moving slip ring 340. It then flows through the support pipe rod 321 and the finned groove 322, and passes through the lifting paddle 320 and the scraper paddle 330 to achieve internal heat transfer circulation. At the same time, the stirring motor 110 drives the shaft 310 to rotate, thereby driving the lifting paddle 320 and the scraper paddle 330 to stir and mix the materials in the vessel body 100.

[0040] Through the above structure, this utility model achieves dual-zone temperature control both outside the reactor body and inside the stirring chamber, improving temperature response speed and control accuracy, optimizing heat distribution during material crystallization, and possessing the advantages of high efficiency, safety, and controllability.

[0041] Working principle and usage process of this utility model:

[0042] This novel automatic temperature-controlled crystallizing vessel utilizes a temperature control structure formed by a spiral heat-conducting coil 220 and a water bath 210 externally mounted on the vessel body 100. Circulating cooling water or water at a specific temperature is introduced into the water bath 210 to heat or cool the vessel body 100 externally. Heat-conducting oil is used as a medium, circulating within the heat-conducting coil 220 and the stirring assembly 300 to further heat or cool the vessel body 100. The heat-conducting oil conducts heat within the heat-conducting coil 220 and the stirring assembly 300. Temperature control of the water bath 210 controls the surface temperature of the stirring assembly 300, thereby achieving uniform heat conduction or absorption within the material through dynamic contact between the stirring assembly 300 and the material. Furthermore, the water bath 210 controls the temperature of the material near the inner wall of the vessel body 100, while the stirring assembly 300 controls the temperature of the material in the axial region of the vessel body 100, ensuring temperature uniformity.

[0043] In operation, the stirring motor 110 first drives the shaft 310 to rotate, which in turn drives the lifting paddle 320 and scraper paddle 330 fixed on its surface to rotate and stir. During stirring, the surface of the lifting paddle is provided with a support tube 321 and a fin groove 322, which allows the lifting paddle 320 and scraper paddle 330 to communicate with the heat-conducting oil inside the heat-conducting coil 220, so that the material can fully contact the vessel body 100 and its internal structure, improve heat exchange efficiency, and promote the uniform formation of crystal particles.

[0044] The heat transfer oil enters the flow channel within the stirring assembly 300 via the heat transfer coil 220, fixed slip ring 230, and moving slip ring 340, and circulates between the scraper blade 330 and the lifting blade 320, thus enabling the stirring assembly 300 to also have a heat exchange function. This structure not only improves the rapid response capability of the temperature control system to the internal temperature regulation of the material, but also maintains sealing and system stability.

[0045] Throughout the entire process, the operator only needs to set the target temperature, adjust the temperature of the heat transfer oil through the temperature control system, and activate the stirring motor to achieve an automatic temperature-controlled and efficient stirring crystallization process.

[0046] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A novel automatic temperature-controlled crystallizing reactor, characterized in that, include: The vessel body (100), water bath temperature control assembly (200), stirring assembly (300), and stirring motor (110) fixed to the top surface of the vessel body (100) are provided. The output end of the stirring motor (110) is connected to the top of the stirring assembly (300). The stirring assembly (300) is rotatably mounted on the inner side of the vessel body (100). The water bath temperature control assembly (200) includes a water bath tank (210), a heat-conducting coil (220), and fixed slip rings (230) located at the upper and lower ends of the heat-conducting coil (220). The water bath tank (210) is fixedly sleeved on the surface of the vessel body (100). The stirring assembly (300) is fixed to the top surface of the vessel body (100). 0) Includes a shaft (310), a lifting blade (320), a scraper blade (330), and a movable slip ring (340) fixed to the surface of the scraper blade (330). The movable slip ring (340) is slidably arranged inside the fixed slip ring (230). The lifting blade (320) is fixed to the surface of the shaft (310), and the surface of the lifting blade (320) is provided with a support tube (321) communicating with the surface of the scraper blade (330). The scraper blade (330), the lifting blade (320), and the movable slip ring (340) are provided with flow channels inside and are connected to the fixed slip ring (230) and the heat-conducting coil (220) through the movable slip ring (340).

2. The novel automatic temperature-controlled crystallizing reactor according to claim 1, characterized in that, The stirring motor (110) is a geared motor structure, and its output end is connected to the stirring assembly (300) through a coupling for driving the rotation of the stirring assembly (300).

3. The novel automatic temperature-controlled crystallizing reactor according to claim 1, characterized in that, Both the fixed slip ring (230) and the heat-conducting coil (220) are hollow structures, and heat-conducting oil is added to the inside. The surface of the fixed slip ring (230) is provided with a sliding groove for the rotation of the moving slip ring (340). The fixed slip ring (230) and the moving slip ring (340) are arranged coaxially with the vessel body (100).

4. The novel automatic temperature-controlled crystallizing reactor according to claim 1, characterized in that, The heat-conducting coil (220) is spirally wound around the surface of the vessel body (100), and the heat-conducting coil (220) is located inside the water bath (210). The heat-conducting coil (220) is a metal tube structure.

5. A novel automatic temperature-controlled crystallizing reactor according to claim 1, characterized in that, The surface of the moving slip ring (340) is provided with a dynamic sealing ring, and the outer periphery of the moving slip ring (340) slides against the inner side of the fixed slip ring (230) for sliding sealing between the fixed slip ring (230) and the moving slip ring (340).

6. A novel automatic temperature-controlled crystallizing reactor according to claim 1, characterized in that, The inner flow channels of the scraper blade (330) and the lifting blade (320) are connected by the bearing tube rod (321), and the inner flow channel of the scraper blade (330) is connected to the heat-conducting coil (220) through the moving slip ring (340) and the fixed slip ring (230).

7. A novel automatic temperature-controlled crystallizing reactor according to claim 1, characterized in that, The inner side of the lifting propeller (320) is provided with a number of evenly distributed fin grooves (322), and the gaps between adjacent fin grooves (322) are equal.

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