Post-treatment filtering device

Abstract

The invention relates to the technical field of chemical synthesis, in particular to a post-treatment filtering device. The post-treatment filtering device comprises a mounting rack provided with a control module; the filter module, the reaction bottle mounting position and the multi-channel switching injection module are integrally arranged on the mounting rack and electrically connected with the control module, and the filter module comprises a filter bottle mounting position for placing a filter bottle; the multi-channel switching injection module comprises a multi-channel connecting pipeline which is at least connected with the filter bottle mounting position and the reaction bottle mounting position respectively, a multi-channel switching valve which is in switching communication with each connecting channel of the multi-channel connecting pipeline, and an injection pump which is connected with the multi-channel switching valve, and a temporary storage cavity is formed in the injection pump; and a public connecting channel communicated with the temporary storage cavity is arranged in the multi-channel switching valve. Therefore, the technical problems that an experimental device is complex to build, long in building time, large in occupied laboratory space, low in operation efficiency, large in repetitive workload, poor in control precision, low in experimental stability and the like are solved.

Description

Technical Field

[0001] This application relates to the field of chemical synthesis technology, and in particular to a post-treatment filtration device. Background Technology

[0002] Chemical synthesis experiments usually require post-processing steps, among which filtration is a common and critical step in the post-processing of chemical synthesis.

[0003] Currently, the laboratory mainly uses manual methods for filtration, relying on manually constructed equipment such as Buchner funnels, suction flasks, and vacuum pumps. However, this method has many problems: 1. The experimental setup is cumbersome, requiring the temporary assembly of multiple components, resulting in long setup times, large laboratory space requirements, and poor flexibility; 2. Manual operation is inefficient, involves a large amount of repetitive work, and has a long experimental cycle, making it time-consuming and labor-intensive; 3. The process control precision is poor, the operation process relies on personnel experience, is difficult to quantify and reproduce, the results have poor repeatability, the experimental stability is insufficient, and it is difficult to achieve precise flow control; 4. It cannot achieve continuous, automated, and repeatable operation, cannot operate unattended for long periods, and limits the development of high-throughput experiments. Summary of the Invention

[0004] The purpose of this application is to provide a post-processing filtration device to solve the technical problems of existing technologies, such as cumbersome experimental setup, long setup time, large laboratory space occupation, low operating efficiency, large repetitive workload, poor control precision, poor result repeatability, low experimental stability, and inability to operate unattended for a long time.

[0005] This application provides a post-treatment filtration device, comprising: The mounting rack houses the control module; and The filter module, reaction flask mounting position, and multi-channel switching injection module are integrated and mounted on the mounting frame and electrically connected to the control module. The filter module includes a filter flask mounting position for placing the filter flask. The multi-channel switching injection module includes at least a multi-channel connecting pipeline connected to the filter bottle mounting position and the reaction bottle mounting position respectively, a multi-channel switching valve that switches between each connecting channel of the multi-channel connecting pipeline, and an injection pump connected to the multi-channel switching valve. The injection pump has a temporary storage chamber, and the multi-channel switching valve has a common connecting channel that communicates with the temporary storage chamber.

[0006] Furthermore, the injection pump is electrically connected to the control module. The injection pump is a high-precision injection pump, and the single temporary storage capacity in its temporary storage chamber does not exceed the preset standard capacity. When the liquid volume exceeds the preset standard capacity, the liquid is automatically pipetted in batches.

[0007] Further, the filter module further comprises a stirring paddle arranged in the filter bottle, and a closed-loop stepping motor connected with the stirring paddle.

[0008] Further, the closed-loop stepping motor is connected with the stirring paddle through a synchronous wheel and a synchronous belt. The synchronous wheel comprises a driving wheel coaxially connected with the output shaft of the closed-loop stepping motor, and a driven wheel coaxially connected with the top of the stirring paddle, and the synchronous belt is sleeved on the driving wheel and the driven wheel.

