Temperature-controlled stirring device for malonic acid synthesis reaction

Abstract

The utility model discloses a malonic acid synthesis reaction's temperature control stirring device relates to high and low temperature reaction kettle technical field, the utility model discloses a temperature control reaction kettle, movable support frame, first oil pipe, second oil pipe, cooling box, first liquid pipe and second liquid pipe, and then through the installation cooling box, first liquid pipe and second liquid pipe, the raw material of malonic acid synthesis reaction is sent into the temperature control reaction kettle inside, and the first oil pipe sends the high temperature heat transfer oil into the interlayer of temperature control reaction kettle, and the inside stirring rod of temperature control reaction kettle rotates, and cooperates high temperature and accelerates malonic acid synthesis reaction, and after completing malonic acid synthesis, the cooling liquid is sent into the inside of cooling box through the first liquid pipe by the delivery pump, and the heat transfer oil in the interlayer of auxiliary temperature control reaction kettle is cooled down fast, and the second oil pipe returns the low temperature heat transfer oil to the heat transfer oil heating box, compared with the heat transfer oil natural cooling, the cooling speed is improved, and the functionality of temperature control reaction kettle is increased.

Description

Technical Field

[0001] This invention belongs to the field of high and low temperature reaction vessel technology, and in particular relates to a temperature-controlled stirring device for malonic acid synthesis reaction. Background Technology

[0002] The synthesis of malonic acid is temperature-sensitive, requiring control of side reactions at low temperatures and promotion of the main reaction at high temperatures. High and low temperature reactors have precise heating and cooling capabilities and constant temperature control. Combined with stirring, they ensure uniform mixing and heat transfer of reactants, thereby improving yield and selectivity. They are ideal temperature-controlled stirring devices for this reaction.

[0003] In the malonic acid synthesis reaction, the high and low temperature reactor is heated by introducing high-temperature heat transfer oil through the jacket and using a stirring rod, which effectively increases the reaction rate. However, the device lacks a structure to help the heat transfer oil cool down quickly, so the heat transfer oil can only rely on natural cooling after the reaction is completed. The cooling process is slow, which prolongs the experimental cycle and affects the connection of subsequent experiments and the overall efficiency. This design defect limits the application efficiency of the reactor in the case of frequent temperature change operations. Utility Model Content

[0004] The purpose of this invention is to provide a temperature-controlled stirring device for malonic acid synthesis reaction. Through the cooperation between components such as the cooling box, the first liquid delivery pipe, and the second liquid delivery pipe, coolant can be conveniently sent into the cooling box to assist in heat dissipation, thus solving the problem that existing reactors lack auxiliary heat transfer oil heat dissipation structures.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a temperature-controlled stirring device for malonic acid synthesis reaction, comprising a temperature-controlled reactor, a movable support frame, a first oil delivery pipe, and a second oil delivery pipe. The movable support frame is bolted to the temperature-controlled reactor. The first oil delivery pipe is connected to one side of the temperature-controlled reactor, and the second oil delivery pipe is connected to the bottom of the temperature-controlled reactor. A cooling box is fitted onto the temperature-controlled reactor. The inlet of the cooling box is connected to a first liquid delivery pipe, and the outlet of the cooling box is connected to a second liquid delivery pipe. Valves are fixedly connected to the first oil delivery pipe, the second oil delivery pipe, the first liquid delivery pipe, and the second liquid delivery pipe.

[0006] Furthermore, the cooling box is provided with L-shaped buckle frames on both sides, and buckle seats that pass through the L-shaped buckle frames are symmetrically fixedly connected to the cooling box. A protective shell that is fixedly connected to the movable support frame is provided below the L-shaped buckle frame. An electric push rod is fixedly connected inside the protective shell, and the moving end of the electric push rod is bolted to the L-shaped buckle frame.

[0007] Furthermore, both the first infusion tube and the second infusion tube are corrugated designs.

[0008] Furthermore, rectangular connecting plates are symmetrically fixedly connected to the L-shaped buckle frame, and limiting guide rods that pass through the protective shell are fixedly connected to the rectangular connecting plates.

