A silicone structural sealant production reactor
By introducing a motor-driven stirring rack and a timer-controlled telescopic component into the silicone structural sealant production reactor, along with the use of heating components, the problems of low efficiency and unevenness in traditional stirring are solved, achieving a more efficient and uniform mixing effect and reducing the difficulty of equipment manufacturing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ANHUI SMART NEW MATERIALS CO LTD
- Filing Date
- 2023-09-20
- Publication Date
- 2026-06-19
AI Technical Summary
Traditional silicone structural sealant production reactors rely on rotating stirring rods, resulting in low and uneven stirring efficiency. This leads to high requirements for equipment power and reliability, and makes manufacturing difficult.
The design includes a tank, main shaft, motor, drive wheel, driven wheel, stirring frame, telescopic component, and heating component. The motor drives the drive wheel and driven wheel to rotate the stirring frame. Combined with a timer to control the telescopic component and heating component, the stirring frame is spatially separated and heated within the tank, improving stirring efficiency and uniformity.
It improves stirring efficiency and uniformity, reduces the manufacturing difficulty of the reactor, reduces the power requirements of the equipment, and enhances the speed and uniformity of raw material mixing.
Smart Images

Figure CN117225345B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of building adhesive production equipment, specifically a silicone structural sealant production reactor. Background Technology
[0002] Silicone structural sealant is a type of sealant with silicone as its main component. It is made from organosilicon compounds through a special processing technology, resulting in excellent sealing performance and resistance to high temperatures and weathering. Silicone structural sealant can be applied in various fields such as construction engineering, automotive manufacturing, electronics, and aerospace for sealing, filling gaps, and bonding. It forms a soft and reliable sealing layer on various material surfaces, exhibiting good anti-aging properties and withstanding significant temperature changes and chemical corrosion, effectively protecting the safety and stability of the sealed object.
[0003] In the production process of silicone structural sealants, the following aspects need to be considered to control their quality and performance: Raw material selection: Select high-quality silicone materials to ensure that their chemical purity and physical properties meet requirements, as well as the necessary hardness, elasticity, and temperature resistance. Formulation control: Rationally control the formulation ratio of the silicone structural sealant, including silicone resin, fillers, crosslinking agents, etc., to ensure that the product has good overall performance. Mixing process: Control the temperature, time, and speed during the mixing process to ensure that the raw materials are fully and evenly mixed, avoiding problems such as uneven dispersion and bubbles. Curing conditions: Select appropriate curing conditions, including temperature and time, according to product requirements to ensure that the silicone structural sealant can fully cure and crosslink to achieve the required performance. Testing and quality control: Conduct strict quality control during the production process, including testing and inspection of raw materials and finished products, to ensure that the product meets the prescribed standards and requirements. Through the above control measures, the silicone structural sealant can be effectively ensured to have stable physical properties and good performance to meet the needs of different application fields.
[0004] In the production process of silicone structural sealants, it is necessary to stir the structural adhesive raw materials to achieve a more uniform mixture, thereby improving the production efficiency and quality of the structural adhesive. Traditional reactors typically rely solely on the movement of a stirring rod within the structural adhesive raw materials to drive the movement of the raw materials and achieve mixing. However, the mixing effect of this traditional stirring method depends on the rotation speed of the stirring rod and the contact area between the stirring rod and the raw materials. Due to the viscosity of structural adhesive materials, high-speed stirring or the use of multiple stirring rods places higher demands on the power and reliability of the reactor, which in turn makes the manufacturing of the reactor more difficult. Summary of the Invention
[0005] To overcome the shortcomings of existing technologies, this invention proposes a reaction vessel for producing silicone structural sealants. This invention primarily addresses the problems of low stirring efficiency and poor stirring uniformity when traditional reaction vessels, which rely solely on the rotation of a stirring rod for stirring, are used in the production of structural sealants.
[0006] The technical solution adopted by this invention to solve its technical problem is: a silicone structural sealant production reactor, comprising a tank body, a main shaft, a motor, a driving wheel, a driven wheel, a stirring frame, a telescopic component, and a heating component; the motor is arranged on the upper part of the tank body; the motor is fixedly connected to the tank body via a bracket; the main shaft is arranged in the middle of the tank body; the main shaft is rotatably connected to the tank body; the driven wheel is arranged at one end of the main shaft; the driven wheel is fixedly connected to the main shaft; the driving wheel is arranged at one end of the motor; the driving wheel is fixedly connected to the output shaft of the motor; the driving wheel and the driven wheel are connected by belt drive; the stirring frame is arranged at uneven intervals inside the tank body; one side of the stirring frame is connected to the main shaft; the telescopic component is evenly spaced on the tank body; the telescopic component... The internal space of the tank is divided; a heating element is provided on the tank; the heating element is used to heat the stirring rack; the telescopic component includes a fixed plate, a first movable plate, a second movable plate, and an electric push rod; elongated holes are spaced apart on the tank; a fixed plate is provided on one side of each elongated hole; the fixed plate is hollow; one end of the fixed plate is fixedly connected to the tank; the first movable plate is provided on the inner side of the fixed plate; the first movable plate is slidably connected to the fixed plate; the second movable plate is provided on the inner side of the first movable plate; the second movable plate is slidably connected to the first movable plate; the electric push rods are evenly spaced on the inner side of the fixed plate; one end of the electric push rod is fixedly connected to the inner wall of the fixed plate; one end of the movable rod of the electric push rod is fixedly connected to one side of the second movable plate.
