Reaction kettle for producing lithocholic acid intermediate

Abstract

The utility model discloses a reaction kettle for producing lithocholic acid intermediates, which comprises a reaction shell, feeding pipes which are transversely and symmetrically distributed are arranged on the top wall of the reaction shell in a penetrating manner, and the reaction kettle further comprises a mixing mechanism, the mixing mechanism comprises a rotating shaft I, a connecting seat, a telescopic rod, a connecting frame, a stirring rod I, a rotating shaft II, a stirring rod II, a transmission assembly and a protection assembly. According to the device, the two groups of stirring elements are arranged in the device, so that the lithocholic acid intermediate raw material and the palladium-carbon catalyst in the device are uniformly mixed and stirred, and the mixing speed of the lithocholic acid intermediate raw material and the palladium-carbon catalyst is increased; the mixing speed of the lithocholic acid intermediate raw material and the palladium carbon catalyst is further improved, the generation of isomer impurities is reduced, and the preparation speed of the lithocholic acid intermediate is accelerated.

Description

Technical Field

[0001] This utility model relates to the field of lithocholic acid intermediates, specifically a reaction vessel for producing lithocholic acid intermediates. Background Technology

[0002] Lithocarboxylic acid intermediates mainly refer to compounds generated in the chemical synthesis pathway of lithochylic acid or its derivatives (such as 7-oxo-lithochylic acid). In the production process of lithochylic acid intermediates, palladium-on-carbon catalyst is added to the lithochylic acid intermediate raw material, and a stirring device is used to ensure uniform contact between the catalyst and the lithochylic acid intermediate, improving the selectivity of the 5β-hydrogen configuration and reducing the formation of isomer impurities. In the prior art, patent publication number CN 217093492U discloses an oxidation reactor for producing ticagrelor intermediates, including a reactor body, which is circular. A reactor lid is installed on the top of the reactor body. A pressure gauge is installed at one end of the top of the reactor lid, and a vent valve is installed on one side of the pressure gauge. A feed inlet is installed at the other end of the top of the reactor lid, and a discharge outlet is installed at the bottom of one side of the reactor lid. A base is installed at the bottom of the reactor body. A motor is installed in the middle of the top of the reactor lid, and the drive shaft of the motor passes through the reactor lid. A rotating rod is connected to the bottom of the drive shaft of the motor. First stirring rods are connected to both sides of the rotating rod, and a second stirring rod is installed at the bottom of one side of the first stirring rod. The present invention utilizes a first and a second stirring rod to uniformly stir the reaction liquid at the bottom of the reactor, ensuring that all reactants participate in the reaction and react fully. The inclusion of a water inlet pipe and a freezer maintains a low temperature within the reactor, conducive to the reaction. The device employs multiple horizontally rotating stirring units to mix the raw materials, improving reaction efficiency. However, the fixed horizontal stirring method limits the coverage area, leaving room for improvement in the mixing rate. Therefore, we propose a reactor for producing lithocholic acid intermediates. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a reaction vessel for producing lithocholic acid intermediates. The device adopts two sets of stirring elements, and utilizes the combination of horizontal and vertical stirring to mix and stir the lithocholic acid intermediate raw material and palladium on carbon catalyst in the device, thereby improving the mixing rate of the lithocholic acid intermediate raw material and palladium on carbon catalyst. At the same time, the device increases the stirring coverage of the two sets of stirring elements in the device through reciprocating components, further improving the mixing rate of lithocholic acid intermediate raw material and palladium on carbon catalyst, reducing the generation of isomer impurities, and accelerating the preparation speed of lithocholic acid intermediates, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a reaction vessel for producing lithocholic acid intermediates, comprising a reaction shell, wherein the top wall of the reaction shell is provided with transversely symmetrically distributed feed pipes, and further comprising a mixing mechanism;

