Feeding device with pretreatment function for catalyst production

Abstract

The utility model discloses a feeding device with a pretreatment function for catalyst production, which comprises a reaction tank, a feeding device and a feeding device, wherein a top cover is fixedly arranged at the top of the reaction tank; the feeding pretreatment assembly is arranged in the middle of the top cover, is used for performing premixing treatment on a solid-liquid mixture entering the reaction tank, and comprises a mixing tank fixedly connected to the middle of the top cover. According to the utility model, the continuous vibration of the crushing cone is matched with the fixed cone to crush the solid raw material falling into the mixing tank, and the solid raw material falls to the discharge pipe along with the liquid through the bottom of the reaction tank, and the eccentric sleeve drives the spiral blade to rotate through the linkage shaft; the reaction tank has the advantages that the reaction tank is simple in structure, the mixture is reversely conveyed to prolong the staying time of the mixture in the discharge pipe, the mixture can be mixed again, the reaction rate of reactants in the reaction tank is increased, and the production efficiency of the catalyst is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalyst production, in particular to a feeding device with a pretreatment function for catalyst production. Background Art

[0002] A catalyst generally refers to a substance that increases the reaction rate without changing the total standard Gibbs free energy of the reaction. It can also be described as a substance that can increase the rate of a chemical reaction without changing the chemical equilibrium, and whose quality and chemical properties do not change before and after the chemical reaction. According to statistics, more than 90% of industrial processes use catalysts, such as chemical, petrochemical, biochemical, and environmental protection. There are many types of catalysts, which can be divided into liquid catalysts and solid catalysts according to their state; they can be divided into homogeneous catalysts and heterogeneous catalysts according to the phase state of the reaction system. Homogeneous catalysts include acids, bases, soluble transition metal compounds, and peroxide catalysts. Catalysts occupy an extremely important position in the modern chemical industry. For example, iron catalysts are used in the production of synthetic ammonia, vanadium catalysts are used in the production of sulfuric acid, and different catalysts are used in the polymerization of ethylene and the production of three major synthetic materials such as butadiene rubber.

[0003] For example, a feed device for catalyst production provided by publication number CN217527340U includes a shell, a conveying motor is fixedly installed on the front surface of the shell, a feed assembly is arranged inside the shell, a first bracket is fixedly installed equidistantly on one side of the top of the shell, a mixing box is fixedly installed on the top of the first bracket, a mixing motor is fixedly installed on the top surface of the mixing box, a mixing assembly is arranged inside the mixing box, fixed supports are fixedly installed on both sides of the first bracket, and electric push rods are movably installed on both sides of the fixed supports. In the process of daily use, the feed device for catalyst production distributes the raw materials in proportion and puts them into the mixing box in batches, and the mixing motor is started to drive the stirring shaft and stirring rod to rotate, so that the catalyst raw materials are mixed fully, the imbalance of the raw material proportion is avoided, and the use effect of the catalyst is improved.

[0004] However, in actual use, the above technology is only simple stirring. For some solid-liquid reactions, the reaction rate of simple stirring is low, which reduces the production efficiency of the catalyst. Utility Model Content

[0005] The utility model aims to provide a feed device with a pretreatment function for catalyst production, so as to solve the problem that the simple stirring reaction efficiency is low during feeding, thereby reducing the production efficiency of the catalyst.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: including:

[0007] A reaction tank, wherein a top cover is fixedly provided on the top of the reaction tank;

[0008] A feed pretreatment component is arranged in the middle of the top cover, and the feed pretreatment component is used to premix the solid-liquid mixture entering the reaction tank. The feed pretreatment component includes a mixing tank fixedly connected to the middle of the top cover, the inner wall of the mixing tank is fixedly provided with a guide cover through a bracket, and the inner wall of the guide cover is fixedly connected to a positioning cover, the inner wall of the positioning cover is rotatably connected to an eccentric sleeve, the top of the eccentric sleeve is fixedly connected to a driving shaft, the inner wall of the eccentric sleeve is movably connected to an eccentric tube, and the surface of the bottom of the eccentric tube is fixed A moving cone is connected, and the moving cone is movably connected to the surface of the bottom of the positioning cover, the surface of the moving cone is fixedly connected to a crushing cone, the inner wall of the mixing tank corresponding to the position of the crushing cone is fixedly connected to a fixed cone, the top of the inner wall of the eccentric sleeve is fixedly connected to a linkage shaft, and the linkage shaft movably penetrates and extends to the bottom of the eccentric tube, and the linkage shaft does not contact the inner wall of the eccentric tube, the bottom of the mixing tank is fixedly connected to a discharge pipe, the surface of the linkage shaft corresponding to the position of the discharge pipe is fixedly connected to a spiral blade, and the surface of the spiral blade is provided with a plurality of protrusions;

