A green catalytic reaction device for ethyl nicotinate

Abstract

The utility model proposes a kind of green catalytic ethyl nicotinate reaction device, it is related to reaction device technical field, including rack, the inside fixed mounting of rack is equipped with the expansion frame of telescopic adjustment, the inside fixed mounting of expansion frame is equipped with the laser ranging sensor of the position detection to it.The utility model has the advantages that: in catalytic ethyl nicotinate reaction device inside setting adjustable cavity formed by rack and expansion frame is used to place catalyst, can adjust the position of expansion frame according to the size and dosage of catalyst, the size of adjustable cavity is adjusted, and output power stirring rod and rack are connected, so that stirring frame can drive rack to rotate, further drive the catalyst placed to rotate, so that catalyst can be in full contact with reactant, improve the efficiency of catalytic reaction, it is convenient to adjust the size of cavity according to the different catalyst used, improve the convenience of reaction device use.

Description

Technical Field

[0001] This utility model relates to the field of reaction device technology, and in particular to a green catalytic ethyl nicotinate reaction device. Background Technology

[0002] In the field of organic synthesis, ethyl nicotinate, as an important organic intermediate, is widely used in the pharmaceutical, pesticide, and fragrance industries. However, traditional ethyl nicotinate synthesis reactions often rely on energy-intensive and polluting processes, which are inconsistent with the current development concept of green chemistry. With increasing environmental awareness and the promotion of sustainable development, it is crucial to develop reaction devices for the green catalytic synthesis of ethyl nicotinate, replacing traditional strong acid catalysis with green catalytic processes.

[0003] Existing reaction devices typically have fixed internal reaction chamber dimensions, making it difficult to adjust the chamber size according to different catalysts used. This results in poor applicability and inconvenience in use. Utility Model Content

[0004] Therefore, the purpose of this invention is to propose a green catalytic ethyl nicotinate reaction device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0005] To achieve the above objectives, one embodiment of this utility model provides a green catalytic ethyl nicotinate reaction device, comprising a stirring tank for stirring, a stirring rod for outputting power fixedly installed inside the stirring tank, a storage rack for storing catalyst fixedly installed inside the stirring rod, an extension frame for telescopic adjustment fixedly installed inside the storage rack, a laser rangefinder sensor for detecting the position of the extension frame fixedly installed inside the extension frame, the laser rangefinder sensor being signal-connected to a microprocessor for signal processing and automatic control, the microprocessor being signal-connected to an emission control board for opening and closing the storage rack, an addition end cap for sealing the top of the storage rack being snapped shut, and a locking block for locking and positioning the addition end cap being fixedly installed inside the addition end cap.

[0006] Preferably, in any of the above embodiments, the mixing tank has a reaction chamber for reaction, and the bottom of the reaction chamber has a connection hole for fixing the stirring rod. The stirring rod includes a drive motor connected to a microprocessor signal and a rotating rod for transmitting power. The drive motor is fixedly installed at the bottom of the mixing tank by bolts, and the output end of the drive motor is fixedly installed with a rotating rod rotatably connected to the inside of the mixing tank.

[0007] The above technical solution is adopted as follows: The mixing tank (stainless steel welded) has a reaction chamber inside and a connection hole at the bottom. The drive motor of the stirring rod (a three-phase asynchronous motor connected to the microprocessor signal) is fixed to the bottom of the tank with bolts. The rotating rod (stainless steel with grooves on the surface) is fixed to the output end of the motor and is rotatably connected to the connection hole through a sealed bearing. The stainless steel mixing tank is resistant to corrosion of the ethyl nicotinate reaction system, has a large volume suitable for batch reactions, and has a polished inner wall to reduce material adhesion. The reaction chamber provides a stable reaction space, and the sealed bearing in the connection hole ensures smooth and leak-free rotation of the rotating rod. The drive motor drives the rotating rod to rotate at high speed, providing power for mixing the catalyst and reactants. The microprocessor controls the rotation speed to adapt to different reaction stages and ensure catalytic efficiency.