[0007] During the production of structural adhesives, the raw materials need to be stirred to achieve a more uniform mixture, thereby improving production efficiency and quality. Traditional reactors typically rely solely on the movement of a stirring rod around the raw materials to achieve mixing. However, the effectiveness of this traditional stirring method depends heavily on the rotation speed of the stirring rod and the contact area between the rod and the raw materials. Due to the viscosity of structural adhesives, high-speed stirring or the use of multiple stirring rods places high demands on the reactor's power and equipment reliability, which can negatively impact the manufacturing process. The challenge lies in controlling the rotation of the motor, which in turn drives the driven wheel, which in turn drives the main shaft, causing the stirring frame to rotate inside the tank. A timer records the rotation time of the stirring frame (since it rotates at a constant speed, the rotation angle can also be recorded). The timer transmits this information to the controller. Just after the stirring frame passes the telescopic component, the controller extends the telescopic component into the tank, thus dividing the internal space. As the stirring frame continues to rotate, the space between the stirring frame and the next telescopic component (denoted as space A) decreases. The mixing rack leaves only small gaps between two adjacent vertical support members (denoted as gap B). This allows the volume of space A to decrease by a greater amount than the volume of material flowing out from gap B after the mixing rack rotates at a certain angle. This increases the pressure inside space A, causing the medium inside space A to be forced out of gap B at higher pressure as the mixing rack rotates. This medium then enters the space formed between the mixing rod and the previous telescopic component (denoted as space C), impacting the material inside space C and causing it to flow. This results in faster and more uniform mixing, thus improving the efficiency and uniformity of the mixing process. When the stirring rack approaches the next telescopic component, a timer transmits timing information to the controller. Upon receiving the information, the controller makes a judgment and controls the telescopic component to retract, thus preventing interference between the stirring rack and the telescopic component and ensuring normal stirring. After the telescopic component receives the signal to extend, the movable rod of the electric push rod extends forward, thereby driving the first and second movable plates to move forward. The first and second movable plates then separate the internal space of the tank, thus meeting the stirring requirements. Since the movement can be achieved solely by the electric push rod, the structure of the telescopic component is simple, which helps to reduce the manufacturing difficulty of the reactor.Meanwhile, due to the characteristic of structural adhesives increasing viscosity upon cooling during production, the resistance encountered during mixing increases. Therefore, this solution incorporates a heating element to heat the mixing rack, thereby heating the raw materials during structural adhesive production. This reduces the viscosity of both the structural adhesive and raw materials, making mixing easier and increasing the flowability of the resulting structural adhesive and raw materials. This also enhances the turbulence of the flowing materials, improving the mixing effect.
[0008] Preferably, the heating component includes a first rotary joint, a second rotary joint, a third rotary joint, and a fourth rotary joint; a first channel is formed on the main shaft; a first joint is provided at the upper end of the first channel; the first joint is rotatably connected to the main shaft; the first rotary joint communicates with the interior of the first channel; the outer side of the first rotary joint is connected to the outlet of an external heating device through a pipe; the second rotary joint is provided at the other end of the first channel; the second rotary joint is rotatably connected to the main shaft; the outer side of the second rotary joint is connected to a flexible... The pipe is connected to one end of the stirring rack; the stirring rack is hollow; the first channel is connected to the interior of the stirring rack; the main shaft has a second channel; a third rotary joint is provided at the upper end of the second channel; the third rotary joint is rotatably connected to the main shaft; the outer side of the third rotary joint is connected to the return end of the heating equipment through a pipe; a fourth rotary joint is provided at the lower end of the second channel; the fourth rotary joint is rotatably connected to the main shaft; the outer side of the fourth rotary joint is connected to the other end of the stirring rack through a flexible hose.
[0009] During operation, the heating medium is introduced through channel one into the rotary joint two via an external heating device. It then flows into the mixing frame, circulates within it, and finally enters the rotary joint four. From there, it enters the rotary structure three via channel two, before returning to the return end of the heating device. This cycle heats the mixing frame, reducing the viscosity of the structural adhesive and its raw materials, making mixing easier, and increasing the fluidity of the resulting adhesive and raw materials. This improves the turbulence of the material flow and enhances the mixing effect. Since the main shaft and mixing frame are rotating, direct pipe connections would result in pipe entanglement. Therefore, this solution... By opening Channel 1 and Channel 2 inside the main shaft, and then connecting the two ends of Channel 1 and Channel 2 to the stirring rack and heating equipment through a rotating structure, a flow pipeline for the heat medium is realized. During use, the main shaft and the stirring rack rotate simultaneously. Since the first and third rotating joints are rotatably connected to the main shaft, the pipes connecting the heating equipment and the main shaft will not become entangled during use, allowing the medium to flow smoothly. At the same time, through the second and fourth rotating joints, the medium input from Channel 1 and Channel 2 can flow into all the stirring racks simultaneously, resulting in more uniform heating on the stirring racks without the need for multiple channels, thus simplifying the structure of the heating components and making the production of the reactor simpler.
[0010] Preferably, rotating plates are evenly spaced along one side of the stirring rack in the vertical direction; the rotating plates are rotatably connected to the stirring rack; a first torsion spring is provided at the connection between the rotating plate and the stirring rack, one end of the first torsion spring abuts against the rotating plate; the other end of the first torsion spring abuts against the stirring rack; a limiting block is provided on the stirring rack; the limiting block is fixedly connected to the stirring rack; the limiting block restricts the rotating plates from moving within a horizontal and downward 45° range.
[0011] During operation, structural adhesive is not always produced with a full tank. Often, the tank is not completely filled with raw materials. As the mixing rack rotates, the space A shrinks, and the liquid level rises. Instead of flowing out through gap B, the raw materials move towards the upper cavity of space A, causing the liquid level to rise. While this still increases the pressure within space A, it is lower than when the tank is full. This reduces the velocity of the material flowing out through gap B, consequently decreasing the movement of materials within space C and weakening the mixing effect. Therefore, in this solution, a rotating plate is installed on one side of the mixing rack, horizontally oriented in the axial direction. When the mixing rack rotates and compresses the raw materials, the rising liquid level first presses against the rotating plate, causing it to rotate further. The rotating plate, restricted by the limiting block, creates resistance to the rising liquid surface when it reaches a horizontal position, preventing the liquid level from rising further. This increases the pressure on the raw materials inside space A during rotation, allowing them to be ejected from gap B at a faster speed. This impacts the raw materials in space C, resulting in a larger amplitude of movement and more uniform mixing, leading to better mixing. Furthermore, by limiting the rotating plate's range of motion to horizontal and a 45° downward tilt, the upward movement of the liquid surface inevitably pushes the plate upward, preventing it from remaining vertical during this process. This ensures that the pressure inside space A remains at a high level during the rotation of the stirring rack.
[0012] Preferably, the tank body is provided with an installation cover; one side of the installation cover is fixedly connected to the tank body; the telescopic component is located inside the installation cover; heating rods are evenly spaced on the installation cover; the heating rods are fixedly connected to the installation cover.