[0009] A stirring assembly is arranged at the bottom of the feed pretreatment assembly, and is used to stir the reactants inside the reaction tank. The stirring assembly includes a stirring shaft rotatably connected to the bottom of the discharge pipe surface through a bearing, and the bottom of the linkage shaft is fixedly connected to the inner wall of the stirring shaft through a bracket, and a stirring paddle is fixedly provided on the surface of the stirring shaft.

[0010] Preferably, the inner diameter of the top of the moving cone is smaller than the inner diameter of the bottom of the positioning cover so that the moving cone will not separate from the surface of the positioning cover. The driving shaft is driven by a servo motor, and the interior of the reaction tank is connected to the interior of the discharge pipe.

[0011] Preferably, a mounting ring is fixedly connected to the surface of the stirring shaft corresponding to the position of the stirring paddle, and the stirring paddle is fixedly connected to the surface of the mounting ring, and the stirring paddle, the mounting ring and the middle of the stirring shaft are respectively provided with interconnected through holes to connect the interior of the stirring shaft with the interior of the reaction tank.

[0012] Preferably, the mixing tank is a cylindrical structure with sealed ends, the driving shaft movably penetrates through a bearing and extends to the top of the mixing tank, a rotating cover is rotatably provided on the surface of the top of the mixing tank, and the rotating cover is rotatably connected to the surface of the driving shaft through a bearing, and the rotating cover and the top of the mixing tank are respectively provided with a feeding groove, so that the rotating cover and the feeding grooves on the mixing tank are staggered with each other to achieve a sealing effect.

[0013] Preferably, a connecting pipe connected to the interior of the mixing tank is fixedly connected to the surface of the mixing tank, one end of the connecting pipe is fixedly connected to a liquid extraction pipe connected to the interior of the connecting pipe, and a driving pump is fixedly connected to the middle of the liquid extraction pipe, the driving pump is fixedly connected to the top of the top cover, and one end of the liquid extraction pipe away from the connecting pipe is fixedly connected to the top cover and extends to the interior of the reaction tank.

[0014] Preferably, the surface of the stirring shaft is rotatably connected to a fixed bracket via a bearing, and the fixed bracket is fixedly connected to the inner wall of the reaction tank, and the bottom of the stirring shaft is rotatably connected to the bottom of the inner wall of the reaction tank via a sealed bearing.

[0015] Preferably, both ends of the reaction tank are respectively fixed with feeding pipes for adding raw materials into the reaction tank, and the interior of the feeding pipes is connected with the interior of the reaction tank.

[0016] Preferably, the liquid extraction pipe is located at the edge of the inner wall of the reaction tank so that the liquid extraction pipe does not affect the normal rotation of the stirring paddle, and the liquid extraction pipe is located at the bottom of the reaction tank and does not contact the inner wall of the bottom of the reaction tank.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model uses the continuous vibration of the crushing cone to cooperate with the fixed cone to crush the solid raw materials that fall into the mixing tank, and the solid raw materials fall to the discharge pipe through the bottom of the reaction tank along with the liquid. The eccentric sleeve drives the spiral blade to rotate through the linkage shaft, and reversely transports the mixture to extend the time the mixture stays in the discharge pipe. At the same time, the mixture can also be mixed again, thereby increasing the reaction rate of the reactants in the reaction tank, thereby improving the production efficiency of the catalyst.