[0008] Preferably, one end of the placement frame is configured as a fastening ring that engages with the rotating rod, and both ends of the placement frame are provided with sliding grooves to guide the expansion frame.

[0009] The above technical solution is adopted as follows: a fastening ring is provided at one end of the placement frame (made of stainless steel) to engage with the groove of the rotating rod. Sliding grooves are symmetrically opened at both ends of the placement frame to guide the expansion frame. The fastening ring achieves detachable fixation between the placement frame and the rotating rod through locking bolts, which facilitates the replacement of placement frames of different specifications. The sliding grooves provide precise guidance for the expansion frame, restricting the expansion frame to move only in the horizontal direction to avoid deviation. The stainless steel material is resistant to corrosion by reactive media, ensuring long-term stable use.

[0010] Preferably, in any of the above embodiments, the expansion frame includes an electric telescopic rod connected to a microprocessor signal, a movable frame for adjustment, and a closed protective connecting plate. The electric telescopic rod is fixedly installed inside the placement frame. One end of the electric telescopic rod is fixedly installed with a movable frame that moves inside the placement frame. Both ends of the movable frame are rotatably connected to the connecting plate that moves inside the placement frame. The laser rangefinder is fixedly installed at one end of the movable frame near the electric telescopic rod and located inside the placement frame. The placement frame, the movable frame, and the connecting plate all have fine slots and holes for accommodating reactants.

[0011] The above technical solution employs the following: the electric telescopic rod (a miniature electric push rod connected to a microprocessor signal) of the extension frame is fixed inside the placement frame; the movable frame (made of stainless steel) is fixed to the output end of the telescopic rod and can slide along the groove; the connecting plate (made of stainless steel) is rotatably connected to both ends of the movable frame via hinges; and the laser range sensor (laser triangulation method) is fixed to the end of the movable frame near the telescopic rod. Fine slots are provided in the placement frame, movable frame, and connecting plate. The electric telescopic rod drives the movable frame to precisely extend and retract, and in conjunction with the rotation of the connecting plate, the internal cavity size of the placement frame can be adjusted to accommodate different amounts of catalyst. The laser range sensor monitors the position of the movable frame in real time, providing data for size adjustment. The fine slots ensure sufficient contact between the reactants and the catalyst while preventing catalyst leakage. The overall structure enables flexible adjustment of the reaction cavity, improving the applicability of the device.

[0012] Preferably, in any of the above embodiments, the emission control board includes an electric rod for opening and closing connected to a microprocessor signal and an opening and closing plate for closing the placement frame. The electric rod for opening and closing is fixedly installed inside the placement frame, and one end of the electric rod for opening and closing is fixedly installed with an opening and closing plate that moves inside the placement frame.

[0013] The above technical solution is adopted: the electric opening and closing rod (miniature electric push rod, connected to the microprocessor signal) of the emission control panel is fixed inside the placement frame, and the opening and closing plate (stainless steel material, polished surface) is fixed to the output end of the telescopic rod and can slide at the bottom of the placement frame. The electric telescopic rod drives the opening and closing plate to open and close precisely. When closed, it seals the bottom of the placement frame to prevent the catalyst from falling out. When open, it facilitates the addition or replacement of the catalyst, or the discharge of waste catalyst after the reaction is completed. The stainless steel opening and closing plate is corrosion resistant, slides smoothly, and does not affect the rotation of the placement frame.

[0014] Preferably, the bottom of the adding end cap is provided with a connecting slot that engages with the placement frame, and the middle of the adding end cap is provided with a connecting post that is inserted into the top of the rotating rod.

[0015] The above technical solution is adopted: the bottom of the added end cap (made of stainless steel) has a connecting groove that engages with the top of the placement rack, and a connecting post in the middle that is inserted into the insertion hole at the top of the rotating rod. The dual positioning of the connecting groove and the connecting post ensures that the added end cap is precisely aligned with the placement rack and the rotating rod, preventing loosening during rotation. The end cap seals the top of the placement rack to prevent the catalyst from splashing out during stirring. The stainless steel material is corrosion resistant and can be completely closed or partially opened as needed (by replacing end caps with different opening ratios) to adapt to different reaction conditions.

