An apparatus for preparing low molecular weight liquid rubber
The device, consisting of a support platform, a circular conveying shell, and a mixing tank, combined with conveying and mixing components, solves the problems of localized overheating and uneven mixing, achieving high-purity and high-yield production of low-molecular-weight liquid rubber and ensuring consistent product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG ANYSIL SILICONE CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-05-26
AI Technical Summary
In existing low-molecular-weight liquid rubber preparation devices, excessive local temperature rise can hinder the formation of sensitive chemical bonds, affecting the purity of the target product. Furthermore, stirred tank reactors are difficult to mix evenly, while continuous fluidized bed reactors are difficult to control the feed precisely.
The device consists of a support platform, a circular conveying shell, and a mixing tank. Combining the conveying and mixing components, it achieves quantitative conveying, uniform heating, and mixing through a metering pump, a spiral heating tube, a temperature sensor, and an automatic control system, avoiding localized overheating. It also achieves rapid mixing through a stirring paddle and a cutting blade.
It achieves high purity and high yield of the target product, and ensures the consistency of product quality for each batch through intelligent control mechanism, shortening the production cycle and improving economic efficiency.
Smart Images
Figure CN224271204U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of preparation apparatus technology, and in particular to an apparatus for preparing low molecular weight liquid rubber. Background Technology
[0002] In modern chemical manufacturing processes, low molecular weight liquid rubber has become an indispensable basic material for many high-performance products due to its excellent elasticity and chemical resistance. In recent years, with the rapid development of downstream industries such as automobile manufacturing and construction, the demand for this key material has been increasing, which has driven the continuous improvement of low molecular weight liquid rubber production processes. At the same time, the increasing awareness of environmental protection has prompted people to explore greener and more efficient synthesis routes.
[0003] For the industrial-scale production of low-molecular-weight liquid rubber, the traditional methods commonly used in the industry include two main categories: stirred tank reactor process and continuous fluidized bed reactor technology. The stirred tank method relies on mechanical stirring to promote full mixing between raw materials and to induce polymerization under catalysis. This process is relatively intuitive and easy to control, and it is convenient to transition from small-scale experiments to mass production. In contrast, the continuous fluidized bed technology uses high-speed airflow to maintain the suspension of particles in the system to enhance mass transfer and heat exchange. It is suitable for companies that pursue high production capacity to implement long-term uninterrupted operation.
[0004] Although the two classic preparation strategies mentioned above are suitable for different scenarios, they still face their own limitations. For example, when using a stirred tank with a fixed volume and a closed environment, it is difficult to avoid the problem of excessive local temperature rise due to the limitation of the heat conduction mechanism. This is extremely detrimental to the formation of sensitive chemical bonds and thus drags down the purity of the target product. As for the continuous fluidized bed design supported by gas circulation, although it helps to accelerate the reaction process, it is difficult to completely eliminate the increase of side reactions and insufficient single-pass processing efficiency caused by poor mixing due to the difficulty in controlling the feed precision. The existence of these problems has led the industry to continuously seek innovative solutions to improve the overall processing performance. Therefore, a preparation device for low molecular weight liquid rubber has been proposed. Utility Model Content
[0005] To address the shortcomings of existing technologies, this application provides a device for preparing low-molecular-weight liquid rubber, which has advantages such as avoiding excessive local temperature rise. This solves the problem that excessive local temperature rise leads to extremely unfavorable formation of sensitive chemical bonds, which in turn affects the purity level of the target product.
[0006] In summary, this application provides the following technical solution: a preparation device for low molecular weight liquid rubber, including a support platform, a circular conveying shell fixed on the upper surface of the support platform, a support frame fixed on the upper surface of the support platform, a stirring tank fixed on the upper surface of the support frame, a conveying component on the left side of the circular conveying shell, and a stirring component on the upper surface of the stirring tank.
