A reaction kettle capable of precisely controlling the temperature of raw material feed

Abstract

The utility model discloses a kind of reaction kettle of precise control raw material feeding temperature, belong to reaction kettle technical field, comprising: kettle body, the inner wall of the kettle body is provided with the feeding mechanism of temperature control to raw material;Through the cooperation of above each device, in the utility model, by being provided with feeding mechanism, it is integrated on the conveying pipe of raw material to realize the preliminary temperature adjustment and dynamic compensation to raw material, make the overall structure of reaction kettle compact, improve the temperature response efficiency of reaction kettle, realize the substantial temperature rise to raw material under the action of temperature-adjusting jacket, accelerate the temperature rise efficiency of raw material temperature, so that raw material temperature quickly approaches target temperature, improve the temperature increase efficiency of reaction kettle for raw material, utilize helical guide vane to improve the heat exchange efficiency and uniformity of raw material compensation, further improve the accuracy of raw material temperature control, simultaneously, using compensation jacket to compensate the raw material of last end of conveying pipe, ensure the accuracy of raw material feeding temperature.

Description

Technical Field

[0001] This utility model belongs to the field of reaction vessel technology, and in particular relates to a reaction vessel for precisely controlling the feed temperature of raw materials. Background Technology

[0002] A reaction vessel, also known as a reaction tank or pressure vessel, is a closed container that can perform heating, evaporation, cooling, and mixing functions through structural design and parameter configuration, and complete multiphase reactions such as gas-liquid and liquid-gas-liquid-solid reactions. In the production of raw materials for automotive-related systems, raw materials are fed into the reaction vessel under negative pressure. During the feeding process, the feed temperature of the raw materials needs to be controlled to avoid excessive temperature fluctuations in the raw materials within the reaction vessel, which could cause crystallization or temperature cross-contamination, thus adversely affecting product quality.

[0003] To control the feed temperature of raw materials, most current reactors have jackets or coils installed on the outer surface of the feed pipe. However, most existing temperature control methods suffer from insufficient temperature control accuracy and uneven temperature field, which can easily affect product quality.

[0004] Therefore, this invention provides a reaction vessel for precisely controlling the feed temperature of raw materials to solve the above-mentioned problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a reaction vessel for precisely controlling the feed temperature of raw materials, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A reaction vessel for precisely controlling the feed temperature of raw materials includes: a vessel body, a discharge pipe connected to the side wall of the vessel body, a control valve fixedly installed inside the discharge pipe, a heat insulation sleeve fixedly installed on the inner wall of the vessel body's shell cavity, a first temperature sensor fixedly installed on the inner wall of the vessel body's shell cavity, one end of the first temperature sensor extending into the interior of the vessel body, a feed mechanism for controlling the temperature of raw materials provided on the inner wall of the vessel body, and an agitation mechanism for mixing raw materials provided inside the vessel body;

[0010] The feeding mechanism includes a conveying pipe, the outer surface of which is fixedly connected to the inner wall of the vessel cavity. One end of the conveying pipe extends to the outer surface of the vessel and the other end extends into the interior of the vessel. A temperature regulating jacket is fixedly installed on the outer surface of the conveying pipe.

[0011] As a further description of the above technical solution:

[0012] The temperature regulating jacket is located outside the vessel body. The outer surface of the temperature regulating jacket is symmetrically connected with heat-conducting medium conveying pipes, which are located in the upper and lower halves of the temperature regulating jacket, respectively.

[0013] As a further description of the above technical solution:

[0014] A compensation jacket is fixedly installed on the outer surface of the conveying pipe. The compensation jacket is located inside the vessel body. A compensation medium conveying pipe is symmetrically connected to the outer surface of the compensation jacket. The compensation medium conveying pipe is located in the upper half and lower half of the compensation jacket, respectively.

[0015] As a further description of the above technical solution:

[0016] The inner wall of the compensation jacket is fixedly installed with a spiral guide vane, and the side wall of the spiral guide vane is in contact with the outer surface of the conveying pipe.

[0017] As a further description of the above technical solution:

[0018] The feeding mechanism also includes a raw material distributor. The inner wall of the raw material distributor is rotatably connected to the outer surface of the conveying pipe. The raw material distributor is located at the end of the conveying pipe. The lower surface of the raw material distributor is provided with several holes. A transmission gear is fixedly installed on the outer surface of the raw material distributor. A second temperature sensor is fixedly installed inside the raw material distributor.

