A high-efficiency pilot reaction device

Abstract

The utility model discloses a kind of high-efficiency pilot reaction equipment, including frame body, reaction kettle, exhaust pipe, condenser, air release valve, drain pipe, movable pipe, liquid collecting pan and corresponding transmission and limiting mechanism. Reaction kettle is made of high boron glass, with good transparency and corrosion resistance, facilitate observation experimental process, top exhaust pipe is connected two condensers of oblique arrangement through bellow, realize efficient condensation and release excess pressure through air release valve, improve operating safety. The drain pipe of reaction kettle bottom is connected with movable pipe, movable pipe bottom is provided with leak hole, when draining, into the inside of liquid collecting pan, waste liquid is discharged by dispersion, reduce impact force and splashing phenomenon. The lifting of movable pipe is realized through rotating shaft, swing plate and limiting structure, operator can be adjusted by external control lever, avoid direct contact with chemical waste liquid, improve operating safety.

Description

Technical Field

[0001] This utility model belongs to the field of pilot-scale experimental technology, specifically relating to a high-efficiency pilot-scale reaction device. Background Technology

[0002] In chemical engineering research and development, pilot-scale reaction equipment serves as a crucial link between laboratory-scale research and industrial production, undertaking the key tasks of process verification and scale-up experiments. Existing pilot-scale reaction devices typically consist of a reaction vessel, condenser, exhaust system, and collection system, which can meet the needs of reaction experiments to a certain extent. However, existing devices still have some shortcomings in practical use.

[0003] First, traditional reactors are mostly made of metal or ordinary glass, which lack transparency or have poor pressure resistance, making it difficult to simultaneously ensure both direct observation of experimental phenomena and safe operation of the equipment, and easily leading to uncontrollable risks during the reaction process. Second, in the process of removing and condensing the gas generated in the reaction, the condenser layout of conventional devices is relatively large, which not only occupies space but also has limited condensation efficiency, making it difficult to meet the dual requirements of equipment safety and stability and condensation effect in compact pilot-scale experimental settings.

[0004] Furthermore, in the waste liquid discharge stage after the reaction, existing devices generally discharge the waste liquid directly into the collection tray through a pipe at the bottom of the reactor. Due to the large volume of solution inside the reactor and the rapid discharge rate, the waste liquid often generates a significant impact when falling into the collection tray, leading to liquid splashing, which causes environmental pollution and increases the protective burden on operators. Although some devices have added protective structures around the collection tray, it is difficult to mitigate the liquid impact force at the source, and the effect is limited.

[0005] Finally, the adjustment and installation of waste liquid diversion pipes generally rely on direct manual contact, posing certain safety hazards. When operators need to adjust or fix the drainage components, they may accidentally come into contact with residual liquid, resulting in a risk of chemical exposure, which reduces the overall safety and convenience of using the equipment. Utility Model Content

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide a high-efficiency pilot-scale reaction device that can improve experimental safety and protection performance.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A high-efficiency pilot-scale reaction device includes a frame, a reaction vessel is installed at the center of the inner side of the frame, the reaction vessel is hollow, a stirring rod is installed inside the reaction vessel, and an exhaust pipe is connected to the top of the reaction vessel;

[0009] The bottom of the reactor is provided with a drain pipe, and a support plate is fixed to the lower side of the inner side of the frame. The support plate is placed directly below the reactor. A sliding groove is opened on the surface of the support plate, and a liquid collection tray is slidably installed on the inner side of the support plate.

[0010] A movable tube is slidably installed below the surface of the drain pipe. The movable tube has evenly distributed leakage holes below its surface. During drainage, the bottom of the movable tube slides into the inside of the collection tray to reduce splashing.

[0011] Furthermore, a condenser is provided at the top of the exhaust pipe, and the condenser and the exhaust pipe are connected by a corrugated pipe. There are two condensers, and the condensers are inclined to reduce the overall height.

[0012] A vent valve is also installed at the end of the condenser.

[0013] Furthermore, a valve is installed inside the drain pipe, and convex strips are symmetrically arranged on the outer surface of the drain pipe. Grooves are symmetrically opened on the inner side of the movable pipe, and the convex strips slide inside the grooves.