[0007] The conveying assembly includes a first motor, a conveying wheel, a spiral heating tube, a temperature sensor, a metering pump, an inlet pipe, and an outlet pipe. The first motor is fixed to the right side of the circular conveying housing. The conveying wheel is rotatably connected to the inside of the circular conveying housing via a sealed bearing. The left side of the conveying wheel rotatably penetrates the circular conveying housing and is fixedly connected to the outside of the output shaft of the first motor. The spiral heating tube is embedded and fixed to the inner circumferential wall of the inner cavity of the circular conveying housing. The inlet pipe and the outlet pipe are both fixed to the left side of the upper surface and the right side of the lower surface of the circular conveying housing. The bottom end of the inlet pipe penetrates the circular conveying housing and communicates with one end of the spiral heating tube. The top end of the outlet pipe penetrates the circular conveying housing and communicates with the end of the spiral heating tube away from the inlet pipe. The temperature sensor is embedded and fixed to the back wall of the inner cavity of the circular conveying housing.
[0008] This application avoids the problem of excessive temperature rise in local areas by adopting the above-mentioned technical solution.
[0009] Furthermore, the metering pump is fixed on the left side of the upper surface of the circular conveying housing, the output end of the metering pump is connected to the upper surface of the circular conveying housing through a pipe, and the input end of the metering pump is fixed with an input pipe.
[0010] The beneficial effect of adopting the above-mentioned further scheme is that the basic monomer solution can be quantitatively delivered by a metering delivery pump.
[0011] Furthermore, the stirring assembly includes a second motor, a rotating rod, several stirring paddles, several cutting blades, and a discharge structure. The second motor is fixed to the upper surface of the stirring tank, and the rotating rod is rotatably connected to the top wall of the inner cavity of the stirring tank through a sealed bearing. The top end of the rotating rod rotatably penetrates the stirring tank and is fixedly connected to the outside of the output shaft of the second motor.
[0012] The beneficial effect of adopting the above-mentioned further solution is that the stirring component can achieve uniform and stable material mixing in a shorter time, effectively suppressing the generation of by-products.
[0013] Furthermore, several of the stirring paddles are fixed to the outside of the rotating rod, several of the cutting blades are fixed to the outside of the rotating rod, the top end of the discharge structure is connected to the lower surface of the mixing tank, and the bottom end of the discharge structure is connected to the upper surface of the circular conveying shell.
[0014] The beneficial effect of adopting the above-mentioned further solution is that rubber products can be cut into fine particles by using several cutting blades.
[0015] Furthermore, the discharge structure includes a first connecting pipe, an electromagnetic valve is connected to the outer side of the bottom end of the first connecting pipe, and a second connecting pipe is connected to the inside of the electromagnetic valve.
[0016] The beneficial effect of adopting the above-mentioned further solution is that it can adjust the size of the opening inside the solenoid valve and the feed rate.
[0017] Furthermore, several of the aforementioned stirring paddles are evenly distributed on the outer side of the rotating rod.
[0018] The beneficial effect of adopting the above-mentioned further scheme is that the material can be uniformly stirred by using several stirring paddles.
[0019] Furthermore, a feed pipe is connected to the left side of the upper surface of the mixing tank.
[0020] The beneficial effect of adopting the above-mentioned further solution is that a certain amount of rubber product material can be heated inside the mixing tank through the feed pipe.
[0021] Furthermore, a conveying pipe is connected to the right side of the circular conveying housing.
[0022] The beneficial effect of adopting the above-mentioned further solution is that material discharge can be carried out through the conveying pipe.
[0023] Compared with the prior art, this application provides an apparatus for preparing low molecular weight liquid rubber, which has the following advantages:
[0024] 1. The preparation device for low molecular weight liquid rubber effectively solves the problem of excessive local temperature rise, which leads to extremely unfavorable formation of sensitive chemical bonds and thus affects the purity level of the target product. Based on the intelligent control mechanism of the automatic control system, the reaction conditions can be dynamically monitored and adjusted in real time throughout the reaction process, including precise control of key temperature parameters, to ensure the consistency of product quality for each batch.