[0016] Preferably, in any of the above embodiments, the locking block includes a locking spring for support, a fastening block for clamping and fixing, a high-strength fastening rope for pulling adjustment, and an adjusting screw for rotating fastening. The locking spring is fixedly installed inside the connecting column of the adding end cap. One end of the locking spring is fixedly installed with a fastening block that moves inside the connecting column. One end of the fastening block is fixedly installed with a high-strength fastening rope that passes through the locking spring and the connecting column. One end of the high-strength fastening rope is fixedly installed with an adjusting screw that is threadedly connected to the inside of the adding end cap.

[0017] The above technical solution is adopted as follows: the locking spring of the locking block is fixed inside the connecting column of the adding end cap, the fastening block is fixed to one end of the spring and can slide inside the connecting column, one end of the high-strength fastening rope (stainless steel wire rope) is fixed to the fastening block, passes through the spring and the connecting column, the adjusting screw (stainless steel material) is threaded into the inside of the adding end cap, and one end is fixed to the fastening rope. The locking spring provides a continuous clamping force, driving the fastening block to engage with the slot of the rotating rod, realizing the rapid locking of the adding end cap. The adjusting screw controls the extension and retraction of the fastening block by tightening or loosening the fastening rope, realizing the unlocking. The fastening block is wear-resistant and does not damage the rotating rod. The stainless steel rope and screw are corrosion-resistant, ensuring long-term reliable operation.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. An adjustable cavity consisting of a placement rack and an expansion frame is installed inside the catalytic ethyl nicotinate reaction device to hold the catalyst. The position of the expansion frame can be adjusted according to the size and amount of catalyst, thereby adjusting the size of the adjustable cavity. A stirring rod with output power is connected to the placement rack, enabling the stirring rack to drive the placement rack to rotate, which in turn drives the placed catalyst to rotate, allowing the catalyst to fully contact the reactants, improving the efficiency of the catalytic reaction. The size of the cavity can be easily adjusted according to the different catalysts used, improving the convenience of using the reaction device.

[0019] 2. An add-on end cap that can be sealed is installed above the placement rack. The add-on end cap is fixed with a locking block so that the add-on end cap completely or partially covers the placed catalyst, reducing the possibility of catalyst splashing out during stirring and improving the stability of catalyst use.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1This is a structural schematic diagram according to an embodiment of the present utility model. Figure 2 This is a partial structural diagram according to an embodiment of the present utility model. Figure 3 This is a schematic diagram of the fracture structure of the expansion frame according to an embodiment of the present invention. Figure 4 This is a side sectional view of the mixing tank according to an embodiment of the present invention; Figure 5 This is a cross-sectional structural diagram of the placement rack according to an embodiment of the present utility model; Figure 6 According to the embodiments of this utility model Figure 5 Enlarged structural diagram at point A; Figure 7 According to the embodiments of this utility model Figure 5 Enlarged structural diagram at point B. The components are: 1-mixing box, 2-mixing rod, 21-drive motor, 22-rotating rod, 3-placement rack, 4-extension frame, 41-electric telescopic rod, 42-movable frame, 43-connecting plate, 5-laser rangefinder sensor, 6-emission control plate, 61-opening and closing electric rod, 62-opening and closing plate, 7-adding end cap, 8-locking block, 81-locking spring, 82-fastening block, 83-high-strength fastening rope, 84-adjusting screw. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0023] like Figure 1-7 As shown in the figure, a green catalytic ethyl nicotinate reaction device according to an embodiment of the present invention includes a stirring tank 1 for stirring, a stirring rod 2 for outputting power fixedly installed inside the stirring tank 1, a storage rack 3 for storing catalyst fixedly installed inside the stirring rod 2, an extension frame 4 for telescopic adjustment fixedly installed inside the storage rack 3, a laser rangefinder 5 for detecting the position of the extension frame 4 fixedly installed inside the extension frame 4, a microprocessor for signal processing and automatic control of the laser rangefinder 5, an emission control board 6 for opening and closing the storage rack 3, an addition end cap 7 for sealing the top of the storage rack 3, and a locking block 8 for locking and positioning the addition end cap 7 fixedly installed inside the addition end cap 7.

