A new type of PVC stabilizer synthesis reaction kettle

Abstract

The utility model discloses a novel PVC stabilizer synthesis is with reation kettle belongs to reation kettle technical field, including reation kettle body, the upper end center of reation kettle body is installed with the shaft coupling, the utility model discloses a damper, rotating shaft and cleaning scraper, damper can buffer the impact force when cleaning scraper and reation kettle body inner wall contact, protect cleaning scraper and reation kettle body inner wall from being damaged, cleaning scraper is close to reation kettle body inboard wall, can effectively scrape the material that adheres to the inner wall, prevent the scale and corrosion problem caused by material residue, thereby not only guarantee the cleanliness of reation kettle body inner wall, the utility model discloses a hollow tube design and solenoid valve shower nozzle are adopted to rotating shaft and support rod, cooperate vacuum pump and realize the efficient delivery of gas, make solenoid valve shower nozzle can accurate spray cleaning gas, can further clean up the material that cleaning scraper scraped to reation kettle body inner wall.

Description

Technical Field

[0001] This utility model belongs to the field of reaction vessel technology, specifically relating to a novel reaction vessel for synthesizing PVC stabilizers. Background Technology

[0002] PVC is a widely used thermoplastic, but due to the characteristics of its molecular structure, it is easily degraded during processing and use due to factors such as heat, light, and oxygen, resulting in a decline in performance. PVC stabilizers are a class of chemical additives that can inhibit or delay the degradation process of PVC and improve its thermal stability, light stability, and processing performance. They are an indispensable and important additive in PVC processing.

[0003] The new type of PVC stabilizer synthesis reactor is a chemical reaction vessel designed and developed specifically for the synthesis process characteristics of calcium-zinc composite stabilizers, rare earth stabilizers, and organotin stabilizers in PVC stabilizers. It features high reaction efficiency, precise process control, high safety, and environmental performance. It solves the shortcomings of traditional reactors in terms of corrosion resistance, heat transfer efficiency, mixing uniformity, and automated control, and is especially suitable for the clean production of new environmentally friendly stabilizers.

[0004] In the actual operation and processing of a new type of PVC stabilizer synthesis reactor, when adding materials, the entire bag of material is usually poured directly into the reactor. This easily causes the material to accumulate on the inner wall of the reactor, making it difficult to mix and synthesize the material with other particles in a short time, which greatly affects the production efficiency of material synthesis. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of reaction vessel for synthesizing PVC stabilizers.

[0006] One technical solution adopted by this utility model is: providing a novel reactor for synthesizing PVC stabilizers, including a reactor body, a coupling installed at the upper center of the reactor body, an exhaust port opened at the upper end of the reactor body near the coupling, a feed port opened at the upper end of the reactor body near the coupling, a discharge port opened at the lower center of the reactor body, an air inlet pipe connected to one side of the outer wall of the coupling, a rotating shaft installed at the lower center of the inner side of the reactor body near the coupling, a plurality of support rods evenly spaced around the outer wall of the rotating shaft along the height direction, a damper fixedly installed at the center of one end of each support rod, a cleaning scraper fixedly installed at the upper end of one end of the damper, closely attached to the inner wall of the reactor body, and a plurality of solenoid valve nozzles symmetrically installed on both sides of the cleaning scraper along the height direction.

[0007] Furthermore, control valves are provided at both the exhaust port and the air inlet port, and sealing end plates are provided at both the feed inlet and the discharge port.

[0008] Through the above technical solution, the setting of the control valve and the sealing end plate is an important guarantee for the safe and stable operation of the reactor body, enabling the control valve to flexibly cope with various complex situations during the reaction process, while the sealing end plate ensures the sealing of the reactor body.

[0009] Furthermore, the center of the inner side of the rotating shaft and the support rod is designed as a hollow tube, and a vacuum pump is connected to the air inlet port. The vacuum pump gas is delivered to the inner side of the rotating shaft and the support rod through a coupling.

[0010] Through the above technical solution, the hollow tube design of the rotating shaft and support rod, along with the use of the vacuum pump, enables the gas to be distributed more evenly to various parts of the reactor body, which is beneficial to improving the uniformity and efficiency of the reaction and providing a more ideal reaction environment for the synthesis of PVC stabilizers.

[0011] Furthermore, a ball bearing is fixedly installed at the center of the upper end of each support rod, and a rotating shaft is rotatably installed on the inner side of each ball bearing. Several mixing rods are evenly spaced around the outer wall of the rotating shaft along the height direction.

[0012] Through the above technical solution, the combination of ball bearing, rotating shaft and mixing rod constitutes the stirring system in the reactor, which enables the rotating shaft to rotate smoothly under the centrifugal force of the rotating shaft, driving the mixing rod to fully stir the material, improving the mixing effect of the material, helping to accelerate the reaction speed and improve the synthesis quality of PVC stabilizer.