[0025] 2. The apparatus for preparing low molecular weight liquid rubber can achieve uniform and stable material mixing in a short time through the stirring component, effectively suppressing the generation of by-products, thereby improving the yield and purity of the target product, namely low molecular weight liquid rubber. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of this application;
[0027] Figure 2 This is a top view of the mixing tank and support frame of this application;
[0028] Figure 3 This is a schematic diagram of the delivery component of this application;
[0029] Figure 4 This is a schematic diagram of the stirring assembly of this application.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1. Support platform; 2. Circular conveying shell; 3. Support frame; 4. Mixing tank; 5. Conveying assembly; 51. First motor; 52. Conveying wheel; 53. Spiral heating tube; 54. Temperature sensor; 55. Metering pump; 56. Inlet pipe; 57. Outlet pipe; 6. Mixing assembly; 61. Second motor; 62. Rotating rod; 63. Stirring paddle; 64. Cutting blade; 65. Discharge structure; 7. Feed pipe; 8. Conveying pipe. Detailed Implementation
[0032] Please see Figures 1 to 2 It includes a support platform 1, a circular conveying shell 2 fixed on the upper surface of the support platform 1, a support frame 3 fixed on the upper surface of the support platform 1, a mixing tank 4 fixed on the upper surface of the support frame 3, a conveying component 5 on the left side of the circular conveying shell 2, and a mixing component 6 on the upper surface of the mixing tank 4.
[0033] The left side of the upper surface of the mixing tank 4 is connected to the feed pipe 7, and the right side of the circular conveying shell 2 is connected to the conveying pipe 8.
[0034] Please see Figure 3 In this embodiment, the conveying assembly 5 includes a first motor 51, a conveying wheel 52, a spiral heating tube 53, a temperature sensor 54, a metering pump 55, an inlet pipe 56, and an outlet pipe 57. The first motor 51 is fixed on the right side of the circular conveying housing 2. The conveying wheel 52 is rotatably connected to the inside of the circular conveying housing 2 through a sealed bearing. The left side of the conveying wheel 52 rotates through the circular conveying housing 2 and is fixedly connected to the outside of the output shaft of the first motor 51.
[0035] The spiral heating tube 53 is embedded and fixed in the inner circumferential wall of the inner cavity of the circular conveying housing 2. The inlet pipe 56 and the outlet pipe 57 are both fixed on the left side of the upper surface and the right side of the lower surface of the circular conveying housing 2. The bottom end of the inlet pipe 56 passes through the circular conveying housing 2 and is connected to one end of the spiral heating tube 53. The top end of the outlet pipe 57 passes through the circular conveying housing 2 and is connected to the end of the spiral heating tube 53 away from the inlet pipe 56. The temperature sensor 54 is embedded and fixed in the back wall of the inner cavity of the circular conveying housing 2.
[0036] The metering pump 55 is fixed on the left side of the upper surface of the circular conveying housing 2. The output end of the metering pump 55 is connected to the upper surface of the circular conveying housing 2 through a pipe, and the input end of the metering pump 55 is fixed with an input pipe.
[0037] It should be noted that the top of the inlet pipe 56 is connected to the outlet pipe of the external heating system, and the outlet pipe 57 is connected to the return pipe of the external heating system for circulating heating. The temperature sensor 54 can detect the temperature inside the circular conveying housing 2 to achieve constant temperature heating. The spiral heating tube 53 can be set to ensure uniform heating. By starting the first motor 51, the conveying wheel 52 can be driven to rotate inside the circular conveying housing 2 to convey and uniformly stir the material. The material is discharged through the conveying pipe 8 and cooled.
[0038] It should be noted that the conveying component 5 effectively solves the problem of excessive local temperature rise, which leads to extremely unfavorable formation of sensitive chemical bonds and thus affects the purity level of the target product. Based on the intelligent control mechanism of the automatic control system, the reaction conditions can be dynamically monitored and adjusted in real time throughout the reaction process, including precise control of key temperature parameters, to ensure the consistency of product quality for each batch.
