A bactericide raw material adding, stirring and mixing device

Abstract

The utility model discloses a bactericide raw material adds stirring mixing device, including frame, the load ring of fixed connection in the frame upper end, the stirring jar of fixed connection in the inner wall of load ring, the installation cover of screw thread installation in the inner wall of stirring jar upper end, the motor of fixed connection in the installation cover upper end, the vertical tube of fixed connection in the load ring upper end, set up in the first solenoid valve of vertical tube lateral wall upper portion, a plurality of arc -shaped pipes of fixed connection in the lateral wall of vertical tube, set up second solenoid valve on arc -shaped pipe, the first liquid injection pipe of fixed connection on arc -shaped pipe, set up third solenoid valve and fixed connection on arc -shaped pipe near stirring jar one end multiple communication pipes. The utility model has can realize the advantage that the initial mixing efficiency and the evenness of the advantage of significantly improving are improved to multiple points, layering and accurate feeding.

Description

Technical Field

[0001] This utility model relates to the field of chemical machinery technology, specifically to a device for adding, stirring, and mixing bactericide raw materials. Background Technology

[0002] In the production process of bactericides, it is often necessary to thoroughly mix various liquid raw materials with solid carriers or other liquid materials.

[0003] Currently, existing mixing devices typically have only a single feed port at the top of the mixing tank. Various liquid raw materials must be added sequentially from the same position at the top of the tank. When multiple liquid raw materials with large differences in density and viscosity need to be added, all raw materials enter from the top surface, which easily prolongs the initial mixing time due to material stratification. In particular, it is difficult to quickly transport heavy liquid materials to the bottom of the tank or effectively disperse light liquid materials below the liquid surface. This results in the stirring system requiring more time and energy to achieve uniform mixing throughout the entire area, which restricts further improvement in stirring efficiency.

[0004] Therefore, existing mixing devices cannot quickly introduce different types of liquid raw materials into different depths within the tank, making it difficult to optimize the initial distribution of materials from the source, and further improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a bactericide raw material addition and mixing device, which has the advantages of enabling multi-point, layered and precise feeding, thereby significantly improving the initial mixing efficiency and uniformity, and solving the problems in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A bactericide raw material addition and mixing device includes a frame, a support ring fixed to the upper end of the frame, a mixing tank fixed to the inner wall of the support ring, a mounting cover threaded onto the inner wall of the upper end of the mixing tank, a motor fixed to the upper end of the mounting cover, a riser fixed to the upper end of the support ring, a first solenoid valve disposed on the upper part of the side wall of the riser, a plurality of arc-shaped pipes fixed to the side wall of the riser, a second solenoid valve disposed on the arc-shaped pipe, a first injection pipe fixed to the arc-shaped pipe, a third solenoid valve disposed on the first injection pipe, a plurality of connecting pipes fixed to the arc-shaped pipe near the end of the mixing tank, at least one pump body and a fixed box disposed outside the frame, a plurality of first tanks opened at the upper end of the fixed box, a second injection pipe fixed to one end of the arc-shaped pipe, a fourth solenoid valve disposed on the second injection pipe, and a drainage assembly disposed at the lower end of the mixing tank. The pump body's pumping end is connected to one of the first tanks via a hose, and the pump body's outlet end is connected to a riser, a first injection pipe, or a second injection pipe via a pipe. The end of the connecting pipe near the center of the mixing tank passes through the side wall of the mixing tank and extends into the interior of the mixing tank; The lower end of the motor output shaft passes through the mounting cover and is fixedly connected to a mixing component. The lower end of the mixing component is fixedly connected to a fixed plate, and the lower end of the fixed plate is equipped with an auxiliary stirring component.

[0007] Preferably, multiple arc-shaped tubes are equidistantly distributed in the vertical direction, and the interior of each arc-shaped tube is interconnected with the interior of the riser.

[0008] It is worth noting that this design allows liquid raw materials to be distributed to each layer of arc-shaped pipes via risers, enabling multi-height and all-round liquid injection. This avoids localized uneven concentration caused by concentrated raw material injection and significantly improves mixing uniformity. The equidistant distribution ensures that different height areas in the mixing tank can quickly contact the raw materials, shortening the mixing cycle. Furthermore, the interconnected structure between each arc-shaped pipe and the riser simplifies the pipeline design, reduces assembly complexity, and improves the stability and reliability of the device operation.