[0014] Furthermore, fixing bolts are symmetrically arranged above the outer surface of the movable tube, and a rotating shaft is rotatably installed inside the frame. The rotating shaft is located on one side above the bearing plate, and a swing plate is provided on one side of the rotating shaft.

[0015] Furthermore, a U-shaped groove is formed on the surface of the swing plate, the movable tube passes through the U-shaped groove, and both fixing bolts are placed above the swing plate.

[0016] Furthermore, the rotating shaft passes through the front surface of the frame, and a swing rod is provided at the front end of the rotating shaft. The swing rod is parallel to the swing plate, and a front baffle is provided at the end of the swing rod. The front baffle is placed in front of the liquid collection tray to block and limit the liquid collection tray during drainage.

[0017] Furthermore, a control lever is provided on the outer side of the front baffle, a fixed cylinder is provided at the front end of the rotating shaft, a positioning bolt is slidably installed on the inner side of the fixed cylinder, a pull rod is provided on the outer side of the positioning bolt, the pull rod passes through the fixed cylinder, a spring is sleeved on the surface of the pull rod, the spring is placed inside the fixed cylinder, and the spring applies an inward pushing force to the positioning bolt.

[0018] The frame surface has positioning holes that are compatible with positioning bolts. When the positioning bolts are engaged with the positioning holes, the upward tilt angle of the rotating shaft is fixed.

[0019] Furthermore, the front side of the chute is open, and a handle is fixed to the front side of the liquid collection tray.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This invention, by employing a high borosilicate glass material structure in the reaction vessel, not only ensures good transparency, facilitating real-time observation of the reaction process by experimental personnel, but also improves chemical corrosion resistance and temperature resistance, thereby overcoming the defects of insufficient transparency or poor pressure resistance in existing technologies, and effectively ensuring the safety and controllability of the pilot-scale reaction stage.

[0022] This invention features two inclined condensers at the top of the exhaust pipe, which are connected to the exhaust pipe via corrugated pipes. This allows the equipment to achieve efficient condensation while occupying a small space. At the same time, a vent valve is added to the end of the condenser to release excess gas pressure in a timely manner during the reaction process, thereby avoiding the risk of the reactor rupture due to excessive positive pressure. This effectively improves the safety of the reaction process and the condensation efficiency.

[0023] This invention incorporates a movable tube on the outside of the drain pipe during the liquid discharge process. The bottom of the movable tube has evenly distributed perforations, allowing the waste liquid to flow out in a dispersed manner during discharge. This reduces the impact force of the waste liquid and avoids the liquid splashing problem caused by direct discharge of waste liquid into the collection tray in the prior art, thus ensuring environmental cleanliness and laboratory safety during the waste liquid discharge process.

[0024] This invention achieves controllable lifting and lowering of the movable tube by setting a rotating shaft, a swing plate, and a limiting structure between the movable tube and the frame. Experimenters can operate it indirectly through a control lever, avoiding the chemical hazards caused by direct contact with the drainage components. At the same time, during drainage, the swing lever, in conjunction with the front baffle, limits the liquid collection tray to prevent displacement of the tray and overflow. This effectively solves the shortcomings of existing equipment in terms of operational safety and convenience. Attached Figure Description

[0025] Figure 1 This is a front view structural diagram of the present utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of the reaction vessel and liquid collection plate of this utility model;

[0028] Figure 4 This is a schematic diagram of the liquid collection tray in the pulled-out state of this utility model;

[0029] Figure 5 This is a schematic diagram of the liquid collection tray in the installation state of this utility model;

[0030] Figure 6 This is a schematic diagram of the installation structure of the drain pipe and movable pipe of this utility model;

[0031] Figure 7 This is a three-dimensional structural diagram of the movable tube and rotating shaft of this utility model.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Frame; 11. Bearing plate; 111. Slide groove; 2. Reactor; 21. Drain pipe; 22. Valve; 23. Raised strip; 3. Exhaust pipe; 31. Bellows; 32. Condenser; 33. Vent valve; 4. Collection tray; 41. Handle; 5. Movable pipe; 51. Fixing bolt; 52. Leakage hole; 53. Groove; 6. Shaft; 61. Swing plate; 62. U-shaped groove; 63. Swing rod; 64. Front baffle; 65. Control lever; 66. Fixing cylinder; 67. Positioning bolt; 68. Pull rod; 69. Spring. Detailed Implementation

