Continuous flow reactor

Abstract

The utility model provides a continuous flow reactor which comprises a reaction tank body, an auxiliary reaction component is arranged on the upper side in the reaction tank body, and a low-speed motor drives a primary transmission shaft and a secondary transmission shaft to rotate, so that the primary transmission shaft can drive a plurality of mixing support rods to rotate together through mixing rods; the second-stage transmission shaft can drive a first scraping plate and a second scraping plate to rotate together through a first linkage bent rod and a second linkage bent rod, and in the process, reaction liquid blocked by a first partition plate can be scraped by the rotating first scraping plate to be subjected to premixing reaction; a rotating second scraping plate scrapes the reaction liquid blocked by a second partition plate again to carry out a secondary premixing reaction, so that the reaction liquid flows and is mixed at the same time, and finally, the reaction liquid subjected to the premixing reaction is finally stirred and mixed by a rotating mixing rod and a mixing supporting rod; therefore, the reaction liquid is fully mixed and reacted.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical reaction equipment, in particular to a continuous flow reactor. Background Art

[0002] In the field of chemical and pharmaceutical technology, commonly used reactor equipment includes tubular reactors and kettle reactors, etc. Among them, kettle reactors are often equipped with stirring devices in the reactor to mix liquid reactants. The purity of the synthetic product and the reaction conversion rate are low, and the energy consumption and pollution are relatively serious. Since the chemical and pharmaceutical fields have high requirements on product purity, the commonly used reactor equipment is the continuous flow reactor.

[0003] A continuous flow reactor provided by publication number "CN216024876U" is provided with a fixing mechanism. During the use of the continuous flow reactor, the position of the extrusion plate can be adjusted using an extrusion rod, so that the position of the extrusion plate on the machine body is limited, and an anti-slip pad can be used to protect the outside of the machine body. At the same time, under the action of a supporting spring and a movable sleeve, the connecting rod supports one side of the extrusion plate, thereby avoiding the problem that the continuous flow reactor is inconvenient to install and disassemble.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] The continuous flow reactor relies only on a single stirring rod to stir the materials inside the body, and cannot fully react the reaction materials. Therefore, in actual use, a long period of stirring is required to make the materials react to the desired state. The reaction efficiency is low, and the practicality needs to be improved. Utility Model Content

[0006] The purpose of the utility model is to provide a continuous flow reactor to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A continuous flow reactor comprises a reaction tank body, a discharge valve, an introduction valve and a tank cover, wherein the tank cover is installed on the upper end surface of the reaction tank body, the discharge valve is installed on the lower side of the right end surface of the reaction tank body, a plurality of introduction valves are installed on the upper side of the annular side surface of the reaction tank body, an auxiliary reaction component is arranged on the upper side of the interior of the reaction tank body, and the auxiliary reaction component is used for pre-mixing reaction of the reaction liquid that continuously flows into the interior of the reaction tank body, and a stirring component is arranged on the lower side of the interior of the reaction tank body, and the stirring component is used for stirring reaction of the reaction liquid after the pre-mixing reaction again.

[0009] Preferably, the stirring assembly includes an inlet elbow, a pressure gauge, a temperature gauge, a mixing support rod, a mixing rod, a low-speed motor and a primary transmission shaft. A temperature gauge is installed on the left side of the annular side of the reaction tank body, a pressure gauge is installed above the temperature gauge, a low-speed motor is installed at the bottom of the reaction tank body, a primary transmission shaft is installed on the upper end of the low-speed motor, mixing rods are symmetrically arranged on the left and right sides of the annular side of the primary transmission shaft, mixing support rods are symmetrically arranged on the upper and lower sides of the annular side of the mixing rod, and an inlet elbow is installed at the outlet of the inlet valve.

[0010] Preferably, the auxiliary reaction component includes a secondary transmission shaft, a guide tube, a first partition, a first scraper, a first linkage bent rod and a first guide through hole, the upper end of the primary transmission shaft is connected to the secondary transmission shaft, the right side of the annular side of the secondary transmission shaft is provided with a first linkage bent rod, the lower end of the first linkage bent rod is provided with a first scraper, a guide tube is installed on the upper side of the interior of the reaction tank body, the upper side of the guide tube is fixedly connected with a first partition, and a plurality of first guide through holes are opened on the left side of the interior of the first partition.