[0009] Preferably, a feeding cylinder is fixedly connected through the upper end of the mounting cover, and a cover plate is threaded onto the inner wall of the upper end of the feeding cylinder.

[0010] It is worth noting that the design of the feeding cylinder through the mounting cover facilitates the addition of solid raw materials or supplementary raw materials without the need to disassemble the mounting cover, thus improving the feeding efficiency. The threaded cover plate can effectively seal the feeding cylinder, preventing raw materials from splashing or external impurities from entering during the mixing process, ensuring the purity of the bactericide raw materials. The detachable design of the cover plate facilitates the cleaning and maintenance of the feeding cylinder.

[0011] Preferably, the drainage assembly includes a liquid outlet pipe fixed to the lower end of the mixing tank and a fifth solenoid valve disposed on the liquid outlet pipe.

[0012] It is worth noting that the combination of the liquid outlet pipe and the fifth solenoid valve enables the rapid discharge of the mixed material.

[0013] Preferably, the mixing assembly includes a stirring rod fixed to the lower end of the motor output shaft and a stirring paddle fixed to the side wall of the stirring rod.

[0014] It is worth noting that the stirring rod is fixedly connected to the motor output shaft, which drives the stirring paddle to rotate at high speed. The stirring paddle can generate a combined radial and axial stirring force on the raw materials, breaking the stratification of the raw materials and promoting full contact between the components.

[0015] Preferably, there is a gap between the lower end of the fixed plate and the bottom surface of the inner wall of the mixing tank.

[0016] It is worth noting that this gap provides a flow channel for the raw materials at the bottom of the mixing tank, avoiding the accumulation of raw materials caused by the fixed plate sticking to the bottom of the tank, ensuring that the raw materials at the bottom fully participate in the mixing and improving the overall mixing uniformity. At the same time, the gap can reduce the frictional resistance between the fixed plate and the bottom of the tank, reduce the operating load of the motor, save energy, and extend the service life of the device's transmission components.

[0017] Preferably, the auxiliary stirring assembly includes a conical cylinder fixed to the lower end of the fixed plate, a plurality of second grooves extending through the side wall of the conical cylinder, and a fixing ring fixed to the lower end of the conical cylinder, with a gap between the lower end of the fixing ring and the bottom surface of the inner wall of the stirring tank.

[0018] It is worth noting that when the conical cylinder rotates, it guides the raw materials at the bottom, promotes the upward flow of the raw materials, and forms convection with the upper stirring components, thereby enhancing the mixing effect; the fixing ring reinforces the lower end of the conical cylinder; when the conical cylinder rotates, the mixture passes through the second tank, improving the mixing effect.

[0019] Preferably, the auxiliary stirring assembly includes a column fixed to the lower end of the fixed plate, a plurality of inclined blocks fixed to the side wall of the column, and a scraper fixed to the lower end of the inclined blocks, the lower end of the scraper being in contact with the bottom surface of the inner wall of the mixing tank.