[0005] The mixing mechanism includes a rotating shaft, a connecting seat, a telescopic rod, a connecting frame, a stirring rod, a rotating shaft, a stirring rod, a transmission assembly, and a protective assembly. The connecting seat is rotatably connected to the top wall of the reaction shell via the rotating shaft. A connecting frame is provided on the lower side of the connecting seat via the telescopic ends of the horizontally symmetrically distributed telescopic rods. A stirring rod is provided at the lower end of the connecting frame. Stirring rods are rotatably connected to the middle of both ends of stirring rod 1 via rotating shafts. A transmission assembly is provided between stirring rod 1, rotating shaft 2, and the reaction shell. A protective assembly is provided between the transmission assembly and stirring rod 1. This device uses two sets of stirring elements, combining horizontal and vertical stirring to mix and stir the lithocholic acid intermediate raw material and palladium-carbon catalyst in the device, thereby increasing the mixing rate of the lithocholic acid intermediate raw material and palladium-carbon catalyst. At the same time, the device increases the stirring coverage of the two sets of stirring elements in the device through the reciprocating assembly, further increasing the mixing rate of the lithocholic acid intermediate raw material and palladium-carbon catalyst, reducing the generation of isomer impurities, and accelerating the preparation speed of lithocholic acid intermediate.

[0006] Furthermore, it also includes a microcontroller, which is located outside the reaction shell. The input terminal of the microcontroller is electrically connected to an external power supply, which facilitates the control of the electrical components inside the device.

[0007] Furthermore, the transmission assembly includes a fixed seat, a reciprocating screw, and an annular block. The fixed seat is located on the conical bottom wall of the reaction shell. The reciprocating screw is located on the upper side of the fixed seat. An annular block is located in the middle of the lower end of the stirring rod. The interior of the annular block is slidably connected to the reciprocating screw through a crescent lock, so that the two sets of stirring elements in the reactor for producing lithocholic acid intermediates can move vertically back and forth.

[0008] Furthermore, the transmission assembly also includes a fixed shaft, an annular seat, a circular shell, a first bevel gear, a second bevel gear, and a guide groove. The fixed shaft is located at the upper end of the reciprocating screw. An annular seat is slidably connected to the outer side of the fixed shaft. A circular shell is rotatably connected to the outer side of the annular seat through a first sealed bearing. A first bevel gear is provided on the outer side of the annular seat. A second bevel gear is provided on the inner side of each of the two rotating shafts. The second bevel gears are meshed with the first bevel gear. Both the first and second bevel gears are located inside the circular shell. The end of the second rotating shaft near the center of the reaction shell is rotatably connected to the inner wall of the circular shell through a second sealed bearing. A guide groove is provided on the outer side of the fixed shaft. The interior of the annular seat is slidably connected to the guide groove through a guide strip, so that the two sets of stirring elements in the reactor for producing lithocholic acid intermediates can stir vertically and horizontally respectively.

[0009] Furthermore, the protective assembly includes a first ring, a second ring, guide rods, and bellows. The first ring is rotatably connected to an annular groove on the upper side of the fixed seat via a third sealed bearing. The lower outer end of the fixed shaft is rotatably connected to the second ring via a fourth sealed bearing. Guide rods are symmetrically distributed between the second ring and the first ring. The guide rods are slidably connected to a circular hole at the center of the bottom end of the first stirring rod. Bellows are provided between the first and second rings and the center of the bottom end of the first stirring rod. The bellows are movably sleeved on the outer end of the reciprocating screw to wrap and protect the exposed part of the reciprocating screw in the reactor for producing lithocholic acid intermediates.

[0010] Furthermore, a low-speed motor is provided on the upper side of the reaction shell. The input end of the low-speed motor is electrically connected to the output end of the microcontroller. The output shaft of the low-speed motor is fixedly connected to the upper end of the rotating shaft, which provides power for mixing and stirring the lithocholic acid intermediate and palladium carbon catalyst in the reaction vessel for producing the lithocholic acid intermediate.

