Material feeding device for chemical rectifying tower

Abstract

The invention relates to the technical field of material feeding of rectifying towers, and discloses a material feeding device for a chemical rectifying tower, which comprises a material feeding structure mounted on a rectifying tower body connecting pipe, and the material feeding structure comprises a mixing mechanism, a conveying mechanism, a material storage mechanism, a preheating mechanism and a butt joint assembly, the lower end of the mixing mechanism is connected with the input end of the conveying mechanism, the output end of the conveying mechanism is connected with the upper end of the storage mechanism, and the lower end of the storage mechanism is connected with the upper end of the preheating mechanism. According to the material feeding device for the chemical rectifying tower, the mixing mechanism is arranged on one side of the rectifying tower body, so that multi-component materials can be uniformly mixed, and the subsequent rectifying effect is improved; the conveying mechanism, the storage mechanism and the preheating mechanism are arranged on one side of the mixing mechanism, so that mixed materials can be uniformly conveyed into the storage mechanism for temporary storage and are preheated through the preheating mechanism, and the phenomenon that the materials enter the rectifying tower body to influence the rectifying efficiency is increased.

Description

Technical Field

[0001] The invention relates to the technical field of material feeding into a distillation tower, in particular to a material feeding device for a chemical distillation tower. Background Art

[0002] The chemical distillation tower is a key equipment used in the chemical industry to separate mixtures. Its working principle is based on the difference in volatility (or boiling point) of each component in the mixture. The distillation tower can vaporize the components in the mixture by heating, and then convert the gaseous components back into liquid through the condensation process, thereby achieving effective separation of different components. In order to ensure that the material enters the distillation tower correctly and efficiently, a material inlet device is often set in the middle of the distillation tower.

[0003] At present, the patent with announcement number CN221358591U discloses a multi-component chemical material distillation tower, including a tower body and a material tank for containing materials, the output end of the material tank is provided with a quantitative conveying mechanism for quantitatively conveying materials to the inside of the tower body, the output end of the quantitative conveying mechanism is connected with a discharge ring, the discharge ring is connected to the inner wall of the tower body, the discharge ring is provided with a plurality of distribution pipes, and the plurality of distribution pipes are arranged equidistantly around the central axis of the discharge ring. The utility model uses a quantitative conveying mechanism to gradually introduce raw materials into the material, gradually balance the heat in the tower, avoid drastic temperature fluctuations, and the raw materials entering the tower are evenly dispersed and fall into the inside of the tower body through the distribution pipe, so that the material distribution in the tower is more uniform, improves the mass transfer efficiency, avoids large-area contact between the raw materials and the gas phase or liquid phase, and can also prolong the contact time between the raw materials and the liquid phase, thereby improving the distillation effect.

[0004] However, the following problems still exist in the actual use of the material entering the material distillation tower:

[0005] Multi-component chemical materials may be stratified during storage or transportation. The difference in density between different components will cause the light component to float on top and the heavy component to sink to the bottom. Some multi-component mixtures may form high-viscosity areas when left at rest. However, the material inlet device of the current distillation tower does not have the function of stirring the multi-component chemical materials, which in turn affects the separation effect of the multi-component chemical materials and may also cause the risk of sedimentation and blockage. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a material feeding device for a chemical distillation tower to solve the problem that the current feeding device does not have the function of stirring the multi-component chemical materials before they are fed into the distillation tower body, thereby affecting the separation effect of the multi-component chemical materials and may also cause the risk of deposition and blockage.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a material feeding device for a chemical distillation tower, comprising a material feeding structure installed on a connecting pipe of a distillation tower body, the material feeding structure comprising a mixing mechanism, a conveying mechanism, a material storage mechanism, a preheating mechanism and a docking assembly, the lower end of the mixing mechanism is connected to the input end of the conveying mechanism, the output end of the conveying mechanism is connected to the upper end of the material storage mechanism, the lower end of the material storage mechanism is connected to the upper end of the preheating mechanism, the lower end of the preheating mechanism is connected to the upper end of the docking assembly, the lower end of the docking assembly is connected to an end of the connecting pipe away from the distillation tower body, and the mixing mechanism, the conveying mechanism, the material storage mechanism, the preheating mechanism, the docking assembly, the connecting pipe and the interior of the distillation tower body are connected.

