Special production kettle for polyurethane

Abstract

The utility model relates to the technical field of polyurethane production equipment, in particular to a special production kettle for polyurethane. According to the technical scheme, the reaction kettle comprises a kettle body and a discharge hole formed in the bottom of the kettle body, and further comprises a rotary scraping strip which is movably arranged in the kettle body and clings to the inner wall of the kettle body. According to the utility model, the rotary scraping strip, the discharging outer pipe, the transmission mechanism, the driving mechanism and other structures are matched, and the rotary scraping strip scrapes along the inner wall of the kettle body, so that materials which are originally dispersed and adhered to all parts of the kettle wall are effectively gathered together, and the cleaning work becomes more convenient. Meanwhile, most of the gathered materials can be discharged out of the reaction kettle through the discharging outer pipe under the action of gravity, so that the efficient recovery of the materials is realized, the waste caused by material residues is greatly reduced, the materials adhered to the kettle wall are effectively removed, and the cross contamination with the next batch of materials can be avoided; therefore, it is ensured that each batch of polyurethane products have stable quality and performance.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane production equipment technology, and in particular to a special polyurethane production kettle. Background Technology

[0002] Polyurethane is a polymer compound with diverse structures and properties, used to manufacture a variety of products. It is synthesized from isocyanates and polyols through a chemical reaction. Depending on the polymerization conditions and raw material ratios, polyurethane can be made into different forms, such as foams, elastomers, coatings, and adhesives. Currently, in the production process of liquid polyurethane, the production vessel (usually called a reaction vessel) is a crucial piece of equipment. Its main function is to provide an environment that controls the reaction temperature, pressure, mixing, and reaction time, allowing the synthesis reaction of liquid polyurethane to proceed efficiently and uniformly. In existing technologies, a significant amount of residual material adheres to the inner wall of the reaction vessel after polyurethane processing, which cannot be completely removed. This not only leads to waste but also easily affects the quality of subsequent batches of polyurethane products. Furthermore, the excessive dispersion of the material adhering to the inner wall of the vessel makes cleaning inconvenient. Utility Model Content

[0003] The purpose of this invention is to address the problem in existing technologies where, after polyurethane processing, a significant amount of residual material adheres to the inner wall of the reactor and cannot be completely removed. This not only leads to waste but also easily affects the quality of subsequent batches of polyurethane products. Furthermore, it addresses the difficulty of cleaning the reactor interior by proposing a dedicated polyurethane production reactor.

[0004] The technical solution of this utility model is as follows: A polyurethane-specific production reactor includes a reactor body and a discharge port opened at the bottom of the reactor body. It also includes: a rotating scraper movably disposed in the reactor body and tightly attached to the inner wall of the reactor body; a discharge outer pipe disposed at the bottom of the reactor body and fixedly connected to the discharge port, wherein the discharge outer pipe is provided with a transmission mechanism that drives the rotating scraper to rotate around the discharge port; and a drive mechanism installed at the bottom of the reactor body to switch the transmission mechanism on and off.

[0005] Optionally, the transmission mechanism includes a sealing groove formed inside the discharge outer tube, a discharge port is slidably installed inside the discharge outer tube, a sealing ring is fixedly sleeved on the outer wall of the discharge port and inserted into the sealing groove, the top end of the discharge port is fixedly connected to the bottom end of the rotating scraper, and a switch for cutting off or releasing material discharge is provided inside the discharge port.

[0006] Optionally, the driving mechanism includes a support cover fixedly connected to the bottom of the vessel body, a motor fixedly connected inside the support cover, a gear fixedly connected to the output shaft of the motor, a gear groove fixedly sleeved at the bottom of the discharge port and meshing with the gear, and a guide port provided at the top of the discharge port.

[0007] Optionally, the inner wall of the vessel is fixedly connected to a fixed extrusion plate that holds the rotating scraper.

[0008] Optionally, a limiting block that locks the rotating scraper is fixedly connected to the top of the fixed extrusion plate.

[0009] Optionally, the top of the vessel body is movably provided with a top cover, and the top of the top cover is provided with a drive mechanism for driving the stirring rod.

[0010] Optionally, the outer wall of the vessel body is fixedly provided with a support bracket for supporting the vessel body.