[0019] As a further description of the above technical solution:

[0020] The stirring mechanism includes a servo motor and a fixed tube. The lower surface of the servo motor is fixedly connected to the upper surface of the vessel body via a support rod. A rotating rod is fixedly installed at the output end of the servo motor. One end of the rotating rod extends into the interior of the vessel body. An installation sleeve is fixedly installed on the outer surface of the rotating rod. Several stirring rods are fixedly installed at equal intervals on the outer surface of the installation sleeve. A spiral rod is fixedly installed at one end of the rotating rod.

[0021] As a further description of the above technical solution:

[0022] Support rods are fixedly installed at equal intervals on the outer surface of the fixed tube. One end of the support rod is fixedly connected to the inner wall of the vessel body, and one end of the spiral rod extends into the interior of the fixed tube.

[0023] As a further description of the above technical solution:

[0024] A drive gear is fixedly mounted on the outer surface of the rotating rod, and the drive gear meshes with the transmission gear.

[0025] (III) Beneficial Effects

[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0027] 1. In this utility model, by setting up a feeding mechanism, the initial temperature adjustment and dynamic compensation of the raw materials are integrated into the raw material conveying pipe, making the overall structure of the reactor compact and improving the temperature control response efficiency of the reactor. Under the action of the temperature adjustment jacket, the raw materials are heated significantly, accelerating the temperature rise efficiency of the raw materials, so that the raw material temperature quickly approaches the target temperature, improving the heating efficiency of the reactor for raw materials. The spiral guide vanes improve the heat exchange efficiency and uniformity of the raw material compensation, further improving the accuracy of raw material temperature control. At the same time, the compensation jacket compensates the raw materials at the last end of the conveying pipe, ensuring the accuracy of the raw material feeding temperature.

[0028] 2. In this utility model, by setting up a stirring mechanism, the raw materials in the reaction vessel are lifted and lowered by using a screw rod, which increases the stirring range of the raw materials in the reaction vessel, thereby increasing the stirring area of ​​the raw materials. In combination with the stirring rod, the raw materials are fully stirred, which improves the reaction effect and reaction efficiency of the reaction vessel on the raw materials and ensures the overall quality of the raw materials after the reaction. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of a reactor for precisely controlling the feed temperature of raw materials.

[0030] Figure 2 This is a schematic cross-sectional view of a reactor designed for precise control of raw material feed temperature.

[0031] Figure 3 This is a cross-sectional schematic diagram of the feeding mechanism in a reactor for precisely controlling the feed temperature of raw materials.

[0032] Figure 4 This is an exploded structural diagram of the feeding mechanism in a reactor for precisely controlling the feed temperature of raw materials.

[0033] Figure 5 In a reaction vessel for precise control of raw material feed temperature Figure 2 A magnified structural diagram of point A in the middle.

[0034] Legend:

[0035] 1. Kettle body; 2. Discharge pipe; 3. Feeding mechanism; 301. Conveying pipe; 302. Temperature regulating jacket; 303. Compensating jacket; 304. Spiral guide vane; 305. Compensating medium conveying pipe; 306. Raw material distributor; 307. Transmission gear; 308. Heat transfer medium conveying pipe; 4. Stirring mechanism; 401. Servo motor; 402. Rotating rod; 403. Mounting sleeve; 404. Stirring rod; 405. Spiral rod; 406. Fixing pipe; 407. Support rod; 5. Insulation sleeve; 6. Drive gear. Detailed Implementation

[0036] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0037] In specific implementation, such as Figures 1-5 As shown, this utility model provides a technical solution: a reaction vessel for precisely controlling the feed temperature of raw materials, including a vessel body 1, a discharge pipe 2 connected to the side wall of the vessel body 1, a control valve fixedly installed inside the discharge pipe 2, a heat insulation sleeve 5 fixedly installed on the inner wall of the shell cavity of the vessel body 1, a first temperature sensor fixedly installed on the inner wall of the shell cavity of the vessel body 1, one end of the first temperature sensor extending into the interior of the vessel body 1, a feeding mechanism 3 for controlling the temperature of raw materials provided on the inner wall of the vessel body 1, and a stirring mechanism 4 for mixing raw materials provided inside the vessel body 1; wherein, the feeding mechanism 3 includes a conveying pipe 301, the outer surface of the conveying pipe 301 is fixedly connected to the inner wall of the shell cavity of the vessel body 1, one end of the conveying pipe 301 extends to the outer surface of the upper surface of the vessel body 1, the other end of the conveying pipe 301 extends into the interior of the vessel body 1, and a temperature regulating jacket 302 is fixedly installed on the outer surface of the conveying pipe 301.