[0013] Furthermore, a square mounting base is fixedly installed at one end of the damper, a cleaning scraper is fixedly installed at the upper end of the square mounting base, and irregularly shaped mounting plates are fixedly installed on both sides of the cleaning scraper. A solenoid valve nozzle is fixedly installed at the center of one end of the irregularly shaped mounting plate along the height direction, closely attached to the cleaning scraper.

[0014] Through the above technical solution, the installation method of the square mounting base, the irregularly shaped mounting plate, the cleaning scraper, and the solenoid valve nozzle makes the connection between the various components of the cleaning system tighter and more stable, thereby ensuring that the cleaning scraper can effectively scrape off the material on the inner wall of the reactor body, while the solenoid valve nozzle can accurately spray gas, further improving the cleaning effect and extending the service life of the reactor body.

[0015] Furthermore, gas delivery pipes are symmetrically installed in pairs at the center of one side of both the support rod and the square mounting base, and a servo motor is fixedly installed at the center of the upper end of the coupling, with the output end of the servo motor connected to a rotating shaft.

[0016] Through the above technical solution, the gas delivery pipe further optimizes the gas distribution effect, and the servo motor drives the rotating shaft through the coupling to provide a stable power source, ensuring the smooth operation of the stirring and cleaning actions.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) This utility model uses a damper, a rotating shaft and a cleaning scraper. The damper can buffer the impact force when the cleaning scraper contacts the inner wall of the reactor body, protecting the cleaning scraper and the inner wall of the reactor body from damage. The cleaning scraper is close to the inner wall of the reactor body, which can effectively scrape off the material attached to the inner wall, preventing the scaling and corrosion problems caused by material residue. This not only ensures the cleanliness of the inner wall of the reactor body, but also extends the service life of the reactor body and reduces the equipment maintenance cost.

[0019] (2) This utility model adopts a hollow tube design for the rotating shaft and support rod and a solenoid valve nozzle, and works with a vacuum pump to achieve efficient gas delivery, so that the solenoid valve nozzle can accurately spray cleaning gas, which can further clean and remove the material scraped off the inner wall of the reactor body by the cleaning scraper, thereby effectively improving the cleanliness of the inner wall of the reactor body and improving the cleaning effect of the cleaning scraper, further improving the cleaning efficiency of the cleaning scraper. Attached Figure Description

[0020] Figure 1 This is a first-view schematic diagram of the overall structure of the reactor body of a novel PVC stabilizer synthesis reactor according to this utility model;

[0021] Figure 2 This is a schematic diagram of the internal structure of the reactor body of a novel PVC stabilizer synthesis reactor according to this utility model.

[0022] Figure 3 This is a magnified first-view view of the cleaning mechanism structure of a novel PVC stabilizer synthesis reactor according to this utility model;

[0023] Figure 4 This utility model relates to a novel reaction vessel for synthesizing PVC stabilizers. Figure 3 A magnified schematic diagram of a portion of the structure of A.

[0024] Reference numerals in the attached drawings: 1. Reactor body; 2. Coupling; 3. Exhaust port; 4. Feed port; 5. Discharge port; 6. Rotating shaft; 7. Support rod; 8. Gas inlet pipe; 9. Ball bearing; 10. Rotating shaft; 11. Stirring rod; 12. Damper; 13. Square mounting base; 14. Cleaning scraper; 15. Irregularly shaped mounting plate; 16. Solenoid valve nozzle; 17. Gas delivery pipe; 18. Servo motor. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] like Figure 1-4 As shown in this embodiment, a novel PVC stabilizer synthesis reactor is presented. The reactor body 1 serves as the core load-bearing component of the entire device, providing a sealed space for the PVC stabilizer synthesis reaction. The coupling 2 connects the external power source to the internal rotating shaft 6 to achieve power transmission. The exhaust port 3 discharges excess gas or waste gas generated during the reaction, maintaining stable pressure inside the reactor. The feed port 4 facilitates the input of various raw materials required for PVC stabilizer synthesis into the reactor body 1, while the discharge port 5 is used to discharge the synthesized PVC. Stabilizer is discharged, and the rotating shaft 6 rotates under power drive, driving the support rod 7 to rotate, thereby causing the cleaning scraper 14 to move closely against the inner wall of the reactor body 1, promptly cleaning the material adhering to the side wall, avoiding material accumulation that affects the reaction effect and equipment performance. The damper 12 can adjust the contact degree between the cleaning scraper 14 and the inner wall of the reactor, ensuring the cleaning effect while preventing excessive wear. The gas inlet pipe 8 is connected to the support rod 7 and the rotating shaft 6 inside the reactor body 1 through the coupling 2, which can introduce gas into the square mounting seat 13 inside the reactor body 1. Then, the solenoid valve nozzle 16 can spray gas onto the cleaning scraper 14 as needed to further improve the cleaning effect.