[0019] The utility model also allows the mixture to fall from the discharge pipe into the interior of the stirring shaft. Due to the continuous operation of the driving pump, the interior of the stirring shaft will be continuously pressurized, so that the mixture inside the stirring shaft will be sprayed into the interior of the reaction tank through the holes in the middle of the stirring shaft, the mounting ring and the stirring paddle, and mixed with the raw materials inside the reaction tank again. At the same time, the sprayed mixture can also play a role in stirring the raw materials inside the reaction tank, further improving the reaction efficiency of the reactants inside the reaction tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The overall structure of the feed device with pretreatment function for catalyst production of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2 The overall structure of the feed device with pretreatment function for catalyst production of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 3 This is a partial cross-sectional view of the overall structure of the feed device with pretreatment function for catalyst production of the utility model Figure 1 ;

[0023] Figure 4 This is a partial cross-sectional view of the overall structure of the feed device with pretreatment function for catalyst production of the utility model Figure 2 ;

[0024] Figure 5 This is a structural cross-sectional view of a mixing tank of a feed device with a pretreatment function for catalyst production according to the utility model;

[0025] Figure 6 This is an exploded view of the overall structure of a feed device with a pretreatment function for catalyst production according to the utility model.

[0026] In the figure: 1. reaction tank; 2. top cover; 3. mixing tank; 4. guide cover; 5. positioning cover; 6. eccentric sleeve; 7. driving shaft; 8. eccentric tube; 9. moving cone; 10. crushing cone; 11. fixed cone; 12. linkage shaft; 13. discharge pipe; 14. spiral blade; 15. stirring shaft; 16. mounting ring; 17. stirring paddle; 18. fixed bracket; 19. rotating cover; 20. feeding trough; 21. connecting pipe; 22. liquid extraction pipe; 23. driving pump; 24. feeding pipe. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 , the utility model provides a technical solution: including:

[0029] A reaction tank 1, a top cover 2 is fixedly installed on the top of the reaction tank 1, and feeding pipes 24 for adding raw materials into the reaction tank 1 are fixedly installed at both ends of the reaction tank 1, and the inside of the feeding pipe 24 is connected to the inside of the reaction tank 1;

[0030] A feed pretreatment component is arranged in the middle of the top cover 2, and the feed pretreatment component is used to premix the solid-liquid mixture entering the reaction tank 1. The feed pretreatment component includes a mixing tank 3 fixedly installed in the middle of the top cover 2, a guide cover 4 is fixedly installed on the inner wall of the mixing tank 3 through a bracket, and a positioning cover 5 is fixedly installed on the inner wall of the guide cover 4, an eccentric sleeve 6 is rotatably connected to the inner wall of the positioning cover 5, a driving shaft 7 is fixedly installed on the top of the eccentric sleeve 6, an eccentric tube 8 is movably connected to the inner wall of the eccentric sleeve 6, a moving cone 9 is fixedly installed on the surface of the bottom of the eccentric tube 8, and the moving cone 9 is movably connected to the surface of the bottom of the positioning cover 5, the inner diameter of the top of the moving cone 9 is smaller than the inner diameter of the bottom of the positioning cover 5, so that the moving cone 9 will not separate from the surface of the positioning cover 5, the driving shaft 7 is driven by a servo motor, the interior of the reaction tank 1 is connected to the interior of the discharge pipe 13, a crushing cone 10 is fixedly installed on the surface of the moving cone 9, and a fixed cone 11 is fixedly installed on the inner wall of the mixing tank 3 corresponding to the position of the crushing cone 10;

[0031] When the above structure is in use, the servo motor is energized to drive the drive shaft 7 to rotate, and the drive shaft 7 drives the eccentric sleeve 6 to rotate. In conjunction with the mutual limiting cooperation of the movable cone 9 and the positioning cover 5, the eccentric sleeve 6 drives the movable cone 9 and the crushing cone 10 to vibrate eccentrically through the eccentric tube 8, and the crushing cone 10 cooperates with the fixed cone 11 to crush the solid raw materials that fall into the mixing tank 3.