[0009] Further, the top end of the stirring paddle is equipped with an outer hexagon bushing, the driven wheel is provided with an inner hexagon shaft sleeve, and the outer hexagon bushing is sleeved and connected outside the inner hexagon shaft sleeve; and / or The two ends of the inner hexagon shaft sleeve provided on the driven wheel are provided with deep groove ball bearings; and / or The synchronous wheel adopts a synchronous wheel with a 3mm pitch and a 1:1 transmission ratio.

[0010] Further, the reaction bottle mounting position and the filter bottle mounting position are arranged side by side on one side of the mounting rack, the multi-channel switching valve and the high-precision injection pump are arranged on the other side of the mounting rack, the closed-loop stepping motor is arranged above the multi-channel switching valve, and the synchronous wheel and the synchronous belt are arranged on the top of the mounting rack.

[0011] Further, the top of the mounting rack is further provided with four fluorine wear plate joints corresponding to each of the connection channels of the multi-channel connection pipeline; and / or The high-precision injection pump, the multi-channel switching valve, the multi-channel connection pipeline, the filter bottle, the reaction bottle, and each connection pipeline and each connection joint are made of PTFE corrosion-resistant material.

[0012] Further, the bottom of the filter bottle is conical; and / or The filter bottle mounting position and / or the reaction bottle mounting position are provided with quick buckles for mounting the filter bottle or the reaction bottle.

[0013] Further, the multi-channel connection pipeline further comprises a good solvent connection channel connected with a good solvent bottle and a poor solvent connection channel connected with a poor solvent bottle; and / or A plurality of post-processing filter devices are arranged in sequence on the display rack.

[0014] Further, the post-processing filter device further comprises a liquid discharge module, which comprises a three-way electromagnetic valve connected with the liquid discharge port of the filter bottle, and a waste liquid discharge pipeline and a recycling pipeline connected with the three-way electromagnetic valve. The waste liquid discharge pipeline is further provided with a two-way electromagnetic valve for preventing backflow.

[0015] Compared with the prior art, the post-treatment filtering device provided by the application is applied to the filtering operation step in the post-treatment process of chemical synthesis, and the post-treatment filtering device comprises a mounting rack provided with a control module, a filtering module integrated on the mounting rack and electrically connected with the control module, a reaction bottle mounting position for placing a reaction bottle, and a multi-channel switching injection module, the filtering module is provided with a filtering bottle mounting position for placing a filtering bottle; and the multi-channel switching injection module comprises a multi-channel connecting pipeline, a multi-channel switching valve capable of switching communication with each connecting channel of the multi-channel connecting pipeline, and an injection pump connected with the multi-channel switching valve, the injection pump has a temporary storage cavity therein, the multi-channel switching valve has a common connecting channel in communication with the temporary storage cavity, and each connecting channel in the multi-channel connecting pipeline comprises at least two connecting channels connected with the filtering bottle mounting position and the reaction bottle mounting position, respectively.

[0016] When starting operation, the filtering bottle and the reaction bottle can be installed in position on the filtering bottle mounting position and the reaction bottle mounting position, respectively, and the connecting pipeline on the filtering bottle mounting position in communication with the filtering bottle is connected with one of the connecting channels of the multi-channel connecting pipeline of the multi-channel switching injection module, which is recorded as a filtering bottle connecting channel, and similarly, the connecting pipeline on the reaction bottle mounting position in communication with the reaction bottle is connected with another connecting channel of the multi-channel connecting pipeline, which is recorded as a reaction bottle connecting channel, when other liquid channels need to be connected, they can also be connected with other connecting channels of the multi-channel connecting pipeline in this way; then the multi-channel switching valve can be driven to move to the connecting channel of the multi-channel connecting pipeline corresponding to the liquid taking position (such as the reaction bottle connecting channel) and docked, and the injection pump is started to provide pumping power to take liquid, the liquid flows through the common connecting channel in the multi-channel switching valve to the temporary storage cavity in the injection pump for temporary storage, then the multi-channel switching valve is driven to switch and move to the connecting channel of the multi-channel connecting pipeline corresponding to the liquid injection position (such as the filtering bottle connecting channel) and docked, and the injection pump is started to deliver the liquid temporarily stored in the temporary storage cavity to the filtering bottle, and so on.

