Constant-temperature polyurethane production reaction kettle
By adopting the insulation structure of interlayer and vacuum layer in the polyurethane production reactor, the design of external heater and motor drive of the heater, the problems of temperature stability and stirring uniformity are solved, and the uniform mixing and fullness of the polyurethane reactants are achieved. Response, improving product quality.
Patent Information
- Application Number
- CN202421209082.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-30
AI Technical Summary
In the production process of polyurethane, it is difficult for the prior art to achieve a stable and constant temperature temperature, and the heating device directly placed in the reactor can easily lead to raw material contamination, and uneven stirring affects product quality.
A constant temperature polyurethane production reactor was designed, adopting a thermal insulation structure of interlayer and vacuum layer. The heater was set on the outside of the inner cylinder. The stirring rod was driven by a motor. The stirring leaves were evenly arranged and set inclined. The through holes were uniformly spaced, and combined with the vibrator to realize. Uniform stirring and temperature control of the polyurethane reactants.
It achieves a stable and constant temperature, avoids raw material pollution, ensures uniform mixing and sufficient reaction of polyurethane reactants, and improves the stability and consistency of product quality.
Smart Images
Figure CN222446518U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polyurethane production, in particular to a constant temperature polyurethane production reaction kettle. Background Art
[0002] Polyurethane is an important synthetic polymer, which is composed of polymerized urethane. It is a versatile material with a wide range of applications, including but not limited to coatings, adhesives, elastomers, foams, rigid plastics and cellulose materials. Polyurethane can be obtained by adjusting its chemical structure and synthesis method to obtain a variety of materials with different properties and uses, so it is widely used in industry and daily life.
[0003] At present, in the production process of polyurethane, it is common practice to place the heating device in the reactor. This design is conducive to improving the heating speed. However, this method also has some disadvantages. First, since the heating device is placed directly in the reactor, temperature control becomes relatively difficult and it is difficult to achieve a stable constant temperature. Secondly, the heating device will cause the raw materials inside the reactor to be easily contaminated, which may affect the quality and purity of the product. In order to overcome the problem of uneven stirring, double-sided stirring blades are generally used for stirring. However, since polyurethane has a certain viscosity after molding, traditional stirring blades cannot achieve a good uniform stirring effect, which may lead to unstable product quality or uneven performance. Utility Model Content
[0004] In order to solve the above problems, the utility model provides a constant temperature polyurethane production reactor which is easy to control the temperature, has a heat preservation structure, is conducive to achieving continuous constant temperature, and can evenly stir viscous polyurethane.
[0005] In order to solve the above technical problems, the technical solution proposed by the utility model is: a constant temperature polyurethane production reactor, including a reactor body, a stirring rod, and a heater. The stirring rod is rotatably connected and arranged in the reactor body, and the stirring rod is driven by a motor fixed at the upper end of the reactor body. A plurality of stirring blades are connected on both sides of the stirring rod, and a plurality of through holes are provided on the stirring blades. The reactor body includes an inner cylinder, a middle cylinder and an outer cylinder, and an interlayer is provided between the inner cylinder and the middle cylinder. A plurality of heaters are fixed in the interlayer, and a vacuum layer is provided between the middle cylinder and the outer cylinder. A feeding pipe is provided on the side wall of the reactor body, a vibrator is connected to the inner bottom surface of the reactor body, and a temperature sensor and a discharge pipe are provided on the bottom surface of the reactor body.
[0006] Furthermore, the reactor body is fixed by a support frame arranged at its lower end.
[0007] Based on the above features, it is convenient to stably fix the reactor body and to discharge the material from the bottom.
[0008] Furthermore, the stirring blades are evenly arranged on both sides of the stirring rod and are arranged obliquely, and the through holes are evenly spaced on the stirring blades.
[0009] Based on the above characteristics, the polyurethane reactants can be uniformly and fully stirred, with high stirring efficiency and good effect.