[0032] A linkage shaft 12 is fixedly installed on the top of the inner wall of the eccentric sleeve 6, and the linkage shaft 12 movably penetrates and extends to the bottom of the eccentric tube 8, and the linkage shaft 12 does not contact the inner wall of the eccentric tube 8. A discharge pipe 13 is fixedly installed at the bottom of the mixing tank 3, and a spiral blade 14 is fixedly installed on the surface of the linkage shaft 12 corresponding to the position of the discharge pipe 13, and a plurality of protrusions are provided on the surface of the spiral blade 14;

[0033] When the above structure is in use, the crushed raw materials fall to the discharge pipe 13 through the bottom of the reaction tank 1, and the eccentric sleeve 6 drives the spiral blade 14 to rotate through the linkage shaft 12. The reverse conveying of the spiral blade 14 and the multiple protrusions on the spiral blade 14 will extend the time that the above fluid stays in the discharge pipe 13, and at the same time, it can also play a role in re-mixing the mixture, thereby accelerating the reaction process.

[0034] A stirring assembly is arranged at the bottom of the feed pretreatment assembly, and the stirring assembly is used to stir the reactants inside the reaction tank 1. The stirring assembly includes a stirring shaft 15 rotatably connected to the bottom of the surface of the discharge pipe 13 through a bearing, and the bottom of the linkage shaft 12 is fixedly installed with the inner wall of the stirring shaft 15 through a bracket, and a stirring paddle 17 is fixedly installed on the surface of the stirring shaft 15, and a fixed bracket 18 is rotatably connected to the surface of the stirring shaft 15 through a bearing, and the fixed bracket 18 is fixedly installed on the inner wall of the reaction tank 1, and the bottom of the stirring shaft 15 is rotatably connected to the bottom of the inner wall of the reaction tank 1 through a sealed bearing, and the surface of the stirring shaft 15 corresponding to the position of the stirring paddle 17 is fixedly installed with a mounting The mixing tank 3 is a cylindrical structure with sealed ends. The driving shaft 7 is movably penetrated through the bearing and extends to the top of the mixing tank 3. A rotating cover 19 is rotatably provided on the surface of the top of the mixing tank 3. The rotating cover 19 is rotatably connected to the surface of the driving shaft 7 through a bearing. The top of the rotating cover 19 and the mixing tank 3 are respectively provided with a feeding groove 20, so that the rotating cover 19 and the feeding groove 20 on the mixing tank 3 are interlaced with each other to achieve a sealing effect;

[0035] When the above structure is in use, the rotating cover 19 is rotated so that the rotating cover 19 and the feeding groove 20 on the top of the mixing tank 3 overlap, and solid raw materials are added into the mixing tank 3 through the feeding groove 20. After the raw materials are added, the rotating cover 19 is rotated so that the rotating cover 19 and the feeding groove 20 on the top of the mixing tank 3 are staggered with each other, so that the interior of the mixing tank 3 forms a sealed structure.

[0036] A connecting pipe 21 connected to the inside of the mixing tank 3 is fixedly installed on the surface of the mixing tank 3, a liquid extraction pipe 22 connected to the inside of the connecting pipe 21 is fixedly installed at one end of the connecting pipe 21, and a driving pump 23 is fixedly installed in the middle of the liquid extraction pipe 22, and the driving pump 23 is fixedly installed on the top of the top cover 2, and the end of the liquid extraction pipe 22 away from the connecting pipe 21 is fixedly penetrated through the top cover 2 and extends to the inside of the reaction tank 1, and the liquid extraction pipe 22 is located at the edge of the inner wall of the reaction tank 1 so that the liquid extraction pipe 22 does not affect the normal rotation of the stirring paddle 17, and the liquid extraction pipe 22 is located at the bottom of the reaction tank 1 and does not contact the bottom inner wall of the reaction tank 1. The pump 23 is powered on to start working, and the pump 23 is driven to suck the solid-liquid mixture inside the reaction tank 1 into the liquid extraction pipe 22 from time to time, and the solid-liquid mixture enters the mixing tank 3 through the liquid extraction pipe 22 and the connecting pipe 21, and the solid-liquid mixture is mixed with the solid inside the mixing tank 3 from time to time, and finally the solid-liquid mixture and the solid crushed materials fall on the inner wall of the discharge pipe 13 together, so that the solid-liquid mixture inside the reaction tank 1 can fully contact with the solid raw materials in the mixing tank 3 in advance, and at the same time, the solid-liquid mixture inside the reaction tank 1 is continuously injected into the mixing tank 3, which can also flush the mixing tank 3.