[0038] The temperature control jacket 302 is located outside the vessel body 1. The outer surface of the temperature control jacket 302 is symmetrically connected with heat transfer medium conveying pipes 308, which are located in the upper and lower parts of the temperature control jacket 302 respectively.

[0039] A compensation jacket 303 is fixedly installed on the outer surface of the conveying pipe 301. The compensation jacket 303 is located inside the vessel body 1. A compensation medium conveying pipe 305 is symmetrically connected to the outer surface of the compensation jacket 303. The compensation medium conveying pipe 305 is located in the upper half and lower half of the compensation jacket 303 respectively.

[0040] A spiral guide vane 304 is fixedly installed on the inner wall of the compensation jacket 303, and the side wall of the spiral guide vane 304 is in contact with the outer surface of the conveying pipe 301.

[0041] The feeding mechanism 3 also includes a raw material distributor 306. The inner wall of the raw material distributor 306 is rotatably connected to the outer surface of the conveying pipe 301. The raw material distributor 306 is located at the end of the conveying pipe 301. The lower surface of the raw material distributor 306 is provided with several holes. A transmission gear 307 is fixedly installed on the outer surface of the raw material distributor 306. A second temperature sensor is fixedly installed inside the raw material distributor 306.

[0042] Specifically, by setting up the feeding mechanism 3, the raw material enters the vessel 1 through the conveying pipe 301 under negative pressure. When the raw material flows in the conveying pipe 301, high-temperature heat transfer medium is injected into the temperature regulating jacket 302 through the heat transfer medium conveying pipe 308 in the lower half of the temperature regulating jacket 302. After flowing in the temperature regulating jacket 302, the heat transfer medium will be discharged from the heat transfer medium conveying pipe 308 in the upper half. Under the action of the heat transfer medium, the raw material in the conveying pipe 301 is initially and significantly heated, so that the raw material quickly approaches the target feeding temperature. Then, the raw material in the conveying pipe passes through the raw material distributor. The holes on the lower surface of 306 discharge a fine liquid stream. The compensation medium, which is at the same temperature as the vessel body 1, is injected into the compensation jacket 303 through the compensation medium conveying pipe 305. Under the action of the spiral guide plate 304, the compensation medium spirals upward in the compensation jacket 303. By extending the flow path, the heat exchange between the raw material and the compensation medium is ensured, so that the temperature of the raw material and the vessel body 1 are consistent. This achieves temperature compensation for the raw material at the last end of the conveying pipe 301. The second temperature sensor monitors the raw material in the raw material distributor 306 in real time and accurately controls the feed temperature of the raw material based on the monitored temperature.

[0043] It should be noted that the selection of the first and second temperature sensors and the control unit in the above description are all selected as needed. This part is well-known technology in the field and will not be elaborated here.

[0044] The stirring mechanism 4 includes a servo motor 401 and a fixed tube 406. The lower surface of the servo motor 401 is fixedly connected to the upper surface of the vessel body 1 through a support rod 407. A rotating rod 402 is fixedly installed at the output end of the servo motor 401. One end of the rotating rod 402 extends into the interior of the vessel body 1. An installation sleeve 403 is fixedly installed on the outer surface of the rotating rod 402. Several stirring rods 404 are fixedly installed at equal intervals on the outer surface of the installation sleeve 403. A spiral rod 405 is fixedly installed at one end of the rotating rod 402.

[0045] Support rods 407 are fixedly installed at equal intervals on the outer surface of the fixed tube 406. One end of the support rod 407 is fixedly connected to the inner side wall of the vessel body 1, and one end of the spiral rod 405 extends into the interior of the fixed tube 406.

[0046] A drive gear 6 is fixedly installed on the outer surface of the rotating rod 402, and the drive gear 6 meshes with the transmission gear 307.

[0047] Specifically, by setting up a stirring mechanism 4, a servo motor 401 drives a rotating rod 402 to rotate inside the reactor body 1. At this time, the rotating rod 402 drives the stirring rod 404 to rotate synchronously through the mounting sleeve 403. While rotating, the rotating rod 402 also drives the spiral rod 405 to rotate inside the fixed tube 406. As the spiral rod 405 rotates, the raw material moves upward to the top of the fixed tube 406. As the raw material moves upward, it moves out from the top of the fixed tube 406. In cooperation with the stirring rod 404, the raw material inside the reactor body 1 is fully stirred, improving the uniformity of the stirring of the raw material in the reactor.