[0020] It is worth noting that the scraper is in contact with the bottom of the tank. When rotating, it can scrape off the raw materials attached to the bottom of the tank, avoid residual lumps, ensure full utilization of raw materials, and prevent residual raw materials from affecting the subsequent mixing quality. The inclined block can shear and push the raw materials at the bottom, promote the flow of raw materials, and enhance the mixing effect.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, by setting up a multi-layer liquid injection system consisting of a riser, multiple vertically equidistantly distributed arc-shaped pipes and connecting pipes, and with the independent control of the pump body and multiple solenoid valves, realizes the function of accurately, synchronously or sequentially injecting various liquid raw materials into different height positions in the mixing tank. This structure allows liquids with different densities and viscosities to directly enter the mixing area with similar characteristics. For example, heavy liquids can be injected from the bottom layer, and light liquids can be injected from the middle and upper layers, which greatly optimizes the initial distribution state of the materials and effectively avoids the initial stratification problem caused by all raw materials being put in from a single position at the top. It significantly shortens the time required to achieve uniform mixing throughout the entire area and improves the mixing efficiency. 2. The main stirring is carried out by the motor-driven mixing component, while the auxiliary stirring component at the bottom of the fixed plate works together to form a three-dimensional composite stirring flow field. The auxiliary stirring component is specifically designed to strengthen the stirring and scraping of the bottom area of ​​the mixing tank, ensuring that the heavy raw materials deposited at the bottom of the tank can be effectively lifted and mixed, solving the technical problem of insufficient mixing of materials at the bottom of the tank. The combination of main and auxiliary stirring allows the materials in each area of ​​the tank to be subjected to strong shearing and convection, thereby achieving a more uniform mixing effect in a shorter time. 3. The integrated feeding cylinder of this utility model is used for adding solid raw materials, and the automated drainage component consisting of the liquid outlet pipe and the fifth solenoid valve makes the entire feeding, mixing and discharging process smoother, more efficient and controllable, and easy to use. Attached Figure Description

[0022] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The image shown is a top view of the arc-shaped tube of this utility model; Figure 3 The diagram shown is a three-dimensional structural schematic of the second injection tube of this utility model. Figure 4 The diagram shown is a three-dimensional structural schematic of the feeding cylinder of this utility model; Figure 5 The diagram shown is a three-dimensional structural schematic of the liquid outlet tube of this utility model. Figure 6 The diagram shown is a three-dimensional cross-sectional view of the first embodiment of the auxiliary stirring component of this utility model. Figure 7 The diagram shown is a three-dimensional cross-sectional view of a second embodiment of the auxiliary stirring assembly of this utility model.

[0023] Reference numerals: 1. Frame; 2. Bearing ring; 3. Mixing tank; 4. Mounting cover; 5. Motor; 6. Riser; 7. First solenoid valve; 8. Arc-shaped pipe; 9. Second solenoid valve; 10. First injection pipe; 11. Third solenoid valve; 12. Connecting pipe; 13. Pump body; 14. Fixing box; 15. First tank; 16. Second injection pipe; 17. Fourth solenoid valve; 18. Feeding cylinder; 19. Cover plate; 20. Discharge pipe; 21. Fifth solenoid valve; 22. Stirring rod; 23. Stirring paddle; 24. Fixing disc; 25. Conical cylinder; 26. Second tank; 27. Fixing ring; 28. Column; 29. ​​Inclined block; 30. Scraper. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To address the problem in existing technologies where all liquid raw materials are added from the same position at the top of the tank, resulting in uneven initial material distribution and easy stratification, thus limiting stirring efficiency, the following technical solution is proposed. Please refer to [link / reference]. Figures 1-7 ; A bactericide raw material addition and mixing device includes a frame 1, a support ring 2 fixed to the upper end of the frame 1, a mixing tank 3 fixed to the inner wall of the support ring 2, a mounting cover 4 threaded onto the upper inner wall of the mixing tank 3, a motor 5 fixed to the upper end of the mounting cover 4, a riser 6 fixed to the upper end of the support ring 2, a first solenoid valve 7 disposed on the upper side wall of the riser 6, a plurality of arc-shaped pipes 8 fixed to the side wall of the riser 6, a second solenoid valve 9 disposed on the arc-shaped pipes 8, and a motor 5 fixed to the upper end of the mounting cover 4. The components include: a first injection pipe 10 on the arc-shaped tube 8; a third solenoid valve 11 disposed on the first injection pipe 10; multiple connecting pipes 12 fixed to one end of the arc-shaped tube 8 near the mixing tank 3; at least one pump body 13 and a fixed box 14 disposed outside the frame 1; multiple first tanks 15 opened at the upper end of the fixed box 14; a second injection pipe 16 fixed to one end of the arc-shaped tube 8; a fourth solenoid valve 17 disposed on the second injection pipe 16; and a drainage assembly disposed at the lower end of the mixing tank 3. The pump body 13 is connected to the inside of one of the first tanks 15 via a hose, and the pump body 13 is connected to the riser 6, the first injection pipe 10 or the second injection pipe 16 via a pipe. One end of the connecting pipe 12, near the center of the mixing tank 3, passes through the side wall of the mixing tank 3 and extends into the interior of the mixing tank 3; The lower end of the output shaft of motor 5 passes through the mounting cover 4 and is fixedly connected to a mixing component. The lower end of the mixing component is fixedly connected to a fixed plate 24, and the lower end of the fixed plate 24 is provided with an auxiliary stirring component.