[0011] Preferably, a second partition is fixedly connected to the lower side of the interior of the guide tube, and a plurality of second guide holes are opened on the right side of the interior of the second partition.

[0012] Preferably, a second linkage bent rod is arranged on the left side of the annular side surface of the secondary transmission shaft, a second scraper is arranged at the lower end of the second linkage bent rod, and the second scraper has the same specifications as the first scraper.

[0013] Preferably, the annular side surface of the guide tube is fixedly connected with a support rod, and a mechanical seal is installed in the middle position of the bottom of the reaction tank body, and the mechanical seal matches the primary transmission shaft.

[0014] Preferably, the upper end surface of the tank cover and the front side of the annular side surface of the reaction tank body are both provided with observation windows, a safety valve is installed on the right side of the annular side surface of the reaction tank body, and the tank cover is a detachable structure.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. By making the low-speed motor drive the secondary transmission shaft to rotate synchronously through the primary transmission shaft, the secondary transmission shaft can drive the first scraper and the second scraper to rotate together through the first linkage bent rod and the second linkage bent rod. In this process, the reaction liquid blocked by the first partition will be scraped by the rotating first scraper to perform a pre-mixing reaction. When the reaction liquid is scraped to the area in the multiple first guide holes, the reaction liquid will flow downward to the upper surface of the second partition. At this time, the rotating second scraper will scrape the reaction liquid blocked by the second partition again to perform a secondary pre-mixing reaction, so as to perform a mixing reaction while the reaction liquid flows;

[0017] 2. By driving the primary transmission shaft to rotate with a low-speed motor, the primary transmission shaft can drive multiple mixing support rods to rotate together through the mixing rod, so that the rotating mixing rod and the mixing support rod can stir and mix the reaction liquid after the premixing reaction again, thereby fully mixing the reaction liquid, thereby improving the reaction efficiency of the reaction tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a front cross-sectional view of the stirring component and the auxiliary reaction component in the utility model;

[0020] Figure 3 It is a structural diagram of the stirring component and the auxiliary reaction component in the utility model;

[0021] Figure 4 It is a cross-sectional view of the guide tube of the utility model;

[0022] Figure 5 It is a structural diagram of the primary transmission shaft and the secondary transmission shaft in the utility model.

[0023] In the figure: 1. reaction tank body; 11. safety valve; 12. mechanical seal; 2. stirring assembly; 21. introduction elbow; 22. pressure gauge; 23. temperature gauge; 24. mixing support rod; 25. mixing rod; 26. low-speed motor; 27. primary transmission shaft; 3. discharge valve; 4. auxiliary reaction assembly; 41. secondary transmission shaft; 42. guide tube; 421. support rod; 43. second partition; 44. first partition; 45. first scraper; 46. first linkage bent rod; 47. second linkage bent rod; 48. second scraper; 49. first guide through hole; 411. second guide through hole; 5. introduction valve; 6. tank cover; 61. observation window. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A continuous flow reactor comprises a reaction tank body 1, a discharge valve 3, an introduction valve 5 and a tank cover 6. The upper end surface of the reaction tank body 1 is installed with the tank cover 6, and the tank cover 6 is a detachable structure. The detachable tank cover 6 can not only seal the upper end of the reaction tank body 1, but also facilitate the later staff to enter the reaction tank body 1 for maintenance. The discharge valve 3 is installed on the lower side of the right end surface of the reaction tank body 1. The outlet of the discharge valve 3 is connected to the inlet of the external reaction liquid temporary storage tank through a pipeline. When the discharge valve 3 is opened, the reaction liquid after stirring reaction in the reaction tank body 1 can be discharged. A plurality of introduction valves 5 are installed on the upper side of the annular side surface of the reaction tank body 1. The plurality of introduction valves 5 The inlets are connected to the outlets of multiple different types of external reaction liquid storage tanks through pipelines. When the multiple inlet valves 5 are opened, it is convenient for the box reaction tank body 1 to introduce the required amount of different types of reaction liquids. The upper end surface of the tank cover 6 and the front side of the annular side of the reaction tank body 1 are provided with observation windows 61. The observation window 61 is convenient for the staff to observe the internal situation of the reaction tank body 1 in real time. A safety valve 11 is installed on the right side of the annular side of the reaction tank body 1. The outlet of the safety valve 11 is connected to the inlet of the external exhaust gas treatment device through a pipeline. The safety valve 11 can automatically open to release pressure to the outside when the pressure inside the reaction tank body 1 rises to more than a specified value, so as to avoid the danger caused by excessive pressure inside the reaction tank body 1.

