Reaction kettle for preparing medicine intermediate

Abstract

The invention provides a medicine intermediate preparation reaction kettle which comprises a side equipment frame, a pipe clamp is arranged on the surface of one side of the side equipment frame, a flow dividing feeding and discharging pipe is fixedly installed on the surface of one side of the side equipment frame through the pipe clamp, a protective shell is arranged on the surface of the flow dividing feeding and discharging pipe, and a branch pipe shell is arranged on the surface of the lower end of the protective shell. A stirring motor is arranged in the branch pipe shell, a reaction inner kettle is arranged below the stirring motor, two filter screen pipes are arranged on the surface of the lower end of the reaction inner kettle, and a quantitative conveying device is arranged on the surface of the lower end of the reaction inner kettle between the two filter screen pipes. The problems that in the prior art, stirring in different directions cannot be conducted on the interior, quantitative discharging cannot be conducted on the prepared medical intermediate, and the dosage of the medical intermediate needs to be metered again are solved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of drug intermediate preparation, and in particular to a standby reaction kettle for drug intermediate preparation. Background Art

[0002] The broad understanding of a reactor is a container for physical or chemical reactions. Through the structural design and parameter configuration of the container, the heating, evaporation, cooling and low-speed mixing functions required by the process can be achieved. Reactors are widely used in petroleum, chemical, rubber, pesticide, dye, medicine, and food. They are pressure vessels used to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonization, polymerization, and condensation, such as reactors, reaction pots, decomposition pots, polymerization kettles, etc.; the materials are generally carbon manganese steel, stainless steel, zirconium, nickel-based alloys and other composite materials. At present, the reactor used to make drugs generally has only one motor driving one stirring rod to stir the raw materials in the reactor. The stirring time is long and the stirring effect is not ideal. In order to overcome the existing shortcomings, we need to develop a new type of drug intermediate reactor.

[0003] In the invention patent application with application number CN201720461082.9, application publication date 2017.17.17, and titled "A New Type of Pharmaceutical Intermediate Reactor", a reactor body, support rods, a feed pipe, a valve, a stirring device and a discharging device are included. Support rods are symmetrically arranged at the bottom of the reactor body, a feed pipe is arranged at the upper left side of the reactor body, a valve is arranged on the feed pipe, a stirring device is arranged at the center of the top of the reactor body, and a discharging device is arranged at the center of the bottom of the reactor body. The device stirs the raw materials in the reactor body through the stirring device. When the raw materials are mixed evenly, the stirring device is stopped, and the raw materials after the reaction are discharged through the discharging device.

[0004] During the operation of the specific embodiment, the inventors found the following defects: when preparing the pharmaceutical intermediate, the internal pharmaceutical intermediate raw materials cannot be stirred in different directions, and the prepared pharmaceutical intermediate cannot be quantitatively discharged, and the dosage of the pharmaceutical intermediate needs to be re-measured. Summary of the invention

[0005] 1. Technical problems to be solved by the invention: The present invention provides a spare reaction kettle for preparing a pharmaceutical intermediate, which is used to solve the problem in the above-mentioned background technology that when preparing a pharmaceutical intermediate, the inside cannot be stirred in different directions, and the prepared pharmaceutical intermediate cannot be quantitatively discharged, and the dosage of the pharmaceutical intermediate needs to be re-measured.

[0006] 2. Technical solution: In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is as follows: it includes a side equipment frame, a pipe clamp is arranged on one side surface of the side equipment frame, a branch inlet and outlet pipe is fixedly installed on one side surface of the side equipment frame through the pipe clamp, a protective shell is arranged on the surface of the branch inlet and outlet pipe, a branch pipe shell is arranged on the lower end surface of the protective shell, a stirring motor is arranged inside the branch pipe shell, a reaction kettle is arranged below the stirring motor, two filter screen tubes are arranged on the lower end surface of the reaction kettle, and a quantitative conveying device is arranged between the two filter screen tubes on the lower end surface of the reaction kettle.