[0008] Furthermore, the mixing mechanism includes a mixing barrel, a discharge pipe, a cover body, a feeding hopper and a stirring assembly. A mixing chamber is opened on the upper surface of the mixing barrel. The inner wall of the lower end of the cover body is threadedly connected to the outer wall of the upper end of the mixing barrel. The lower end of the feeding hopper is fixedly connected to the upper end of the cover body. The upper end of the stirring assembly is connected to the upper surface of the cover body. The lower end of the stirring assembly passes through the upper surface of the cover body to the mixing chamber. One end of the discharge pipe is fixedly connected to the side wall of the lower end of the mixing barrel, and the other end of the discharge pipe is connected to the input end of the conveying mechanism. The conveying mechanism, the discharge pipe, the mixing chamber and the feeding hopper are internally connected.

[0009] Furthermore, the stirring assembly includes a mixing motor, a support column and a plurality of stirring rods. The outer wall of the mixing motor is fixedly connected to the upper surface of the cover body, the output shaft of the mixing motor is fixedly connected to the upper end of the support column, the lower end of the support column passes through the upper surface of the cover body to the mixing chamber, and is fixedly connected to the plurality of stirring rods.

[0010] Furthermore, a partition is fixedly connected to the inner wall of the mixing chamber, the partition is located above the discharge pipe, and the partition is located below the plurality of stirring rods.

[0011] Furthermore, the conveying mechanism includes a conveying pump, a material extraction pipe and a material delivery pipe, the input end of the conveying pump is fixedly connected to one end of the material extraction pipe, the outer wall of the other end of the material extraction pipe is fixedly connected to the inner wall of the material discharge pipe, the output end of the conveying pump is fixedly connected to the lower end of the material delivery pipe, the other end of the material delivery pipe is connected to the upper end of the material storage mechanism, and the material discharge pipe, the material extraction pipe, the conveying pump, the material delivery pipe and the material storage mechanism are internally connected.

[0012] Furthermore, the material storage mechanism includes a solenoid valve, a docking tube, a temporary storage barrel and a liquid level monitoring component. A temporary storage chamber is opened inside the temporary storage barrel. The upper end of the temporary storage barrel is fixedly connected to the upper end of the material conveying pipe, the lower end of the temporary storage barrel is fixedly connected to the upper end of the docking tube, the lower end of the docking tube is connected to the preheating mechanism, the solenoid valve is installed on the docking tube, the liquid level monitoring component is installed in the temporary storage chamber, and the material conveying pipe, the temporary storage chamber, the docking tube and the preheating mechanism are internally connected.

[0013] Furthermore, the liquid level monitoring assembly includes a liquid level rod and a liquid level sensor, one end of the liquid level rod is fixedly connected to the inner wall of the temporary storage chamber, and the other end of the liquid level rod is fixedly connected to one end of the liquid level sensor, and the liquid level rod and the liquid level sensor are located at the upper end of the temporary storage chamber.

[0014] Furthermore, the preheating mechanism includes a heating wire, a preheating barrel and a temperature monitoring assembly. The upper end of the preheating barrel is fixedly connected to the lower end of the docking tube, and the lower end of the preheating barrel is connected to the upper end of the docking assembly. A preheating cavity is opened inside the preheating barrel. The heating wire and the temperature monitoring assembly are both located in the preheating cavity, and both ends of the heating wire respectively pass through the upper and lower ends of the preheating barrel to the outside of the preheating barrel, and the docking tube, the preheating cavity and the docking assembly are internally connected.

[0015] Furthermore, the temperature monitoring assembly includes a support rod and a temperature sensor, one end of the support rod is fixedly connected to the inner wall of the preheating chamber, and the other end of the support rod is fixedly connected to one end of the temperature sensor, and the support rod and the temperature sensor are located in the middle of the preheating chamber.