[0028] An auxiliary reaction component 4 is arranged on the upper side of the reaction tank body 1, and the auxiliary reaction component 4 is used to pre-mix the reaction liquid that continuously flows into the reaction tank body 1. A stirring component 2 is arranged on the lower side of the reaction tank body 1, and the stirring component 2 is used to re-stir the reaction liquid after the pre-mixing reaction.

[0029] The stirring assembly 2 includes an inlet elbow 21, a pressure gauge 22, a thermometer 23, a mixing support rod 24, a mixing rod 25, a low-speed motor 26 and a primary transmission shaft 27. A thermometer 23 is installed on the left side of the annular side of the reaction tank body 1. The thermometer 23 is convenient for the staff to observe the internal temperature value of the reaction tank body 1 in real time. A pressure gauge 22 is installed above the thermometer 23. The pressure gauge 22 is convenient for the staff to observe the internal pressure value of the reaction tank body 1 in real time. A low-speed motor 26 is installed at the bottom of the reaction tank body 1. The low-speed motor 26 is connected to an external control switch through a wire. The low-speed motor 26 can drive the primary transmission shaft 27 to rotate at a low speed. A primary transmission shaft 27 is installed on the upper end of the low-speed motor 26. The primary transmission shaft 27 can drive the mixing rod 25 and the secondary transmission shaft 41 to rotate at a low speed.

[0030] The mixing rods 25 are symmetrically arranged on the left and right sides of the annular side of the primary transmission shaft 27. The mixing rods 25 are connected to the mixing support rods 24 and the primary transmission shaft 27 by welding. The mixing rods 25 will drive the mixing support rods 24 to rotate. The mixing support rods 24 are symmetrically arranged on the upper and lower sides of the annular side of the mixing rod 25. There are multiple mixing support rods 24, and the multiple mixing support rods 24 have the same specifications. The multiple mixing support rods 24 can further improve the mixing range of the mixing rod 25. The outlet of the inlet valve 5 is installed with an inlet elbow 21, and the inlet elbow 21 is installed with multiple, The multiple inlet elbows 21 have the same specifications, and the number of the inlet elbows 21 is the same as the number of the inlet valves 5. The inlet elbows 21 are connected to the reaction tank body 1 by welding. The multiple inlet elbows 21 can centrally introduce different reaction liquids exported by the multiple inlet valves 5 into the guide tube 42. A mechanical seal 12 is installed in the middle position of the bottom of the reaction tank body 1, and the mechanical seal 12 matches the primary transmission shaft 27. The mechanical seal 12 makes the primary transmission shaft 27 and the reaction tank body 1 more tightly sealed to prevent the reaction liquid inside the reaction tank body 1 from leaking to the outside.

[0031] Embodiment 2:

[0032] On the basis of the first embodiment, in this embodiment, the low-speed motor 26 drives the secondary transmission shaft 41 to rotate synchronously through the primary transmission shaft 27, so that the secondary transmission shaft 41 can drive the first scraper 45 and the second scraper 48 to rotate together through the first linkage bent rod 46 and the second linkage bent rod 47. During this process, the reaction liquid blocked by the first partition 44 will be scraped by the rotating first scraper 45 for pre-mixing reaction, and the rotating second scraper 48 will scrape the reaction liquid blocked by the second partition 43 again for a secondary pre-mixing reaction, so as to mix the reaction liquid while flowing.