[0007] Furthermore, the branch inlet and outlet pipes are respectively installed on both sides of the side equipment frame, are of segmented design, and are respectively installed on the surface of the filter pipe and the quantitative conveying device, and the branch pipe shell is arranged on the surface above the filter pipe and the quantitative conveying device.

[0008] Furthermore, the diverter inlet and outlet pipes include a straight feed pipe, a feeding port is provided on the top surface of the straight feed pipe, a diverter fork pipe is connected to the lower end of the straight feed pipe, a feed connector 1 is provided at one end of the diverter fork pipe, a feed connector 2 is provided at the other end of the diverter fork pipe, a forked discharge pipe is provided above the diverter fork pipe, a drainage pump is installed at the other end of the diverter discharge pipe, an upper drainage pipe is provided above the drainage pump, a sampling curved pipe is provided on one side surface of the upper drainage pipe, and a sampling valve is provided at the connection position between the sampling curved pipe and the upper drainage pipe.

[0009] Furthermore, the feed connector 1 and the feed connector 2 are respectively interconnected with two filter tubes, and one end of the bifurcated discharge pipe is provided with two connectors, which are respectively interconnected with the quantitative conveying device.

[0010] Furthermore, the inner reactor of the reaction vessel includes an upper outer tank body, the lower end surface of the upper outer tank body is fixedly connected to a stirring reaction tank, the outer side surface of the stirring reaction tank is provided with a feeding pipe, a transmission rod is provided inside the upper outer tank body, the lower end surface of the transmission rod is provided with a stirring blade, the surface of the transmission rod is transmission-connected to an upper bevel gear, one side of the upper bevel gear is meshed with a transmission gear, a sliding clamping groove is provided at the connection position between the upper outer tank body and the inner wall of the stirring reaction tank, the surface of the sliding clamping groove is slidably connected to a rotating ring, the upper surface of the rotating ring is fixedly connected to a lower bevel gear, and the lower end surface of the rotating ring is fixedly connected to a reverse stirring plate.

[0011] Furthermore, the transmission rod and the stirring motor form a transmission structure, the stirring blades form a stirring structure inside the stirring reaction tank through the transmission rod, the lower bevel gear is meshed and connected with the transmission gear, the reverse stirring plate and the rotating ring form a rotating structure on the surface of the sliding groove through the lower bevel gear, and the stirring blades and the reverse stirring plate rotate in the opposite direction, and the quantitative conveying device is installed on the surface of the stirring reaction tank.

[0012] Furthermore, the quantitative conveying device includes a liquid storage chamber, a sealing block is fixedly connected to the outer surface of the liquid storage chamber, a trachea joint is provided on the upper surface of the sealing block, an airbag chamber is provided inside the sealing block, a telescopic threaded pull rod is provided inside the liquid storage chamber, a contraction extrusion plate is threadedly connected to the surface of the telescopic threaded pull rod, a one-way leather pad is provided on the inner wall surface of the liquid storage chamber, and an extrusion tube is provided below the one-way leather pad.

[0013] Furthermore, the air pipe joint is externally connected to an air pump, the telescopic threaded rod forms a telescopic structure inside the liquid storage chamber through the expansion and contraction of the airbag cavity, the contraction extrusion plate forms a rotating structure on the surface of the telescopic threaded rod, and its position on the surface of the telescopic threaded rod is adjusted by rotation, and the liquid storage chamber is interconnected with the forked discharge pipe through an extrusion tube.