[0016] Furthermore, the docking assembly includes a flow meter, a discharge pipe and two flanges. The upper end of the discharge pipe is fixedly connected to the lower end of the preheating barrel. The two flanges are respectively fixedly connected to the discharge pipe and the connecting pipe, and the two flanges match. The flow meter is installed on the discharge pipe, and the preheating chamber, the discharge pipe, the two flanges and the connecting pipe are internally connected.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. This material feeding device for a chemical distillation tower can evenly mix multi-component materials and improve the subsequent distillation effect by arranging a mixing mechanism on one side of the distillation tower body.

[0019] 2. This material feeding device for a chemical distillation tower can uniformly transport the mixed materials to the storage mechanism for temporary storage and preheat them through the preheating mechanism by arranging a conveying mechanism, a storage mechanism and a preheating mechanism on one side of the mixing mechanism, thereby increasing the amount of materials entering the distillation tower body and affecting the distillation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall appearance of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the overall appearance after removing the distillation tower body;

[0022] Figure 3 It is a detailed connection diagram of the mixing structure and the conveying mechanism and other components of the present invention;

[0023] Figure 4It is a detailed connection diagram of the material storage mechanism, preheating mechanism and docking assembly of the present invention;

[0024] Figure 5 For the present invention Figure 4 The enlarged schematic diagram of point A in the middle;

[0025] Figure 6 For the present invention Figure 4 A magnified schematic diagram of point B in the middle.

[0026] In the figure: 1. distillation tower body; 2. connecting pipe; 3. flange; 4. flow meter; 5. solenoid valve; 6. mixing barrel; 7. discharge pipe; 8. delivery pump; 9. delivery pipe; 10. cover; 11. hopper; 12. mixing motor; 13. heating wire; 14. preheating barrel; 15. docking pipe; 16. temporary storage barrel; 17. discharge pipe; 18. extraction pipe; 19. support column; 20. stirring rod; 21. partition net; 22. mixing chamber; 23. temporary storage chamber; 24. preheating chamber; 25. liquid level rod; 26. liquid level sensor; 27. support rod; 28. temperature sensor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figure 1-Figure 6 A material feeding device for a chemical distillation tower comprises a material feeding structure installed on a connecting pipe 2 of a distillation tower body 1, wherein the material feeding structure comprises a mixing mechanism, a conveying mechanism, a material storage mechanism, a preheating mechanism and a docking assembly, wherein the lower end of the mixing mechanism is connected to the input end of the conveying mechanism, the output end of the conveying mechanism is connected to the upper end of the material storage mechanism, the lower end of the material storage mechanism is connected to the upper end of the preheating mechanism, the lower end of the preheating mechanism is connected to the upper end of the docking assembly, the lower end of the docking assembly is connected to an end of the connecting pipe 2 away from the distillation tower body 1, and the mixing mechanism, the conveying mechanism, the material storage mechanism, the preheating mechanism, the docking assembly, the connecting pipe 2 and the interior of the distillation tower body 1 are connected.

[0029] The material feeding device for a chemical distillation tower in the present invention is similar in structure to the existing material feeding device for a chemical distillation tower, such as a multi-component chemical material distillation tower disclosed in patent publication number CN221358591U. Figures 1 to 6 As shown, the material feeding device for a chemical distillation tower in the present invention can be used according to the following steps:

[0030] 1. First, before putting the multi-component materials into the distillation tower body 1, put them into the mixing mechanism for mixing.

[0031] 2. Start the conveying mechanism. After the conveying mechanism is started, the mixed materials in the mixing mechanism can be transported to the storage mechanism.

[0032] 3. The material entering the storage mechanism will directly enter the preheating mechanism.

[0033] 4. After entering the preheating mechanism, the material is preheated by the preheating mechanism first, and then enters the docking component.

[0034] 5. The material entering the docking assembly then flows into the distillation tower body 1 through the connecting pipe 2 for distillation, thus completing the cycle.