[0013] During operation, the telescopic component involves entering and exiting the raw material. After exiting the raw material, the temperature of the telescopic component decreases. Repeated exits further lower the temperature of the first and second movable plates within the telescopic component. This leads to a further decrease in the temperature of the raw material near the first and second movable plates upon re-entry, increasing its viscosity and making it difficult for the first and second movable plates to penetrate the raw material. Furthermore, the highly viscous raw material area formed near the first and second telescopic plates results in a blocky structure in the mixed material, leading to uneven mixing. Therefore, this solution incorporates external heating elements into the telescopic component. The heating rod heats the first and second movable plates as they retract into the fixed plate, maintaining a high temperature. This allows the heating plates to re-enter the raw material, further heating it and reducing resistance during entry. This results in smoother movement of the telescopic components. Heating also prevents the formation of sticky lumps within the raw material, thus avoiding unmixed lumps and improving the uniformity of mixing. Furthermore, heating enhances the fluidity of the raw material, further improving mixing efficiency and uniformity.
[0014] Preferably, a scraping ring is provided on the side of the fixed plate near the first movable plate and on the side of the first movable plate near the second movable plate; the scraping ring is fixedly connected to the fixed plate and the first movable plate respectively.
[0015] During operation, the No. 1 and No. 2 movable plates of the telescopic component come into direct contact with the materials produced in the production process. Since most raw materials are sticky, they adhere to the surfaces of the No. 1 and No. 2 movable plates. When the No. 1 and No. 2 movable plates retract, they carry the raw materials out, potentially leading to the material entering the telescopic component and causing waste and accelerated damage. Therefore, this solution incorporates scraper rings at the positions of the fixed plate and the No. 1 movable plate. During the retraction of the No. 1 and No. 2 movable plates, the scraper rings scrape away the materials adhering to their surfaces, preventing them from being carried out of the tank, reducing waste, and preventing the material from entering the telescopic component and damaging it. This increases the service life of the telescopic component and, consequently, the lifespan of the reactor.
[0016] Preferably, the side plate is provided on the side of the stirring rack near the side wall of the tank; the side plate is rotatably connected to the stirring rack; a second torsion spring is evenly spaced along the vertical direction at the connection between the stirring rack and the side plate; one end of the second torsion spring abuts against the side plate, and the other end of the second torsion spring abuts against the stirring rack; the other side of the side plate is in contact with the inner wall of the tank.
[0017] During operation, the structural adhesive and its raw materials adhere to the inner wall of the tank during the production process. Consequently, the structural adhesive near the tank is difficult to mix, leading to uneven mixing. Therefore, in this solution, a side plate is installed between the mixing rack and the inner wall of the tank, with one side of the side plate in contact with the inner wall. As the mixing rack rotates, the side plate scrapes against the inner wall of the tank, allowing the material adhering to the side wall to separate and mix with other materials inside the tank. This results in more thorough mixing and improved mixing quality. Simultaneously, during material discharge, the side plate scrapes away the material adhering to the side wall, ensuring complete removal of material from the tank and more thorough discharge.
[0018] Preferably, the strength of the second torsion spring gradually decreases from top to bottom.
[0019] During operation, if the side plate is in the set state, it can only push the material horizontally during the feeding process. The material then relies solely on its own gravity to move downwards, resulting in slow material discharge. Therefore, in this solution, the strength of the second torsion spring connecting the side plate is gradually reduced from high to low. As the mixing rack rotates, the resistance experienced by the side plate in the vertical direction is relatively uniform, while the strength of the second torsion spring is inconsistent. This causes a lag deformation in the lower end of the side plate relative to the upper end in the vertical direction, resulting in a downward tilt of the side plate. With the rotation of the mixing rack, the side plate exerts a downward force on the material adhering to the inner wall of the tank, accelerating the downward movement of the material and increasing the discharge rate, thus improving the ease of use of the equipment.
[0020] Preferably, the main shaft has evenly spaced slots along its circumference; a retaining strip is provided on one side of the stirring frame; the retaining strip is fixedly connected to the stirring frame; the retaining strip cooperates with the slots; a top block is provided at the lower part of the slots; one end of the top block abuts against one end of the retaining strip; the top block is fixedly connected to the main shaft by bolts; a rotating sleeve is provided on the outside of the main shaft; the rotating sleeve is tightly fitted with the main shaft; and the rotating sleeve is rotatably connected to the tank body.
[0021] During operation, when installing the mixing rack, the locking strip is inserted into the slot, and then a top block is placed at one end of the slot to hold the locking strip in place, thus restricting the movement of the mixing rack and completing the installation. The mixing rack is designed to be detachable, facilitating replacement if damaged, and simplifying future maintenance. Furthermore, because the main shaft has a slot, directly rotating the main shaft to the tank would reduce the strength of the connection. Therefore, a rotating sleeve is installed at the lower part of the main shaft to fill the slot near the connection point, increasing the strength of the connection, reducing damage, and extending the service life of the equipment.
[0022] The beneficial effects of this invention are as follows:
[0023] 1. In this invention, the controller controls the telescopic component to extend into the tank, thereby dividing the internal space of the tank. As the stirring frame continues to rotate, the space between the stirring frame and the next telescopic component (denoted as space A) decreases. Since the stirring frame only leaves small gaps between two adjacent vertical support rods (denoted as all gaps as gap B), the volume reduction of space A after the stirring frame rotates by an angle is greater than the volume of material flowing out from gap B. This increases the pressure inside space A, causing the medium inside space A to be forced out from gap B at higher pressure as the stirring frame rotates, and then enters the space formed between the stirring rod and the previous telescopic component (denoted as space C). This impacts the material inside space C, causing it to flow and allowing for faster and more uniform mixing, thus improving the efficiency and uniformity of the mixing. As the stirring frame rotates and approaches the next telescopic component, a timer transmits timing information to the controller. Upon receiving the information, the controller makes a decision. The system judges and controls the retraction of the telescopic component to prevent interference between the stirring frame and the telescopic component, thus ensuring normal stirring. After receiving the signal to extend, the electric push rod extends forward, driving the first and second movable plates forward. The first and second movable plates then separate the internal space of the tank, thus meeting the stirring requirements. Since the movement is achieved solely by the electric push rod, the structure of the telescopic component is simple, which helps reduce the manufacturing difficulty of the reactor. Simultaneously, due to the characteristic that the structural adhesive increases in viscosity when cooled, the resistance encountered during stirring increases. Therefore, this solution uses a heating component to heat the stirring frame, thereby heating the raw materials during the structural adhesive production process. This reduces the viscosity of the structural adhesive and its raw materials, making stirring easier and increasing the fluidity of the generated structural adhesive and its raw materials. This improves the turbulence of the raw material flow and enhances the stirring effect.