[0034] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0035] Example 1:

[0036] like Figures 1-7 As shown, a high-efficiency pilot-scale reaction apparatus includes a frame 1, with a reaction vessel 2 installed at the center of the inner side of the frame 1. The reaction vessel 2 is hollow inside, and a stirring rod is installed inside the reaction vessel 2. An exhaust pipe 3 is connected to the top of the reaction vessel 2. The reaction vessel 2 is made of high borosilicate glass, which has good transparency and chemical corrosion resistance, allowing experimenters to directly observe the physical and chemical phenomena during the reaction process, so as to adjust and improve the process conditions in real time. The stirring rod is used to promote the thorough mixing of the original liquid inside the reaction vessel 2, thereby improving the reaction efficiency. The exhaust pipe 3 ensures that the gas generated by the reaction can be smoothly discharged, thereby avoiding excessive gas pressure inside the reaction vessel 2 that could damage the glass material and improving experimental safety.

[0037] The bottom of the reactor 2 is equipped with a drain pipe 21, and a support plate 11 is fixed to the lower inner side of the frame 1. The support plate 11 is placed directly below the reactor 2, and a sliding groove 111 is formed on the surface of the support plate 11. A collection tray 4 is slidably installed on the inner side of the support plate 11. The drain pipe 21 is used to discharge the waste liquid after the reaction in a timely manner, and the collection tray 4 is responsible for collecting the waste liquid. The sliding groove 111 of the support plate 11 ensures that the collection tray 4 can slide smoothly during installation and removal, avoiding the spillage of waste liquid due to unstable operation. The bottom of the collection tray 4 has a strong load-bearing capacity and can effectively collect the liquid discharged from the reactor 2, avoiding solution leakage and contamination of the experimental environment.

[0038] A movable tube 5 is slidably installed below the surface of the drain pipe 21. The movable tube 5 has evenly spaced perforations 52 below its surface. During drainage, the bottom of the movable tube 5 slides into the inner side of the collection tray 4 to reduce splashing. The perforations 52 allow the waste liquid to be slowly dispersed during the drainage process, thereby significantly reducing the liquid impact force and solving the waste liquid splashing problem mentioned in the background art. The downward movement of the movable tube 5 forms a relatively closed drainage space with the inside of the collection tray 4, further improving the safety during the drainage process.

[0039] like Figure 1 and Figure 2 As shown, a condenser 32 is installed at the top of the exhaust pipe 3. The condenser 32 and the exhaust pipe 3 are connected by a corrugated pipe 31. There are two condensers 32, which are inclined to reduce the overall height. The dual condensation structure of the condenser 32 can achieve high condensation efficiency in a limited space. The inclined installation not only reduces the overall height of the equipment, making it easier to arrange in a pilot-scale experimental site, but also enhances the condensation effect of gas flow. The corrugated pipe 31 has good flexibility and sealing performance, which can buffer the installation deviation between the exhaust pipe 3 and the condenser 32 and ensure the stability of gas transmission. A vent valve 33 is also installed at the end of the condenser 32 to release the internal pressure in time during the reaction process, avoid the risk of rupture of the reaction vessel 2 due to excessive gas pressure, and effectively improve the safety of experimental operation.

[0040] like Figures 4-6 As shown, a valve 22 is installed inside the drain pipe 21, and symmetrical protrusions 23 are arranged on the outer surface of the drain pipe 21. Grooves 53 are symmetrically opened on the inner side of the movable pipe 5, and the protrusions 23 slide inside the grooves 53. The valve 22 can control the opening and closing of the draining process, ensuring the controllability of the draining operation and avoiding the impact caused by the waste liquid being discharged too quickly. The cooperation between the protrusions 23 and the grooves 53 ensures that the movable pipe 5 can only slide in the vertical direction, avoiding lateral swaying, thereby ensuring stable waste liquid flow and reducing waste liquid splashing caused by deviation.