[0011] Furthermore, a discharge pipe is provided through the conical bottom wall of the reaction shell, and a solenoid valve is connected in series at the upper end of the discharge pipe. The input end of the solenoid valve is electrically connected to the output end of the microcontroller to control the opening and closing of the discharge pipe of the reactor used for producing lithocholic acid intermediates.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This reaction vessel for producing lithocholic acid intermediates has the following advantages:

[0013] When using the reactor for producing lithocholic acid intermediates, the device employs two sets of stirring elements. Through bevel gear meshing, the two sets of stirring elements stir horizontally and vertically respectively, thereby mixing and stirring the lithocholic acid intermediate raw material and the palladium-on-carbon catalyst within the device, increasing the mixing rate of the lithocholic acid intermediate raw material and the palladium-on-carbon catalyst. At the same time, the device uses reciprocating components to move the two sets of stirring elements vertically up and down within the device, increasing the stirring coverage of the two sets of stirring elements within the device, further improving the mixing rate of the lithocholic acid intermediate raw material and the palladium-on-carbon catalyst, reducing the formation of isomer impurities, and accelerating the preparation speed of lithocholic acid intermediates. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0016] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0017] Figure 4 This is an enlarged structural diagram of section B of the present invention.

[0018] In the diagram: 1. Reaction shell, 2. Microcontroller, 3. Feed pipe, 4. Mixing mechanism, 41. Rotating shaft one, 42. Connecting seat, 43. Telescopic rod, 44. Connecting frame, 45. Stirring rod one, 46. Rotating shaft two, 47. Stirring rod two, 48. Transmission assembly, 481. Fixed seat, 482. Reciprocating screw, 483. Ring block, 484. Fixed shaft, 485. Ring seat, 486. Circular shell, 487. Bevel gear one, 488. Bevel gear two, 489. Guide groove, 49. Protective assembly, 491. Circular ring one, 492. Circular ring two, 493. Guide rod, 494. Bellows, 5. Low-speed motor, 6. Discharge pipe, 7. Solenoid valve. Detailed Implementation

[0019] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This embodiment provides a technical solution: a reaction vessel for producing lithocholic acid intermediates, including a reaction shell 1, with transversely symmetrically distributed feed pipes 3 penetrating the top wall of the reaction shell 1, and also including a microcontroller 2, which is located outside the reaction shell 1. The input terminal of the microcontroller 2 is electrically connected to an external power supply. When preparing lithocholic acid intermediates by reaction, the lithocholic acid intermediate raw materials and palladium on carbon catalyst are first transported into the device through the corresponding feed pipes 3 in a certain proportion. It also includes a mixing mechanism 4.

