Automatic feed device for a rectification column
Patent Information
- Application Number
- CN202620054522.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-16
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2036-01-16
AI Technical Summary
但这类装置普遍存在调控响应滞后的问题，难以应对原料供给波动带来的液位突变，易导致进料流量不稳定
1.罐内液位变化带动浮动板沿导向槽升降，浮动板直接抵接驱动块并传递压力，当液位升高时，浮动板向上滑动抵接驱动块，驱动缸体内的介质受压后沿驱动腔体推动滑动块，进而带动挡板同步抬升；液位降低时，复位弹簧自动回弹驱动块，介质回流带动滑动块复位，挡板随之回落，相较于电控调节的滞后性，该机械传动方式响应无延迟，且调节幅度与液位变化量呈线性对应关系，能精准控制挡板开度，将罐内液位稳定在设定区间，进而保证静压头恒定，为精馏塔提供高精度的恒定进料流量。
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Figure CN224911789U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of distillation column equipment, and in particular to an automatic feeding device for a distillation column. Background Technology
[0002] In the chemical and other fields, distillation is the core process for achieving efficient separation and purification of multi-component mixtures. As the core equipment of this process, the distillation column's separation efficiency and product quality directly determine production benefits and product competitiveness.
[0003] The stable operation of a distillation column highly depends on precise control of the feed process. Automatic feeding devices must continuously provide the distillation column with a stable flow rate and qualified raw material to ensure the stability of the gas-liquid balance and mass and heat transfer processes within the column. Existing automatic feeding devices for distillation columns mostly monitor the liquid level in the tank using sensors and receive feedback signals, which are then used to regulate the feed or discharge flow rate via control valves. However, these devices generally suffer from lag in response, making it difficult to cope with sudden changes in liquid level caused by fluctuations in the feed supply, easily leading to unstable feed flow rates.
[0004] Regarding the aforementioned technologies, the applicant believes that there is a drawback in that it is difficult to control the liquid level and feed flow rate in real time to ensure a constant feed to the distillation column. Utility Model Content
[0005] To address the aforementioned technical problems, this application provides an automatic feeding device for a distillation column.
[0006] This application provides an automatic feeding device for a distillation column, which adopts the following technical solution: An automatic feeding device for a distillation column includes a tank body. A feed inlet is located on one side of the top of the tank body and communicates with the interior of the tank body. A discharge outlet is located at the bottom of the tank body and communicates with the interior of the tank body. A floating plate is installed inside the tank body. A guide groove along the axial direction of the tank body is provided on the side wall above the feed inlet, and one end of the floating plate is slidably disposed within the guide groove. A baffle is provided at the discharge outlet, and the top end of the baffle is slidably disposed within the guide groove. An opening structure is provided inside the tank wall, and the floating plate abuts against the opening structure, which drives the baffle to slide.
[0007] By adopting the above technical solution, a stable liquid level is used to form the supply liquid. When the liquid level fluctuates, the floating plate can be linked to open the structure to drive the baffle for adjustment. When the liquid level rises, the baffle rises to increase the overflow flow, and when the liquid level falls, the overflow flow is reduced accordingly. Dynamic adjustment always provides a constant flow of feed to the distillation column. The separation effect of the distillation column is extremely sensitive to the stability of the feed. A stable feed can avoid drastic fluctuations in the gas-liquid load in the column, prevent flooding, dry plate and other problems that affect separation, and thus ensure the purity of the top and bottom products of the column and reduce the production of unqualified products. A stable feed rate can keep the gas-liquid balance and heat balance in the distillation column in a stable state. If the feed rate fluctuates frequently, the distillation column needs to frequently adjust parameters such as reboiler heat load and top reflux flow to adapt, which will cause a lot of energy waste. The stable feed of this device can keep the various process parameters in the column in the optimal range, reduce the extra energy consumption caused by frequent parameter adjustment, and achieve energy-saving production.
[0008] Preferably, the opening structure includes a driving block, a driving cylinder, a return spring, a driving cavity, and a sliding block; the driving cylinder is disposed on the inner wall of the tank above the guide groove, and one end of the driving block is slidably disposed within the driving cylinder; the return spring is sleeved on the driving block, one end of the return spring is fixedly disposed on the driving cylinder, and the other end of the return spring is fixedly disposed at the other end of the driving block; the driving cavity is disposed within the tank wall of the tank, one end of the driving cavity is connected to the driving cylinder, one end of the sliding block is slidably disposed at the other end of the driving cavity, and the other end of the sliding block is fixedly connected to one end of the baffle.