[0033] The auxiliary reaction assembly 4 includes a secondary transmission shaft 41, a guide tube 42, a first baffle 44, a first scraper 45, a first linkage bent rod 46 and a first guide through hole 49. The upper end of the primary transmission shaft 27 is connected to the secondary transmission shaft 41. The secondary transmission shaft 41 is connected to the primary transmission shaft 27, the first linkage bent rod 46 and the second linkage bent rod 47 by welding. The secondary transmission shaft 41 can drive the first linkage bent rod 46 and the second linkage bent rod 47 to rotate at a low speed. The right side of the annular side of the secondary transmission shaft 41 is provided with a first linkage bent rod 46. The first linkage bent rod 46 is provided with two groups, and the two groups have the same specifications. The first linkage bent rod 46 is connected to the first scraper 45 by welding. The first linkage bent rod 46 is connected to the first scraper 45 by welding. The rod 46 can drive the first scraper 45 to rotate. The first scraper 45 is arranged at the lower end of the first linkage bent rod 46. There are two groups of first scrapers 45, and the specifications of the two groups of first scrapers 45 are the same. The first scraper 45 can scrape different types of reaction liquids remaining on the upper end surface of the first partition 44 into multiple first guide holes 49, so that it reacts while flowing. A guide tube 42 is installed on the upper side of the reaction tank body 1. The guide tube 42 is connected to the first partition 44, the second partition 43 and the support rod 421 by welding. The guide tube 42 can not only support the first partition 44 and the second partition 43, but also prevent the reaction liquid at the upper end of the first partition 44 and the second partition 43 from flowing out to the surroundings.

[0034] A first baffle 44 is fixedly connected to the upper side of the guide tube 42. Two groups of the first baffles 44 are fixedly connected, and the specifications of the two groups of first baffles 44 are the same. The first baffle 44 can block the reaction liquid flowing into the guide tube 42 once. A plurality of first guide holes 49 are opened on the left side of the first baffle 44. The specifications of the plurality of first guide holes 49 are the same. The plurality of first guide holes 49 facilitate the downward flow of the reaction liquid on the left side of the upper end surface of the first baffle 44. A second baffle 43 is fixedly connected to the lower side of the guide tube 42. Two groups of the second baffles 43 are fixedly connected, and the specifications of the two groups of second baffles 43 are the same. The second baffle 43 can block the reaction liquid flowing into the guide tube 42 for a second time. A plurality of second guide holes 411 are opened on the right side of the second baffle 43. The specifications of the plurality of second guide holes 411 are the same. 411 facilitates the downward flow of the reaction liquid on the right side of the upper end face of the second partition 43. A second linkage bent rod 47 is arranged on the left side of the annular side face of the secondary transmission shaft 41. Two groups of second linkage bent rods 47 are arranged, and the two groups have the same specifications. The second linkage bent rod 47 is connected to the second scraper 48 by welding. The second linkage bent rod 47 can drive the second scraper 48 to rotate. A second scraper 48 is arranged at the lower end of the second linkage bent rod 47, and the second scraper 48 has the same specifications as the first scraper 45. Two groups of second scrapers 48 are arranged, and the two groups of second scrapers 48 have the same specifications. The second scraper 48 can scrape different types of reaction liquids remaining on the upper end face of the second partition 43 into multiple second guide holes 411, so that it reacts while flowing. The annular side face of the guide tube 42 is fixedly connected to a support rod 421, and the support rod 421 can support and fix the guide tube 42.

[0035] Working principle: the staff first starts the low-speed motor 26, so that the low-speed motor 26 drives the primary transmission shaft 27 to rotate, and the primary transmission shaft 27 will drive the multiple mixing support rods 24 to rotate together through the mixing rod 25. At the same time, the primary transmission shaft 27 will also drive the secondary transmission shaft 41 to rotate synchronously, so that the secondary transmission shaft 41 drives the two groups of first scrapers 45 and second scrapers 48 to rotate together through the two groups of first linkage bent rods 46 and second linkage bent rods 47. Then the staff can open the multiple introduction valves 5 respectively to introduce different types of required amounts of reaction liquid into the reaction tank body 1; in this process, the multiple introduction elbows 21 will centrally introduce the different reaction liquids exported by the multiple introduction valves 5 into the guide tube 42, and a part of the reaction liquid flowing downward into the guide tube 42 will continue to flow downward continuously to the upper end surface of the second partition 43 through the multiple first guide holes 49, and the remaining part of the reaction liquid blocked by the first partition 44 will be scraped by the rotating first scraper 45 for pre-mixing reaction. When the reaction liquid is scraped When the reaction liquid moves to the area in the plurality of first guide holes 49, the reaction liquid will flow downward to the upper end surface of the second partition 43. At this time, the rotating second scraper 48 will scrape the reaction liquid blocked by the second partition 43 again to perform a secondary pre-mixing reaction. When the reaction liquid is scraped to the area in the plurality of second guide holes 411, the reaction liquid will continue to flow downward to the upper end surface of the next group of first partitions 44 for a third pre-mixing, and the reaction liquid pre-mixed three times will flow downward to the upper end surface of the next group of second partitions 43 for a fourth pre-mixing, so as to perform a mixing reaction while the reaction liquid flows; the reaction liquid pre-mixed for the fourth time will flow downward to the rotating mixing rod 25 and mixing support rod 24 at the lower side of the reaction tank body 1 for the final stirring and mixing, so as to fully mix the reaction liquid. During this process, the temperature gauge 23 will display the temperature inside the reaction tank body 1 in real time, and the pressure gauge 22 will display the pressure value inside the reaction tank body 1 in real time, and the liquid level of the reaction liquid inside the reaction tank body 1 cannot exceed the highest liquid level line ( Figure 2 When the reaction liquid reacts to the required state and time, the staff first turns off the low-speed motor 26 and then opens the discharge valve 3.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous flow reactor, comprising a reaction tank body (1), a discharge valve (3), an inlet valve (5) and a tank cover (6), characterized in that: The upper end surface of the reaction tank body (1) is provided with a tank cover (6), the lower side of the right end surface of the reaction tank body (1) is provided with a discharge valve (3), the upper side of the annular side surface of the reaction tank body (1) is provided with a plurality of introduction valves (5), the upper side of the interior of the reaction tank body (1) is provided with an auxiliary reaction component (4), and the auxiliary reaction component (4) is used for pre-mixing the reaction liquid that continuously flows into the interior of the reaction tank body (1), and the lower side of the interior of the reaction tank body (1) is provided with a stirring component (2), and the stirring component (2) is used for re-stirring the reaction liquid after the pre-mixing reaction.