[0009] Furthermore, the buckle seat is symmetrically slidably connected with spring blocks inside, and the spring blocks are in contact with the surface of the L-shaped buckle frame.

[0010] Furthermore, heat dissipation fins are fixedly connected at equal intervals on the surface of the cooling box.

[0011] Furthermore, the interior of the cooling box is designed to be inclined, with the height of the left side of the interior being greater than the height of the right side.

[0012] This utility model has the following beneficial effects: This invention, through the installation of a cooling box, a first infusion pipe, and a second infusion pipe, delivers the raw materials for the malonic acid synthesis reaction into a temperature-controlled reactor. The first infusion pipe delivers high-temperature heat transfer oil into the jacket of the temperature-controlled reactor. Inside the temperature-controlled reactor, the stirring rod rotates, accelerating the malonic acid synthesis reaction in conjunction with the high temperature. After the malonic acid synthesis is completed, a delivery pump sends coolant through the first infusion pipe into the cooling box to assist in the rapid cooling of the heat transfer oil in the jacket of the temperature-controlled reactor. The second infusion pipe returns the low-temperature heat transfer oil to the heat transfer oil heating box. Compared with the natural cooling of the heat transfer oil, this invention improves the cooling speed and increases the functionality of the temperature-controlled reactor.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of the temperature-controlled reaction vessel and movable support frame of this utility model; Figure 3 This is an enlarged schematic diagram of the electric actuator of this utility model; Figure 4 This is a cross-sectional view of the buckle seat of this utility model; Figure 5 This is a cross-sectional view of the cooling box of this utility model.

[0016] The attached diagram lists the components represented by each number as follows: 1. Temperature-controlled reactor; 2. Movable support frame; 3. First oil supply pipe; 4. Second oil supply pipe; 5. Cooling box; 6. First liquid supply pipe; 7. Second liquid supply pipe; 8. L-shaped buckle frame; 9. Buckle seat; 10. Protective shell; 11. Electric push rod; 12. Rectangular connecting plate; 13. Limiting guide rod; 14. Spring block; 15. Heat dissipation fins. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1-5 This utility model is a temperature-controlled stirring device for malonic acid synthesis reaction, including a temperature-controlled reactor 1, a movable support frame 2, a first oil supply pipe 3, and a second oil supply pipe 4. The movable support frame 2 is bolted to the temperature-controlled reactor 1. The first oil supply pipe 3 is connected to one side of the temperature-controlled reactor 1, and the second oil supply pipe 4 is connected to the bottom of the temperature-controlled reactor 1. A cooling box 5 is fitted on the temperature-controlled reactor 1. The inlet of the cooling box 5 is connected to a first liquid supply pipe 6, and the outlet of the cooling box 5 is connected to a second liquid supply pipe 7. Valves are fixedly connected to the first oil supply pipe 3, the second oil supply pipe 4, the first liquid supply pipe 6, and the second liquid supply pipe 7. The end of the first oil supply pipe 3 away from the temperature-controlled reactor 1 and the end of the second oil supply pipe 4 away from the temperature-controlled reactor 1 are both connected to a heat transfer oil heating box. The end of the first liquid supply pipe 6 away from the cooling box 5 and the end of the second liquid supply pipe 7 away from the cooling box 5 are both connected to a delivery pump. The bolted connection, the heat transfer oil heating box, and the delivery pump are all prior art, so they are not shown in the attached drawings.

[0019] One specific application of this embodiment is as follows: the raw materials for the malonic acid synthesis reaction are fed into the temperature-controlled reactor 1. The first oil supply pipe 3 delivers high-temperature heat transfer oil into the jacket of the temperature-controlled reactor 1. The stirring rod inside the temperature-controlled reactor 1 rotates, which, together with the high temperature, accelerates the malonic acid synthesis reaction. After the malonic acid synthesis is completed, the delivery pump sends the coolant through the first liquid supply pipe 6 into the cooling box 5 to help the heat transfer oil in the jacket of the temperature-controlled reactor 1 cool down quickly. The second oil supply pipe 4 returns the low-temperature heat transfer oil to the heat transfer oil heating box. Compared with the natural cooling of the heat transfer oil, the cooling speed is improved, and the functionality of the temperature-controlled reactor 1 is increased.