[0035] Special mention should be made here:

[0036] 1. The above-mentioned mixing mechanism, conveying mechanism, material storage mechanism and preheating mechanism are all uniformly controlled by the distillation tower body 1 with its own controller, or an external adapter controller. Because the controller is a very mature technology in the prior art, its principle is not described in detail here.

[0037] 2. It takes time to heat the material inside the preheating mechanism. At this time, the heating temperature of the material can be monitored in real time inside the preheating mechanism. When the appropriate temperature is reached, it is discharged into the distillation tower body 1 through the docking assembly and the connecting pipe 2.

[0038] 3. Similarly, because the preheating mechanism takes time to preheat, the material transported by the conveying mechanism may exceed the capacity of the preheating mechanism. At this time, it can be temporarily stored inside the storage mechanism to avoid damage to the preheating mechanism caused by excessive material.

[0039] 4. If the material inside the storage mechanism reaches the set value, the conveying mechanism can be closed to stop the material conveying until the material inside the storage mechanism is lower than the set value and then restarted, which can reduce the workload of the conveying mechanism.

[0040] 5. If the material inventory in the storage mechanism exceeds the set value for a long time, and the preheating temperature in the preheating mechanism does not reach the standard for a long time, the information will be immediately transmitted to the external terminal via wireless or wired electrical signals to remind maintenance personnel to check and repair.

[0041] As a preferred embodiment of the present invention, the mixing mechanism includes a mixing barrel 6, a discharge pipe 7, a cover body 10, a feeding hopper 11 and a stirring assembly. A mixing chamber 22 is provided on the upper surface of the mixing barrel 6. The inner wall of the lower end of the cover body 10 is threadedly connected to the outer wall of the upper end of the mixing barrel 6. The lower end of the feeding hopper 11 is fixedly connected to the upper end of the cover body 10. The upper end of the stirring assembly is connected to the upper surface of the cover body 10. The lower end of the stirring assembly passes through the upper surface of the cover body 10 to the mixing chamber 22. One end of the discharge pipe 7 is fixedly connected to the side wall of the lower end of the mixing barrel 6. The other end of the discharge pipe 7 is connected to the input end of the conveying mechanism. The conveying mechanism, the discharge pipe 7, the mixing chamber 22 and the feeding hopper 11 are internally connected.

[0042] More specifically, when the materials need to be mixed, it is only necessary to first open the seal of the feeding hopper 11, then put the materials into the feeding hopper 11, and then start the stirring component through the controller. After the stirring component is started, the materials entering the mixing chamber 22 can be stirred and mixed, and the mixed materials are transported to the storage mechanism via the discharge pipe 7 and the conveying mechanism.

[0043] As a preferred embodiment of the present invention, the stirring assembly includes a mixing motor 12, a support column 19 and a plurality of stirring rods 20. The outer wall of the mixing motor 12 is fixedly connected to the upper surface of the cover body 10, the output shaft of the mixing motor 12 is fixedly connected to the upper end of the support column 19, the lower end of the support column 19 passes through the upper surface of the cover body 10 to the mixing chamber 22, and is fixedly connected to the plurality of stirring rods 20.

[0044] More specifically, when the materials in the mixing chamber 22 need to be mixed, the controller turns on the mixing motor 12, and the mixing motor 12 starts the output shaft to rotate the support column 19. After the support column 19 rotates, it can also rotate the plurality of stirring rods 20, thereby achieving stirring and mixing of the materials in the mixing chamber 22.

[0045] As a preferred solution of the present invention, a partition net 21 is fixedly connected to the inner wall of the mixing chamber 22 , the partition net 21 is located above the discharge pipe 7 , and the partition net 21 is located below the plurality of stirring rods 20 .

[0046] More specifically, by providing the partition 21, some materials that are not absorbed or melted and mixed in the material can be filtered to avoid entering the interior of the distillation tower body 1 and affecting the distillation quality.