[0021] Mixing mechanism 4 includes a rotating shaft 41, a connecting seat 42, a telescopic rod 43, a connecting frame 44, a stirring rod 45, a rotating shaft 46, a stirring rod 47, a transmission assembly 48, and a protective assembly 49. The connecting seat 42 is rotatably connected to the top wall of the reaction shell 1 via the rotating shaft 41. A connecting frame 44 is provided on the lower side of the connecting seat 42 via the telescopic ends of the laterally symmetrically distributed telescopic rods 43. A stirring rod 45 is provided at the lower end of the connecting frame 44. A stirring rod 47 is rotatably connected to the middle of both ends of the stirring rod 45 via the rotating shaft 46 (the rotating shaft 46 and the stirring rod 45 are rotatably connected via a sealed bearing). A transmission assembly 48 is provided between the stirring rod 45, the rotating shaft 46, and the reaction shell 1. A protective assembly is provided between the transmission assembly 48 and the stirring rod 45. 49. The transmission assembly 48 includes a fixed seat 481, a reciprocating screw 482, and an annular block 483. The fixed seat 481 is disposed on the conical bottom wall of the reaction shell 1. The reciprocating screw 482 is disposed on the upper side of the fixed seat 481. An annular block 483 is disposed in the middle of the lower end of the stirring rod 45. The interior of the annular block 483 is slidably connected to the reciprocating screw 482 through a crescent lock. The transmission assembly 48 also includes a fixed shaft 484, an annular seat 485, a circular shell 486, a first bevel gear 487, a second bevel gear 488, and a guide groove 489. The fixed shaft 484 is disposed on the upper end of the reciprocating screw 482. The annular seat 485 is slidably connected to the outer side of the fixed shaft 484. The circular shell 486 is rotatably connected to the outer side of the annular seat 485 through a sealed bearing. A bevel gear 487 is provided, and two bevel gears 488 are provided on the inner sides of the two rotating shafts 46. The bevel gears 488 mesh with the bevel gear 487. Both the bevel gears 487 and 488 are located inside the circular shell 486. The end of the rotating shaft 46 near the center of the reaction shell 1 is rotatably connected to the inner wall of the circular shell 486 through a sealed bearing. A guide groove 489 is provided on the outer side of the fixed shaft 484. The interior of the annular seat 485 is slidably connected to the guide groove 489 through a guide bar. The protective assembly 49 includes a first ring 491, a second ring 492, a guide rod 493, and a bellows 494. The first ring 491 is rotatably connected to the annular groove on the upper side of the fixed seat 481 through a sealed bearing. The lower end of the outer side of the fixed shaft 484 A second ring 492 is rotatably connected via a sealed bearing. Symmetrically distributed guide rods 493 are provided between the second ring 492 and the first ring 491. Each guide rod 493 is slidably connected to a circular hole at the center of the bottom end of the first stirring rod 45. A bellows 494 is provided between the first ring 491 and the second ring 492 and the center of the bottom end of the first stirring rod 45. The bellows 494 are movably sleeved on the outer end of the reciprocating screw 482. A low-speed motor 5 is located on the upper side of the reaction shell 1. The input end of the low-speed motor 5 is electrically connected to the output end of the microcontroller 2. The output shaft of the low-speed motor 5 is fixedly connected to the upper end of the rotating shaft 41. A discharge pipe 6 penetrates the conical bottom wall of the reaction shell 1. A solenoid valve 7 is connected in series at the upper end of the discharge pipe 6. The input end of the solenoid valve 7 is electrically connected to the output end of the microcontroller 2.The microcontroller 2 starts the low-speed motor 5, causing its output shaft to drive the rotating shaft 41 to rotate. The rotating shaft 41, through the connecting seat 42, the telescopic rod 43, and the connecting frame 44, drives the stirring rod 45 to revolve around the axis of the device, thereby mixing and stirring the lithocholic acid intermediate raw material and the palladium-on-carbon catalyst in the device. At the same time, as the stirring rod 45 revolves around the axis of the device, it drives the stirring rod 47 to move synchronously through the rotating shaft 46. During the revolving process of the rotating shaft 46, the meshing connection between its own bevel gear 488 and bevel gear 487 causes the stirring rod 47 to vertically stir around the axis of the rotating shaft 46, thereby mixing and stirring the lithocholic acid intermediate raw material and the palladium-on-carbon catalyst in the device. The arc-shaped protrusion of the crescent-shaped lock within the annular block 483 is embedded in the groove of the helical slot of the reciprocating screw 482. Its curved contour is in close contact with the sidewall of the helical slot, forming a sliding pair. The rotation of the crescent-shaped lock drives the annular block 483 to move vertically along the helical slot of the reciprocating screw 482, thereby achieving linear reciprocating movement. This indirectly drives the stirring rod 45 and the stirring rod 47 to move vertically up and down simultaneously. By increasing the direct stirring coverage of the stirring unit on the lithocholic acid intermediate raw material and palladium-on-carbon catalyst in the device, the mixing rate between the lithocholic acid intermediate raw material and the palladium-on-carbon catalyst is increased. During this process, the stirring rod 47, through the rotating shaft 46, causes the annular seat 485 to move along the guide groove 489 via its own guide bar. The first bevel gear 487 and the second bevel gear 488 move vertically and reciprocally in sync. The telescopic end of the telescopic rod 43 moves vertically in sync with the stirring rod 45 via the connecting frame 44. Simultaneously, during the mixing of the lithocholic acid intermediate raw material and the palladium-carbon catalyst within the device, the exposed end of the reciprocating screw 482 is protected by the bellows 494, preventing direct contact between the material and the screw. Both ends of the bellows 494 are slidably engaged with the central hole at the bottom of the stirring rod 45 via guide rods 493, thus rotating synchronously with the rotation of the stirring rod 45. The bellows 494 is a corrugated structure made of multiple layers of stacked metal sheets. Its working principle is to achieve self-adaptive sealing through elastic deformation to maintain good sealing properties. The device features a sealing performance, where stirring ensures rapid and uniform mixing of the lithocholic acid intermediate and the palladium-on-carbon catalyst, thereby reducing the formation of isomer impurities. After the lithocholic acid intermediate reaction is completed, the microcontroller 2 opens the solenoid valve 7, collecting the material through the discharge pipe 6. The device employs two sets of stirring elements, combining horizontal and vertical stirring to thoroughly mix the lithocholic acid intermediate and the palladium-on-carbon catalyst, increasing the mixing rate. Simultaneously, the reciprocating assembly enhances the stirring coverage of the two sets of stirring elements within the device, further improving the mixing rate, reducing isomer impurity formation, and accelerating the preparation speed of the lithocholic acid intermediate.