[0037] The working principle corresponding to the above structure is: when in use, the utility model drives the driving shaft 7 to rotate by energizing the servo motor, and the driving shaft 7 drives the eccentric sleeve 6 to rotate, and when the eccentric sleeve 6 rotates, under the eccentric action of the inner wall of the eccentric sleeve 6, the mutual limiting cooperation of the moving cone 9 and the positioning cover 5 makes the eccentric sleeve 6 drive the moving cone 9 and the crushing cone 10 to vibrate eccentrically through the eccentric tube 8. At this time, the rotating cover 19 and the feeding slot 20 on the top of the mixing tank 3 are overlapped, and solid is added into the interior of the mixing tank 3 through the feeding slot 20. Raw materials, after the raw materials are put into the mixing tank 3, the rotating cover 19 is rotated so that the rotating cover 19 and the feeding slot 20 on the top of the mixing tank 3 are interlaced with each other, so that a sealed structure is formed inside the mixing tank 3, and the solid raw materials are guided by the guide cover 4 on the inner wall of the mixing tank 3 and fall between the crushing cone 10 and the fixed cone 11. Due to the continuous vibration of the crushing cone 10, the crushing cone 10 and the fixed cone 11 can crush the solid raw materials falling into the mixing tank 3, and the crushed raw materials fall to the discharge pipe 13 through the bottom of the reaction tank 1;

[0038] At the same time, the driving pump 23 is powered on, and sometimes the driving pump 23 sucks the solid-liquid mixture inside the reaction tank 1 into the inside of the liquid extraction pipe 22, and makes the solid-liquid mixture enter the inside of the mixing tank 3 through the liquid extraction pipe 22 and the connecting pipe 21, and sometimes the solid-liquid mixture mixes with the solid inside the mixing tank 3, and finally the solid-liquid mixture and the solid crushed objects fall together on the inner wall of the discharge pipe 13;

[0039] When the driving shaft 7 drives the eccentric sleeve 6 to rotate, the eccentric sleeve 6 drives the spiral blade 14 to rotate through the linkage shaft 12. At this time, the spiral blade 14 does not convey the mixture, but drives the mixture to move upward. Since the mixture has formed a fluid structure, the reverse conveying of the spiral blade 14 and the multiple protrusions on the spiral blade 14 can extend the time that the fluid stays in the discharge pipe 13, and can also play a role in re-mixing the mixture, thereby accelerating the reaction process.

[0040] Finally, the above mixture will fall into the interior of the stirring shaft 15 through the discharge pipe 13. Due to the continuous operation of the driving pump 23, the interior of the stirring shaft 15 will be continuously pressurized, so that the mixture inside the stirring shaft 15 will be ejected into the interior of the reaction tank 1 through the holes in the middle of the stirring shaft 15, the mounting ring 16 and the stirring paddle 17, and mixed with the raw materials inside the reaction tank 1 again. At the same time, as the linkage shaft 12 drives the stirring shaft 15 to rotate, the ejected mixture can also play a role in stirring the raw materials inside the reaction tank 1, thereby increasing the reaction rate of the reactants inside the reaction tank 1, thereby improving the production efficiency of the catalyst.

Claims

1. A feed device with pretreatment function for catalyst production, characterized in that: include: A reaction tank (1), wherein a top cover (2) is fixedly provided on the top of the reaction tank (1); A feed pretreatment component is arranged in the middle of the top cover (2), and is used to premix a solid-liquid mixture entering the reaction tank (1). The feed pretreatment component comprises a mixing tank (3) fixedly connected to the middle of the top cover (2), the inner wall of the mixing tank (3) is fixedly provided with a guide cover (4) through a bracket, and the inner wall of the guide cover (4) is fixedly connected to a positioning cover (5), the inner wall of the positioning cover (5) is rotatably connected to an eccentric sleeve (6), the top of the eccentric sleeve (6) is fixedly connected to a driving shaft (7), the inner wall of the eccentric sleeve (6) is movably connected to an eccentric tube (8), the bottom surface of the eccentric tube (8) is fixedly connected to a moving cone (9), and the moving cone ( 9) movably connected to the surface of the bottom of the positioning cover (5), the surface of the moving cone (9) is fixedly connected to a crushing cone (10), the inner wall of the mixing tank (3) corresponding to the position of the crushing cone (10) is fixedly connected to a fixed cone (11), the top of the inner wall of the eccentric sleeve (6) is fixedly connected to a linkage shaft (12), and the linkage shaft (12) movably penetrates and extends to the bottom of the eccentric tube (8), and the linkage shaft (12) does not contact the inner wall of the eccentric tube (8), the bottom of the mixing tank (3) is fixedly connected to a discharge pipe (13), the surface of the linkage shaft (12) corresponding to the position of the discharge pipe (13) is fixedly connected to a spiral blade (14), and the surface of the spiral blade (14) is provided with a plurality of protrusions; A stirring assembly is arranged at the bottom of the feed pretreatment assembly, the stirring assembly is used to stir the reactants inside the reaction tank (1), the stirring assembly comprises a stirring shaft (15) rotatably connected to the bottom of the surface of the discharge pipe (13) via a bearing, and the bottom of the linkage shaft (12) is fixedly connected to the inner wall of the stirring shaft (15) via a bracket, and a stirring paddle (17) is fixedly provided on the surface of the stirring shaft (15).