[0014] 3. Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The invention is reasonably designed. When the preparation operation of the pharmaceutical intermediate is carried out, the intermediate raw material is input into the split fork pipe through the feed straight pipe and the feeding port in the split inlet and outlet pipe, and is sent to the inside of the reaction kettle through the feed joint 2 and the feed joint 1 under the action of the feed pump, and is finally transported to the inside of the forked discharge pipe through the quantitative conveying device. Finally, under the action of the discharge pump, the prepared intermediate is transported to the top of the upper discharge pipe for discharge. When a small dose of sampling is required, sampling is carried out from one end of the sampling curved pipe by opening the sampling valve. The double-port feeding and double-port discharging avoid the blockage of the inlet and outlet caused by the blockage of the inner wall of the reaction kettle. Under the action of the liquid displacement pump, the intermediate raw material enters the stirring reaction tank, and the stirring motor drives the transmission rod and the stirring blades below to stir the raw materials on the inner wall of the stirring reaction tank. During this process, the upper bevel gear on the surface of the transmission rod rotates to drive the transmission gear and the lower bevel gear on its surface to rotate, and the lower bevel gear drives the rotating ring to rotate. At the same time, the rotating ring and the reverse stirring plate below rotate, and the intermediate raw material is stirred inside and outside and in different directions by the reverse stirring plate and the stirring blades, thereby achieving a full stirring reaction of the pharmaceutical intermediate raw material; When discharging is carried out, the airbag cavity on the inner wall of the sealing block is repeatedly inflated and deflated through an air pump, so that the airbag cavity is repeatedly expanded and contracted, driving the telescopic threaded rod and the contraction extrusion plate to repeatedly expand and contract inside the liquid storage cavity, so that the intermediate liquid raw material inside the liquid storage cavity is squeezed from the one-way leather pad to the inside of the extrusion tube under the extrusion of the contraction extrusion plate, and finally discharged through the forked discharge pipe in the diversion inlet and outlet pipe. The position of the contraction extrusion plate on the surface of the telescopic threaded rod can be adjusted by rotating the contraction extrusion plate, thereby changing the extrusion stroke of the telescopic threaded rod each time, thereby achieving the purpose of quantitative discharging of the pharmaceutical intermediates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a three-dimensional schematic diagram of the interior of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the split flow inlet and outlet pipe of the present invention; Figure 4 It is a three-dimensional schematic diagram of the protective housing of the present invention; Figure 5 It is a three-dimensional schematic diagram of the reaction inner kettle of the present invention; Figure 6 It is a schematic plan view of the reaction inner kettle of the present invention; Figure 7 It is a three-dimensional schematic diagram of the rotating ring of the present invention; Figure 8 It is a top view schematic diagram of a stirred reaction tank of the present invention; Fig. 9 for Figure 6 A is an enlarged schematic diagram.

[0016] Reference numerals: 1. Side equipment rack; 2. Pipe clamp; 3. Diverter inlet and outlet pipes; 301. Feed straight pipe; 302. Feeding port; 303. Diverter fork pipe; 304. Feed connector 1; 305. Feed connector 2; 306. Diverter outlet pipe; 307. Drain pump; 308. Upper drain pipe; 309. Sampling curved pipe; 310. Sampling valve; 4. Protective shell; 5. Branch pipe shell; 6. Stirring motor; 7. Reactor inner kettle; 701. Upper outer tank; 702. Stirring reactor; 70 3. Feeding pipe; 704. Transmission rod; 705. Stirring blade; 706. Upper bevel gear; 707. Transmission gear; 708. Sliding clamping groove; 709. Rotating ring; 710. Lower bevel gear; 711. Reverse stirring plate; 8. Feeding pump; 9. Quantitative conveying device; 901. Liquid storage chamber; 902. Sealing block; 903. Air pipe joint; 904. Air bag chamber; 905. Telescopic threaded pull rod; 906. Contraction extrusion plate; 907. One-way leather pad; 908. Extrusion tube. DETAILED DESCRIPTION