[0024] 2. In this invention, a first channel and a second channel are opened inside the main shaft. Then, a rotating structure is set to connect the two ends of the first and second channels to the stirring rack and the heating equipment, realizing the flow pipeline of the heat medium. During use, the main shaft and the stirring rack rotate simultaneously. Since the first and third rotating joints are rotatably connected to the main shaft, the pipe connecting the heating equipment and the main shaft will not become entangled during use, thus allowing the medium to flow smoothly. At the same time, through the set second and fourth rotating joints, the medium input from the first and second channels can flow into all the stirring racks at the same time, thus making the heating on the stirring rack more uniform and eliminating the need to open multiple channels. This simplifies the structure of the heating component and makes the production of the reactor simpler.
[0025] 3. In this invention, because the structural adhesive is not always produced with the tank full, the tank is often not completely filled with raw materials. As the mixing rack rotates and space A shrinks, the liquid level not only flows out through gap B, but the raw materials also move towards the upper cavity of space A, causing the liquid level to rise. Although this still increases the pressure inside space A, it is lower than the pressure when the tank is full. This leads to a decrease in the velocity of the material flowing out through gap B, which in turn reduces the movement of the material inside space C, thus weakening the mixing effect. Therefore, in this solution, a rotating plate is installed on one side of the mixing rack, and the rotating plate is horizontally positioned in the y-axis direction. When the mixing rack rotates and squeezes the raw materials, when the liquid level rises, the liquid level first squeezes the rotating plate, thus causing the rotating plate to... The rotation of the plate, restricted by the limiting block, creates resistance to the rising liquid surface when it reaches a horizontal position, preventing the liquid level from rising further. This increases the pressure on the raw materials inside space A during rotation, allowing them to be ejected from gap B at a faster speed. This impacts the raw materials in space C, resulting in a larger amplitude of movement and more uniform mixing, leading to better mixing. Furthermore, by limiting the plate's range of motion to horizontal and a 45° downward tilt, the upward movement of the liquid surface inevitably pushes the plate upward, preventing it from remaining vertical during this process. This ensures that the pressure inside space A remains at a high level during the rotation of the mixing rack.
[0026] 4. In this invention, by adding heating rods to the outside of the telescopic components, the first and second movable plates are heated when they retract into the fixed plate. This allows the first and second movable plates to maintain a high temperature, which in turn heats the raw material when they re-enter it. This increases the temperature of the raw material, reduces the resistance encountered by the first and second movable plates, and makes the movement of the telescopic components smoother. Simultaneously, the heating of the raw material prevents the formation of highly viscous lumps, thus avoiding unmixed lumps and improving the uniformity of mixing. Furthermore, heating increases the fluidity of the raw material, further enhancing the efficiency and uniformity of mixing.
[0027] 5. In this invention, during the operation of the telescopic component, the first and second movable plates are in direct contact with the materials produced in the production process. Since most raw materials are sticky, they adhere to the surfaces of the first and second movable plates. When the first and second movable plates retract, they carry the raw materials out, potentially leading to them entering the telescopic component and causing waste and accelerated damage. Therefore, this solution incorporates scraper rings at the positions of the fixed plate and the first movable plate. During the retraction of the first and second movable plates, the scraper rings scrape away the materials adhering to their surfaces, preventing them from being carried out of the tank, reducing waste, and preventing them from entering the telescopic component and damaging it. This increases the service life of the telescopic component and, consequently, the service life of the reactor. Attached Figure Description
[0028] The invention will now be further described with reference to the accompanying drawings.
[0029] Figure 1 This is a schematic diagram of the overall structure of the reactor in this invention;
[0030] Figure 2 This is a schematic diagram of the first internal structure of the reactor in this invention;
[0031] Figure 3 This is a schematic diagram of the telescopic component when it is extended in this invention;
[0032] Figure 4 This is a schematic diagram of the structure of the telescopic component when it retracts in this invention;
[0033] Figure 5This is a schematic diagram of the second internal structure of the reactor in this invention;
[0034] Figure 6 This is a schematic diagram of the mounting structure of the rotating plate in this invention;
[0035] Figure 7 This is a schematic diagram of the internal structure of the heating component in this invention;
[0036] Figure 8 This is a schematic diagram of the installation structure of the heating component and the stirring rack in this invention;
[0037] Figure 9 This is a schematic diagram of the internal structure of the telescopic component in this invention;
[0038] Figure 10 This is a schematic diagram of the main shaft in this invention;
[0039] Figure 11 This is a schematic diagram of the structure of the stirring rack in this invention;
[0040] Figure 12 This is a schematic diagram of the spindle mounting structure in this invention;
[0041] Figure 13 This is a schematic diagram of the rotating sleeve in this invention;
[0042] In the diagram: 1. Tank body; 2. Main shaft; 3. Motor; 4. Driven wheel; 5. Driven wheel; 6. Stirring frame; 7. Fixed plate; 8. Movable plate 1; 9. Movable plate 2; 10. Electric push rod; 11. Rotary joint 1; 12. Rotary joint 2; 13. Rotary joint 3; 14. Rotary joint 4; 15. Channel 1; 16. Channel 2; 17. Rotating plate; 18. Torsion spring 1; 19. Limiting block; 20. Mounting cover; 21. Heating rod; 22. Scraper ring; 23. Side plate; 24. Torsion spring 2; 25. Slot; 26. Clip; 27. Top block; 28. Rotating sleeve. Detailed Implementation
[0043] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0044] like Figures 1 to 5As shown, a silicone structural sealant production reactor includes a tank body 1, a main shaft 2, a motor 3, a drive wheel 4, a driven wheel 5, a stirring frame 6, a telescopic component, and a heating component. The motor 3 is mounted on the upper part of the tank body 1 and is fixedly connected to the tank body 1 via a bracket. The main shaft 2 is located in the middle of the tank body 1 and is rotatably connected to the tank body 1. The driven wheel 5 is mounted on one end of the main shaft 2 and is fixedly connected to the main shaft 2. The drive wheel 4 is mounted on one end of the motor 3 and is fixedly connected to the output shaft of the motor 3. The drive wheel 4 and the driven wheel 5 are connected via a belt drive. The stirring frame 6 is unevenly spaced inside the tank body 1 and is connected to the main shaft 2 on one side. The telescopic component is evenly spaced on the tank body 1 and is used to extend the inner surface of the tank body 1. The space is divided; a heating element is provided on the tank body 1; the heating element is used to heat the stirring rack 6; the telescopic component includes a fixed plate 7, a first movable plate 8, a second movable plate 9, and an electric push rod 10; the tank body 1 has elongated holes spaced apart; a fixed plate 7 is provided on one side of the elongated holes; the fixed plate 7 is hollow; one end of the fixed plate 7 is fixedly connected to the tank body 1; the first movable plate 8 is provided on the inner side of the fixed plate 7; the first movable plate 8 is slidably connected to the fixed plate 7; the second movable plate 9 is provided on the inner side of the first movable plate 8; the second movable plate 9 is slidably connected to the first movable plate 8; the electric push rod 10 is evenly spaced on the inner side of the fixed plate 7; one end of the electric push rod 10 is fixedly connected to the inner wall of the fixed plate 7; one end of the movable rod of the electric push rod 10 is fixedly connected to one side of the second movable plate 9.