[0027] The control valves at the exhaust port 3 and the inlet pipe 8 can precisely control the gas inlet and outlet. According to the reaction process and process requirements, the gas flow and pressure can be flexibly adjusted to ensure that the reaction is carried out in a suitable atmosphere and prevent gas leakage or external impurities from entering the reactor and affecting the reaction quality. The sealing end plates at the feed port 4 and the discharge port 5 can ensure the sealing of the reactor when it is not feeding or discharging, maintain the pressure stability and the purity of the reaction environment inside the reactor, avoid material leakage causing waste or pollution, and prevent external dust, moisture and other substances from entering the reactor and affecting the synthesis effect of PVC stabilizer and product quality.

[0028] The rotating shaft 6 and the support rod 7 are designed with a hollow tube at their inner center to form a gas transmission channel. This allows the gas drawn or transported by the inlet pipe 8 under the action of the vacuum pump to pass smoothly through the coupling 2 into the rotating shaft 6 and the support rod 7. Through this design, the gas can be further transported to the solenoid valve nozzle 16 to achieve functions such as gas-assisted cleaning, material transportation, or gas dispersion during the reaction process. For example, during cleaning, the gas pressure can be used to enhance the spraying effect of the solenoid valve nozzle 16 and improve the cleaning efficiency. During the reaction process, the gas can be evenly dispersed into the reaction system to promote the full reaction and improve the synthesis efficiency and quality of PVC stabilizer.

[0029] The ball bearing 9 is installed at the upper center of the support rod 7, providing flexible and stable rotation support for the rotating shaft 10, reducing frictional resistance during rotation, and ensuring that the rotating shaft 10 can achieve high-speed and stable rotation with low energy consumption. During rotation, the stirring rod 11 on the outer wall of the rotating shaft 10 stirs and mixes the materials in the reactor. Through reasonable structural design and layout, the materials can form good convection and diffusion in the reactor, promote full contact and reaction between materials, improve the uniformity and reaction rate of PVC stabilizer synthesis reaction, and ensure the stability and consistency of product quality. At the same time, the rotation of the stirring rod 11 and the movement of the cleaning scraper 14 work together to effectively prevent the materials from accumulating or settling locally in the reactor.

[0030] The square mounting base 13 provides a stable mounting foundation for the cleaning scraper 14, ensuring that the cleaning scraper 14 can stably fit against the inner wall of the reactor body 1 under the action of the damper 12, thereby improving the reliability and stability of the cleaning scraper 14 during operation. The irregularly shaped mounting plate 15 is designed according to the structure and working requirements of the cleaning scraper 14, and can accurately install the solenoid valve nozzle 16 in the appropriate position, ensuring that the gas sprayed by the solenoid valve nozzle 16 can effectively cover the working area of ​​the cleaning scraper 14, thereby enhancing the cleaning effect. At the same time, the irregularly shaped mounting plate 15 fits tightly with the cleaning scraper 14, which can reinforce the cleaning scraper 14 to a certain extent, improve its durability in complex working environments, and extend the service life of the equipment.

[0031] The gas delivery pipes 17, symmetrically installed at the center of one side of the support rod 7 and the square mounting base 13, further improve the gas transmission network, enabling more uniform gas delivery to various areas within the reactor. This meets the gas distribution requirements of different reaction stages and cleaning processes. For example, during the reaction, the gas delivery pipes 17 can be used to supplement the reaction system with reaction gas or adjust the gas concentration. During cleaning, the gas delivery pipes 17 can be used to assist the cleaning scraper 14 and the solenoid valve nozzle 16 for efficient cleaning. The servo motor 18, installed at the center of the upper end of the coupling 2, serves as the power source for the entire reactor stirring and cleaning system. It features high precision, high response speed, and stability and reliability. It can precisely control the rotation speed and direction of the rotating shaft 6 according to the reaction process requirements, achieving precise control of the reaction process. This ensures that the PVC stabilizer synthesis reaction proceeds under optimal conditions, improving product quality and production efficiency. It also ensures that the cleaning scraper 14 and the stirring rod 11 can work stably and perform at their best.

[0032] The working principle of this embodiment is as follows:

[0033] First, the servo motor 18 is installed on the upper end of the coupling 2. After starting as a power source, it transmits power to the rotating shaft 6 inside the reactor body 1 through the coupling 2, causing the rotating shaft 6 to rotate along the central axis. The support rod 7 on the outer side wall of the rotating shaft 6 rotates synchronously with it, forming a circular motion trajectory centered on the rotating shaft 6. The rotating shaft 10 is installed in the ball bearing 9 at the center of the upper end of the support rod 7. Under the action of the centrifugal force generated by the rotation of the rotating shaft 6, the rotating shaft 10 achieves autonomous rotation through the ball bearing 9. The stirring rod 11 on its outer side stirs the material inside the reactor body 1, promoting the mixing reaction of the material.