[0024] Preferably, in any of the above embodiments, the mixing tank 1 has a reaction chamber for reaction, and the bottom of the reaction chamber has a connection hole for fixing the stirring rod 2. The stirring rod 2 includes a drive motor 21 connected to the microprocessor signal and a rotating rod 22 for transmitting power. The drive motor 21 is fixedly installed at the bottom of the mixing tank 1 by bolts, and the output end of the drive motor 21 is fixedly installed with the rotating rod 22 rotatably connected to the inside of the mixing tank 1.

[0025] The above technical solution is adopted as follows: The mixing tank 1 (stainless steel welded) has a reaction chamber inside and a connection hole at the bottom. The drive motor 21 (three-phase asynchronous motor, connected to the microprocessor signal) of the stirring rod 2 is fixed to the bottom of the tank with bolts. The rotating rod 22 (stainless steel material, with a groove on the surface) is fixed to the output end of the motor and is rotatably connected to the connection hole through a sealed bearing. The stainless steel mixing tank is resistant to corrosion of the ethyl nicotinate reaction system, has a large volume suitable for batch reactions, and the polished inner wall reduces material adhesion. The reaction chamber provides a stable reaction space, and the sealed bearing in the connection hole ensures smooth rotation of the rotating rod without leakage. The drive motor drives the rotating rod to rotate at high speed, providing power for mixing the catalyst and reactants. The microprocessor controls the rotation speed to adapt to different reaction stages and ensure catalytic efficiency.

[0026] Based on the principle of corrosion resistance design, stainless steel blocks corrosive media through a chromium-nickel alloy passivation film. The sealed bearing is based on the principle of rolling friction to reduce rotational resistance. The mixing principle of the stirring rod is based on fluid mechanics. The rotating rod drives the catalyst and reactants to form turbulence, increasing the contact area. The microprocessor is based on the principle of time-series control to adjust the rotation speed according to the reaction progress and optimize the reaction conditions. Ethyl nicotinate reactant is injected into the reaction chamber of the stirring tank 1. The microprocessor sets the initial speed of the drive motor 21 and starts the rotating rod 22. After the catalyst is added, the speed is adjusted to enhance mixing. After the reaction is completed, the motor is stopped and the product is discharged. During cleaning, clean water is injected and the stirring rod is started to clean the inner wall. The wear and corrosion of the rotating rod are checked regularly, and the stability of the motor speed and the leakage of the sealed bearing are tested regularly.

[0027] Preferably, one end of the placement frame 3 is configured as a fastening ring that engages with the rotating rod 22, and both ends of the placement frame 3 are provided with sliding grooves to guide the expansion frame 4.

[0028] The above technical solution is adopted: a fastening ring is provided at one end of the placement frame 3 (made of stainless steel) to engage with the slot of the rotating rod 22. Slide grooves are symmetrically opened at both ends of the placement frame to guide the expansion frame 4. The fastening ring achieves detachable fixation between the placement frame and the rotating rod through locking bolts, which facilitates the replacement of placement frames of different specifications. The slide grooves provide precise guidance for the expansion frame, restricting the expansion frame to move only in the horizontal direction to avoid deviation. The stainless steel material is resistant to corrosion by reactive media, ensuring long-term stable use.