[0020] The cooling box 5 is provided with L-shaped buckle frames 8 on both sides. The cooling box 5 is symmetrically fixedly connected with buckle seats 9 that pass through the L-shaped buckle frames 8. The lower part of the L-shaped buckle frame 8 is provided with a protective shell 10 that is fixedly connected to the movable support frame 2. An electric push rod 11 is fixedly connected inside the protective shell 10. The moving end of the electric push rod 11 is bolted to the L-shaped buckle frame 8.

[0021] One specific application of this embodiment is: the buckle seat 9 passes through the interior of the L-shaped buckle frame 8, which activates the electric push rod 11 inside the protective shell 10. The moving end of the electric push rod 11 rises or falls, driving the cooling box 5 to rise or fall, increasing the range of motion of the cooling box 5, increasing the cooling range, and improving the cooling efficiency.

[0022] Both the first infusion tube 6 and the second infusion tube 7 are corrugated designs.

[0023] One specific application of this embodiment is that when the cooling box 5 moves up and down, the corrugated pipe can extend and retract with the movement of the cooling box 5, which improves the convenience of the first infusion pipe 6 and the second infusion pipe 7.

[0024] A rectangular connecting plate 12 is symmetrically fixedly connected to the L-shaped buckle bracket 8, and a limiting guide rod 13 that passes through the protective shell 10 is fixedly connected to the rectangular connecting plate 12.

[0025] One specific application of this embodiment is that when the L-shaped buckle frame 8 moves up and down, the limiting guide rod 13 slides up and down along the inside of the protective shell 10 to ensure the stability of the movement of the L-shaped buckle frame 8.

[0026] The buckle seat 9 has a spring block 14 symmetrically slidingly connected inside, and the spring block 14 is in contact with the surface of the L-shaped buckle frame 8.

[0027] One specific application of this embodiment is as follows: When the L-shaped buckle frame 8 is brought close to the buckle seat 9, the spring buckle block 14 retracts, the buckle seat 9 passes through the interior of the L-shaped buckle frame 8, and the spring buckle block 14 returns to its original position and opens, firmly connecting the L-shaped buckle frame 8 and the buckle seat 9. Pressing the spring buckle block 14 retracts it into the buckle seat 9, making it easy to separate the L-shaped buckle frame 8 and the buckle seat 9. This facilitates quick connection or separation of the L-shaped buckle frame 8 and the buckle seat 9. After disassembling the movable support frame 2, the cooling box 5 can be removed for inspection and maintenance.

[0028] Cooling box 5 has heat dissipation fins 15 fixedly connected at equal intervals on its surface.

[0029] One specific application of this embodiment is that it can increase the contact area between the cooling box 5 and the air, thereby improving the auxiliary heat dissipation effect of the cooling box 5.

[0030] The interior of the cooling box 5 is designed to be tilted, with the height of the left side being greater than that of the right side.

[0031] One specific application of this embodiment is that when the coolant is drawn out, the coolant inside the cooling box 5 automatically gathers towards the outlet, preventing coolant residue from remaining on the inner wall of the cooling box 5, thus increasing the functionality of the cooling box 5.