[0045] During the production of structural adhesives, the raw materials need to be stirred to achieve a more uniform mixture, thereby improving the production efficiency and quality of the structural adhesives. Traditional reactors typically rely solely on the movement of a stirring rod around the raw materials to achieve mixing. However, the effectiveness of this traditional stirring method depends on the rotation speed of the stirring rod and the contact area between the rod and the raw materials. Due to the viscosity of structural adhesives, high-speed stirring or the use of multiple stirring rods places high demands on the power and reliability of the reactor, leading to significant manufacturing difficulties. Therefore, in this… In this design, the rotation of motor 3 causes the drive wheel 4 to rotate, which in turn drives the driven wheel 5, causing the main shaft 2 to rotate. This, in turn, causes the stirring frame 6 to rotate inside the tank 1. A timer records the rotation time of the stirring frame 6 (since it rotates at a constant speed, the rotation angle can also be recorded). The timer transmits this information to the controller. Just after the stirring frame 6 has rotated past the telescopic component, the controller causes the telescopic component to extend into the tank 1, thus dividing the space inside the tank 1. As the stirring frame 6 continues to rotate, the space between the stirring frame 6 and the next telescopic component (denoted as space A) decreases. Due to the stirring... The frame 6 has only small gaps between two adjacent vertical supports (denoted as gap B). This allows the volume of space A to decrease by a greater amount than the volume of material flowing out from gap B after the frame 6 rotates. This increases the pressure inside space A, causing the medium inside space A to be forced out of gap B at higher pressure as the frame 6 rotates. This medium then enters the space between the stirring rod and the previous telescopic component (denoted as space C), impacting the material inside space C and causing it to flow. This results in faster and more uniform mixing, improving the efficiency and uniformity of the mixing. When the stirring rack 6 approaches the next telescopic component, the timer transmits the timing information to the controller. After receiving the information, the controller makes a judgment and controls the telescopic component to retract, so that the stirring rack 6 and the telescopic component do not interfere with each other, thus ensuring the normal stirring. After the telescopic component receives the signal to extend, the movable rod of the electric push rod 10 extends forward, thereby driving the first movable plate 8 and the second movable plate 9 to move forward. The first movable plate 8 and the second movable plate 9 then separate the internal space of the tank 1, thus meeting the stirring requirements. Since the movement can be achieved by only the electric push rod 10, the structure of the telescopic component is simple, which helps to reduce the manufacturing difficulty of the reactor.Meanwhile, due to the characteristic that structural adhesives increase in viscosity upon cooling during production, the resistance encountered during mixing increases. Therefore, this solution incorporates a heating element to heat the mixing rack 6, thereby heating the raw materials during structural adhesive production. This reduces the viscosity of both the structural adhesive and its raw materials, making mixing easier and increasing the flowability of the resulting structural adhesive and raw materials. This also enhances the turbulence of the flowing materials, ultimately improving the mixing effect.
[0046] like Figure 2 , Figure 5 , Figure 7 , Figure 8 and Figure 10 As shown, the heating component includes a first rotating joint 11, a second rotating joint 12, a third rotating joint 13, and a fourth rotating joint 14; a first channel 15 is formed on the main shaft 2; a first joint is provided at the upper end of the first channel 15; the first joint is rotatably connected to the main shaft 2; the first rotating joint 11 communicates internally with the first channel 15; the outer side of the first rotating joint 11 is connected to the outlet of an external heating device through a pipe; the second rotating joint 12 is provided at the other end of the first channel 15; the second rotating joint 12 is rotatably connected to the main shaft 2; the outer side of the second rotating joint 12 is connected to the outlet of an external heating device through a pipe. A hose is connected to one end of the stirring rack 6; the stirring rack 6 is hollow; the first channel 15 is connected to the interior of the stirring rack 6; a second channel 16 is provided on the main shaft 2; a third rotary joint 13 is provided at the upper end of the second channel 16; the third rotary joint 13 is rotatably connected to the main shaft 2; the outer side of the third rotary joint 13 is connected to the return end of the heating equipment through a pipe; a fourth rotary joint 14 is provided at the lower end of the second channel 16; the fourth rotary joint 14 is rotatably connected to the main shaft 2; the outer side of the fourth rotary joint 14 is connected to the other end of the stirring rack 6 through a hose.
[0047] During operation, the heating medium is introduced into the second rotary joint 12 through channel 15 via an external heating device. It then enters the mixing frame 6, flows within it, and finally enters the fourth rotary joint 14. From there, it enters the third rotary structure through channel 16 and then flows back to the return end of the heating device. This cycle heats the mixing frame 6, reducing the viscosity of the structural adhesive and its raw materials, making mixing easier, and increasing the fluidity of the resulting adhesive and raw materials. This improves the turbulence of the material flow and enhances the mixing effect. Since the main shaft 2 and the mixing frame 6 are rotating, direct pipe connection would result in pipe entanglement. Therefore, in this design, the main shaft... The main shaft 2 has two internal channels, namely channel 15 and channel 16. A rotating structure connects the two ends of channel 15 and channel 16 to the stirring rack 6 and the heating equipment, creating a flow path for the heating medium. During operation, the main shaft 2 rotates simultaneously with the stirring rack. Because rotating joints 11 and 13 are rotatably connected to the main shaft 2, the pipes connecting the heating equipment and the main shaft 2 will not become entangled, allowing the medium to flow smoothly. Simultaneously, rotating joints 12 and 14 allow the medium input from channel 15 and channel 16 to simultaneously flow into all the stirring racks 6, resulting in more uniform heating on the stirring racks without the need for multiple channels. This simplifies the structure of the heating components and makes the production of the reactor simpler.