[0029] Based on the snap-fit ​​principle, the opening design of the fastening ring facilitates quick installation, and the pre-tightening force of the locking bolt ensures a firm connection. The guiding principle of the slide is based on linear constraints, which restricts unnecessary degrees of freedom through the cooperation between the slide wall and the expansion frame. The detachable design is based on the modular concept, which improves the applicability of the device. During installation, the fastening ring of the placement rack 3 is snapped into the slot of the rotating rod 22, and the locking bolt is tightened to fix it. According to the amount of catalyst, the internal cavity size of the placement rack is adjusted through the expansion frame 4. After the reaction is completed, the bolts can be loosened to remove the placement rack for cleaning or replacement. The slide should be cleaned regularly (without material residue), and the wear of the fastening ring and the tightening torque of the locking bolt should be checked regularly.

[0030] Preferably, in any of the above embodiments, the expansion frame 4 includes an electric telescopic rod 41 connected to a microprocessor signal, a movable frame 42 for adjustment, and a closed protective connecting plate 43. The electric telescopic rod 41 is fixedly installed inside the placement frame 3. One end of the electric telescopic rod 41 is fixedly installed with the movable frame 42 that moves inside the placement frame 3. The two ends of the movable frame 42 are rotatably connected to the connecting plate 43 that moves inside the placement frame 3. The laser rangefinder 5 is fixedly installed at one end of the movable frame 42 near the electric telescopic rod 41 and located inside the placement frame 3. The placement frame 3, the movable frame 42, and the connecting plate 43 all have fine slots for accommodating reactants.

[0031] The above technical solution is adopted as follows: the electric telescopic rod 41 (a miniature electric push rod, connected to the microprocessor signal) of the extension frame 4 is fixed inside the placement frame 3, the movable frame 42 (made of stainless steel) is fixed to the output end of the telescopic rod and can slide along the slide groove, the connecting plate 43 (made of stainless steel) is connected to both ends of the movable frame by hinges, and the laser range sensor 5 (laser triangulation method) is fixed to the end of the movable frame near the telescopic rod. The placement frame, the movable frame and the connecting plate are all provided with fine slots. The electric telescopic rod drives the movable frame to extend and retract precisely. With the rotation of the connecting plate, the internal cavity size of the placement frame can be adjusted to accommodate different amounts of catalyst. The laser range sensor monitors the position of the movable frame in real time and provides data for size adjustment. The fine slots ensure that the reactants and catalysts are in full contact and prevent catalyst leakage. The overall structure realizes flexible adjustment of the reaction cavity and improves the applicability of the device.

[0032] Based on the principle of telescopic adjustment, the linear motion of the electric telescopic rod drives the movable frame to move. The connecting plate rotates with the movable frame to expand or contract the cavity. Laser ranging is based on the principle of optical ranging. The sensor emits a laser to the inner wall of the placement rack to calculate the position of the movable frame. The design of the fine slots is based on the principle of mass transfer, which ensures the flow of reactants while trapping the catalyst. Detailed operation: The microprocessor calculates the required cavity size based on the amount of catalyst and controls the electric telescopic rod 41 to extend, driving the movable frame 42 to move along the slide. The laser ranging sensor 5 provides real-time feedback of position data. It stops after reaching the target position. The connecting plate 43 rotates with the movable frame to seal the side of the cavity. During the reaction, the reactants come into contact with the catalyst through the fine slots. The slots are cleaned regularly (to prevent blockage). The positioning accuracy of the electric telescopic rod and the calibration of the laser ranging sensor are tested regularly. The microprocessor sets the cavity size threshold and controls the electric telescopic rod 41 in a closed loop through the detection data of the laser ranging sensor 5.

[0033] Preferably, in any of the above embodiments, the emission control panel 6 includes an electric lever 61 connected to a microprocessor signal and an opening / closing plate 62 that closes the placement rack 3. The electric lever 61 is fixedly installed inside the placement rack 3, and one end of the electric lever 61 is fixedly installed with the opening / closing plate 62 that moves inside the placement rack 3.