[0010] Furthermore, the heaters are evenly spaced within the interlayer.
[0011] Based on the above features, heat can be evenly transferred into the reactor body, which helps to ensure the temperature uniformity of the reaction.
[0012] Furthermore, the two ends of the feed pipe are respectively arranged at the upper and lower ends of the reactor body, and the vibrator is arranged directly below the feed pipe.
[0013] Based on the above characteristics, effective vibration of the polyurethane reactants can be achieved, which is beneficial to promoting rapid and uniform mixing thereof.
[0014] Furthermore, a sampling tube is connected to the discharge pipe.
[0015] Based on the above characteristics, it is convenient to take samples to check the reaction conditions, thereby ensuring good product quality.
[0016] Compared with the prior art, the utility model has the following advantages: the design of the interlayer and the vacuum layer is conducive to heat preservation, preventing heat loss, ensuring the stability of the reaction temperature, and achieving continuous constant temperature; the heater is arranged on the outside of the inner cylinder to avoid direct contact with the polyurethane reactant, which can avoid pollution and facilitate accurate control of the reaction temperature; at the same time, the setting of the temperature sensor can monitor the temperature of the reaction liquid in real time, thereby achieving accurate control of the temperature; the stirring rod is driven by a motor, the stirring blades are evenly arranged on both sides of the stirring rod, and the through holes are evenly arranged on the stirring blades. This design helps to achieve uniform mixing of viscous polyurethane reactants and ensure the adequacy and consistency of the reaction; the setting of the vibrator can further promote the uniform mixing of the polyurethane reactants. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a three-dimensional diagram of the utility model;
[0018] Figure 2 It is the front view of the utility model;
[0019] Figure 3 It is a top sectional view of the utility model;
[0020] Figure 4 It is a three-dimensional cross-sectional view of the utility model.
[0021] As shown in the figure: 1. Reactor body; 1.1. Inner cylinder; 1.2. Middle cylinder; 1.3. Outer cylinder; 1.4. Interlayer; 1.5. Vacuum layer; 2. Stirring rod; 3. Heater; 4. Motor; 5. Stirring blade; 6. Feed pipe; 7. Vibrator; 8. Temperature sensor; 9. Discharge pipe; 10. Support frame; 11. Sampling tube. DETAILED DESCRIPTION
[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0023] Combined with Figure 1 , Attachment Figure 4 A constant temperature polyurethane production reactor comprises a reactor body 1, a stirring rod 2, and a heater 3. The reactor body 1 is fixed by a support frame 10 arranged at its lower end, which is convenient for stably fixing the reactor body 1 and discharging materials from the bottom.
[0024] Combined with Figure 4 The stirring rod 2 is rotatably connected to the reactor body 1, and is driven by a motor 4 fixed to the upper end of the reactor body 1. A plurality of stirring blades 5 are connected to both sides of the stirring rod 2, and a plurality of through holes are provided on the stirring blades 5. The stirring blades 5 are evenly arranged on both sides of the stirring rod 2 and are tilted. The through holes are evenly spaced on the stirring blades 5, so that the polyurethane reactant can be evenly and fully stirred, and the stirring efficiency is high and the effect is good.
[0025] Combined with Figure 3 The reactor body 1 includes an inner cylinder 1.1, a middle cylinder 1.2 and an outer cylinder 1.3. An interlayer 1.4 is provided between the inner cylinder 1.1 and the middle cylinder 1.2. A plurality of heaters 3 are fixedly arranged in the interlayer 1.4. A vacuum layer 1.5 is provided between the middle cylinder 1.2 and the outer cylinder 1.3. The heaters 3 are evenly spaced in the interlayer 1.4. Heat can be evenly transferred to the reactor body 1, which helps to ensure the temperature uniformity of the reaction.