[0009] By adopting the above technical solution, the change in liquid level in the tank drives the floating plate to rise and fall along the guide groove. The floating plate directly abuts against the driving block and transmits pressure. When the liquid level rises, the floating plate slides upward to abut against the driving block. After the medium in the driving cylinder is pressurized, it pushes the sliding block along the driving cavity, thereby driving the baffle to rise synchronously. When the liquid level drops, the reset spring automatically rebounds the driving block, the medium flows back and drives the sliding block to reset, and the baffle falls back. Compared with the lag of electronic control adjustment, this mechanical transmission method has no response delay, and the adjustment range is linearly related to the amount of liquid level change. It can accurately control the baffle opening and stabilize the liquid level in the tank within the set range, thereby ensuring a constant static pressure head and providing a high-precision constant feed flow rate for the distillation column.
[0010] Preferably, the tank wall is a hollow cavity, and the side of the tank is provided with a medium inlet and a medium outlet; the medium outlet is located above the medium inlet, the medium outlet is connected to the hollow cavity, and the medium inlet is connected to the hollow cavity.
[0011] By adopting the above technical solution, the hollow cavity inside the tank wall can be circulated with heating or cooling media. Through the circulation of the media, heat exchange occurs with the liquid inside the tank, precisely maintaining a constant liquid temperature. The distillation process is sensitive to feed temperature; temperature fluctuations can alter the liquid's vaporization rate, thereby disrupting the gas-liquid balance within the distillation column. This structure avoids abnormal feed conditions caused by changes in ambient temperature or fluctuations in the liquid's own temperature, ensuring a stable and consistent liquid temperature entering the distillation column, providing a prerequisite for efficient separation within the column.
[0012] Preferably, a filter pipe is provided at the feed inlet, the filter pipe is divided into a main inlet pipe section, a main outlet pipe section, a first branch pipe and a second branch pipe; the main inlet pipe section is connected to the input end of the first branch pipe and the input end of the second branch pipe respectively; the output end of the first branch pipe and the output end of the second branch pipe are connected to the input end of the main outlet pipe section; the output end of the main outlet pipe section is connected to the feed inlet.
[0013] By adopting the above technical solution, the filtration pipeline adopts a parallel structure of main inlet pipe section, double branch pipes and main outlet pipe section. The two branch pipes can be used independently as filtration passages. During the distillation production process, when the filter component of one branch pipe needs to be cleaned or replaced due to impurities, the passage valve of that branch can be closed separately, and the other branch pipe can be switched to continuously deliver liquid without interrupting the entire feeding process. This avoids the problem of feed interruption in the distillation column caused by shutdown for cleaning in traditional single-pipe filtration systems, ensures that the gas-liquid balance in the column is not broken, maintains the continuity and stability of distillation production, and reduces the production capacity loss caused by shutdown.
[0014] Preferably, both the first branch pipe and the second branch pipe are provided with a filter assembly, the filter assembly including a housing, a filter screen, and an end cap; one end of the housing of a single filter assembly is connected to the first branch pipe, and one end of the housing of the other filter assembly is connected to the second branch pipe; one end of the filter screen is disposed inside the housing, and the other end of the filter screen in the single filter assembly is disposed in the first branch pipe; the other end of the filter screen in the other filter assembly is disposed in the second branch pipe; the end cap is detachably connected to the other end of the housing.
[0015] By adopting the above technical solution, the filter assembly uses a built-in filter structure. One end of the filter is fixed inside the housing, and the other end extends into the branch pipeline. This allows for full-section interception of the liquid flowing through the branch pipeline, preventing leakage from the gap between the filter and the pipeline. This ensures that all incoming liquid is filtered through the filter, effectively intercepting solid particles and impurities in the liquid. At the same time, the interception area of the filter matches the flow cross-section of the pipeline, reducing liquid flow resistance while ensuring filtration accuracy. This prevents the feed flow rate from decreasing due to filter clogging and maintains the stable operation of the feeding system. The end cap of the filter assembly is detachably connected to the housing. When the filter needs to be cleaned or replaced due to impurities, it is not necessary to disassemble the entire branch pipeline; only the end cap needs to be removed to take the filter out of the housing.
[0016] Preferably, a first shut-off valve is provided at the input end of the first branch pipeline; and a second shut-off valve is provided at the input end of the second branch pipeline.