[0048] like Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, rotating plates 17 are evenly spaced along the vertical direction on one side of the stirring rack 6; the rotating plates 17 are rotatably connected to the stirring rack 6; a first torsion spring 18 is provided at the connection between the rotating plate 17 and the stirring rack 6, one end of the first torsion spring 18 abuts against the rotating plate 17; the other end of the first torsion spring 18 abuts against the stirring rack 6; a limiting block 19 is provided on the stirring rack 6; the limiting block 19 is fixedly connected to the stirring rack 6; the limiting block 19 restricts the rotating plates 17 from moving within a horizontal and downward 45° range.
[0049] During operation, because the structural adhesive is not always produced at full capacity, the tank 1 is often not completely filled with raw materials. As the mixing rack 6 rotates, the space A shrinks, and the liquid level not only flows out through gap B, but the raw materials also move towards the upper cavity within space A, causing the liquid level to rise. While this still increases the pressure within space A, it is lower than when the tank is full, resulting in a slower flow rate of material from gap B. This reduces the movement of material within space C, thus weakening the mixing effect. Therefore, in this solution, a rotating plate 17 is installed on one side of the mixing rack 6, horizontally positioned in the Chengdu direction. When the mixing rack 6 rotates and compresses the raw materials, the rising liquid level first compresses the rotating plate 17, causing it to rotate. Because the rotating plate 17 is restricted by the limiting block 19, when the rotating plate 17 rotates to the horizontal position, it creates resistance to the rising liquid surface, preventing the liquid surface from rising further. This increases the pressure on the raw materials inside space A during rotation, allowing the raw materials to be ejected from gap B at a faster speed, thus creating a greater impact on the raw materials inside space C. This results in a larger amplitude of movement of the raw materials, leading to more uniform mixing and a better mixing effect. At the same time, by limiting the range of motion of the rotating plate 17 to the horizontal and horizontally tilted downwards at 45°, it is ensured that when the liquid surface moves upward, it will inevitably push the rotating plate 17 to rotate upward, preventing the rotating plate 17 from remaining vertical during the upward movement of the liquid surface. This ensures that the pressure inside space A reaches a high level during the rotation of the stirring rack 6.
[0050] like Figure 3 , Figure 4 and Figure 9 As shown, an installation cover 20 is provided on the outside of the tank body 1; one side of the installation cover 20 is fixedly connected to the tank body 1; the telescopic component is located inside the installation cover 20; heating rods 21 are evenly spaced on the installation cover 20; the heating rods 21 are fixedly connected to the installation cover 20.
[0051] During operation, the telescopic component involves entering and exiting the raw material. After exiting the raw material, the temperature of the telescopic component decreases. Repeated exits further lower the temperature of the first movable plate 8 and the second movable plate 9 within the telescopic component. Consequently, when the material re-enters the component, the temperature of the raw material near the first and second movable plates 8 and 9 decreases, increasing its viscosity. This makes it difficult for the first and second movable plates 8 and 9 to penetrate the raw material. Furthermore, the highly viscous raw material area formed near the first and second telescopic plates results in a mixed, blocky structure in the final material, leading to uneven mixing. Therefore, this solution adds a heating rod 2 to the outside of the telescopic component. 1. When the first movable plate 8 and the second movable plate 9 retract into the fixed plate 7, the heating rod 21 heats the first movable plate 8 and the second movable plate 9, thereby maintaining a high temperature. When the first and second heating plates re-enter the interior of the raw material, they heat the raw material, increasing its temperature and reducing the resistance encountered by the first movable plate 8 and the second movable plate 9, thus making the movement of the telescopic components smoother. At the same time, because the raw material is heated, it is possible to avoid the formation of highly viscous lumpy structures inside the raw material, thereby avoiding the formation of unmixed lumpy structures and improving the uniformity of mixing. Heating also improves the fluidity of the raw material, further improving the efficiency and uniformity of mixing.
[0052] like Figure 9 As shown, a scraping ring 22 is provided on the side of the fixed plate 7 near the first movable plate 8 and on the side of the first movable plate 8 near the second movable plate 9; the scraping ring 22 is fixedly connected to the fixed plate 7 and the first movable plate 8 respectively.
[0053] During operation, the first movable plate 8 and the second movable plate 9 directly contact the materials used in the production process. Since most raw materials are sticky, these materials adhere to the surfaces of the first and second movable plates 8 and 9. When the first and second movable plates 8 and 9 retract, they carry these raw materials out, potentially leading to them entering the telescopic component and causing waste and accelerated damage. Therefore, this solution incorporates scraper rings 22 at the positions of the fixed plate 7 and the first movable plate 8. During the retraction of the first and second movable plates 8 and 9, the scraper rings 22 scrape away the materials adhering to their surfaces, preventing them from being carried out of the tank 1, reducing waste, and preventing raw materials from entering the telescopic component and damaging it. This increases the service life of the telescopic component and, consequently, the service life of the reactor.
[0054] like Figure 3 , Figure 4 and Figure 8 As shown, a side plate 23 is provided on the side of the stirring rack 6 near the side wall of the tank 1; the side plate 23 is rotatably connected to the stirring rack 6; a second torsion spring 24 is evenly spaced along the vertical direction at the connection between the stirring rack 6 and the side plate 23; one end of the second torsion spring 24 abuts against the side plate 23, and the other end of the second torsion spring 24 abuts against the stirring rack 6; the other side of the side plate 23 is in contact with the inner wall of the tank 1.
[0055] During operation, the structural adhesive and its raw materials adhere to the inner wall of the tank 1 during the production process. Consequently, the structural adhesive near the tank 1 is difficult to mix, leading to uneven mixing. Therefore, in this solution, a side plate 23 is provided between the mixing rack 6 and the inner wall of the tank 1, with one side of the side plate 23 in contact with the inner wall of the tank 1. As the mixing rack 6 rotates, the side plate 23 scrapes against the inner wall of the tank 1, allowing the material adhering to the side wall of the tank 1 to separate from the side wall and mix with other materials inside the tank 1, resulting in more thorough mixing and improved mixing quality. Simultaneously, during material discharge, the side plate 23 scrapes off the material adhering to the side wall, ensuring that the material is completely removed from the inside of the tank 1, resulting in more thorough discharge.