[0022] The working principle of the reaction vessel for producing lithocholic acid intermediates provided by this utility model is as follows: When preparing lithocholic acid intermediates, the lithocholic acid intermediate raw material and palladium-on-carbon catalyst are first transported into the device through the corresponding feed pipe 3 in a certain proportion. Then, the single-chip microcomputer 2 starts the low-speed motor 5, which drives the first rotating shaft 41 to rotate through its output shaft. The first rotating shaft 41 drives the first stirring rod 45 to revolve around the axis of the device through the connecting seat 42, the telescopic rod 43 and the connecting frame 44, thereby mixing and stirring the lithocholic acid intermediate raw material and palladium-on-carbon catalyst in the device. At the same time, during the revolve of the first stirring rod 45 around the axis of the device, the second stirring rod 47 is moved synchronously through the second rotating shaft 46. During its revolution around the axis of the device, the stirring rod 47 vertically stirs around the axis of the rotating shaft 46 through the meshing connection between its own bevel gear 488 and bevel gear 487, thereby mixing and stirring the lithocholic acid intermediate raw material and palladium on carbon catalyst in the device. At the same time, during the revolution of the stirring rod 45, the arc-shaped protrusion of the crescent lock in the annular block 483 is embedded in the groove of the helical screw 482. Its curved contour is in close contact with the side wall of the helical groove, forming a sliding pair. The rotation of the crescent lock drives the annular block 483 to move vertically along the helical groove of the reciprocating screw 482, thereby realizing linear reciprocating movement, which in turn causes the annular block 483 to indirectly drive the stirring rod. Stirring rod 45 and stirring rod 47 move vertically and reciprocally in sync. By increasing the direct stirring coverage of the stirring unit on the lithocholic acid intermediate raw material and palladium-on-carbon catalyst in the device, the mixing rate between the lithocholic acid intermediate raw material and palladium-on-carbon catalyst is improved. During this process, stirring rod 47, through rotating shaft 46, causes the annular seat 485 to drive bevel gear 487 and bevel gear 488 to move vertically and reciprocally in sync along the guide groove 489 via its own guide bar. The telescopic end of telescopic rod 43 moves vertically in sync with stirring rod 45 through connecting frame 44. At the same time, during the mixing process of lithocholic acid intermediate raw material and palladium-on-carbon catalyst in the device, the exposed reciprocating screw 482 is exposed through bellows 494. The ends are wrapped and protected to prevent the material inside the device from directly contacting the reciprocating screw 482. At the same time, both the upper and lower ends of the bellows 494 are slidably engaged with the bottom center hole of the stirring rod 45 through the guide rod 493, so that it rotates synchronously with the rotation of the stirring rod 45. The bellows 494 is a corrugated structure made of multiple layers of metal sheets. Its working principle is to achieve self-adaptive sealing through elastic deformation to maintain good sealing performance. Stirring makes the lithocholic acid intermediate raw material and palladium carbon catalyst mix quickly and evenly, thereby reducing the generation of isomer impurities. After the lithocholic acid intermediate reaction is completed, the microcontroller 2 opens the solenoid valve 7 and collects it through the discharge pipe 6.

[0023] It is worth noting that the microcontroller 2 disclosed in the above embodiments can be an MSP430, the low-speed motor 5 can be a YDS90, and the solenoid valve 7 can be a ZQDF-3Y-40. The microcontroller 2 controls the operation of the low-speed motor 5 and the solenoid valve 7 using methods commonly used in the prior art.