[0017] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example: Refer to the attached Figure 1-9 , including a side equipment frame 1, a pipe clamp 2 is provided on one side surface of the side equipment frame 1, a shunt inlet and outlet pipe 3 is fixedly installed on one side surface of the side equipment frame 1 through the pipe clamp 2, a protective shell 4 is provided on the surface of the shunt inlet and outlet pipe 3, a branch pipe shell 5 is provided on the lower end surface of the protective shell 4, a stirring motor 6 is provided inside the branch pipe shell 5, a reaction kettle 7 is provided below the stirring motor 6, two feeding pumps 8 are provided on the lower end surface of the reaction kettle 7, a quantitative conveying device 9 is provided between the two feeding pumps 8 and the lower end surface of the reaction kettle 7, the shunt inlet and outlet pipes 3 are respectively installed on both sides of the side equipment frame 1, and are of segmented design, and are respectively installed on the surfaces of the feeding pump 8 and the quantitative conveying device 9, the branch pipe shell 5 is provided on the upper surface of the feeding pump 8 and the quantitative conveying device 9, and the device stirs the intermediate raw materials through the reverse stirring plate 711 and the stirring blades 705 inside and outside and in different directions, thereby achieving a sufficient stirring reaction of the pharmaceutical intermediate raw materials; The split inlet and outlet pipe 3 includes a straight feed pipe 301, a feeding port 302 is arranged on the top surface of the straight feed pipe 301, a split fork pipe 303 is connected to the lower end of the straight feed pipe 301, a feed connector 1 304 is arranged at one end of the split fork pipe 303, a feed connector 2 305 is arranged at the other end of the split fork pipe 303, a split outlet pipe 306 is arranged above the split fork pipe 303, and a discharge pipe 306 is installed at the other end of the split outlet pipe 306. A liquid pump 307 is provided with an upper liquid discharge pipe 308 above the liquid discharge pump 307, a sampling curved pipe 309 is provided on one side surface of the upper liquid discharge pipe 308, a sampling valve 310 is provided at the connection position between the sampling curved pipe 309 and the upper liquid discharge pipe 308, the feed connector 1 304 and the feed connector 2 305 are respectively interconnected with the two feeding pumps 8, and two connectors are provided at one end of the forked discharge pipe 306, which are respectively interconnected with the quantitative conveying device 9.

[0022] In this embodiment, when the pharmaceutical intermediate preparation operation is performed, the intermediate raw material is input into the split fork pipe 303 through the feed straight pipe 301 and the feeding port 302 in the split inlet and outlet pipe 3, and is sent to the inside of the reaction kettle 7 through the feed connector 2 305 and the feed connector 1 304 under the action of the feed pump 8, and is finally transported to the inside of the forked discharge pipe 306 through the quantitative delivery device 9, and finally, under the action of the discharge pump 307, the prepared intermediate is transported to the top of the upper discharge pipe 308 for discharge. When a small dose of sampling is required, sampling is performed from one end of the sampling curved pipe 309 by opening the sampling valve 310. Through the double-port feeding and double-port discharging, the blockage of the inlet and outlet caused by the blockage of the inner wall of the reaction kettle 7 is avoided; The inner reactor 7 comprises an upper outer tank body 701, a stirring reaction tank 702 is fixedly connected to the lower end surface of the upper outer tank body 701, a feeding pipe 703 is arranged on the outer side surface of the stirring reaction tank 702, a transmission rod 704 is arranged inside the upper outer tank body 701, a stirring fan blade 705 is arranged on the lower end surface of the transmission rod 704, an upper bevel gear 706 is transmission-connected to the surface of the transmission rod 704, a transmission gear 707 is meshedly connected to one side of the upper bevel gear 706, a sliding clamping groove 708 is arranged at the connection position between the upper outer tank body 701 and the inner wall of the stirring reaction tank 702, and a rotating ring 709 is slidably connected to the surface of the sliding clamping groove 708, A lower bevel gear 710 is fixedly connected to the upper surface of the rotating ring 709, and a reverse stirring plate 711 is fixedly connected to the lower end surface of the rotating ring 709. The transmission rod 704 and the stirring motor 6 constitute a transmission structure. The stirring blades 705 constitute a stirring structure inside the stirring reaction tank 702 through the transmission rod 704. The lower bevel gear 710 is meshed and connected with the transmission gear 707. The reverse stirring plate 711 and the rotating ring 709 constitute a rotating structure on the surface of the sliding groove 708 through the lower bevel gear 710. The stirring blades 705 and the reverse stirring plate 711 rotate in the opposite direction, and the quantitative conveying device 9 is installed on the surface of the stirring reaction tank 702.