[0017] On one hand, through the above operation mode, the multi-channel liquid taking and injecting can realize full-automatic operation, and the automaticity is high, the working efficiency is high, and the multi-channel switching valve and the injection pump can be electrically connected with the control module, the control module can control the repetitive operation instruction of the multi-channel switching injection module for taking and injecting liquid, the repeatability is high, the moving position and the extraction amount can be accurately controlled, the control precision is high, the experimental result stability is high, the continuous, automatic and repetitive operation can be realized, and the long-term unattended operation can be realized. On the other hand, the modules (such as the control module, the filtering module, the reaction bottle mounting position and the multi-channel switching injection module) are integrally arranged on the mounting rack, the integration and compactness are high, the space occupied in the laboratory is greatly reduced, and the time and labor are saved, and the flexibility is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed to be used in the description of the specific embodiments or prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor.

[0019] Figure 1 The structural schematic diagram of the post-processing filtering device provided by the embodiment of the present application is shown in the figure. Figure 2 The structural schematic diagram of the post-processing filtering device provided by the embodiment of the present application is shown in the figure. Figure 3 The sectional view of the post-processing filtering device provided by the embodiment of the present application is shown in the figure. Figure 4 The structural schematic diagram of the post-processing filtering device provided by the embodiment of the present application is shown in the figure.

[0020] Reference signs: 100 - post-processing filtering device; 10 - mounting rack; 20 - filter bottle mounting position; 21 - filter bottle; 211 - conical bottom; 22 - stirring paddle; 23 - outer hexagonal bushing; 30 - reaction bottle mounting position; 31 - reaction bottle; 40 - multi-channel switching valve; 41 - four-fluorine penetrating plate joint; 50 - high-precision injection pump; 61 - closed-loop stepping motor; 62 - driving wheel; 63 - driven wheel; 631 - inner hexagonal shaft sleeve; 632 - deep groove ball bearing; 64 - synchronous belt; 71 - three-way electromagnetic valve; 72 - two-way electromagnetic valve; 80 - through-hole terminal; 200 - display stand. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0023] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0024] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0026] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following examples and features in the examples can be combined with each other without conflict.

[0028] As shown in Figures 1 to 3 The embodiment of the present application provides a post-processing filtering device 100 applied to the filtering operation step in the post-processing process of chemical synthesis, which comprises a mounting rack 10 provided with a control module, a filtering module integrated on the mounting rack 10 and electrically connected with the control module, a reaction bottle mounting position 30 for placing a reaction bottle 31, and a multi-channel switching injection module, and the filtering module is provided with a filtering bottle mounting position 20 for placing a filtering bottle 21.

[0029] And the multi-channel switching injection module can specifically include a multi-channel connecting pipeline, a multi-channel switching valve 40 capable of switching communication with each connecting channel of the multi-channel connecting pipeline, and an injection pump connected with the multi-channel switching valve 40, and the injection pump has a temporary storage cavity, the multi-channel switching valve 40 has a common connecting channel communicated with the temporary storage cavity, and the multi-channel connecting pipeline includes a plurality of connecting channels, at least two connecting channels connected with the filtering bottle mounting position 20 and the reaction bottle mounting position 30 respectively, which can be respectively marked as filtering bottle connecting channel and reaction bottle connecting channel, or other marking methods can be used, such as No. 1 connecting channel and No. 2 connecting channel. The plurality of connecting channels can further include a good solvent connecting channel communicated with a good solvent bottle, and a poor solvent connecting channel communicated with a poor solvent bottle. According to the experimental requirements, each connecting channel in the multi-channel connecting pipeline is communicated with each liquid container which needs to take liquid (such as reaction bottle 31, good solvent bottle, poor solvent bottle, etc.) and needs to transfer liquid (such as filtering bottle 21).