[0011] In summary, this application includes at least one of the following beneficial technical effects:

[0012] This invention utilizes a combination of a rotating scraper, an external discharge pipe, a transmission mechanism, and a drive mechanism. The rotating scraper scrapes along the inner wall of the reactor, effectively gathering materials that were originally scattered and adhered to various parts of the reactor wall. Unlike before, materials are no longer dispersed throughout the entire inner wall of the reactor, making cleaning much easier. Simultaneously, the gathered material can be discharged from the reactor through the external discharge pipe under gravity, achieving efficient material recovery and greatly reducing waste caused by material residue. Effectively removing material adhering to the reactor wall also prevents cross-contamination with subsequent batches, thus ensuring that each batch of polyurethane product has consistent quality and performance. Attached Figure Description

[0013] Figure 1 A schematic diagram of the structure of a polyurethane-specific production reactor according to this utility model is provided;

[0014] Figure 2 for Figure 1 Partial structural diagram;

[0015] Figure 3 for Figure 2 A partial cross-sectional structural diagram;

[0016] Figure 4 for Figure 3 A partial cross-sectional structural diagram;

[0017] Figure 5 for Figure 4 A schematic diagram of the split structure.

[0018] Reference numerals in the attached drawings: 1. Kettle body; 11. Discharge port; 12. Fixed extrusion plate; 13. Limiting block; 14. Top cover; 15. Drive mechanism; 16. Support; 2. Outer discharge pipe; 21. Sealing groove; 22. Discharge port; 23. Sealing ring; 24. Guide port; 25. Gear groove; 26. Rotating scraper; 3. Support cover; 31. Motor; 32. Gear. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0020] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0021] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example

[0026] like Figures 1 to 5 As shown, this utility model proposes a polyurethane-specific production vessel, including a vessel body 1 and a discharge port 11 opened at the bottom of the vessel body 1. A top cover 14 is movably provided at the top of the vessel body 1, and a drive mechanism 15 for driving the stirring rod is provided on the top of the top cover 14. A bracket 16 for supporting the vessel body 1 is fixedly provided on the outer wall of the vessel body 1. It also includes a rotating scraper 26 movably disposed inside the vessel body 1 and tightly attached to the inner wall of the vessel body 1. The rotating scraper 26 is made of an inner metal material and an outer silicone rubber material. Silicone rubber has excellent softness and elasticity, a comfortable feel, and its molecular chains have high flexibility, allowing it to deform to a large extent under different external forces and quickly return to its original shape after the external force is removed, similar to ordinary rubber. Furthermore, silicone rubber can generally be used for a long time at high temperatures of 200℃. Its function on the rotating scraper 26 is to ensure that the rotating scraper 26 is in close contact with the inner wall of the vessel body 1, so as to thoroughly scrape the material. A fixed extrusion plate 12 is fixedly connected to the inner wall of the vessel body 1 to hold the rotating scraper 26. A limiting block 13 is fixedly connected to the top of the fixed extrusion plate 12 to hold the rotating scraper 26. The limiting block 13 ensures that there is a gap when the fixed extrusion plate 12 is in contact, and this gap is not large, so that the scraped material can be gathered together. At the same time, the shape of the limiting block 13 can hold the rotating scraper 26 rotating in both directions. The discharge pipe 2 is fixedly connected to the discharge hole 11 at the bottom of the vessel body 1.

[0027] Furthermore, such as Figures 3 to 5 As shown, the discharge outer pipe 2 has an internal transmission mechanism that drives the rotating scraper 26 to rotate around the discharge hole 11. The transmission mechanism includes a sealing groove 21 inside the discharge outer pipe 2. A discharge port 22 is slidably installed inside the discharge outer pipe 2. A guide port 24 is provided at the top of the discharge port 22 to ensure that the material flowing towards the top of the discharge port 22 flows quickly into the discharge port 22. A sealing ring 23, made of rubber, is fixedly fitted onto the outer wall of the discharge port 22 and inserted into the sealing groove 21. The sealing ring 23 ensures that no gaps are formed between the outer wall of the discharge port 22 and the inner wall of the discharge outer pipe 2 for material to flow through. The top of the discharge port 22 is fixedly connected to the bottom of the rotating scraper 26. A switch is provided inside the discharge port 22 to cut off or release the material discharge.