[0041] like Figures 4-7 As shown, fixing bolts 51 are symmetrically arranged above the outer surface of the movable tube 5, and a rotating shaft 6 is rotatably installed on the inner side of the frame 1. The rotating shaft 6 is located on one side above the bearing plate 11, and a swing plate 61 is arranged on one side of the rotating shaft 6. The fixing bolts 51 and the swing plate 61 form a reliable limiting and guiding structure, so that the movable tube 5 can move up and down according to a predetermined trajectory. The rotation of the rotating shaft 6 can drive the swing plate 61 to tilt up or down, thereby realizing the height control of the movable tube 5 and ensuring the stability of the operation process.

[0042] like Figures 4-7As shown, the surface of the swing plate 61 is provided with a U-shaped groove 62, the movable tube 5 passes through the U-shaped groove 62, and the two fixing bolts 51 are both placed above the swing plate 61; the cooperation between the U-shaped groove 62 and the fixing bolts 51 can ensure that the movable tube 5 remains stable when moving up and down, and avoid liquid leakage caused by shaking; the design of the swing plate 61 allows the movable tube 5 to move smoothly with the rotating shaft 6, realizing the flexibility of height adjustment.

[0043] like Figures 4-7 As shown, the rotating shaft 6 passes through the front surface of the frame 1. A swing rod 63 is provided at the front end of the rotating shaft 6. The swing rod 63 is parallel to the swing plate 61. A front baffle 64 is provided at the end of the swing rod 63. The front baffle 64 is placed in front of the collection tray 4 to block and limit the collection tray 4 during drainage. The rotation linkage structure of the swing rod 63 ensures that the front baffle 64 can automatically swing down during drainage, forming front protection for the collection tray 4, avoiding waste liquid leakage due to displacement of the collection tray 4, and improving the safety and stability of the equipment operation process.

[0044] like Figure 7 As shown, a control lever 65 is provided on the outer side of the front baffle 64, a fixed cylinder 66 is provided at the front end of the rotating shaft 6, a positioning bolt 67 is slidably installed on the inner side of the fixed cylinder 66, a pull rod 68 is provided on the outer side of the positioning bolt 67, the pull rod 68 passes through the fixed cylinder 66, a spring 69 is sleeved on the surface of the pull rod 68, the spring 69 is placed inside the fixed cylinder 66, and the spring 69 applies an inward pushing force to the positioning bolt 67; a positioning hole adapted to the positioning bolt 67 is opened on the surface of the frame 1, and the positioning bolt 67 fixes the upward tilt angle of the rotating shaft 6 when it is engaged with the positioning hole; through the continuous pushing force of the spring 69 on the positioning bolt 67, it can be ensured that the positioning bolt 67 always maintains a tight fit with the positioning hole during operation, thereby achieving reliable positioning of the rotating shaft 6, avoiding the accidental slippage of the movable tube 5 due to loosening of the rotating shaft 6 by external force, and further improving the safety of the drainage operation.

[0045] like Figure 4 and Figure 5 As shown, the front of the chute 111 is open, and a handle 41 is fixed to the front of the collection tray 4. The handle 41 makes it easy for operators to grab the collection tray 4 when installing or removing it, thereby avoiding direct contact with the waste liquid area and reducing the risk of chemical hazards to the experimental personnel. In combination with the requirements for ease of operation and safety in the background technology, this design significantly improves the ergonomics of the waste liquid treatment process and ensures the safety of the equipment and the cleanliness of the experimental environment.

[0046] Example 2:

[0047] See Figures 1-7In the operation of this high-efficiency pilot-scale reaction apparatus, the frame 1 first supports and secures the overall structure, ensuring the equipment can be stably placed on the experimental workbench. Before the experiment begins, the required chemical stock solution is injected through the inlet of the reaction vessel 2. The reaction vessel 2 is made of high borosilicate glass, possessing excellent chemical corrosion resistance and transparency, allowing researchers to directly observe the liquid state inside the vessel, facilitating monitoring of the reaction process during the pilot-scale stage. A stirring rod is installed inside the reaction vessel 2, which, driven by an external motor, continuously stirs the liquid, ensuring more uniform heating and mixing of the reactants, thereby improving the efficiency and stability of the chemical reaction.

[0048] During the reaction, the exhaust pipe 3 at the top of the reactor 2 is used to discharge the gas produced in the reaction. The gas enters the two condensers 32 located at the top through the flexible corrugated pipe 31. The two condensers 32 are arranged at an angle, which not only reduces the overall height of the equipment, but also facilitates the backflow of condensate, improving condensation efficiency. After being cooled in the condenser 32, the gas is converted into liquid and collected. The gas that is not completely condensed is released in time through the vent valve 33 at the end, thereby avoiding excessive internal pressure and solving the problem of high borosilicate glass reactors being easily damaged by positive pressure in the prior art, thus improving overall safety.