[0030] When starting operation, first install the filter bottle 21 and reaction bottle 31 in the filter bottle mounting position 20 and reaction bottle mounting position 30 respectively. Then connect the connecting pipe on the filter bottle mounting position 20, which is connected to the inside of the filter bottle 21, to one of the connecting channels of the multi-channel connecting pipe of the multi-channel switching injection module. This can be referred to as the filter bottle connecting channel or connecting channel 1, etc. Similarly, the connecting pipe on the reaction bottle mounting position 30, which is connected to the inside of the reaction bottle 31, can be connected to another connecting channel of the multi-channel connecting pipe. This can be referred to as the reaction bottle connecting channel or connecting channel 2, etc. When it is necessary to connect other liquid passages, it can also be connected to other connecting channels of the multi-channel connecting pipe in this way.

[0031] Then, the multi-channel switching valve 40 can be driven to move to the corresponding connection channel of the multi-channel connecting pipeline that needs to be taken (such as the reaction bottle connection channel) and docked. At the same time, the syringe pump is started to provide the extraction power to take the liquid, which flows through the common connection channel in the multi-channel switching valve 40 to the temporary storage chamber in the syringe pump for temporary storage. Then, the multi-channel switching valve 40 is driven again to switch and move to the corresponding connection channel of the multi-channel connecting pipeline that needs to be injected (such as the filter bottle connection channel) and docked. The syringe pump is started to deliver the liquid temporarily stored in its temporary storage chamber out and into the filter bottle 21. Other liquid taking and infusion processes are carried out in the same way.

[0032] This setup offers several advantages. First, through the aforementioned operating methods, multi-channel liquid extraction and injection can be fully automated, boasting high automation and efficiency. Furthermore, the multi-channel switching valve 40 and the injection pump can be electrically connected to the control module. The control module can then control the multi-channel switching injection module to perform repetitive liquid extraction and injection commands, ensuring high repeatability. It also allows for precise control of movement position and extraction volume, resulting in high control accuracy, strong experimental result stability, and enabling continuous, automated, and repetitive operation, as well as long-term unattended operation. Second, the integration of various modules (such as the control module, filtration module, reaction flask mounting position 30, and multi-channel switching injection module) onto a single mounting frame 10 results in high integration and compactness, significantly reducing the space occupied in the laboratory. Moreover, it eliminates the need for repeated rebuilding, saving time and effort and offering high flexibility.

[0033] A preferred embodiment is, as follows: Figure 1 and Figure 2 As shown, the aforementioned syringe pump can specifically be a high-precision syringe pump 50, and the high-precision syringe pump 50 can be electrically connected to the control module. The control module can preset a standard capacity value so that the single temporary storage capacity in the temporary storage chamber does not exceed the preset standard capacity, thereby improving the pipetting and delivery accuracy. Specifically, the preset standard capacity can be 25 mL, and the error accuracy can be controlled to be less than or equal to 1%.

[0034] When the pipetting volume exceeds the preset standard capacity, the control module can be pre-set to automatically complete pipetting in batches, and the single volume does not exceed the preset standard capacity, thereby realizing high-precision quantitative extraction and delivery. The delivery speed and other parameters of the high-precision syringe pump 50 can also be set and adjusted by the control module.

[0035] Another preferred embodiment is as shown in Figures 1 to 3 The filter module provided by the embodiment of the application can further include a stirring paddle 22 placed in the filter bottle 21 and a closed-loop stepping motor 61 drivingly connected with the stirring paddle 22, and the closed-loop stepping motor 61 can provide accurate stirring speed.

[0036] In a specific embodiment, the closed-loop stepping motor 61 is drivingly connected with the stirring paddle 22 through a synchronous wheel and a synchronous belt 64. The synchronous wheel can include a driving wheel 62 coaxially connected with an output shaft of the closed-loop stepping motor 61 and a driven wheel 63 coaxially connected with a top of the stirring paddle 22, and the synchronous belt 64 is sleeved on the driving wheel 62 and the driven wheel 63. This transmission mode is reliable and has high transmission accuracy.

[0037] Preferably, the synchronous wheel is a synchronous wheel with a 3mm pitch and a 1:1 transmission ratio specification, so as to more accurately transmit the actual rotating speed of the closed-loop stepping motor 61 and ensure that the actual rotating speed of the closed-loop stepping motor 61 is accurately transmitted to the stirring paddle 22.