[0048] Working principle: Isocyanate and polyether polyol and other raw materials are injected into the interior of the reactor body 1 through the feeding mechanism 3 under negative pressure. During the feeding process, the temperature regulating jacket 302 and the compensation jacket 303 in the feeding mechanism 3 will control the temperature of the raw materials in the conveying pipe 301. After the raw materials enter the reactor body 1, the insulation jacket 5 will keep the reactor body 1 warm. The first temperature sensor will monitor the temperature of the raw materials in the reactor body 1 in real time. Then, the stirring mechanism 4 will stir the raw materials in the reactor body 1. After the raw materials are mixed, the raw materials in the reactor body 1 will be discharged through the discharge pipe 2.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A reaction vessel for precisely controlling the feed temperature of raw materials, characterized in that: include: The vessel body (1) has a discharge pipe (2) connected to its side wall. A control valve is fixedly installed inside the discharge pipe (2). A heat insulation sleeve (5) is fixedly installed on the inner wall of the vessel body (1). A first temperature sensor is fixedly installed on the inner wall of the vessel body (1). One end of the first temperature sensor extends into the interior of the vessel body (1). A feeding mechanism (3) for controlling the temperature of the raw materials is provided on the inner wall of the vessel body (1). A stirring mechanism (4) for mixing the raw materials is provided inside the vessel body (1). The feeding mechanism (3) includes a conveying pipe (301), the outer surface of which is fixedly connected to the inner wall of the shell cavity of the vessel body (1), one end of which extends to the outer surface of the upper surface of the vessel body (1), and the other end of which extends to the interior of the vessel body (1). A temperature regulating jacket (302) is fixedly installed on the outer surface of the conveying pipe (301). The temperature regulating jacket (302) is located outside the vessel body (1). The outer surface of the temperature regulating jacket (302) is symmetrically connected with heat-conducting medium conveying pipes (308). The heat-conducting medium conveying pipes (308) are located in the upper half and lower half of the temperature regulating jacket (302). The outer surface of the conveying pipe (301) is fixedly installed with a compensation jacket (303), which is located inside the vessel body (1). The outer surface of the compensation jacket (303) is symmetrically connected with a compensation medium conveying pipe (305), which is located in the upper half and lower half of the compensation jacket (303).

2. The reaction vessel for precisely controlling the feed temperature of raw materials according to claim 1, characterized in that, The inner wall of the compensation jacket (303) is fixedly installed with a spiral guide vane (304), and the side wall of the spiral guide vane (304) is in contact with the outer surface of the conveying pipe (301).

3. The reaction vessel for precisely controlling the feed temperature of raw materials according to claim 1, characterized in that, The feeding mechanism (3) also includes a raw material distributor (306), the inner wall of which is rotatably connected to the outer surface of the conveying pipe (301), the raw material distributor (306) is located at the end of the conveying pipe (301), the lower surface of which is provided with several holes, a transmission gear (307) is fixedly installed on the outer surface of which, and a second temperature sensor is fixedly installed inside which.

4. The reaction vessel for precisely controlling the feed temperature of raw materials according to claim 1, characterized in that, The stirring mechanism (4) includes a servo motor (401) and a fixed tube (406). The lower surface of the servo motor (401) is fixedly connected to the upper surface of the vessel body (1) through a support rod (407). A rotating rod (402) is fixedly installed at the output end of the servo motor (401). One end of the rotating rod (402) extends into the interior of the vessel body (1). An installation sleeve (403) is fixedly installed on the outer surface of the rotating rod (402). Several stirring rods (404) are fixedly installed at equal intervals on the outer surface of the installation sleeve (403). A spiral rod (405) is fixedly installed at one end of the rotating rod (402).

5. The reaction vessel for precisely controlling the feed temperature of raw materials according to claim 4, characterized in that, Support rods (407) are fixedly installed at equal intervals on the outer surface of the fixed tube (406). One end of the support rod (407) is fixedly connected to the inner wall of the vessel body (1), and one end of the spiral rod (405) extends into the interior of the fixed tube (406).

6. The reaction vessel for precisely controlling the feed temperature of raw materials according to claim 4, characterized in that, A drive gear (6) is fixedly installed on the outer surface of the rotating rod (402), and the drive gear (6) meshes with the transmission gear (307).

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