[0017] By adopting the above technical solution, the first and second shut-off valves are respectively set at the input ends of the first and second branch pipelines, allowing for independent on / off operation of the two branch pipelines. When the filter assembly of one branch pipeline needs cleaning, filter replacement, or maintenance, simply closing the corresponding branch shut-off valve will cut off the liquid flow in that branch, preventing liquid leakage from the branch port during maintenance and preventing unfiltered liquid from directly entering the main outlet pipe. Operators can safely and without interference complete maintenance work while the other branch is still supplying liquid normally, completely eliminating the drawbacks of traditional single-pipeline filtration systems requiring downtime for maintenance and ensuring the continuity of distillation feed.
[0018] Preferably, the bottom of the tank is provided with a stirring assembly including a drive motor, a rotating shaft, and a stirring rod; the rotating shaft passes through the bottom of the tank; the rotating shaft is rotatably connected to the tank; the working end of the drive motor is located at the outer end of the rotating shaft, and the middle part of the stirring rod is fixedly located at the inner end of the rotating shaft; the drive motor provides power for the rotation of the rotating shaft.
[0019] By adopting the above technical solution, the stirring assembly drives the rotating shaft and stirring rod to rotate via a drive motor, which can fully stir the liquid in the tank. For multi-component mixed distillation feedstock, the stirring action can break the liquid stratification or local concentration unevenness, so that the composition and concentration of the liquid in the tank remain uniform. After the uniform liquid enters the distillation column, it can avoid the fluctuation of gas-liquid balance in the column caused by local component differences, ensure the stability of distillation separation effect, and improve the composition consistency and qualification rate of the products at the top and bottom of the column.
[0020] Preferably, a feed pump is provided on the discharge port, and the discharge port is located on the distillation column via the feed pump.
[0021] By adopting the above technical solution, the feed pump can provide stable and controllable power output. Combined with the tank's automatic liquid level control structure, this achieves precise dual control over the feed flow rate of the distillation column. The tank maintains a constant liquid level through the linkage of floating plates and baffles, providing a stable suction level for the feed pump. The feed pump can precisely set the feed flow rate according to the process requirements of the distillation column by adjusting the pump speed or output power, avoiding fluctuations in the feed flow rate caused by pressure differential fluctuations between the tank and the distillation column. A stable feed flow rate ensures that the contact time and mass transfer efficiency of the gas and liquid phases within the column remain within the optimal range, preventing temperature and pressure imbalances within the column caused by flow fluctuations, further improving the distillation separation effect and product quality stability.
[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. Changes in the liquid level inside the tank cause the floating plate to rise and fall along the guide groove. The floating plate directly abuts against the drive block and transmits pressure. When the liquid level rises, the floating plate slides upward to abut against the drive block. After the medium in the drive cylinder is pressurized, it pushes the sliding block along the drive cavity, thereby driving the baffle to rise synchronously. When the liquid level drops, the reset spring automatically rebounds the drive block, the medium flows back and drives the sliding block to reset, and the baffle falls back. Compared with the lag of electronic control regulation, this mechanical transmission method has no response delay, and the adjustment range is linearly related to the amount of liquid level change. It can accurately control the baffle opening and stabilize the liquid level in the tank within the set range, thereby ensuring a constant static pressure head and providing a high-precision constant feed flow rate for the distillation column.
[0023] 2. The filtration pipeline adopts a parallel structure of main inlet section, dual branch lines and main outlet section. The two branch lines can be used independently as filtration channels. During the distillation production process, when the filter component of one branch line needs to be cleaned or replaced due to impurities, the passage valve of that branch line can be closed separately, and the other branch line can be switched to continuously deliver liquid without interrupting the entire feeding process. This avoids the problem of feed interruption in the distillation column caused by shutdown for cleaning in traditional single-line filtration systems, ensures that the gas-liquid balance in the column is not broken, maintains the continuity and stability of distillation production, and reduces the production capacity loss caused by shutdown. Attached Figure Description
[0024] Figure 1 This is a cross-sectional schematic diagram of the internal structure of the tank in the embodiment.
[0025] Figure 2 yes Figure 1 A magnified view of part A in the middle.
[0026] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the filter pipe in the embodiment.