[0049] When the reaction is complete and drainage is required, the valve 22 inside the drain pipe 21 is opened, allowing the waste liquid inside the reactor 2 to flow into the drain pipe 21. At this time, the movable pipe 5, under its own weight, slides down along the guide joint of the groove 53 and the protrusion 23, with its bottom end entering the internal space of the collection tray 4. Multiple drainage holes 52 at the bottom of the movable pipe 5 allow the waste liquid to be dispersed and discharged, reducing the liquid impact force and solving the defect in the prior art where waste liquid directly impacts the collection tray 4, causing splashing and contamination. After entering the collection tray 4, the waste liquid is completely collected, preventing solution overflow.

[0050] During the movement of the movable tube 5, the rotating shaft 6 serves to adjust and limit its height. When it is necessary to raise the height of the movable tube 5 to replace or install the collection tray 4, rotating the rotating shaft 6 causes the swing plate 61 to tilt upwards, and the U-shaped groove 62 drives the fixing bolt 51, thereby raising the movable tube 5 to the upper position as a whole. During this process, the positioning bolt 67, under the thrust of the spring 69, engages with the positioning hole on the frame 1 to reliably fix the position of the rotating shaft 6, keeping the movable tube 5 in an upward state, facilitating safe operation by the operator. Conversely, when drainage is required, the rotating shaft 6 swings downwards, causing the swing plate 61 to descend, and the movable tube 5 moves downwards into the collection tray 4. At the same time, the swing rod 63 swings downwards, causing the front baffle 64 to move in front of the collection tray 4, providing protection and limiting for the collection tray 4, preventing it from shifting under the impact of waste liquid.

[0051] Throughout the operation, the control lever 65 provides a convenient external control method for the experimenters, avoiding direct contact with the waste liquid discharge components and effectively reducing the risk of chemical exposure. A handle 41 is provided on the front of the collection tray 4, allowing the operator to easily remove the collection tray 4 after waste liquid collection and transfer the waste liquid to a designated container for centralized treatment, ensuring a clean and safe experimental environment.

[0052] The working principle of this utility model is as follows:

[0053] The chemical raw material is placed inside the reaction vessel 2 to carry out a chemical reaction. The reaction vessel 2 is made of high borosilicate glass, which facilitates the observation of experimental phenomena and is conducive to subsequent process improvement. The gas generated by the reaction is discharged through the exhaust pipe 3 and then cooled by two condensers 32. The inclined design can reduce the height of this equipment and achieve a better condensation effect while ensuring the safe and stable operation of the equipment. The added vent valve 33 avoids the danger of the high borosilicate glass reaction vessel being unable to withstand positive pressure, and increases the safety of the experiment. The equipment is used to connect the laboratory and the industrial production.

[0054] The drain pipe 21 is used to discharge waste solution. The bottom collection tray 4 can prevent solution leakage and pollution. However, during the discharge process, due to the large amount of solution inside the reactor 2, the solution will impact the collection tray 4 after discharge, resulting in splashing and environmental pollution.

[0055] Therefore, a movable tube 5 is slidably installed below the surface of the drain pipe 21. The cooperation between the protrusion 23 and the groove 53 allows the movable tube 5 to slide only in the vertical direction. When draining, the movable tube 5 slides down to the bottom, so that the bottom of the movable tube 5 is placed inside the collection tray 4. At this time, the valve 22 is opened, and the solution will be discharged through the leakage hole 52 to reduce splashing. The up and down sliding of the movable tube 5 can be controlled by the rotation of the rotating shaft 6. When the swing plate 61 tilts upward, the movable tube 5 can be moved upward through the cooperation of the U-shaped groove 62 and the fixing bolt 51 to increase the height of the movable tube 5, which facilitates the installation of the collection tray 4. When draining, the swing plate 61 tilts downward. As the movable tube 5 slides down due to its own weight, the swing rod 63 on the front side also swings down, causing the front baffle 64 to be placed in front of the collection tray 4 to limit the collection tray 4. The control lever 65 is used for manual control of rotation. Due to the pushing force of the spring 69 on the positioning bolt 67, the positioning bolt 67 is always subjected to a backward pushing force. The surface of the frame 1 is provided with corresponding positioning holes. When the movable tube 5 moves to the top through the rotation of the rotating shaft 6, the positioning bolt 67 can cooperate with the positioning hole to limit the rotating shaft 6, so that the movable tube 5 is kept in the upper position. During the entire operation, the personnel will not have direct contact with the movable tube 5, thereby improving safety.