[0026] In use, the mixed solution can be placed into the first tank 15, and the pump 13 can be turned on to draw the solution in the first tank 15 into the riser 6. The first solenoid valve 7 and multiple second solenoid valves 9 can be turned on, and the third solenoid valve 11 and the fourth solenoid valve 17 can be turned off. The mixture will then enter the mixing tank 3 through multiple connecting pipes 12 at different heights, which facilitates rapid mixing of the mixture in the mixing tank 3. In addition, a single solution can be drawn into the first injection pipe 10 through the pump 13, and the third solenoid valve 11 can be turned on and the second solenoid valves 9 and the fourth solenoid valve 17 can be turned off. The solution can be directly input into the arc-shaped pipe 8 at a certain height, and finally flow into the mixing tank 3 through the connecting pipe 12. When it is necessary to add different solutions at the same time, multiple pumps 13 can be set up. In addition, the water outlet of the pump 13 can be connected to the water inlet of the second injection pipe 16 for use.

[0027] In this embodiment, specifically: multiple arc-shaped tubes 8 are equidistantly distributed in the vertical direction, and the interior of each arc-shaped tube 8 is interconnected with the interior of the riser 6.

[0028] In this embodiment, specifically: a feeding cylinder 18 is fixedly connected through the upper end of the mounting cover 4, and a cover plate 19 is threadedly installed on the inner wall of the upper end of the feeding cylinder 18.

[0029] In this embodiment, specifically: the drainage assembly includes a liquid outlet pipe 20 fixed to the lower end of the mixing tank 3 and a fifth solenoid valve 21 disposed on the liquid outlet pipe 20.

[0030] In this embodiment, specifically: the mixing component includes a stirring rod 22 fixed to the lower end of the output shaft of the motor 5 and a stirring paddle 23 fixed to the side wall of the stirring rod 22.

[0031] In this embodiment, specifically, there is a gap between the lower end of the fixed plate 24 and the bottom surface of the inner wall of the mixing tank 3.

[0032] Example 1: In this example, specifically: the auxiliary stirring assembly includes a conical cylinder 25 fixed to the lower end of the fixed plate 24, multiple second grooves 26 extending through the side wall of the conical cylinder 25, and a fixing ring 27 fixed to the lower end of the conical cylinder 25. There is a gap between the lower end of the fixing ring 27 and the bottom surface of the inner wall of the mixing tank 3. When the conical cylinder 25 rotates, it exerts a unique guiding effect on the surrounding raw materials, guiding the raw materials at the bottom of the tank to flow upward and merge with the flow field formed by the upper stirring blade 23, creating a strong axial convection, which greatly enhances the three-dimensionality and efficiency of the mixing. The fixing ring 27 mainly plays a structural strengthening role, while also assisting in disturbing the fluid during rotation. When the mixed liquid passes through the second grooves 26, it can generate local vortices, further refining the mixing process. The gap between the bottom of the fixing ring 27 and the bottom surface of the inner wall of the mixing tank 3 ensures the unobstructed flow of the fluid at the bottom. Together with the conical cylinder 25, it solves the technical problem of insufficient mixing of high-viscosity or easily sedimenting raw materials at the bottom of the tank.

[0033] Example 2: In this example, specifically: the auxiliary stirring assembly includes a column 28 fixed to the lower end of the fixed plate 24, multiple inclined blocks 29 fixed to the side wall of the column 28, and a scraper 30 fixed to the lower end of the inclined blocks 29. The lower end of the scraper 30 is in contact with the bottom surface of the inner wall of the mixing tank 3. The close contact between the scraper 30 and the bottom surface of the inner wall of the mixing tank 3 allows it to continuously scrape off the raw material residue adhering to the bottom of the tank when rotating, completely preventing agglomeration. This ensures full utilization of the raw materials and facilitates subsequent cleaning and maintenance. When the inclined blocks 29 rotate with the column 28, they apply effective shearing and axial pushing forces to the raw materials at the bottom, destroying the sedimentation layer structure and promoting the flow of raw materials towards the central area, complementing the main stirring. This structure is particularly suitable for processing formulations that are prone to adhesion or sensitive to residues, ensuring the stability of the mixing quality and the consistency of production batches.