[0056] The strength of the second torsion spring 24 gradually decreases from top to bottom.
[0057] When the side plate 23 is in the set state during operation, it can only push the material horizontally during the feeding process. The material then moves downwards solely by its own weight, resulting in slow material discharge. Therefore, in this solution, the strength of the second torsion spring 24 connecting the side plate 23 is gradually reduced from high to low. As the mixing rack 6 rotates, the resistance experienced by the side plate 23 in the vertical direction is relatively uniform, while the strength of the second torsion spring 24 is inconsistent. This causes a lag deformation in the lower end of the side plate 23 relative to the upper end in the vertical direction, resulting in a downward tilt of the side plate 23. With the rotation of the mixing rack 6, the side plate 23 exerts a downward force on the material adhered to the inner wall of the tank 1, accelerating the downward movement of the material and increasing the discharge rate, thus improving the ease of use of the equipment.
[0058] like Figures 10 to 13 As shown, the main shaft 2 has evenly spaced slots 25 along its circumference; a retaining strip 26 is provided on one side of the stirring frame 6; the retaining strip 26 is fixedly connected to the stirring frame 6; the retaining strip 26 cooperates with the slots 25; a top block 27 is provided at the lower part of the slots 25; one end of the top block 27 abuts against one end of the retaining strip 26; the top block 27 is fixedly connected to the main shaft 2 by bolts; a rotating sleeve 28 is provided on the outside of the main shaft 2; the rotating sleeve 28 is tightly fitted with the main shaft 2; the rotating sleeve 28 is rotatably connected to the tank body 1.
[0059] During operation, when installing the mixing rack 6, the locking strip 26 is inserted into the slot 25, and then a top block 27 is set at one end of the slot 25 to hold the locking strip 26 in place, thereby restricting the movement of the mixing rack 6 and completing the installation. By making the mixing rack 6 detachable, it is easy to replace the mixing rack 6 when it is damaged, thus facilitating the later maintenance of the equipment. At the same time, since the slot 25 is opened on the main shaft 2, if the main shaft 2 is directly rotated to connect to the tank 1, the strength of the connection between the main shaft 2 and the tank 1 will be reduced. Therefore, by setting a rotating sleeve 28 at the lower part of the main shaft 2, the slot 25 near the connection position of the main shaft 2 is filled by the rotating sleeve 28, thereby increasing the strength of the connection, reducing the damage to the connection, and thus extending the service life of the equipment.
[0060] During operation, the rotation of motor 3 causes the drive wheel 4 to rotate, which in turn drives the driven wheel 5 to rotate, causing the main shaft 2 to rotate. This, in turn, causes the stirring frame 6 to rotate inside the tank 1. Simultaneously, a timer records the rotation time of the stirring frame 6 (since the stirring frame 6 rotates at a constant speed, the rotation angle of the stirring frame 6 can also be recorded). The timer transmits the recorded information to the controller. Just after the stirring frame 6 has rotated past the telescopic component, the controller controls the telescopic component to extend into the tank 1, thus separating the space inside the tank 1. As the stirring frame 6 continues to rotate, the space between the stirring frame 6 and the next telescopic component (…) is further expanded. The volume of space A decreases because the mixing frame 6 only leaves small gaps between two adjacent vertical supports (let's call all gaps B). This means that when the mixing frame 6 rotates at an angle, the volume reduction of space A is greater than the volume of material flowing out from gaps B. This increases the pressure inside space A, causing the medium inside space A to be forced out of gaps B at higher pressure as the mixing frame 6 rotates. This medium then enters the space formed between the mixing rod and the previous telescopic component (let's call it space C). This impact causes the material inside space C to flow, resulting in faster and more uniform mixing. This improves the efficiency and uniformity of mixing. As the mixing frame 6 rotates and approaches the next telescopic component, a timer transmits timing information to the controller. Upon receiving the information, the controller makes a judgment and controls the telescopic component to retract, thus preventing interference between the mixing frame 6 and the telescopic component and ensuring normal mixing. After the telescopic component receives the signal to extend, the movable rod of the electric push rod 10 extends forward, thereby driving the first movable plate 8 and the second movable plate 9 to move forward. The first movable plate 8 and the second movable plate 9 then separate the internal space of the tank 1, thus meeting the mixing requirements. Since the movement relies solely on the electric push rod 10... This can be achieved with a 0, which simplifies the structure of the telescopic component and reduces the manufacturing difficulty of the reactor. At the same time, since the structural adhesive has the characteristic of increasing viscosity when cooled during the production process, the resistance encountered during stirring increases. Therefore, in this solution, a heating component is set to heat the stirring rack 6, which heats the raw materials during the production of structural adhesive. This reduces the viscosity of the structural adhesive and its raw materials, making stirring of the stirring rack 6 easier and increasing the fluidity of the generated structural adhesive and its raw materials. This improves the degree of turbulence during the flow of raw materials and enhances the stirring effect.During operation, an external heating device introduces a heating medium through channel 15 into the rotary joint 12, then into the mixing rack 6, where it flows before entering the rotary joint 14. From there, it enters the rotary structure 3 through channel 16 and returns to the return end of the heating device. This cycle heats the mixing rack 6, reducing the viscosity of the structural adhesive and its raw materials, making mixing easier, and increasing the fluidity of the resulting adhesive and raw materials. This improves the turbulence of the material flow and enhances the mixing effect. Since the main shaft 2 and the mixing rack 6 are rotating, direct pipe connection would result in pipe entanglement. Therefore, in this design, the main shaft 2... The reactor has two internal channels, No. 15 and No. 26. A rotating structure connects the two ends of these channels to the stirring rack 6 and the heating equipment, creating a flow path for the heating medium. During operation, the main shaft 2 rotates simultaneously with the stirring rack. Because the first and third rotating joints 11 and 13 are rotatably connected to the main shaft 2, the pipes connecting the heating equipment and the main shaft 2 will not become entangled, allowing for smooth flow of the medium. Furthermore, the second and fourth rotating joints 12 and 14 allow the medium input from channels 15 and 16 to simultaneously flow into all the stirring racks 6, resulting in more uniform heating without the need for multiple channels. This simplifies the structure of the heating components and simplifies the production process of the reactor.