[0028] Furthermore, such as Figures 2 to 3 As shown, a drive mechanism for switching the transmission mechanism is installed at the bottom of the vessel body 1. The drive mechanism includes a support cover 3 fixedly connected to the bottom of the vessel body 1. A motor 31 is fixedly connected inside the support cover 3. A gear 32 is fixedly connected to the output shaft of the motor 31. A gear groove 25 that meshes with the gear 32 is fixedly sleeved at the bottom of the discharge port 22.

[0029] In this embodiment, when a polyurethane-specific production reactor is required, such as... Figure 1 As shown, after the liquid polyurethane in the vessel 1 is stirred, simply opening the switch in the outlet 22 allows the liquid material in the vessel 1 to be discharged from the outlet 11 by gravity. After all the material in the vessel 1 has been discharged, a lot of material will adhere to the inner wall of the vessel 1. At this time, simply start the motor 31 in the support cover 3. After the motor 31 starts, the output shaft drives the gear 32 to rotate. Since the gear 32 and the gear groove 25 are meshed, the gear 32 drives the gear groove 25 to rotate, and the gear groove 25 drives the outlet 22 to rotate at the bottom of the outlet 11. At the same time, the top of the outlet 22 will drive the rotating scraper 26 to rotate inside the vessel 1, so that the rotating scraper 26 scrapes all the material on the inner wall of the vessel 1 towards the fixed extrusion plate 12. When the rotating scraper 26 is about to contact the fixed extrusion plate 12, it will be stopped by the limiting block 13 at the top of the fixed extrusion plate 12, thereby causing the material adhering to the inner wall of the vessel body 1 to gather. This material will flow towards the discharge hole 11 between the fixed extrusion plate 12 and the rotating scraper 26 due to gravity, and finally cause most of the material adhering to the inner wall of the vessel body 1 to be discharged from the discharge hole 11.

[0030] The preferred embodiments of this utility model described above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A polyurethane-specific production vessel, comprising a vessel body (1) and a discharge port (11) formed at the bottom of the vessel body (1), characterized in that, Also includes: A rotating scraper (26) is set inside the vessel body (1) and is in close contact with the inner wall of the vessel body (1); The discharge pipe (2) is fixedly connected to the discharge hole (11) at the bottom of the vessel body (1). The discharge pipe (2) is equipped with a transmission mechanism that drives the rotating scraper (26) to rotate around the discharge hole (11). A drive mechanism is installed at the bottom of the vessel body (1) to switch the transmission mechanism on and off; The transmission mechanism includes a sealing groove (21) opened in the discharge outer tube (2), and a discharge port (22) is slidably installed inside the discharge outer tube (2). A sealing ring (23) is fixedly sleeved on the outer wall of the discharge port (22) and inserted into the sealing groove (21). The top end of the discharge port (22) is fixedly connected to the bottom end of the rotating scraper (26). The discharge port (22) is provided with a switch to cut off or release the material discharge.

2. The polyurethane-specific production reactor according to claim 1, characterized in that, The driving mechanism includes a support cover (3) fixedly connected to the bottom of the vessel body (1), a motor (31) fixedly connected inside the support cover (3), a gear (32) fixedly connected to the output shaft of the motor (31), a gear groove (25) fixedly sleeved at the bottom of the discharge port (22) and meshing with the gear (32), and a guide port (24) provided at the top of the discharge port (22).

3. The polyurethane-specific production reactor according to claim 1, characterized in that, The inner wall of the vessel body (1) is fixedly connected to a fixed extrusion plate (12) that holds the rotating scraper (26).

4. The polyurethane-specific production reactor according to claim 3, characterized in that, The top end of the fixed extrusion plate (12) is fixedly connected to a limiting block (13) that holds the rotating scraper (26).

5. A polyurethane-specific production reactor according to claim 1, characterized in that, The top of the vessel body (1) is movably provided with a top cover (14), and the top of the top cover (14) is provided with a drive mechanism (15) for driving the stirring rod.

6. The polyurethane-specific production reactor according to claim 1, characterized in that, The outer wall of the vessel body (1) is fixedly provided with a support (16) for supporting the vessel body (1).

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