[0027] Explanation of reference numerals in the attached drawings: 1. Tank body; 11. Inlet; 12. Outlet; 121. Feed pump; 13. Floating plate; 14. Guide groove; 15. Baffle; 16. Hollow cavity; 17. Medium inlet; 18. Medium outlet; 2. Opening structure; 21. Drive block; 22. Drive cylinder; 23. Return spring; 24. Drive cavity; 25. Sliding block; 3. Filter pipe; 31. Main inlet pipe section; 32. Main outlet pipe section; 33. First branch pipe; 331. First shut-off valve; 34. Second branch pipe; 341. Second shut-off valve; 4. Filter assembly; 41. Shell; 42. Filter screen; 43. End cap; 5. Stirring assembly; 51. Drive motor; 52. Rotating shaft; 53. Stirring rod. Detailed Implementation
[0028] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0029] This application discloses an automatic feeding device for a distillation column. (Refer to...) Figure 1 and Figure 2 The system includes a tank body 1, with a feed inlet 11 on one side of the top of the tank body 1, which communicates with the interior of the tank body 1; a discharge outlet 12 is provided at the bottom of the tank body 1, which also communicates with the interior of the tank body 1, and a feed pump 121 is provided on the discharge outlet 12, which is mounted on the distillation column via the feed pump 121; a floating plate 13 is provided inside the tank body 1, and a guide groove 14 along the axial direction of the tank body 1 is provided on the side wall above the feed inlet 11 inside the tank body 1, with one end of the floating plate 13 slidably disposed in the guide groove 14; a baffle 15 is provided at the discharge outlet 12, with the top end of the baffle 15 slidably disposed in the guide groove 14; an opening structure 2 is provided inside the tank wall of the tank body 1; the opening structure 2 includes a drive block 21, a drive cylinder 22, a return spring 23, a drive cavity 24, and a sliding block 25; the drive cylinder 22 is provided with... On the inner wall of the tank 1 above the guide groove 14, one end of the drive block 21 is slidably disposed inside the drive cylinder 22; the reset spring 23 is sleeved on the drive block 21, one end of the reset spring 23 is fixedly disposed on the drive cylinder 22, and the other end of the reset spring 23 is fixedly disposed on the other end of the drive block 21; the drive cavity 24 is disposed inside the tank wall of the tank 1, one end of the drive cavity 24 is connected to the drive cylinder 22, one end of the sliding block 25 is slidably disposed on the other end of the drive cavity 24, and the other end of the sliding block 25 is fixedly connected to one end of the baffle 15; liquid flows into the tank 1 through the feed port 11, the floating plate 13 slides upward under the buoyancy of the liquid, the floating plate 13 slides against the drive block 21 into the drive cylinder 22, so that the sliding block 25 slides against the baffle 15, adjusting the opening size of the discharge port 12.
[0030] Reference Figure 1The tank body 1 has a hollow cavity 16 inside its wall. The side of the tank body 1 is provided with a medium inlet 17 and a medium outlet 18. The medium outlet 18 is located above the medium inlet 17 and is connected to the hollow cavity 16. The medium inlet 17 is also connected to the hollow cavity 16. External medium is pumped into the hollow cavity 16 inside the tank wall through the medium inlet 17 on the side of the tank body 1. The liquid level of the medium inside the hollow cavity 16 rises continuously and fills the entire hollow cavity 16. The medium forms a stable flow channel inside the hollow cavity 16. An external power device drives the medium to flow in from the medium inlet 17 and out from the medium outlet 18, forming a continuous circulation flow.
[0031] Reference Figure 1 The bottom of the tank 1 is equipped with a stirring assembly 5, including a drive motor 51, a rotating shaft 52, and a stirring rod 53. The rotating shaft 52 is installed through the bottom of the tank 1 and is rotatably connected to the tank 1. The working end of the drive motor 51 is located at the outer end of the rotating shaft 52, and the middle part of the stirring rod 53 is fixedly installed at the inner end of the rotating shaft 52. The drive motor 51 provides power for the rotation of the rotating shaft 52. After the drive motor 51 is started, the power is transmitted through the working end of the drive motor 51 to the rotating shaft 52 that runs through the bottom of the tank 1. The rotating shaft 52 drives the stirring rod 53 to rotate synchronously, so as to achieve uniform mixing of the liquid in the tank 1 throughout the entire area.