[0056] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A high-efficiency pilot-scale reaction device, comprising a frame (1), characterized in that: A reaction vessel (2) is installed at the center of the inner side of the frame (1). The reaction vessel (2) is hollow inside. A stirring rod is installed inside the reaction vessel (2). An exhaust pipe (3) is connected to the top of the reaction vessel (2). The bottom of the reactor (2) is provided with a drain pipe (21), and a support plate (11) is fixed on the lower inner side of the frame (1). The support plate (11) is placed directly below the reactor (2). A sliding groove (111) is opened on the surface of the support plate (11), and a liquid collection tray (4) is slidably installed on the inner side of the support plate (11). A movable tube (5) is slidably installed below the surface of the drain pipe (21). The movable tube (5) has evenly distributed leakage holes (52) below its surface. When draining, the bottom of the movable tube (5) slides into the inside of the collection tray (4) to reduce splashing.

2. The high-efficiency pilot-scale reaction equipment according to claim 1, characterized in that: A condenser (32) is provided on the top of the exhaust pipe (3). The condenser (32) and the exhaust pipe (3) are connected by a corrugated pipe (31). There are two condensers (32). The condensers (32) are inclined to reduce the overall height. A vent valve (33) is also installed at the end of the condenser (32).

3. The high-efficiency pilot-scale reaction equipment according to claim 1, characterized in that: A valve (22) is installed inside the drain pipe (21). A convex strip (23) is symmetrically arranged on the outer surface of the drain pipe (21). A groove (53) is symmetrically opened on the inner side of the movable pipe (5). The convex strip (23) slides inside the groove (53).

4. The high-efficiency pilot-scale reaction equipment according to claim 3, characterized in that: Fixing bolts (51) are symmetrically arranged above the outer surface of the movable tube (5). A rotating shaft (6) is rotatably installed on the inner side of the frame (1). The rotating shaft (6) is placed on one side above the bearing plate (11). A swing plate (61) is arranged on one side of the rotating shaft (6).

5. The high-efficiency pilot-scale reaction apparatus according to claim 4, characterized in that: The surface of the swing plate (61) is provided with a U-shaped groove (62), the movable tube (5) passes through the U-shaped groove (62), and the two fixing bolts (51) are placed above the swing plate (61).

6. The high-efficiency pilot-scale reaction apparatus according to claim 4, characterized in that: The rotating shaft (6) passes through the front surface of the frame (1). A swing rod (63) is provided at the front end of the rotating shaft (6). The swing rod (63) is parallel to the swing plate (61). A front baffle (64) is provided at the end of the swing rod (63). The front baffle (64) is placed in front of the liquid collection tray (4) to block and limit the liquid collection tray (4) during drainage.

7. The high-efficiency pilot-scale reaction apparatus according to claim 6, characterized in that: A control lever (65) is provided on the outer side of the front baffle (64), a fixed cylinder (66) is provided at the front end of the rotating shaft (6), a positioning bolt (67) is slidably installed on the inner side of the fixed cylinder (66), a pull rod (68) is provided on the outer side of the positioning bolt (67), the pull rod (68) passes through the fixed cylinder (66), a spring (69) is sleeved on the surface of the pull rod (68), the spring (69) is placed inside the fixed cylinder (66), and the spring (69) applies an inward pushing force to the positioning bolt (67); The frame (1) has a positioning hole on its surface that matches the positioning bolt (67). When the positioning bolt (67) is engaged with the positioning hole, it fixes the upward angle of the rotating shaft (6).

8. The high-efficiency pilot-scale reaction equipment according to claim 1, characterized in that: The front side of the chute (111) is open, and the front side of the liquid collection tray (4) is fixed with a handle (41).

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