2. The feed device with pretreatment function for catalyst production according to claim 1, characterized in that: The inner diameter of the top of the moving cone (9) is smaller than the inner diameter of the bottom of the positioning cover (5), so that the moving cone (9) will not separate from the surface of the positioning cover (5). The driving shaft (7) is driven by a servo motor, and the interior of the reaction tank (1) is connected to the interior of the discharge pipe (13).

3. The feed device with pretreatment function for catalyst production according to claim 2, characterized in that: A mounting ring (16) is fixedly connected to the surface of the stirring shaft (15) corresponding to the position of the stirring paddle (17), and the stirring paddle (17) is fixedly connected to the surface of the mounting ring (16). The stirring paddle (17), the mounting ring (16) and the middle of the stirring shaft (15) are respectively provided with interconnecting through holes, so that the interior of the stirring shaft (15) is connected to the interior of the reaction tank (1).

4. The feed device with pretreatment function for catalyst production according to claim 3, characterized in that: The mixing tank (3) is a cylindrical structure with sealed ends. The driving shaft (7) movably penetrates and extends to the top of the mixing tank (3) via a bearing. A rotating cover (19) is rotatably provided on the surface of the top of the mixing tank (3). The rotating cover (19) is rotatably connected to the surface of the driving shaft (7) via a bearing. The rotating cover (19) and the top of the mixing tank (3) are respectively provided with a feeding groove (20), so that the rotating cover (19) and the feeding groove (20) on the mixing tank (3) are intertwined to achieve a sealing effect.

5. The feed device with pretreatment function for catalyst production according to claim 4, characterized in that: A connecting pipe (21) communicating with the interior of the mixing tank (3) is fixedly connected to the surface of the mixing tank (3); one end of the connecting pipe (21) is fixedly connected to a liquid extraction pipe (22) communicating with the interior of the connecting pipe (21); a driving pump (23) is fixedly connected to the middle of the liquid extraction pipe (22); the driving pump (23) is fixedly connected to the top of the top cover (2); and one end of the liquid extraction pipe (22) away from the connecting pipe (21) is fixedly passed through the top cover (2) and extends to the interior of the reaction tank (1).

6. The feed device with pretreatment function for catalyst production according to claim 5, characterized in that: The surface of the stirring shaft (15) is rotatably connected to a fixed bracket (18) via a bearing, and the fixed bracket (18) is fixedly connected to the inner wall of the reaction tank (1), and the bottom of the stirring shaft (15) is rotatably connected to the bottom of the inner wall of the reaction tank (1) via a sealed bearing.

7. The feed device with pretreatment function for catalyst production according to claim 1, characterized in that: Both ends of the reaction tank (1) are respectively fixedly provided with feeding pipes (24) for adding raw materials into the reaction tank (1), and the interior of the feeding pipes (24) is connected to the interior of the reaction tank (1).

8. The feed device with pretreatment function for catalyst production according to claim 6, characterized in that: The liquid extraction pipe (22) is located at the edge of the inner wall of the reaction tank (1) so that the liquid extraction pipe (22) does not affect the normal rotation of the stirring paddle (17), and the liquid extraction pipe (22) is located at the bottom of the reaction tank (1) and does not contact the inner wall of the bottom of the reaction tank (1).

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