[0038] Further, as shown in Figure 3 The top end of the stirring paddle 22 is equipped with an outer hexagonal bushing 23, and the driven wheel 63 is provided with an inner hexagonal shaft sleeve 631. The outer hexagonal bushing 23 is sleeved and connected to the outer hexagonal shaft sleeve 631 to realize power transmission. The power transmission is reliable and can be disassembled without tools.

[0039] Further, in order to achieve more stable transmission, the inner hexagonal shaft sleeve 631 provided on the driven wheel 63 can be provided with deep groove ball bearings 632 at both ends, which are used to support the stirring paddle 22, so as to ensure stable rotation and reduce vibration and wear.

[0040] In a specific embodiment, as shown in Figure 1 and Figure 2 The reaction bottle mounting position 30 and the filter bottle mounting position 20 can be arranged side by side on one side of the mounting rack 10, and the multi-channel switching valve 40 and the high-precision syringe pump 50 can be arranged on the other side of the mounting rack 10. Meanwhile, the closed-loop stepping motor 61 can be arranged above the multi-channel switching valve 40, and the synchronous wheel and the synchronous belt 64 can be arranged on the top of the mounting rack 10. In this way, the functional modules are reasonably distributed and arranged compactly, thereby further reducing the floor area and the occupied space, and making the overall device more portable and flexible.

[0041] A preferred embodiment is, as follows: Figure 2 As shown, the top of the mounting frame 10 may also be provided with PTFE through-plate connectors 41 that correspond one-to-one with each connection channel of the aforementioned multi-channel connection pipeline, facilitating direct connection by operators. Similarly, the top of the mounting frame 10 may be provided with through-plate terminals 80 that connect to the control module, also facilitating direct connection by operators.

[0042] Another preferred embodiment is that the high-precision injection pump 50, the multi-channel switching valve 40, the multi-channel connecting pipeline, the filter bottle 21, the reaction bottle 31, and each connecting pipeline and each connecting joint are preferably made of PTFE corrosion-resistant material to improve the corrosion resistance of the overall structure and extend the service life of the overall structure.

[0043] One specific embodiment is, as follows: Figure 3 As shown, the bottom of the filter bottle 21 is preferably set as a cone shape, with the bottom 211 being wider at the top and narrower at the bottom, which facilitates the complete discharge of liquid from the filter bottle 21.

[0044] In an optional embodiment, in order to improve the installation stability of the filter bottle 21 and the reaction bottle 31, both the filter bottle mounting position 20 and the reaction bottle mounting position 30 can be equipped with a fixing sleeve, in which the filter bottle 21 and the reaction bottle 31 can be clamped.

[0045] Another optional embodiment is that both the filter bottle mounting position 20 and the reaction bottle mounting position 30 can be equipped with quick-release clips to enable quick installation and easy disassembly and replacement of the filter bottle 21 and the reaction bottle 31.

[0046] In addition, such as Figure 1 and Figure 2 As shown in the embodiment of this application, the post-treatment filtration device 100 may further include a drainage module. Specifically, the drainage module may include a three-way solenoid valve 71 connected to the drainage port of the filter bottle 21, and a waste liquid discharge pipeline and a recycling pipeline connected to the three-way solenoid valve 71. The three-way solenoid valve 71 controls the flow direction of the filtrate, selecting whether it is recycled back into the reaction system or discharged as waste liquid. By standardizing the drainage process, the risk of cross-contamination or corrosion can be effectively eliminated, ensuring experimental safety.

[0047] Furthermore, the waste liquid discharge pipeline is preferably equipped with a two-way solenoid valve 72 to prevent waste liquid backflow and contamination. Additionally, the discharge module uses gas pressurization to ensure complete discharge of liquid from the filter bottle 21.