[0047] As a preferred embodiment of the present invention, the conveying mechanism includes a conveying pump 8, a drawing pipe 18 and a conveying pipe 9, the input end of the conveying pump 8 is fixedly connected to one end of the drawing pipe 18, the outer wall of the other end of the drawing pipe 18 is fixedly connected to the inner wall of the discharge pipe 7, the output end of the conveying pump 8 is fixedly connected to the lower end of the conveying pipe 9, the other end of the conveying pipe 9 is connected to the upper end of the storage mechanism, and the discharge pipe 7, the drawing pipe 18, the conveying pump 8, the conveying pipe 9 and the storage mechanism are internally connected.

[0048] More specifically, when it is necessary to convey materials, it is only necessary to start the conveying pump 8. After the conveying pump 8 is started, the input end draws materials from the discharge pipe 7, and then pumps them into the conveying pipe 9 through the output end, and finally enters the discharge mechanism through the conveying pipe 9.

[0049] As a preferred embodiment of the present invention, the material storage mechanism includes a solenoid valve 5, a docking tube 15, a temporary storage barrel 16 and a liquid level monitoring component. A temporary storage chamber 23 is opened inside the temporary storage barrel 16. The upper end of the temporary storage barrel 16 is fixedly connected to the upper end of the material delivery pipe 9, the lower end of the temporary storage barrel 16 is fixedly connected to the upper end of the docking tube 15, the lower end of the docking tube 15 is connected to the preheating mechanism, the solenoid valve 5 is installed on the docking tube 15, the liquid level monitoring component is installed in the temporary storage chamber 23, and the material delivery pipe 9, the temporary storage chamber 23, the docking tube 15 and the preheating mechanism are internally connected.

[0050] More specifically, when the material entering the storage mechanism meets the set value, it will directly enter the preheating mechanism through the temporary storage chamber 23 and the docking pipe 15 for preheating. When the preheating inside the preheating mechanism is slow, the docking pipe 15 is closed by the solenoid valve 5. At this time, the remaining material will be temporarily stored in the temporary storage chamber 23, waiting for the solenoid valve 5 to open. When the liquid level monitoring mechanism detects that the temporarily stored material reaches the set standard, it can transmit the electrical signal to the external processor by wire or wireless means, and then shut down the delivery pump 8 through the controller to stop continuing to transport the material.

[0051] As a preferred solution of the present invention, the liquid level monitoring assembly includes a liquid level rod 25 and a liquid level sensor 26, one end of the liquid level rod 25 is fixedly connected to the inner wall of the temporary storage chamber 23, and the other end of the liquid level rod 25 is fixedly connected to one end of the liquid level sensor 26, and the liquid level rod 25 and the liquid level sensor 26 are located at the upper end of the temporary storage chamber 23.

[0052] More specifically, the liquid level rod 25 supports the liquid level sensor 26 , and the liquid level sensor 26 can continuously monitor the material in the temporary storage chamber 23 in real time to achieve accurate control of the opening and closing of the delivery pump 8 .

[0053] It should be noted here that the liquid level sensor 26 is a prior art, and any model on the market that meets the requirements of chemical material detection can be used without specific limitation.

[0054] As a preferred embodiment of the present invention, the preheating mechanism includes a heating wire 13, a preheating barrel 14 and a temperature monitoring component. The upper end of the preheating barrel 14 is fixedly connected to the lower end of the docking tube 15, and the lower end of the preheating barrel 14 is connected to the upper end of the docking component. A preheating cavity 24 is provided inside the preheating barrel 14. The heating wire 13 and the temperature monitoring component are both located in the preheating cavity 24, and both ends of the heating wire 13 respectively pass through the upper and lower ends of the preheating barrel 14 to the outside of the preheating barrel 14, and the docking tube 15, the preheating cavity 24 and the interior of the docking component are connected.

[0055] More specifically, when the material enters the preheating chamber 24, it will be heated by the heating wire 13 so that it can reach the set temperature, thereby increasing the heating speed during the subsequent distillation of the distillation tower body 1. After heating, it can be monitored in real time by the temperature monitoring component. When it reaches the appropriate temperature, it is transported to the inside of the distillation tower body 1 through the docking component.

