Preheating and mixing equipment for production of dimethyl thio toluenediamine
By designing preheated mixing equipment and using high-temperature nitrogen and stirring rod structure, the problems of poor mixing effect and difficult equipment cleaning in dimethylthiotoluenediamine production are solved, and more efficient stirring and reduced maintenance costs are achieved.
Patent Information
- Application Number
- CN202420765096.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-15
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-15
AI Technical Summary
The raw material mixing effect is poor during the production process of dimethylthio toluene diamine, and the addition of catalyst at low temperature causes temperature fluctuations. After the equipment integrated structure is used for a long time, pollutants adhere to the barrel wall, which forms scaling, making it difficult to clean, and increases maintenance costs.
A preheating mixing equipment including jacket, raw material tank, alkylated solvent tank, and high-temperature nitrogen tank was designed, and mixed with a rotary shaft and agitating rod, and preheated by high-temperature nitrogen, combined with motor, toothed ring, and driven The gear and cleaning rod structure facilitate cleaning the inner wall of the shell and avoid scaling affecting the stirring effect.
It improves the mixing uniformity and temperature uniformity of raw materials, reduces equipment maintenance costs, and extends the service life of the equipment.
Smart Images
Figure CN222196568U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical synthesis equipment, in particular to preheating mixing equipment for producing dimethylthiotoluenediamine. Background Art
[0002] Dimethylthiotoluenediamine is a new type of polyurethane elastomer curing crosslinking agent, which mainly contains two isomers, namely a mixture of 2,4- and 2,6-dimethylthiotoluenediamine (the ratio is about 77 80 / 17 20). Compared with the commonly used MOCA, it is a liquid with lower viscosity at room temperature, can be used for construction operations at low temperatures, and has the advantages of low chemical equivalent.
[0003] When adding raw materials, the material mixing effect is poor and they cannot be added to the reaction system quickly and evenly. Moreover, the temperature of these additives is low when they are added, which can easily cause temperature fluctuations in the reaction system. In addition, the equipment is an integrated structure. After long-term use, pollutants will adhere to the barrel wall to form scale that is difficult to clean, making cleaning difficult and increasing maintenance costs. Utility Model Content
[0004] In order to make up for the above shortcomings, the utility model provides a preheating mixing equipment for the production of dimethylthiotoluenediamine, aiming to improve the problems of poor mixing effect when adding raw materials, easy temperature fluctuation of the system caused by adding catalyst at low temperature, and difficulty in cleaning due to the contaminants adhering to the barrel wall after long-term use.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: preheating mixing equipment for producing dimethylthiotoluene diamine, comprising a jacket, a raw material tank, an alkylation solvent tank, and a high-temperature nitrogen tank, wherein a catalyst port is fixedly connected to the front middle side of the jacket, a motor is fixedly connected to the upper middle side of the jacket, a shell is fixedly connected to the inside of the jacket, a gear ring is fixedly connected to the bottom and upper sides of the shell, a rotating shaft is fixedly connected to the output end of the motor, a stirring blade is fixedly connected to the rotating shaft, a stirring rod is equidistantly fixedly connected to the bottom of the rotating shaft, the bottom of the rotating shaft is rotatably connected to the shell, a connecting rod is fixedly connected to the upper part of the rotating shaft, cleaning rods are fixedly connected to both sides of the bottom of the connecting rod, cleaning blades are fixedly connected to the cleaning rods at equal distances, the upper end and the bottom end of the cleaning rod are both rotatably connected to driven gears, and the driven gears are meshed with the gear ring, an outlet is provided at the bottom of the shell, and a valve is provided inside the outlet.
[0006] Furthermore, the outlets of the raw material tank and the alkylation solvent tank are respectively connected to one end of a delivery pipe, the other end of the delivery pipe is connected to the front middle side of a metering pump, the rear middle side of the metering pump is connected to a metering port, and the metering port is fixedly connected to the outer middle side of the jacket.
[0007] Furthermore, a ring is fixedly connected to the outer bottom side of the jacket, and brackets are fixedly connected to the outer side of the ring at equal distances.