[0048] like Figure 4 As shown, multiple post-processing filtration devices 100 can also be provided according to experimental requirements and arranged sequentially on the display shelf 200.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A post-processing filtration device, characterized in that, The device comprises: a mounting rack (10) on which a control module is mounted; and a filter module, a reaction bottle mounting position (30) and a multi-channel switching injection module which are integrally arranged on the mounting rack (10) and electrically connected with the control module, the filter module comprising a filter bottle mounting position (20) for placing a filter bottle (21); the multi-channel switching injection module comprising a multi-channel connecting pipeline connected with the filter bottle mounting position (20) and the reaction bottle mounting position (30) respectively, a multi-channel switching valve (40) in switching communication with each connecting channel of the multi-channel connecting pipeline, and an injection pump connected with the multi-channel switching valve (40), wherein the injection pump has a temporary storage cavity, and the multi-channel switching valve (40) has a common connecting channel in communication with the temporary storage cavity.

2. The post-processing filter device according to claim 1, wherein the injection pump is electrically connected with the control module, and the injection pump is a high-precision injection pump (50) with a single temporary storage capacity in the temporary storage cavity not exceeding a preset standard capacity, and when the liquid transfer volume exceeds the preset standard capacity, the injection pump automatically performs batch liquid transfer.

3. The post-processing filter device according to claim 2, wherein the filter module further comprises a stirring paddle (22) placed in the filter bottle (21), and a closed-loop stepping motor (61) drivingly connected with the stirring paddle (22).

4. The post-processing filter device according to claim 3, wherein the closed-loop stepping motor (61) is drivingly connected with the stirring paddle (22) through a synchronous wheel and a synchronous belt (64); the synchronous wheel comprises a driving wheel (62) coaxially connected with an output shaft of the closed-loop stepping motor (61), and a driven wheel (63) coaxially connected with a top portion of the stirring paddle (22), and the synchronous belt (64) is sleeved on the driving wheel (62) and the driven wheel (63).

5. The post-processing filter device according to claim 4, wherein a top end of the stirring paddle (22) is provided with an outer hexagonal bushing (23), the driven wheel (63) is provided with an inner hexagonal shaft sleeve (631), and the outer hexagonal bushing (23) is sleeved on the outer side of the inner hexagonal shaft sleeve (631); and / or the inner hexagonal shaft sleeve (631) provided on the driven wheel (63) is provided with deep groove ball bearings (632) at both ends thereof; and / or the synchronous wheel is a synchronous wheel with a 3mm pitch and a 1:1 transmission ratio.

6. The post-processing filter device according to claim 4, wherein the reaction bottle mounting position (30) and the filter bottle mounting position (20) are arranged side by side on one side of the mounting rack (10), the multi-channel switching valve (40) and the high-precision injection pump (50) are arranged on the other side of the mounting rack (10), the closed-loop stepping motor (61) is arranged above the multi-channel switching valve (40), and the synchronous wheel and the synchronous belt (64) are arranged on the top of the mounting rack (10).

7. The post-processing filter device according to claim 6, wherein The top of the installation rack (10) is further provided with four fluorine-tube penetrating joints (41) corresponding to the connecting channels of the multi-channel connecting pipeline; and / or The high-precision injection pump (50), the multi-channel switching valve (40), the multi-channel connecting pipeline, the filtering bottle (21), the reaction bottle (31), and each connecting pipeline and each connecting joint are made of PTFE anti-corrosion material.

8. The post-treatment filtering device according to claim 1, characterized in that, The bottom of the filtering bottle (21) is conical; and / or The filtering bottle installation site (20) and / or the reaction bottle installation site (30) are installed with quick buckles for installing the filtering bottle (21) or the reaction bottle (31).

9. The post-treatment filtering device according to claim 1 or 2, characterized in that, The multi-channel connecting pipeline further comprises a good solvent connecting channel connected with a good solvent bottle and a poor solvent connecting channel connected with a poor solvent bottle; and / or A plurality of post-treatment filtering devices are arranged on a display rack (200) in sequence.

10. The aftertreatment filtration device of claim 1, wherein, Further comprising a liquid discharging module, which comprises a three-way electromagnetic valve (71) connected with the liquid discharging port of the filtering bottle (21), and a waste liquid discharging pipeline and a recycling pipeline connected with the three-way electromagnetic valve (71); The waste liquid discharging pipeline is further provided with a two-way electromagnetic valve (72) for preventing backflow.

Images