[0024] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A reaction vessel for producing lithocholic acid intermediates, comprising a reaction shell (1), wherein the top wall of the reaction shell (1) is provided with transversely symmetrically distributed feed pipes (3), characterized in that: It also includes a hybrid mechanism (4); Mixing mechanism (4): It includes a rotating shaft (41), a connecting seat (42), a telescopic rod (43), a connecting frame (44), a stirring rod (45), a rotating shaft (46), a stirring rod (47), a transmission assembly (48), and a protective assembly (49). The connecting seat (42) is rotatably connected to the top wall of the reaction shell (1) through the rotating shaft (41). A connecting frame (44) is provided on the lower side of the connecting seat (42) through the telescopic ends of the horizontally symmetrically distributed telescopic rods (43). A stirring rod (45) is provided at the lower end of the connecting frame (44). A stirring rod (47) is rotatably connected to the middle of the left and right ends of the stirring rod (45) through the rotating shaft (46). A transmission assembly (48) is provided between the stirring rod (45), the rotating shaft (46), and the reaction shell (1). A protective assembly (49) is provided between the transmission assembly (48) and the stirring rod (45).

2. The reaction vessel for producing lithocholic acid intermediates according to claim 1, characterized in that: It also includes a microcontroller (2), which is located outside the reaction shell (1), and the input terminal of the microcontroller (2) is electrically connected to an external power supply.

3. The reaction vessel for producing lithocholic acid intermediates according to claim 1, characterized in that: The transmission assembly (48) includes a fixed seat (481), a reciprocating screw (482), and an annular block (483). The fixed seat (481) is located on the conical bottom wall of the reaction shell (1). The reciprocating screw (482) is provided on the upper side of the fixed seat (481). An annular block (483) is provided at the middle of the lower end of the stirring rod (45). The interior of the annular block (483) is slidably connected to the reciprocating screw (482) through a crescent lock.

4. The reaction vessel for producing lithocholic acid intermediates according to claim 3, characterized in that: The transmission assembly (48) further includes a fixed shaft (484), an annular seat (485), a circular shell (486), a first bevel gear (487), a second bevel gear (488), and a guide groove (489). The fixed shaft (484) is located at the upper end of the reciprocating lead screw (482). The annular seat (485) is slidably connected to the outer side of the fixed shaft (484). The circular shell (486) is rotatably connected to the outer side of the annular seat (485) through a sealed bearing. The first bevel gear (487) is located on the outer side of the annular seat (485), and two rotating shafts are also present. (46) is provided with bevel gear two (488) on the opposite inner side. Bevel gear two (488) is meshed with bevel gear one (487). Bevel gear one (487) and bevel gear two (488) are both located inside the circular shell (486). The end of the rotating shaft two (46) near the center of the reaction shell (1) is rotatably connected to the inner wall of the circular shell (486) through the sealed bearing two. The outer side of the fixed shaft (484) is provided with a guide groove (489). The inside of the annular seat (485) is slidably connected to the guide groove (489) through the guide strip.

5. The reaction vessel for producing lithocholic acid intermediates according to claim 4, characterized in that: The protective assembly (49) includes a first ring (491), a second ring (492), a guide rod (493), and a bellows (494). The first ring (491) is rotatably connected to the annular groove on the upper side of the fixed seat (481) through a sealed bearing three. The lower outer end of the fixed shaft (484) is rotatably connected to the second ring (492) through a sealed bearing four. There are symmetrically distributed guide rods (493) between the second ring (492) and the first ring (491). The guide rods (493) are all slidably connected to the round hole in the middle of the bottom end of the stirring rod (45). There are bellows (494) between the first ring (491) and the second ring (492) and the middle of the bottom end of the stirring rod (45). The bellows (494) are movably sleeved on the outer end of the reciprocating screw (482).

6. The reaction vessel for producing lithocholic acid intermediates according to claim 2, characterized in that: A low-speed motor (5) is provided on the upper side of the reaction shell (1). The input end of the low-speed motor (5) is electrically connected to the output end of the microcontroller (2). The output shaft of the low-speed motor (5) is fixedly connected to the upper end of the rotating shaft (41).

7. The reaction vessel for producing lithocholic acid intermediates according to claim 2, characterized in that: The conical bottom wall of the reaction shell (1) is provided with a discharge pipe (6), and a solenoid valve (7) is connected in series at the upper end of the discharge pipe (6). The input end of the solenoid valve (7) is electrically connected to the output end of the microcontroller (2).

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