[0034] The above technical solution is adopted: the electric opening and closing rod 61 (mini electric push rod, connected to the microprocessor signal) of the emission control plate 6 is fixed inside the placement frame 3, and the opening and closing plate 62 (stainless steel material, polished surface) is fixed to the output end of the telescopic rod and can slide at the bottom of the placement frame. The electric telescopic rod drives the opening and closing plate to open and close precisely. When closed, it seals the bottom of the placement frame to prevent the catalyst from falling. When opened, it facilitates the addition or replacement of the catalyst, or the discharge of waste catalyst after the reaction is completed. The stainless steel opening and closing plate is corrosion resistant, slides smoothly, and does not affect the rotation of the placement frame.

[0035] Based on the principle of sealing and opening, the opening and closing plate achieves sealing by tightly fitting with the bottom of the placement rack. The driving principle of the electric push rod is based on the screw drive, which converts the rotational motion of the motor into linear sliding. The microprocessor controls the state of the opening and closing plate according to the reaction process (such as opening during the feeding stage and closing during the reaction stage). When the catalyst is added, the microprocessor controls the electric rod 61 to retract, which drives the opening and closing plate 62 to open the bottom of the placement rack 3. After the catalyst is added, the electric rod extends, and the opening and closing plate closes and seals. After the reaction is completed, the opening and closing plate opens again to discharge the waste catalyst. During cleaning, the opening and closing plate remains open for easy rinsing. The opening and closing plate is cleaned regularly (to remove catalyst residue), and the positioning accuracy of the electric telescopic rod and the sealing performance of the opening and closing plate are tested regularly.

[0036] Preferably, the bottom of the added end cap 7 is provided with a connecting slot that engages with the placement frame 3, and the middle of the added end cap 7 is provided with a connecting post that is inserted into the top of the rotating rod 22.

[0037] The above technical solution is adopted: the bottom of the added end cap 7 (made of stainless steel) has a connecting groove that engages with the top of the placement rack 3, and a connecting post in the middle that is inserted into the insertion hole at the top of the rotating rod 22. The dual positioning of the connecting groove and the connecting post ensures that the added end cap is precisely connected to the placement rack and the rotating rod, preventing loosening during rotation. The end cap seals the top of the placement rack to prevent the catalyst from splashing out during stirring. The stainless steel material is corrosion resistant and can be completely closed or partially opened according to requirements (by replacing end caps with different opening ratios) to adapt to different reaction conditions.

[0038] Based on the dual positioning principle, the connecting slot restricts the horizontal displacement of the end cap, and the connecting column restricts the vertical and circumferential displacement to ensure accurate positioning. The closed protection principle is based on physical shielding to avoid catalyst splashing. The modular design principle allows for the replacement of different end caps, improving the flexibility of the device. During installation, the connecting column with the added end cap 7 is inserted into the top hole of the rotating rod 22, the connecting slot engages with the top of the placement frame 3, and is locked and fixed by the locking block 8. The end cap remains closed during the reaction. If catalyst needs to be added, the end cap is removed after unlocking. After the reaction is completed, the end cap is removed for cleaning. The connecting slot and connecting column are cleaned regularly (to remove any material residue), and the end cap wear and docking accuracy are checked regularly.

[0039] Preferably, in any of the above embodiments, the locking block 8 includes a locking spring 81 for support, a fastening block 82 for clamping and fixing, a high-strength fastening rope 83 for pulling adjustment, and an adjusting screw 84 for rotating fastening. The locking spring 81 is fixedly installed inside the connecting column of the adding end cover 7. One end of the locking spring 81 is fixedly installed with the fastening block 82 that moves inside the connecting column. One end of the fastening block 82 is fixedly installed with the high-strength fastening rope 83 that passes through the locking spring 81 and the connecting column. One end of the high-strength fastening rope 83 is fixedly installed with the adjusting screw 84 that is threadedly connected to the inside of the adding end cover 7.