[0056] As a preferred solution of the present invention, the temperature monitoring assembly includes a support rod 27 and a temperature sensor 28, one end of the support rod 27 is fixedly connected to the inner wall of the preheating chamber 24, and the other end of the support rod 27 is fixedly connected to one end of the temperature sensor 28, and the support rod 27 and the temperature sensor 28 are located in the middle of the preheating chamber 24.

[0057] More specifically, the support rod 27 supports the temperature sensor 28 , and the temperature sensor 28 can monitor the temperature of the material inside the preheating chamber 24 in real time.

[0058] It should be noted here that the temperature sensor 28 is a prior art and any model on the market that meets the requirements for chemical material monitoring can be used without specific limitation; and the temperature sensor 28 can also be connected to the outside via wired or wireless means without specific limitation.

[0059] As a preferred solution of the present invention, the docking assembly includes a flow meter 4, a discharge pipe 17 and two flanges 3. The upper end of the discharge pipe 17 is fixedly connected to the lower end of the preheating barrel 14. The two flanges 3 are respectively fixedly connected to the discharge pipe 17 and the connecting pipe 2, and the two flanges 3 match. The flow meter 4 is installed on the discharge pipe 17, and the preheating chamber 24, the discharge pipe 17, the two flanges 3 and the connecting pipe 2 are internally connected.

[0060] More specifically, when the temperature inside the preheating chamber 24 reaches a set value, the flow meter 4 is started to discharge the material inside the preheating chamber 24 into the distillation tower body 1 at a set speed.

[0061] It should be noted here that: if the flow meter 4 controls the speed of material outflow, can satisfy the discharge of the material in the temporary storage chamber 23 into the preheating chamber 24, and can be heated to the set temperature in the preheating chamber 24, the solenoid valve 5 and the flow meter 4 can be opened at the same time, which is not limited here.

[0062] 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 material inlet device for a chemical distillation tower, comprising a material inlet structure installed on a connecting pipe (2) of a distillation tower body (1), characterized in that: The material inlet tower structure comprises a mixing mechanism, a conveying mechanism, a material storage mechanism, a preheating mechanism and a docking assembly, wherein the lower end of the mixing mechanism is connected to the input end of the conveying mechanism, the output end of the conveying mechanism is connected to the upper end of the material storage mechanism, the lower end of the material storage mechanism is connected to the upper end of the preheating mechanism, the lower end of the preheating mechanism is connected to the upper end of the docking assembly, the lower end of the docking assembly is connected to an end of a connecting pipe (2) away from a distillation tower body (1), and the mixing mechanism, the conveying mechanism, the material storage mechanism, the preheating mechanism, the docking assembly, the connecting pipe (2) and the distillation tower body (1) are internally connected.

2. The material feeding device for a chemical distillation tower according to claim 1, characterized in that: The mixing mechanism comprises a mixing barrel (6), a discharge pipe (7), a cover body (10), a hopper (11) and a stirring assembly. The upper surface of the mixing barrel (6) is provided with a mixing chamber (22). The inner wall of the lower end of the cover body (10) is threadedly connected to the outer wall of the upper end of the mixing barrel (6). The lower end of the hopper (11) is fixedly connected to the upper end of the cover body (10). The upper end of the stirring assembly is connected to the upper surface of the cover body (10). The lower end of the stirring assembly passes through the upper surface of the cover body (10) to the mixing chamber (22). One end of the discharge pipe (7) is fixedly connected to the side wall of the lower end of the mixing barrel (6). The other end of the discharge pipe (7) is connected to the input end of the conveying mechanism. The conveying mechanism, the discharge pipe (7), the mixing chamber (22) and the hopper (11) are internally connected.

3. The material feeding device for a chemical distillation tower according to claim 2, characterized in that: The stirring assembly comprises a mixing motor (12), a support column (19) and a plurality of stirring rods (20); the outer wall of the mixing motor (12) is fixedly connected to the upper surface of the cover body (10); the output shaft of the mixing motor (12) is fixedly connected to the upper end of the support column (19); the lower end of the support column (19) passes through the upper surface of the cover body (10) to the mixing chamber (22) and is fixedly connected to the plurality of stirring rods (20).