[0023] In this embodiment, under the action of the liquid displacement pump 307, the intermediate raw material enters the stirring reaction tank 702, and the stirring motor 6 drives the transmission rod 704 and the stirring blade 705 below to stir the raw material on the inner wall of the stirring reaction tank 702. During this process, the upper bevel gear 706 on the surface of the transmission rod 704 rotates to drive the transmission gear 707 and the lower bevel gear 710 on its surface to rotate, and the lower bevel gear 710 drives the rotating ring 709 to rotate, and at the same time, the rotating ring 709 and the reverse stirring plate 711 below rotate, and the intermediate raw material is stirred inside and outside and in different directions by the reverse stirring plate 711 and the stirring blade 705, so as to achieve a sufficient stirring reaction of the pharmaceutical intermediate raw material; The quantitative conveying device 9 includes a liquid storage chamber 901, the outer surface of the liquid storage chamber 901 is fixedly connected to a sealing block 902, the upper surface of the sealing block 902 is provided with an air pipe joint 903, the sealing block 902 is provided with an air bag chamber 904 inside, the liquid storage chamber 901 is provided with a telescopic threaded rod 905, the surface of the telescopic threaded rod 905 is threadedly connected with a contraction extrusion plate 906, the inner wall surface of the liquid storage chamber 901 is provided with a one-way leather pad 907, an extrusion tube 908 is provided below the one-way leather pad 907, the air pipe joint 903 is externally connected to an air pump, the telescopic threaded rod 905 forms a telescopic structure inside the liquid storage chamber 901 through the extension and contraction of the air bag chamber 904, the contraction extrusion plate 906 forms a rotating structure on the surface of the telescopic threaded rod 905, and the position on the surface of the telescopic threaded rod 905 is adjusted by rotation, and the liquid storage chamber 901 is connected to the forked discharge pipe 306 through the extrusion tube 908.

[0024] In this embodiment, when the discharge operation is performed, the airbag cavity 904 on the inner wall of the sealing block 902 is repeatedly inflated and deflated by an air pump, so that the airbag cavity 904 is repeatedly expanded and contracted, driving the telescopic threaded rod 905 and the contraction extrusion plate 906 to repeatedly expand and contract inside the liquid storage cavity 901, so that the intermediate liquid raw material inside the liquid storage cavity 901 is squeezed from the one-way leather pad 907 to the inside of the extrusion tube 908 under the extrusion of the contraction extrusion plate 906, and finally discharged through the forked discharge pipe 306 in the diversion inlet and outlet pipe 3. The position of the contraction extrusion plate 906 on the surface of the telescopic threaded rod 905 can be adjusted by rotating the contraction extrusion plate 906, thereby changing the extrusion stroke of the telescopic threaded rod 905 each time, thereby achieving the purpose of quantitative discharge of the pharmaceutical intermediate.

[0025] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A spare reactor for drug intermediate system, Features: The invention comprises a side equipment frame (1), a pipe clamp (2) is arranged on one side surface of the side equipment frame (1), a branch inlet and outlet pipe (3) is fixedly installed on one side surface of the side equipment frame (1) through the pipe clamp (2), a protective shell (4) is arranged on the surface of the branch inlet and outlet pipe (3), a branch pipe shell (5) is arranged on the lower end surface of the protective shell (4), a stirring motor (6) is arranged inside the branch pipe shell (5), a reaction inner kettle (7) is arranged below the stirring motor (6), two feeding pumps (8) are arranged on the lower end surface of the reaction inner kettle (7), and a quantitative conveying device (9) is arranged between the two feeding pumps (8) on the lower end surface of the reaction inner kettle (7).

2. A pharmaceutical intermediate preparation reactor according to claim 1, Features: The branch inlet and outlet pipes (3) are respectively installed on both sides of the side equipment frame (1), are of segmented design, and are respectively installed on the surface of the feed pump (8) and the quantitative conveying device (9), and the branch pipe housing (5) is arranged on the upper surface of the feed pump (8) and the quantitative conveying device (9).