[0008] Further, the outlet of the high-temperature nitrogen tank is fixedly connected to one end of a nitrogen pipe, the other end of the nitrogen pipe is fixedly connected to a high-temperature nitrogen inlet, the high-temperature nitrogen inlet is fixedly connected to the rear middle side of the jacket, the front middle side of the high-temperature nitrogen tank is fixedly connected to one end of a nitrogen outlet, and the other end of the nitrogen outlet is fixedly connected to the rear bottom side of the jacket.
[0009] Furthermore, the metering port, catalyst port and outlet all pass through the jacket and are fixedly connected to the shell.
[0010] Furthermore, the cleaning leaves are in contact with the interior of the shell.
[0011] Furthermore, the stirring rod is close to the cleaning rod.
[0012] Furthermore, the high-temperature nitrogen inlet and the nitrogen outlet pass through the jacket and are not connected to the shell.
[0013] The utility model has the following beneficial effects:
[0014] In the utility model, the rotating shaft and the stirring rod are used to mix the dimethylthiotoluene diamine raw material, and high-temperature nitrogen is introduced into the jacket to preheat the diaminotoluene, thereby effectively increasing the temperature of the shell.
[0015] In the utility model, the inner wall of the shell is easily cleaned by the mutual cooperation of the motor, the gear ring, the driven gear, the connecting rod and the cleaning rod, so as to avoid the scale on the barrel wall causing resistance to stirring and affecting the stirring effect, and at the same time reduce the maintenance cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is the overall structural diagram of the preheating mixing equipment for producing dimethylthiotoluenediamine proposed by the utility model;
[0017] Figure 2 It is a right sectional view of the preheating mixing equipment for producing dimethylthiotoluenediamine proposed by the utility model;
[0018] Figure 3 for Figure 1 Detailed breakdown of the interior of the shell in the overall structure diagram;
[0019] Figure 4 The utility model provides a bottom view of the preheating mixing equipment for producing dimethylthiotoluenediamine.
[0020] Legend:
[0021] 1. Jacket; 2. Motor; 3. Shell; 4. Raw material tank; 5. Alkylation solvent tank; 6. Delivery pipe; 7. Metering pump; 8. Bracket; 9. Holding ring; 10. Catalyst port; 11. Metering port; 12. High-temperature nitrogen tank; 13. High-temperature nitrogen inlet; 14. Nitrogen outlet; 15. Nitrogen pipe; 16. Rotating shaft; 17. Connecting rod; 18. Stirring blade; 19. Cleaning rod; 20. Cleaning blade; 21. Gear ring; 22. Driven gear; 23. Outlet; 24. Stirring rod; 25. Valve. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] Reference Figure 1-Figure 4 The utility model provides an embodiment: a preheating mixing device for producing dimethylthiotoluene diamine, comprising a jacket 1, a raw material tank 4, an alkylation solvent tank 5, and a high-temperature nitrogen tank 12. A catalyst port 10 is fixedly connected to the front middle side of the jacket 1, a motor 2 is fixedly connected to the upper middle side of the jacket 1, a shell 3 is fixedly connected to the inside of the jacket 1, a gear ring 21 is fixedly connected to the bottom and upper sides of the shell 3, a rotating shaft 16 is fixedly connected to the output end of the motor 2, a stirring blade 18 is fixedly connected to the rotating shaft 16, and a rotating shaft 16 is fixedly connected to the stirring blade 18. The bottom of the shaft 16 is equidistantly fixedly connected with a stirring rod 24, the bottom of the rotating shaft 16 is rotatably connected to the shell 3, the upper part of the rotating shaft 16 is fixedly connected with a connecting rod 17, both sides of the bottom of the connecting rod 17 are fixedly connected with cleaning rods 19, and cleaning leaves 20 are equidistantly fixedly connected to the cleaning rods 19. The upper and bottom ends of the cleaning rods 19 are rotatably connected with driven gears 22, and the driven gears 22 are meshed with the gear ring 21. An outlet 23 is provided at the bottom of the shell 3, and a valve 25 is provided inside the outlet 23.