[0026] Combined with Figure 4 A feed pipe 6 is provided on the side wall of the reactor body 1, and a vibrator 7 is connected to the inner bottom surface of the reactor body 1. The two ends of the feed pipe 6 are respectively arranged at the upper and lower ends of the reactor body 1. The vibrator 7 is arranged directly below the feed pipe 6, which can realize effective vibration of the polyurethane reactant, which is conducive to promoting its rapid and uniform mixing.
[0027] Combined with Figure 1 , Attachment Figure 4 The bottom surface of the reactor body 1 is provided with a temperature sensor 8 and a discharge pipe 9. The discharge pipe 9 is connected with a sampling tube 11, which is convenient for sampling and checking the reaction status, thereby ensuring good product quality.
[0028] The specific implementation mode of the utility model is as follows: the support frame 10 is installed and fixed at a suitable position to achieve stable fixation of the reactor body 1, the reactor is connected to an external power supply, the polyurethane reactant is added into the reactor body 1 through the feed pipe 6, the heater 3 is turned on to heat the inside of the reactor body 1, and the heater 3 is controlled and adjusted according to the temperature feedback from the temperature sensor 8 to keep the reactor body 1 at the required reaction temperature. At the same time, the interlayer 1.4 and the vacuum layer 1.5 can keep the inside of the reactor body 1 warm to keep it at a constant temperature, and the motor 4 and the vibrator 7 are turned on at the same time. The vibrator 7 vibrates and mixes the polyurethane reactant, the motor 4 drives the stirring rod 2 to rotate, and the stirring rod 2 drives the stirring blade 5 to rotate to fully stir and mix the polyurethane reactant and make it evenly heated. During the process, part of the polyurethane reactant passes through the through hole, which not only facilitates the smooth rotation of the stirring blade 5, but also promotes its full mixing. After a certain reaction time, samples are taken from the sampling tube 11 to check the reaction situation. After the polyurethane reactant reacts fully, the discharge pipe 9 is opened to discharge the material from the discharge pipe 9.
[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A thermostatic polyurethane production reactor, comprising a reactor body (1), a stirring rod (2), and a heater (3), characterized in that: The stirring rod (2) is rotatably connected and arranged in the reactor body (1). The stirring rod (2) is driven by a motor (4) fixed to the upper end of the reactor body (1). A plurality of stirring blades (5) are connected to both sides of the stirring rod (2). The stirring blades (5) are provided with a plurality of through holes. The reactor body (1) comprises an inner cylinder (1.1), a middle cylinder (1.2) and an outer cylinder (1.3). An interlayer (1.4) is provided between the inner cylinder (1.1) and the middle cylinder (1.2). A plurality of heaters (3) are fixed in the interlayer (1.4). A vacuum layer (1.5) is provided between the middle cylinder (1.2) and the outer cylinder (1.3). A feeding pipe (6) is provided on the side wall of the reactor body (1). A vibrator (7) is connected to the inner bottom surface of the reactor body (1). A temperature sensor (8) and a discharge pipe (9) are provided on the bottom surface of the reactor body (1).
2. A constant temperature polyurethane production reactor according to claim 1, characterized in that: The reactor body (1) is fixed by a support frame (10) arranged at its lower end.
3. A constant temperature polyurethane production reactor according to claim 1, characterized in that: The stirring blades (5) are evenly arranged on both sides of the stirring rod (2) and are arranged obliquely, and the through holes are evenly spaced and arranged on the stirring blades (5).
4. A constant temperature polyurethane production reactor according to claim 1, characterized in that: The heaters (3) are evenly spaced and arranged in the interlayer (1.4).
5. A constant temperature polyurethane production reactor according to claim 1, characterized in that: The two ends of the feed pipe (6) are respectively arranged at the upper and lower ends of the reactor body (1), and the vibrator (7) is arranged directly below the feed pipe (6).
6. A constant temperature polyurethane production reactor according to claim 1, characterized in that: The discharge pipe (9) is connected to a sampling pipe (11).