[0034] Working principle: When in use, the operator first places one or more liquid raw materials to be mixed into multiple first tanks 15 at the top of the fixed box 14, and then starts at least one pump 13. The pumping end of the pump 13 is connected to the designated first tank 15 through a hose to extract the liquid raw materials inside. If the same raw material needs to be injected simultaneously from different heights of the mixing tank 3, the outlet of the pump body 13 is connected to the riser 6 through a pipe, and the first solenoid valve 7 and all the second solenoid valves 9 on the arc-shaped pipes 8 are opened. At the same time, the third solenoid valve 11 on the first injection pipe 10 and the fourth solenoid valve 17 on the second injection pipe 16 are closed. At this time, the liquid raw material is diverted through the riser 6 to the arc-shaped pipes 8 that are equidistantly distributed in the vertical direction. Finally, it is injected into the tank from different heights of the side wall of the mixing tank 3 through multiple connecting pipes 12 fixed to the arc-shaped pipes 8 near the end of the mixing tank 3. This process realizes multi-layer, three-dimensional initial material distribution and effectively optimizes the initial distribution of raw materials. If a specific type of raw material needs to be injected from a predetermined height, the outlet of the pump body 13 can be switched to the first injection pipe 10 connected to the corresponding height, and the third solenoid valve 11 on the first injection pipe 10 can be opened, while the second solenoid valve 9 and the fourth solenoid valve 17 are closed, so as to achieve precise single-layer injection. When multiple different raw materials need to be added at the same time, multiple pump bodies 13 are configured, and their water outlets are connected to the riser 6 or different first injection pipes 10 and second injection pipes 16 respectively. By controlling the opening and closing status of the corresponding solenoid valves on each pipeline, multiple raw materials can be added synchronously or sequentially according to a preset plan. For solid or powdered raw materials, the cover plate 19 threaded on the inner wall of the upper end of the feeding cylinder 18 can be unscrewed, and the feeding cylinder 18, which is fixed to the upper end of the mounting cover 4, can be directly fed into the mixing tank 3. During or after feeding, the motor 5 fixed to the upper end of the mounting cover 4 is started. The output shaft of the motor 5 drives the stirring rod 22 fixed to its lower end and the stirring paddle 23 fixed to the side wall of the stirring rod 22 to rotate at high speed for main stirring. At the same time, the fixed plate 24 fixed to the lower end of the stirring rod 22 rotates accordingly and drives the auxiliary stirring component at its lower end to work. In Example 1, the auxiliary stirring component is a conical cylinder 25 fixed to the lower end of the fixed plate 24. When it rotates, it guides and lifts the raw material at the bottom. Multiple second grooves 26 that are opened through the side wall of the conical cylinder 25 enhance fluid disturbance. The fixed ring 27 fixed to the lower end of the conical cylinder 25 and the gap between it and the bottom surface of the inner wall of the mixing tank 3 jointly promote the circulation and mixing of the raw material at the bottom. In Example 2, the auxiliary stirring component is a column 28 fixed to the lower end of the fixed plate 24. Multiple inclined blocks 29 fixed to the side wall of the column 28 shear and push the raw material. The scraper 30 fixed to the lower end of the inclined block 29 can effectively scrape off the adhering material at the bottom of the tank because its lower end is in contact with the bottom surface of the inner wall of the mixing tank 3. The gap between the lower end of the fixed plate 24 and the bottom surface of the inner wall of the mixing tank 3 ensures the flow space of the bottom material; the synergistic effect of the main mixing component and the auxiliary mixing component forms a complex and efficient composite flow field in the mixing tank 3, ensuring that all raw materials are fully and evenly mixed in a short time. After mixing is complete, the fifth solenoid valve 21, which is fixed to the liquid outlet pipe 20 at the lower end of the mixing tank 3, is opened to discharge the finished mixture, thus completing one working cycle.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A device for adding, stirring, and mixing bactericide raw materials, characterized in that: Includes a frame (1), a bearing ring (2) fixed to the upper end of the frame (1), a mixing tank (3) fixed to the inner wall of the bearing ring (2), a mounting cover (4) threaded onto the inner wall of the upper end of the mixing tank (3), a motor (5) fixed to the upper end of the mounting cover (4), a riser (6) fixed to the upper end of the bearing ring (2), a first solenoid valve (7) set on the upper part of the side wall of the riser (6), multiple arc-shaped pipes (8) fixed to the side wall of the riser (6), a second solenoid valve (9) set on the arc-shaped pipe (8), and a third solenoid valve (9) fixed on the arc-shaped pipe (8). A liquid injection pipe (10), a third solenoid valve (11) disposed on the first liquid injection pipe (10), a plurality of connecting pipes (12) fixed to one end of the arc-shaped pipe (8) near the mixing tank (3), at least one pump body (13) and a fixed box (14) disposed outside the frame (1), a plurality of first tanks (15) opened at the upper end of the fixed box (14), a second liquid injection pipe (16) fixed to one end of the arc-shaped pipe (8), a fourth solenoid valve (17) disposed on the second liquid injection pipe (16) and a drainage assembly disposed at the lower end of the mixing tank (3); The pump body (13) is connected to the inside of one of the first tanks (15) via a hose, and the pump body (13) is connected to the riser (6), the first injection pipe (10) or the second injection pipe (16) via a pipe. One end of the connecting pipe (12) near the center of the mixing tank (3) passes through the side wall of the mixing tank (3) and extends into the interior of the mixing tank (3); The lower end of the output shaft of the motor (5) passes through the mounting cover (4) and is fixedly connected to a mixing component. The lower end of the mixing component is fixedly connected to a fixed plate (24), and the lower end of the fixed plate (24) is provided with an auxiliary stirring component.