[0039] Please see Figure 4 In this embodiment, the stirring assembly 6 includes a second motor 61, a rotating rod 62, several stirring paddles 63, several cutting blades 64, and a discharge structure 65. The second motor 61 is fixed on the upper surface of the stirring tank 4. The rotating rod 62 is rotatably connected to the top wall of the inner cavity of the stirring tank 4 through a sealed bearing. The top end of the rotating rod 62 rotates through the stirring tank 4 and is fixedly connected to the outside of the output shaft of the second motor 61.
[0040] Several agitators 63 are fixed to the outside of the rotating rod 62, several cutting blades 64 are fixed to the outside of the rotating rod 62, the top of the discharge structure 65 is connected to the lower surface of the mixing tank 4, the bottom of the discharge structure 65 is connected to the upper surface of the circular conveying shell 2, the discharge structure 65 includes a first connecting pipe, an electromagnetic valve is connected to the outside of the bottom of the first connecting pipe, a second connecting pipe is connected to the inside of the electromagnetic valve, and several agitators 63 are evenly distributed on the outside of the rotating rod 62.
[0041] The next step can only be carried out after turning on the main power switch and confirming that the sensor is correct. The metering pump 55, heating system and second motor 61 are started in sequence. According to the preset program, an appropriate amount of basic monomer is automatically introduced into the reaction zone. The real-time values of various indicators are continuously observed on the equipment display screen. If any abnormality is found, manual intervention measures are immediately taken.
[0042] The aim is to completely eliminate the many drawbacks of the past process. Through scientific and reasonable layout planning, the optimal thermodynamic matching degree is achieved, which significantly shortens the production cycle and significantly improves the ratio of output to economic benefits. More importantly, with the help of a highly integrated automated control platform, human interference is successfully overcome, and a new and efficient preparation solution with a high degree of intelligence and simple and reliable operation is truly achieved.
[0043] It should be noted that after connecting the outlet pipe of the basic monomer solution on the left side of the input pipe, the metering pump 55 is turned on to transport the pre-treated basic monomer solution into the inner circular conveying shell 2 to start the initial heating stage. At this time, the hot water in the spiral heating tube 53 rapidly raises the reaction system to the set temperature range. Then, a certain amount of material is poured into the inside of the mixing tank 4 through the feed pipe 7, and the second motor 61 is started to drive several stirring paddles 63 and several cutting blades 64 to rotate, forming a strong vortex that promotes rapid diffusion and contact between different components and generates primary colloidal particles. Then, the electromagnetic valve in the discharge structure 65 is opened, and the primary colloidal particles enter the inside of the circular conveying shell 2, and the constant temperature condition is maintained until the target molecular weight level is reached.
[0044] The working principle of the above embodiments is as follows:
[0045] First, connect the outlet pipe of the basic monomer solution on the left side of the input pipe. Then, turn on the metering pump 55 to transport the pre-treated basic monomer solution into the inner circular conveying shell 2 to begin the initial heating stage. At this time, the hot water in the spiral heating tube 53 rapidly raises the reaction system to the set temperature range. Then, pour a certain amount of material into the mixing tank 4 through the feed pipe 7 and start the second motor 61 to drive several stirring paddles 63 and several cutting blades 64 to rotate, forming a strong vortex that promotes rapid diffusion and contact between different components and generates primary colloidal particles. Then, open the solenoid valve in the discharge structure 65 to release the primary colloidal particles. The microparticles enter the interior of the circular conveying housing 2 and continue to maintain constant temperature conditions until the target molecular weight level is reached. The top of the inlet pipe 56 is connected to the outlet pipe of the external heating system, and the outlet pipe 57 is connected to the return pipe of the external heating system for circulating heating. The temperature sensor 54 can detect the temperature inside the circular conveying housing 2 to achieve constant temperature heating. The spiral heating tube 53 can achieve uniform heating. By starting the first motor 51, the conveying wheel 52 can be driven to rotate inside the circular conveying housing 2 to convey and uniformly stir the material. The material is discharged through the conveying pipe 8 and cooled.