[0040] The above technical solution is adopted as follows: the locking spring 81 of the locking block 8 is fixed inside the connecting column of the adding end cover 7, the fastening block 82 is fixed to one end of the spring and can slide inside the connecting column, one end of the high-strength fastening rope 83 (stainless steel wire rope) is fixed to the fastening block, passes through the spring and the connecting column, the adjusting screw 84 (stainless steel material) is threaded to the inside of the adding end cover, and one end is fixed to the fastening rope. The locking spring provides a continuous clamping force, driving the fastening block to engage with the slot of the rotating rod 22, thereby realizing the rapid locking of the adding end cover. The adjusting screw controls the extension and retraction of the fastening block by tightening or loosening the fastening rope, thereby realizing the unlocking. The fastening block is wear-resistant and does not damage the rotating rod. The stainless steel rope and screw are corrosion-resistant, ensuring long-term reliable operation.

[0041] Based on the principle of elastic engagement, the natural state of the locking spring pushes the fastening block out, forming a mechanical lock with the slot. The unlocking principle of the adjusting screw is based on thread transmission. Rotating the screw tightens the fastening rope, overcoming the spring force and pulling the fastening block back. The principle of adjusting the clamping force is based on spring deformation. The screw controls the spring compression and adjusts the clamping force. When locking, the fastening block 82 pops out under the action of the locking spring 81 and engages with the slot of the rotating rod 22. When unlocking, rotating the adjusting screw 84 tightens the high-strength fastening rope 83, pulling the fastening block back and disengaging it from the slot. When the clamping force needs to be adjusted, rotating the screw changes the spring compression. The inside of the locking block should be cleaned regularly (to prevent dust from getting stuck), and the elasticity of the locking spring and the tensile strength of the fastening rope should be tested regularly.

[0042] The working principle of this green catalytic ethyl nicotinate reaction device is as follows: First, the placement rack 3 is engaged with the rotating rod 22 slot of the stirring rod 2 using a fastening ring at one end, and the bolts are tightened to fix it. According to the amount of catalyst, the microprocessor controls the electric telescopic rod 41 of the expansion frame 4 to push the movable frame 42 to slide along the placement rack slide. The laser range sensor 5 detects the position of the movable frame in real time and adjusts it to fit the cavity size. The connecting plate 43 rotates with the movable frame to close the side of the cavity, forming a stable catalyst placement space. Then, the adjusting screw 84 of the adding end cap 7 is rotated, and the fastening block 82 is pulled by the high-strength fastening rope 83 to compress the locking spring 81. The end cap connecting post is inserted into the top of the rotating rod, the screw is released, and the spring pushes the block into place. After the tank is locked, the connecting slot and the top of the placement rack are locked and sealed. The microprocessor controls the opening and closing electric rod 61 of the emission control board 6 to retract. After the catalyst is added, the opening and closing plate is closed, and the raw material is injected into the reaction chamber of the mixing tank 1. The drive motor 21 of the stirring rod 2 is started, which drives the rotating rod and the placement rack to rotate synchronously. The catalyst is fully in contact with the raw material through the fine grooves. During the reaction, the microprocessor adjusts the motor speed according to the progress. After the reaction is completed, the stirring is stopped, the opening and closing plate is opened to discharge the waste catalyst, the end cap and the placement rack are unlocked, and after cleaning, it is ready for the next use. All the structures work together to realize the whole process of green catalytic reaction of "chamber adjustment - catalyst placement - reaction stirring - cleaning and reset".

[0043] Compared with the prior art, the present invention has the following advantages: 1. An adjustable cavity, consisting of a placement rack 3 and an expansion frame 4, is provided inside the catalytic ethyl nicotinate reaction device for placing the catalyst. The position of the expansion frame 4 can be adjusted according to the size and amount of the catalyst, thereby adjusting the size of the adjustable cavity. A stirring rod 2 with output power is connected to the placement rack 3, allowing the stirring rack 2 to drive the placement rack 3 to rotate, which in turn drives the placed catalyst to rotate, ensuring that the catalyst and reactants can fully contact each other, improving the efficiency of the catalytic reaction. This also facilitates the adjustment of the cavity size according to the different catalysts used, improving the ease of use of the reaction device.