3. A pharmaceutical intermediate preparation reactor according to claim 1, Features: The diverting inlet and outlet pipe (3) comprises a straight feed pipe (301), a feeding port (302) is arranged on the top surface of the straight feed pipe (301), a diverting fork pipe (303) is connected to the lower end of the straight feed pipe (301), a first feed connector (304) is arranged at one end of the diverting fork pipe (303), a second feed connector (305) is arranged at the other end of the diverting fork pipe (303), a forked discharge pipe (306) is arranged above the diverting fork pipe (303), a liquid discharge pump (307) is installed at the other end of the diverting discharge pipe (306), an upper liquid discharge pipe (308) is arranged above the liquid discharge pump (307), a sampling curved pipe (309) is arranged on one side surface of the upper liquid discharge pipe (308), and a sampling valve (310) is arranged at the connection position between the sampling curved pipe (309) and the upper liquid discharge pipe (308).

4. A pharmaceutical intermediate preparation reactor according to claim 3, Features: The first feed connector (304) and the second feed connector (305) are respectively interconnected with two feed pumps (8); one end of the bifurcated discharge pipe (306) is provided with two connectors, which are respectively interconnected with the quantitative conveying device (9).

5. A pharmaceutical intermediate preparation reactor according to claim 1, Features: The reaction inner kettle (7) comprises an upper outer tank body (701), the lower end surface of the upper outer tank body (701) is fixedly connected with a stirring reaction tank (702), the outer surface of the stirring reaction tank (702) is provided with a feeding pipe (703), a transmission rod (704) is provided inside the upper outer tank body (701), the lower end surface of the transmission rod (704) is provided with a stirring fan blade (705), the surface of the transmission rod (704) is transmission-connected with an upper bevel gear (706), one side of the upper bevel gear (706) is meshingly connected with a transmission gear (707), a sliding clamping groove (708) is provided at a connection position between the upper outer tank body (701) and the inner wall of the stirring reaction tank (702), a rotating ring (709) is slidably connected to the surface of the sliding clamping groove (708), a lower bevel gear (710) is fixedly connected to the upper surface of the rotating ring (709), and a reverse stirring plate (711) is fixedly connected to the lower end surface of the rotating ring (709).

6. A pharmaceutical intermediate preparation reactor according to claim 5, Features: The transmission rod (704) and the stirring motor (6) form a transmission structure, the stirring blades (705) form a stirring structure inside the stirring reaction tank (702) through the transmission rod (704), the lower bevel gear (710) is meshedly connected with the transmission gear (707), the reverse stirring plate (711) and the rotating ring (709) form a rotating structure on the surface of the sliding clamping groove (708) through the lower bevel gear (710), and the stirring blades (705) and the reverse stirring plate (711) rotate in the opposite direction, and the quantitative conveying device (9) is installed on the surface of the stirring reaction tank (702).

7. A pharmaceutical intermediate preparation reactor according to claim 1, Features: The quantitative delivery device (9) includes a liquid storage chamber (901), the outer surface of the liquid storage chamber (901) is fixedly connected to a sealing block (902), the upper surface of the sealing block (902) is provided with an air pipe joint (903), the sealing block (902) is provided with an air bag chamber (904) inside, the liquid storage chamber (901) is provided with a telescopic threaded pull rod (905), the surface of the telescopic threaded pull rod (905) is threadedly connected to a contraction extrusion plate (906), the inner wall surface of the liquid storage chamber (901) is provided with a one-way leather pad (907), and an extrusion tube (908) is provided below the one-way leather pad (907).

8. A pharmaceutical intermediate preparation reactor according to claim 7, Features: The air pipe joint (903) is externally connected to an air pump, and the telescopic threaded rod (905) forms a telescopic structure inside the liquid storage chamber (901) through the telescopic movement of the airbag chamber (904). The contraction extrusion plate (906) forms a rotating structure on the surface of the telescopic threaded rod (905), and its position on the surface of the telescopic threaded rod (905) is adjusted by rotation. The liquid storage chamber (901) is interconnected with the bifurcated discharge pipe (306) through an extrusion tube (908).

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