[0032] Reference Figure 1 and Figure 3A filter pipe 3 is installed at the feed inlet 11. The filter pipe 3 is divided into a main inlet pipe section 31, a main outlet pipe section 32, a first branch pipe 33, and a second branch pipe 34. The main inlet pipe section 31 is connected to the input end of the first branch pipe 33 and the input end of the second branch pipe 34. The output end of the first branch pipe 33 and the output end of the second branch pipe 34 are connected to the input end of the main outlet pipe section 32. The output end of the main outlet pipe section 32 is connected to the feed inlet 11. A first shut-off valve 331 is installed at the input end of the first branch pipe 33. A second shut-off valve 341 is installed at the input end of the second branch pipe 34. Both the first branch pipe 33 and the second branch pipe 34 are equipped with filter components 4. The filter components 4 include a housing 41, a filter screen 42, and an end cap 43. One end of the housing 41 of a single filter component 4 is connected to the first branch pipe 33, and the other end is connected to the filter screen 44. One end of the housing 41 of the filter assembly 4 is connected to the second branch pipe 34; one end of the filter screen 42 is set inside the housing 41, and the other end of the filter screen 42 in a single filter assembly 4 is set inside the first branch pipe 33; the other end of the filter screen 42 in another filter assembly 4 is set inside the second branch pipe 34; the end cap 43 is bolted to the other end of the housing 41; when the filter screen 42 of the first branch pipe 33 needs to be cleaned or replaced due to impurities, the first shut-off valve 331 is closed, and the liquid is filtered only through the filter assembly 4 of the second branch pipe 34, ensuring that the feeding process is not interrupted. The end cap 43 of the filter assembly 4 of the first branch pipe 33 is directly removed, and the filter screen 42 is taken out of the housing 41 for cleaning or replacement. The first shut-off valve 331 is opened to restore the filtration function. Similarly, the filter assembly 4 of the second branch pipe 34 can be maintained online.
[0033] The working principle of the automatic feeding device for a distillation column in this application is as follows: The liquid to be processed first enters the filter pipe 3 at the feed inlet 11. The filter pipe 3 adopts a dual-branch parallel structure. After the liquid is diverted through the main inlet pipe section 31, it enters the first branch pipe 33 and the second branch pipe 34 respectively. The two sets of filter components 4 intercept impurities in the liquid through the filter screen 42. The filtered liquid flows to the main outlet pipe section 32 and finally enters the tank 1 through the feed inlet 11. When the filter screen 42 of the first branch pipe 33 becomes blocked, the first shut-off valve 331 is closed, and the liquid switches to the second branch pipe 34 to continue filtration, ensuring that the feeding process is not interrupted and completing the first... After cleaning or replacing the filter screen 42 of branch pipeline 33, the first shut-off valve 331 is reopened to restore the filtration function, enabling online maintenance of the filter assembly 4. Similarly, online maintenance can be performed on the filter assembly 4 of the second branch pipeline 34. After the liquid enters the tank 1, the stirring assembly 5 is started, and the drive motor 51 outputs power to rotate the rotating shaft 52 that runs through the bottom of the tank 1. The rotating shaft 52 further drives the stirring rod 53 to rotate synchronously. The stirring rod 53 stirs the liquid in the tank 1 throughout the entire area, promoting uniform mixing of the liquid and avoiding uneven concentration of components in certain areas. At the same time, the external power unit drives the temperature-controlled medium to be pumped from the medium inlet 17 on the side of the tank 1. The medium enters the hollow cavity 16 inside the tank wall of tank 1. Within the hollow cavity 16, the medium forms a stable flow channel and fills the cavity. It then flows out from the medium outlet 18 located above the medium inlet 17, forming a continuous circulating flow. Through this circulating flow, precise temperature control of the liquid inside tank 1 is achieved, ensuring the liquid remains within a suitable pretreatment temperature range. A floating plate 13 inside tank 1 slides along the guide groove 14. As liquid material is continuously injected, the liquid level gradually rises, and the floating plate 13 slides upwards under the buoyancy of the liquid. When the floating plate 13 contacts the drive block 21, it pushes the drive block 21 into the drive cylinder 22. The drive cylinder 22 is connected to the drive cavity 24. When the drive block 21 moves, it squeezes the medium in the drive cavity 24, pushing the sliding block 25 to slide along the drive cavity 24. This, in turn, causes the baffle 15, which is fixedly connected to the sliding block 25, to move synchronously along the guide groove 14. By changing the relative position of the baffle 15 and the outlet 12, the opening of the outlet 12 is adaptively adjusted. After the feed pump 121 at the outlet 12 is started, it delivers the uniformly mixed liquid in the tank 1 to the distillation column at the adjusted flow rate. When the liquid level in the tank 1 drops, the floating plate 13 falls back with the liquid level, and the reset spring 23 pushes the drive block 21 to reset, causing the baffle 15 to move in the opposite direction, thus achieving adaptive adjustment of the opening of the outlet 12.