2. The bactericide raw material addition and mixing device according to claim 1, characterized in that: Multiple arc-shaped tubes (8) are equidistantly distributed in the vertical direction, and the interior of each arc-shaped tube (8) is interconnected with the interior of the riser (6).

3. The bactericide raw material addition and mixing device according to claim 1, characterized in that: The upper end of the mounting cover (4) is fixedly connected to the feeding cylinder (18), and the inner wall of the upper end of the feeding cylinder (18) is threaded with a cover plate (19).

4. The bactericide raw material addition and mixing device according to claim 1, characterized in that: The drainage assembly includes an outlet pipe (20) fixed to the lower end of the mixing tank (3) and a fifth solenoid valve (21) disposed on the outlet pipe (20).

5. The bactericide raw material addition and mixing device according to claim 1, characterized in that: The mixing assembly includes a stirring rod (22) fixed to the lower end of the output shaft of the motor (5) and a stirring paddle (23) fixed to the side wall of the stirring rod (22).

6. The bactericide raw material addition and mixing device according to claim 1, characterized in that: There is a gap between the lower end of the fixed plate (24) and the bottom surface of the inner wall of the mixing tank (3).

7. The bactericide raw material addition and mixing device according to claim 1, characterized in that: The auxiliary stirring assembly includes a conical cylinder (25) fixed to the lower end of the fixed plate (24), a plurality of second grooves (26) extending through the side wall of the conical cylinder (25), and a fixing ring (27) fixed to the lower end of the conical cylinder (25). There is a gap between the lower end of the fixing ring (27) and the bottom surface of the inner wall of the stirring tank (3).

8. The bactericide raw material addition and mixing device according to claim 1, characterized in that: The auxiliary stirring assembly includes a column (28) fixed to the lower end of the fixed plate (24), multiple inclined blocks (29) fixed to the side wall of the column (28), and a scraper (30) fixed to the lower end of the inclined blocks (29). The lower end of the scraper (30) is in contact with the bottom surface of the inner wall of the mixing tank (3).

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