4. The material feeding device for a chemical distillation tower according to claim 3, characterized in that: The inner wall of the mixing chamber (22) is fixedly connected with a partition net (21), the partition net (21) is located above the discharge pipe (7), and the partition net (21) is located below the plurality of stirring rods (20).

5. The material feeding device for a chemical distillation tower according to claim 2, characterized in that: The conveying mechanism comprises a conveying pump (8), a material extraction pipe (18) and a material conveying pipe (9); the input end of the conveying pump (8) is fixedly connected to one end of the material extraction pipe (18); the outer wall of the other end of the material extraction pipe (18) is fixedly connected to the inner wall of the material discharge pipe (7); the output end of the conveying pump (8) is fixedly connected to the lower end of the material conveying pipe (9); the other end of the material conveying pipe (9) is connected to the upper end of the material storage mechanism; the material discharge pipe (7), the material extraction pipe (18), the conveying pump (8), the material conveying pipe (9) and the internal part of the material storage mechanism are in communication.

6. The material feeding device for a chemical distillation tower according to claim 5, characterized in that: The material storage mechanism comprises a solenoid valve (5), a butt joint pipe (15), a temporary storage barrel (16) and a liquid level monitoring component. The temporary storage barrel (16) is provided with a temporary storage chamber (23). The upper end of the temporary storage barrel (16) is fixedly connected to the upper end of the material conveying pipe (9), the lower end of the temporary storage barrel (16) is fixedly connected to the upper end of the butt joint pipe (15), the lower end of the butt joint pipe (15) is connected to the preheating mechanism, the solenoid valve (5) is mounted on the butt joint pipe (15), the liquid level monitoring component is mounted in the temporary storage chamber (23), and the material conveying pipe (9), the temporary storage chamber (23), the butt joint pipe (15) and the interior of the preheating mechanism are connected.

7. The material feeding device for a chemical distillation tower according to claim 6, characterized in that: The liquid level monitoring assembly comprises a liquid level rod (25) and a liquid level sensor (26); one end of the liquid level rod (25) is fixedly connected to the inner wall of the temporary storage chamber (23); the other end of the liquid level rod (25) is fixedly connected to one end of the liquid level sensor (26); the liquid level rod (25) and the liquid level sensor (26) are located at the upper end of the temporary storage chamber (23).

8. The material feeding device for a chemical distillation tower according to claim 6, characterized in that: The preheating mechanism comprises a heating wire (13), a preheating barrel (14) and a temperature monitoring component. The upper end of the preheating barrel (14) is fixedly connected to the lower end of a docking tube (15), the lower end of the preheating barrel (14) is connected to the upper end of the docking component, a preheating chamber (24) is provided inside the preheating barrel (14), the heating wire (13) and the temperature monitoring component are both located in the preheating chamber (24), and the two ends of the heating wire (13) respectively pass through the upper and lower ends of the preheating barrel (14) to the outside of the preheating barrel (14), and the docking tube (15), the preheating chamber (24) and the interior of the docking component are connected.

9. The material feeding device for a chemical distillation tower according to claim 8, characterized in that: The temperature monitoring assembly comprises a support rod (27) and a temperature sensor (28), one end of the support rod (27) is fixedly connected to the inner wall of the preheating chamber (24), and the other end of the support rod (27) is fixedly connected to one end of the temperature sensor (28), and the support rod (27) and the temperature sensor (28) are located in the middle of the preheating chamber (24).

10. The material feeding device for a chemical distillation tower according to claim 8, characterized in that: The docking assembly comprises a flow meter (4), a discharge pipe (17) and two flanges (3); the upper end of the discharge pipe (17) is fixedly connected to the lower end of the preheating barrel (14); the two flanges (3) are respectively fixedly connected to the discharge pipe (17) and the connecting pipe (2), and the two flanges (3) match each other; the flow meter (4) is installed on the discharge pipe (17); and the preheating chamber (24), the discharge pipe (17), the two flanges (3) and the connecting pipe (2) are internally connected.

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