[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An automatic feeding device for a distillation column, characterized in that: The tank includes a tank body (1), with a feed inlet (11) on one side of the top of the tank body (1), the feed inlet (11) being connected to the interior of the tank body (1); a discharge outlet (12) is provided at the bottom of the tank body (1), the discharge outlet (12) being connected to the interior of the tank body (1); a floating plate (13) is provided inside the tank body (1), and a guide groove (14) along the axial direction of the tank body (1) is provided on the side wall above the feed inlet (11) inside the tank body (1), one end of the floating plate (13) being slidably disposed in the guide groove (14); a baffle (15) is provided at the discharge outlet (12), the top end of the baffle (15) being slidably disposed in the guide groove (14); an opening structure (2) is provided inside the tank wall of the tank body (1), the floating plate (13) being used to abut against the opening structure (2), and the opening structure (2) being used to drive the baffle (15) to slide.
2. The automatic feeding device for a distillation column according to claim 1, characterized in that: The opening structure (2) includes a drive block (21), a drive cylinder (22), a return spring (23), a drive cavity (24), and a sliding block (25). The drive cylinder (22) is disposed on the inner wall of the tank (1) above the guide groove (14), and one end of the drive block (21) is slidably disposed inside the drive cylinder (22). The return spring (23) is sleeved on the drive block (21), one end of the return spring (23) is fixedly disposed on the drive cylinder (22), and the other end of the return spring (23) is fixedly disposed at the other end of the drive block (21). The drive cavity (24) is disposed inside the tank wall of the tank (1), one end of the drive cavity (24) is connected to the drive cylinder (22), one end of the sliding block (25) is slidably disposed at the other end of the drive cavity (24), and the other end of the sliding block (25) is fixedly connected to one end of the baffle (15).
3. The automatic feeding device for a distillation column according to claim 1, characterized in that: The tank (1) has a hollow cavity (16) inside its wall. The tank (1) has a medium inlet (17) and a medium outlet (18) on its side. The medium outlet (18) is located above the medium inlet (17). The medium outlet (18) is connected to the hollow cavity (16). The medium inlet (17) is connected to the hollow cavity (16).
4. The automatic feeding device for a distillation column according to claim 1, characterized in that: A filter pipe (3) is provided at the feed inlet (11). The filter pipe (3) is divided into a main inlet pipe section (31), a main outlet pipe section (32), a first branch pipe (33), and a second branch pipe (34). The main inlet pipe section (31) is connected to the input end of the first branch pipe (33) and the input end of the second branch pipe (34), respectively. The output end of the first branch pipe (33) and the output end of the second branch pipe (34) are connected to the input end of the main outlet pipe section (32). The output end of the main outlet pipe section (32) is connected to the feed inlet (11).
5. The automatic feeding device for a distillation column according to claim 4, characterized in that: Both the first branch pipe (33) and the second branch pipe (34) are equipped with a filter assembly (4). The filter assembly (4) includes a housing (41), a filter screen (42), and an end cap (43). One end of the housing (41) of a single filter assembly (4) is connected to the first branch pipe (33), and one end of the housing (41) of the other filter assembly (4) is connected to the second branch pipe (34). One end of the filter screen (42) is disposed inside the housing (41), and the other end of the filter screen (42) in a single filter assembly (4) is disposed in the first branch pipe (33). The other end of the filter screen (42) in the other filter assembly (4) is disposed inside the second branch pipe (34). The end cap (43) is detachably connected to the other end of the housing (41).
6. The automatic feeding device for a distillation column according to claim 4, characterized in that: A first shut-off valve (331) is provided at the input end of the first branch pipeline (33); a second shut-off valve (341) is provided at the input end of the second branch pipeline (34).
7. The automatic feeding device for a distillation column according to claim 1, characterized in that: The bottom of the tank (1) is provided with a stirring assembly (5) including a drive motor (51), a rotating shaft (52) and a stirring rod (53); the rotating shaft (52) is disposed through the bottom of the tank (1); the rotating shaft (52) is rotatably connected to the tank (1); the working end of the drive motor (51) is disposed at the outer end of the rotating shaft (52), and the middle part of the stirring rod (53) is fixedly disposed at the inner end of the rotating shaft (52); the drive motor (51) provides power for the rotation of the rotating shaft (52).
8. The automatic feeding device for a distillation column according to claim 1, characterized in that: A feed pump (121) is provided on the discharge port (12), and the discharge port (12) is set on the distillation column through the feed pump (121).