[0061] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.
Claims
1. A silicone structural sealant production reactor, characterized by: The system includes a tank (1), a main shaft (2), a motor (3), a drive wheel (4), a driven wheel (5), a stirring rack (6), a telescopic component, a controller, a timer, and a heating component; the motor (3) is located on the upper part of the tank (1); the motor (3) is fixedly connected to the tank (1) via a bracket; the main shaft (2) is located in the middle of the tank (1); the main shaft (2) is rotatably connected to the tank (1); the driven wheel (5) is located at one end of the main shaft (2); the driven wheel (5) is fixedly connected to the main shaft (2); the motor (3)... One end is provided with the drive wheel (4); the drive wheel (4) is fixedly connected to the output shaft of the motor (3); the drive wheel (4) and the driven wheel (5) are connected by belt drive; the stirring rack (6) is unevenly spaced inside the tank (1); one side of the stirring rack (6) is connected to the main shaft (2); the telescopic component is evenly spaced on the tank (1); the telescopic component is used to divide the internal space of the tank (1); the heating component is provided on the tank (1); the heating component is used to heat the stirring rack (6); The telescopic component includes a fixed plate (7), a first movable plate (8), a second movable plate (9), and an electric push rod (10); the tank body (1) has elongated holes spaced apart; the fixed plate (7) is provided on one side of the elongated holes; the fixed plate (7) is hollow; one end of the fixed plate (7) is fixedly connected to the tank body (1); the first movable plate (8) is provided on the inner side of the fixed plate (7); the first movable plate (8) is slidably connected to the fixed plate (7); the inner side of the first movable plate (8) is provided with... The second movable plate (9) is slidably connected to the first movable plate (8); the electric push rods (10) are evenly spaced on the inner side of the fixed plate (7); one end of the electric push rod (10) is fixedly connected to the inner wall of the fixed plate (7); one end of the movable rod of the electric push rod (10) is fixedly connected to one side of the second movable plate (9); the rotation time of the stirring rack (6) is recorded by a timer, and the timer transmits the recorded information to the controller, which controls the extension and retraction of the telescopic components.
2. The silicone structural sealant production reactor according to claim 1, characterized in that: The heating component includes a first rotating joint (11), a second rotating joint (12), a third rotating joint (13), and a fourth rotating joint (14); a first channel (15) is opened on the main shaft (2); a first joint is provided at the upper end of the first channel (15); the first joint is rotatably connected to the main shaft (2); the first rotating joint (11) is connected to the interior of the first channel (15); the outer side of the first rotating joint (11) is connected to the outlet of an external heating equipment through a pipe; the second rotating joint (12) is provided at the other end of the first channel (15); the second rotating joint (12) is rotatably connected to the main shaft (2); the outer side of the second rotating joint (12) is connected to the outlet of an external heating equipment through a flexible hose. One end of the stirring rack (6) is connected; the stirring rack (6) is hollow; the first channel (15) is connected to the interior of the stirring rack (6); the main shaft (2) has a second channel (16); the third rotating joint (13) is provided at the upper end of the second channel (16); the third rotating joint (13) is rotatably connected to the main shaft (2); the outer side of the third rotating joint (13) is connected to the return end of the heating equipment through a pipe; the fourth rotating joint (14) is provided at the lower end of the second channel (16); the fourth rotating joint (14) is rotatably connected to the main shaft (2); the outer side of the fourth rotating joint (14) is connected to the other end of the stirring rack (6) through a hose.
3. The silicone structural sealant production reactor according to claim 2, characterized in that: Rotating plates (17) are evenly spaced along the vertical direction on one side of the stirring rack (6); the rotating plates (17) are rotatably connected to the stirring rack (6); a first torsion spring (18) is provided at the connection between the rotating plate (17) and the stirring rack (6); one end of the first torsion spring (18) abuts against the rotating plate (17); the other end of the first torsion spring (18) abuts against the stirring rack (6); a limiting block (19) is provided on the stirring rack (6); the limiting block (19) is fixedly connected to the stirring rack (6); the limiting block (19) restricts the rotating plate (17) from moving within a horizontal and downward 45° range.
4. The silicone structural sealant production reactor according to claim 3, characterized in that: The tank (1) is provided with an installation cover (20) on its exterior; one side of the installation cover (20) is fixedly connected to the tank (1); the telescopic component is located inside the installation cover (20); heating rods (21) are evenly spaced on the installation cover (20); the heating rods (21) are fixedly connected to the installation cover (20).
5. The silicone structural sealant production reactor according to claim 4, characterized in that: The fixed plate (7) is provided with a scraper ring (22) on the side of the first movable plate (8) and the first movable plate (8) is provided with a scraper ring (9); the scraper ring (22) is fixedly connected to the fixed plate (7) and the first movable plate (8) respectively.
6. The silicone structural sealant production reactor according to claim 5, characterized in that: A side plate (23) is provided on the side of the stirring rack (6) near the side wall of the tank (1); the side plate (23) is rotatably connected to the stirring rack (6); a second torsion spring (24) is evenly spaced along the vertical direction at the connection between the stirring rack (6) and the side plate (23); one end of the second torsion spring (24) abuts against the side plate (23); one end of the second torsion spring (24) abuts against the stirring rack (6); the other side of the side plate (23) contacts the inner wall of the tank (1).
7. The silicone structural sealant production reactor according to claim 6, characterized in that: The strength of the second torsion spring (24) gradually decreases from top to bottom.
8. The silicone structural sealant production reactor according to claim 7, characterized in that: The main shaft (2) is provided with slots (25) evenly spaced along the circumferential direction; a retaining strip (26) is provided on one side of the stirring frame (6); the retaining strip (26) is fixedly connected to the stirring frame (6); the retaining strip (26) cooperates with the slot (25); a top block (27) is provided at the lower part of the slot (25); one end of the top block (27) abuts against one end of the retaining strip (26); the top block (27) is fixedly connected to the main shaft (2) by bolts; a rotating sleeve (28) is provided on the outside of the main shaft (2); the rotating sleeve (28) is tightly fitted with the main shaft (2); the rotating sleeve (28) is rotatably connected to the tank (1).