[0024] A catalyst port 10 is provided through the front middle side of the jacket 1, a motor 2 is fixedly connected to the upper middle side of the jacket 1, a gear ring 21 is fixedly connected to the bottom and upper sides of the shell 3, a rotating shaft 16 is connected to the output end of the motor 2, a stirring blade 18 is fixedly connected to the rotating shaft 16, a stirring rod 24 is fixedly connected to the bottom of the rotating shaft 16 at an equidistant distance, the bottom of the rotating shaft 16 is rotatably connected to the shell 3, a connecting rod 17 is fixedly connected to the upper part of the rotating shaft 16, cleaning rods 19 are fixedly connected to both sides of the bottom of the connecting rod 17, cleaning blades 20 are fixedly connected to the cleaning rod 19 at an equidistant distance, the upper and bottom ends of the cleaning rod 19 are rotatably connected to driven gears 22, and the driven gears 22 are meshed with the gear ring 21. Chemicals can be mixed and waste can be cleaned up through these mechanisms, an outlet 23 is provided at the bottom of the shell 3, and a valve 25 is provided inside the outlet 23 to collect the chemicals after stirring.
[0025] The outlets of the raw material tank 4 and the alkylation solvent tank 5 are respectively connected to one end of a delivery pipe 6, the other end of the delivery pipe 6 is connected to the front middle side of a metering pump 7, the rear middle side of the metering pump 7 is connected to a metering port 11, the metering port 11 is fixedly connected to the outer middle side of the jacket 1, the outer bottom side of the jacket 1 is fixedly connected to a ring 9, the outer side of the ring 9 is equidistantly fixedly connected to a bracket 8, the outlet of the high-temperature nitrogen tank 12 is fixedly connected to one end of a nitrogen pipe 15, the other end of the nitrogen pipe 15 is fixedly connected to a high-temperature nitrogen inlet 13 The high-temperature nitrogen inlet 13 is fixedly connected to the middle side of the rear part of the jacket 1, one end of the nitrogen outlet 14 is fixedly connected to the middle side of the front part of the high-temperature nitrogen tank 12, and the other end of the nitrogen outlet 14 is fixedly connected to the bottom side of the rear part of the jacket 1. The metering port 11, the catalyst port 10 and the outlet 23 all pass through the jacket 1 and are fixedly connected to the shell 3. The cleaning leaves 20 are in contact with the inside of the shell 3. The stirring rod 24 is close to the cleaning rod 19. The high-temperature nitrogen inlet 13 and the nitrogen outlet 14 pass through the jacket 1 and are not connected to the shell 3.
[0026] One end of a delivery pipe 6 is connected to the outlet of the raw material tank 4 and the alkylation solvent tank 5 respectively, and the other end of the delivery pipe 6 is connected to the front middle side of the metering pump 7, and the rear middle side of the metering pump 7 is connected to a metering port 11, which is fixedly connected to the outer middle side of the jacket 1, so that the required raw materials can be accurately placed. A holding ring 9 is fixedly connected to the outer bottom side of the jacket 1, and a bracket 8 is fixedly connected to the outer side of the holding ring 9 at an equidistant distance to stabilize the jacket. The high-temperature nitrogen tank 12 is used to heat the raw materials in the shell. In order to better stir, a nitrogen outlet 14 is fixedly connected to the front middle side of the high-temperature nitrogen tank 12, so that the nitrogen can be recycled.
[0027] Working principle: There is a catalyst port 10 at the front middle side of the jacket 1, and the outlets of the raw material tank 4 and the alkylation solvent tank 5 are respectively connected to one end of the delivery pipe 6, and the other end of the delivery pipe 6 is connected to the front middle side of the metering pump 7, and the rear middle side of the metering pump 7 is connected to the metering port 11, and the metering port 11 is fixedly connected to the outer middle side of the jacket 1, and the required raw materials can be accurately placed. The outer bottom side of the jacket 1 is fixedly connected to a holding ring 9, and the outer side of the holding ring 9 is equidistantly fixedly connected to a bracket 8 for stabilizing the jacket. The high-temperature nitrogen tank 12 is used to heat the raw materials in the shell. In order to better stir, the front middle side of the high-temperature nitrogen tank 12 is fixedly connected to a nitrogen outlet 14, which can recycle the nitrogen. The upper middle side of the jacket 1 is fixedly connected to a motor 2, and the shell A gear ring 21 is fixedly connected to the bottom and upper sides of the body 3, a rotating shaft 16 is connected to the output end of the motor 2, a stirring blade 18 is fixedly connected to the rotating shaft 16, a stirring rod 24 is fixedly connected to the bottom of the rotating shaft 16 at an equidistant distance, the bottom of the rotating shaft 16 is rotatably connected to the shell 3, a connecting rod 17 is fixedly connected to the upper part of the rotating shaft 16, cleaning rods 19 are fixedly connected to both sides of the bottom of the connecting rod 17, cleaning blades 20 are fixedly connected to the cleaning rod 19 at an equidistant distance, the upper and bottom ends of the cleaning rod 19 are rotatably connected to driven gears 22, and the driven gears 22 are meshed with the gear ring 21. Chemicals can be mixed and waste can be cleaned up through these mechanisms, an outlet 23 is provided at the bottom of the shell 3, and a valve 25 is provided inside the outlet 23 to collect the chemicals after stirring.