[0032] Working Principle: The raw materials for the malonic acid synthesis reaction are fed into the temperature-controlled reactor 1. The first oil supply pipe 3 delivers high-temperature heat transfer oil into the jacket of the temperature-controlled reactor 1. The stirring rod inside the temperature-controlled reactor 1 rotates, accelerating the malonic acid synthesis reaction in conjunction with the high temperature. After the malonic acid synthesis is complete, the delivery pump sends coolant through the first liquid supply pipe 6 into the cooling box 5 to assist in the rapid cooling of the heat transfer oil in the jacket of the temperature-controlled reactor 1. The second oil supply pipe 4 returns the low-temperature heat transfer oil to the heat transfer oil heating box. Compared to natural cooling of the heat transfer oil, this increases the cooling speed and enhances the functionality of the temperature-controlled reactor 1. The latch seat 9 passes through the L-shaped latch frame 8, activating the electric push rod 11 inside the protective shell 10. The moving end of the electric push rod 11 rises or falls, causing the cooling box 5 to rise or fall, increasing the range of motion of the cooling box 5, expanding the cooling range, and improving cooling efficiency. As the cooling box 5 moves up and down, the corrugated pipe can extend and retract with the movement of the cooling box 5, improving... The convenience of the first infusion tube 6 and the second infusion tube 7 is ensured by the limiting guide rod 13 sliding up and down along the inside of the protective shell 10 when the L-shaped buckle frame 8 moves up and down, thus ensuring the stability of the movement of the L-shaped buckle frame 8. When the L-shaped buckle frame 8 is brought close to the buckle seat 9, the spring buckle block 14 retracts, the buckle seat 9 passes through the inside of the L-shaped buckle frame 8, and the spring buckle block 14 returns to its original position and opens, firmly connecting the L-shaped buckle frame 8 and the buckle seat 9. Pressing the spring buckle block 14 retracts it into the buckle seat 9, making it easy to separate the L-shaped buckle frame 8 and the buckle seat 9. This facilitates quick connection or separation of the L-shaped buckle frame 8 and the buckle seat 9. After disassembling the movable support frame 2, the cooling box 5 can be removed for inspection and maintenance. The heat dissipation fins 15 can increase the contact area between the cooling box 5 and the air, improving the auxiliary heat dissipation effect of the cooling box 5. When the coolant is extracted, the coolant inside the cooling box 5 automatically gathers towards the outlet, preventing coolant residue from remaining on the inner wall of the cooling box 5, thus increasing the functionality of the cooling box 5.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example 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.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A temperature-controlled stirring device for malonic acid synthesis reaction, comprising a temperature-controlled reactor (1), a movable support frame (2), a first oil supply pipe (3), and a second oil supply pipe (4), wherein the movable support frame (2) is bolted to the temperature-controlled reactor (1), the first oil supply pipe (3) is connected to one side of the temperature-controlled reactor (1), and the second oil supply pipe (4) is connected to the bottom end of the temperature-controlled reactor (1), characterized in that: The temperature-controlled reactor (1) is fitted with a cooling box (5). The inlet of the cooling box (5) is connected to a first infusion pipe (6), and the outlet of the cooling box (5) is connected to a second infusion pipe (7). Valves are fixedly connected to the first oil pipe (3), the second oil pipe (4), the first infusion pipe (6), and the second infusion pipe (7). L-shaped buckle frames (8) are provided on both sides of the cooling box (5). Buckle seats (9) that pass through the L-shaped buckle frames (8) are symmetrically fixedly connected to the cooling box (5). A protective shell (10) that is fixedly connected to the movable support frame (2) is provided below the L-shaped buckle frame (8). An electric push rod (11) is fixedly connected inside the protective shell (10). The moving end of the electric push rod (11) is bolted to the L-shaped buckle frame (8).

2. The temperature-controlled stirring apparatus for the malonic acid synthesis reaction according to claim 1, characterized in that, Both the first infusion tube (6) and the second infusion tube (7) are corrugated designs.

3. The temperature-controlled stirring apparatus for the malonic acid synthesis reaction according to claim 1, characterized in that, A rectangular connecting plate (12) is symmetrically fixedly connected to the L-shaped buckle frame (8), and a limiting guide rod (13) that passes through the protective shell (10) is fixedly connected to the rectangular connecting plate (12).

4. The temperature-controlled stirring apparatus for the malonic acid synthesis reaction according to claim 1, characterized in that, The buckle seat (9) is symmetrically slidably connected with a spring buckle block (14), and the spring buckle block (14) is in contact with the surface of the L-shaped buckle frame (8).

5. The temperature-controlled stirring apparatus for the malonic acid synthesis reaction according to claim 1, characterized in that, The surface of the cooling box (5) is fixedly connected with heat dissipation fins (15) at equal intervals.

6. The temperature-controlled stirring apparatus for the malonic acid synthesis reaction according to claim 5, characterized in that, The cooling box (5) has an inclined interior design, and the height of the left side inside the cooling box (5) is greater than the height of the right side inside.

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