[0044] 2. An adder end cap 7 that can be sealed is installed above the placement rack 3. The adder end cap 7 is fixed by the locking block 8 so that the adder end cap 7 completely or partially covers the placed catalyst, reducing the possibility of the catalyst splashing out during stirring and improving the stability of the catalyst.

Claims

1. A green catalytic ethyl nicotinate reaction device, comprising a stirring tank (1) for stirring, wherein a stirring rod (2) for outputting power is fixedly installed inside the stirring tank (1), characterized in that: The stirring rod (2) has a catalyst storage rack (3) fixedly installed inside. The rack (3) has an extension frame (4) for telescopic adjustment fixedly installed inside. The extension frame (4) has a laser rangefinder (5) for detecting its position fixedly installed inside. The laser rangefinder (5) is connected to a microprocessor for signal processing and automatic control. The microprocessor is connected to an emission control board (6) for opening and closing the rack (3). The top of the rack (3) is locked with an addition end cap (7) for sealing it. The addition end cap (7) has a locking block (8) for locking and positioning it fixedly installed inside.

2. The green catalytic ethyl nicotinate reaction device as described in claim 1, characterized in that: The mixing tank (1) has a reaction chamber for reaction inside. The bottom of the reaction chamber has a connection hole for fixing the stirring rod (2). The stirring rod (2) includes a drive motor (21) connected to the microprocessor signal and a rotating rod (22) for transmitting power. The drive motor (21) is fixedly installed at the bottom of the mixing tank (1) by bolts. The output end of the drive motor (21) is fixedly installed with a rotating rod (22) that is rotatably connected inside the mixing tank (1).

3. The green catalytic ethyl nicotinate reaction device as described in claim 2, characterized in that: One end of the placement frame (3) is configured as a fastening ring that engages with the rotating rod (22), and both ends of the placement frame (3) are provided with sliding grooves to guide the expansion frame (4).

4. The green catalytic ethyl nicotinate reaction device as described in claim 3, characterized in that: The expansion frame (4) includes an electric telescopic rod (41) connected to a microprocessor signal, an adjustable movable frame (42), and a protective connecting plate (43). The electric telescopic rod (41) is fixedly installed inside the placement frame (3). One end of the electric telescopic rod (41) is fixedly installed with the movable frame (42) that moves inside the placement frame (3). Both ends of the movable frame (42) are rotatably connected to the connecting plate (43) that moves inside the placement frame (3). The laser range sensor (5) is fixedly installed at one end of the movable frame (42) near the electric telescopic rod (41) and located inside the placement frame (3). The placement frame (3), the movable frame (42), and the connecting plate (43) are all provided with fine slots for accommodating reactants.

5. The green catalytic ethyl nicotinate reaction apparatus as described in claim 4, characterized in that: The emission control panel (6) includes an electric lever (61) connected to a microprocessor signal and an opening and closing plate (62) that closes the placement rack (3). The electric lever (61) is fixedly installed inside the placement rack (3), and one end of the electric lever (61) is fixedly installed with the opening and closing plate (62) that moves inside the placement rack (3).

6. The green catalytic ethyl nicotinate reaction apparatus as described in claim 5, characterized in that: The bottom of the added end cap (7) is provided with a connecting slot that engages with the placement frame (3), and the middle part of the added end cap (7) is provided with a connecting post that is inserted into the top of the rotating rod (22).

7. The green catalytic ethyl nicotinate reaction apparatus as described in claim 6, characterized in that: The locking block (8) includes a locking spring (81) for support, a fastening block (82) for clamping and fixing, a high-strength fastening rope (83) for pulling and adjusting, and an adjusting screw (84) for rotating and fastening. The locking spring (81) is fixedly installed inside the connecting column of the adding end cap (7). One end of the locking spring (81) is fixedly installed with the fastening block (82) that moves inside the connecting column. One end of the fastening block (82) is fixedly installed with the high-strength fastening rope (83) that passes through the locking spring (81) and the connecting column. One end of the high-strength fastening rope (83) is fixedly installed with the adjusting screw (84) that is threaded into the inside of the adding end cap (7).

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