Claims
1. A device for the preparation of low molecular liquid rubber, comprising a support table (1), characterized in that: A circular conveying shell (2) is fixed on the upper surface of the support platform (1), a support frame (3) is fixed on the upper surface of the support platform (1), a stirring tank (4) is fixed on the upper surface of the support frame (3), a conveying component (5) is provided on the left side of the circular conveying shell (2), and a stirring component (6) is provided on the upper surface of the stirring tank (4). The conveying assembly (5) includes a first motor (51), a conveying wheel (52), a spiral heating tube (53), a temperature sensor (54), a metering pump (55), an inlet pipe (56), and an outlet pipe (57). The first motor (51) is fixed to the right side of the circular conveying housing (2). The conveying wheel (52) is rotatably connected to the inside of the circular conveying housing (2) through a sealed bearing. The left side of the conveying wheel (52) rotatably passes through the circular conveying housing (2) and is fixedly connected to the outside of the output shaft of the first motor (51). The spiral heating tube (53) 53) The inlet pipe (56) and outlet pipe (57) are both fixed on the left side of the upper surface and the right side of the lower surface of the circular conveying housing (2). The bottom end of the inlet pipe (56) penetrates the circular conveying housing (2) and is connected to one end of the spiral heating pipe (53). The top end of the outlet pipe (57) penetrates the circular conveying housing (2) and is connected to the end of the spiral heating pipe (53) away from the inlet pipe (56). The temperature sensor (54) is embedded and fixed on the back wall of the inner cavity of the circular conveying housing (2).
2. The apparatus for preparing a low-molecular liquid rubber according to claim 1, wherein: The metering pump (55) is fixed on the left side of the upper surface of the circular conveying housing (2). The output end of the metering pump (55) is connected to the upper surface of the circular conveying housing (2) through a pipe. The input end of the metering pump (55) is fixed with an input pipe.
3. The apparatus for preparing a low-molecular liquid rubber according to claim 1, wherein: The stirring assembly (6) includes a second motor (61), a rotating rod (62), several stirring paddles (63), several cutting blades (64), and a discharge structure (65). The second motor (61) is fixed on the upper surface of the stirring tank (4). The rotating rod (62) is rotatably connected to the top wall of the inner cavity of the stirring tank (4) through a sealed bearing. The top end of the rotating rod (62) rotates through the stirring tank (4) and is fixedly connected to the outside of the output shaft of the second motor (61).
4. The apparatus for preparing low molecular weight liquid rubber according to claim 3, characterized in that: Several of the stirring paddles (63) are fixed on the outside of the rotating rod (62), several of the cutting blades (64) are fixed on the outside of the rotating rod (62), the top of the discharge structure (65) is connected to the lower surface of the mixing tank (4), and the bottom of the discharge structure (65) is connected to the upper surface of the circular conveying shell (2).
5. The apparatus for preparing low molecular weight liquid rubber according to claim 3, characterized in that: The discharge structure (65) includes a first connecting pipe, an electromagnetic valve is connected to the outer side of the bottom end of the first connecting pipe, and a second connecting pipe is connected to the inside of the electromagnetic valve.
6. The apparatus for preparing low molecular weight liquid rubber according to claim 3, characterized in that: Several of the stirring paddles (63) are evenly distributed on the outside of the rotating rod (62).
7. The apparatus for preparing low molecular weight liquid rubber according to claim 1, characterized in that: The left side of the upper surface of the mixing tank (4) is connected to the feed pipe (7).
8. The apparatus for preparing low molecular weight liquid rubber according to claim 1, characterized in that: The circular conveying housing (2) is connected to a conveying pipe (8) on its right side.