[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A preheating mixing device for producing dimethylthiotoluenediamine, comprising a jacket (1), a raw material tank (4), an alkylation solvent tank (5), and a high-temperature nitrogen tank (12). Features: The front middle side of the jacket (1) is fixedly connected to a catalyst port (10), the upper middle side of the jacket (1) is fixedly connected to a motor (2), the inside of the jacket (1) is fixedly connected to a shell (3), the bottom and upper sides of the shell (3) are fixedly connected to a gear ring (21), the output end of the motor (2) is fixedly connected to a rotating shaft (16), the rotating shaft (16) is fixedly connected to a stirring blade (18), the bottom of the rotating shaft (16) is equidistantly fixedly connected to a stirring rod (24), the bottom of the rotating shaft (16) is equidistantly connected to the shell The housing (3) is rotatably connected to the housing (3), the upper part of the rotating shaft (16) is fixedly connected to a connecting rod (17), both sides of the bottom of the connecting rod (17) are fixedly connected to cleaning rods (19), cleaning leaves (20) are fixedly connected to the cleaning rods (19) at equal distances, the upper end and the bottom end of the cleaning rod (19) are rotatably connected to driven gears (22), the driven gears (22) are meshed with a gear ring (21), and the bottom of the housing (3) is provided with an outlet (23), and a valve (25) is provided inside the outlet (23).
2. The preheating mixing equipment for producing dimethylthiotoluenediamine according to claim 1, Features: The outlets of the raw material tank (4) and the alkylation solvent tank (5) are respectively connected to one end of a delivery pipe (6), the other end of each of the delivery pipes (6) is connected to the front middle side of a metering pump (7), the rear middle side of each of the metering pumps (7) is connected to a metering port (11), and the metering port (11) is fixedly connected to the outer middle side of the jacket (1).
3. The preheating mixing equipment for producing dimethylthiotoluenediamine according to claim 1, Features: A holding ring (9) is fixedly connected to the outer bottom side of the jacket (1), and brackets (8) are fixedly connected to the outer side of the holding ring (9) at equal distances.
4. The preheating mixing equipment for producing dimethylthiotoluenediamine according to claim 1, Features: The outlet of the high-temperature nitrogen tank (12) is fixedly connected to one end of a nitrogen pipe (15), the other end of the nitrogen pipe (15) is fixedly connected to a high-temperature nitrogen inlet (13), the high-temperature nitrogen inlet (13) is fixedly connected to the rear middle side of the jacket (1), the front middle side of the high-temperature nitrogen tank (12) is fixedly connected to one end of a nitrogen outlet (14), the other end of the nitrogen outlet (14) is fixedly connected to the rear bottom side of the jacket (1).
5. The preheating mixing equipment for producing dimethylthiotoluenediamine according to claim 2, Features: The metering port (11), the catalyst port (10) and the outlet (23) all penetrate the jacket (1) and are fixedly connected to the shell (3).
6. The preheating mixing equipment for producing dimethylthiotoluenediamine according to claim 1, Features: The cleaning leaves (20) are in contact with the interior of the shell (3).
7. The preheating mixing equipment for producing dimethylthiotoluenediamine according to claim 1, Features: The stirring rod (24) is close to the cleaning rod (19).
8. The preheating mixing equipment for producing dimethylthiotoluenediamine according to claim 4, Features: The high-temperature nitrogen inlet (13) and the nitrogen outlet (14) penetrate the jacket (1) and are not connected to the shell (3).