[0034] Secondly, the end of the support rod 7 is connected to the square mounting base 13 through the damper 12. The square mounting base 13 fixes the cleaning scraper 14 so that it is in close contact with the inner wall of the reactor body 1. When the support rod 7 rotates, the cleaning scraper 14 moves in a circular motion with the support rod 7 to scrape off the material attached to the inner wall. The damper 12 buffers the impact force of the cleaning scraper 14 contacting the inner wall to avoid wear. At the same time, the air inlet pipe 8 is connected to the hollow tube structure of the rotating shaft 6 and the support rod 7 through the coupling 2. The vacuum pump delivers gas through the air inlet pipe 8 to the rotating shaft 6 and the inside of the support rod 7. Then, the gas is diverted through the gas delivery pipe 17 on one side of the support rod 7 and the square mounting base 13 to the solenoid valve nozzle 16 on the irregular mounting plate 15. The solenoid valve nozzle 16 accurately sprays out cleaning gas to further blow and clean the material scraped off by the cleaning scraper 14 to ensure that there is no residue on the inner wall.

[0035] Finally, the material enters the reactor body 1 through the feed port 4. The sealing end plate ensures the sealing of the reactor body 1 after the material is fed in. Waste gas or excess gas generated during the reaction is discharged through the exhaust port 3. The control valves at the exhaust port 3 and the inlet pipe 8 port can adjust the gas flow and pressure to maintain a stable reaction environment. After the reaction is completed, the synthesized PVC stabilizer is discharged from the discharge port 5. The sealing end plate of the discharge port 5 keeps the equipment sealed when not discharging to prevent material leakage or the entry of external impurities. Throughout the process, the rotating shaft 6, support rod 7, cleaning scraper 14, mixing rod 11 and other components work together to achieve integrated operation of material stirring, inner wall cleaning and reaction control.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A novel reactor for synthesizing PVC stabilizers, comprising a reactor body (1), characterized in that: A coupling (2) is installed at the center of the upper end of the reactor body (1). An exhaust port (3) is provided at the end of the upper end of the reactor body (1) near the coupling (2). An inlet port (4) is provided at the side of the upper end of the reactor body (1) near the coupling (2). An outlet port (5) is provided at the center of the lower end of the reactor body (1). An air inlet pipe (8) is connected to one side of the outer wall of the coupling (2). The inner side of the reactor body (1) near the coupling (2) A rotating shaft (6) is installed at the lower center of the reactor body (1). Several support rods (7) are installed around the outer wall of the rotating shaft (6) at equal intervals along the height direction. A damper (12) is fixedly installed at the center of one end of each support rod (7). A cleaning scraper (14) that is close to the inner wall of the reactor body (1) is fixedly installed at the upper end of one end of the damper (12). Several solenoid valve nozzles (16) are installed symmetrically on both sides of the cleaning scraper (14) along the height direction.

2. The novel PVC stabilizer synthesis reactor according to claim 1, characterized in that: Control valves are provided at both the exhaust port (3) and the air inlet pipe (8) port, and sealing end plates are provided at both the feed inlet (4) and the discharge port (5) port.

3. The novel PVC stabilizer synthesis reactor according to claim 1, characterized in that: The rotating shaft (6) and the support rod (7) are designed with a hollow tube at their inner center. A vacuum pump is connected to the port of the air inlet pipe (8). The vacuum pump gas is delivered to the inner side of the rotating shaft (6) and the support rod (7) through the coupling (2).

4. The novel PVC stabilizer synthesis reactor according to claim 3, characterized in that: Each of the support rods (7) is fixedly installed with a ball bearing (9) at the center of its upper end. Each of the ball bearings (9) is rotatably installed with a rotating shaft (10) on its inner side. Several mixing rods (11) are evenly spaced around the outer wall of the rotating shaft (10) along the height direction.

5. The novel PVC stabilizer synthesis reactor according to claim 1, characterized in that: A square mounting base (13) is fixedly installed at one end of the damper (12). A cleaning scraper (14) is fixedly installed at the upper end of the square mounting base (13). A shaped mounting plate (15) is fixedly installed on both sides of the cleaning scraper (14). A solenoid valve nozzle (16) that is close to the cleaning scraper (14) is fixedly installed at the center of one end of the shaped mounting plate (15) along the height direction.

6. The novel PVC stabilizer synthesis reactor according to claim 1, characterized in that: Gas delivery pipes (17) are symmetrically installed on both sides of the support rod (7) and the square mounting base (13). A servo motor (18) is fixedly installed at the upper center of the coupling (2). The output end of the servo motor (18) is connected to a rotating shaft (6).

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