2. A continuous flow reactor according to claim 1, characterized in that: The stirring assembly (2) comprises an inlet elbow (21), a pressure gauge (22), a temperature gauge (23), a mixing support rod (24), a mixing rod (25), a low-speed motor (26) and a primary transmission shaft (27); the temperature gauge (23) is installed on the left side of the annular side of the reaction tank body (1); the pressure gauge (22) is installed above the temperature gauge (23); the low-speed motor (26) is installed at the bottom of the reaction tank body (1); the primary transmission shaft (27) is installed on the upper end of the low-speed motor (26); the mixing rods (25) are symmetrically arranged on the left and right sides of the annular side of the primary transmission shaft (27); the mixing support rods (24) are symmetrically arranged on the upper and lower sides of the annular side of the mixing rod (25); and the outlet of the inlet valve (5) is installed with an inlet elbow (21).

3. A continuous flow reactor according to claim 2, characterized in that: The auxiliary reaction assembly (4) comprises a secondary transmission shaft (41), a guide drop tube (42), a first baffle (44), a first scraper (45), a first linkage bent rod (46) and a first guide drop through hole (49); the upper end of the primary transmission shaft (27) is connected to the secondary transmission shaft (41); the right side of the annular side of the secondary transmission shaft (41) is provided with a first linkage bent rod (46); the lower end of the first linkage bent rod (46) is provided with a first scraper (45); the upper side of the reaction tank body (1) is provided with a guide drop tube (42); the upper side of the guide drop tube (42) is fixedly connected with a first baffle (44); and a plurality of first guide drop through holes (49) are opened on the left side of the first baffle (44).

4. A continuous flow reactor according to claim 3, characterized in that: A second partition plate (43) is fixedly connected to the lower side of the guide tube (42), and a plurality of second guide holes (411) are provided on the right side of the second partition plate (43).

5. A continuous flow reactor according to claim 3, characterized in that: A second linkage bent rod (47) is arranged on the left side of the annular side surface of the secondary transmission shaft (41), and a second scraper (48) is arranged at the lower end of the second linkage bent rod (47), and the second scraper (48) has the same specifications as the first scraper (45).

6. A continuous flow reactor according to claim 3, characterized in that: The annular side surface of the guide tube (42) is fixedly connected to a support rod (421), and a mechanical seal (12) is installed at the middle position of the bottom of the reaction tank body (1), and the mechanical seal (12) matches the primary transmission shaft (27).

7. A continuous flow reactor according to claim 1, characterized in that: The upper end surface of the tank cover (6) and the front side of the annular side of the reaction tank body (1) are both provided with observation windows (61), a safety valve (11) is installed on the right side of the annular side of the reaction tank body (1), and the tank cover (6) is a detachable structure.

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