Phenolic aldehyde amine curing agent mixing kettle

Abstract

A phenolic aldehyde amine curing agent mixing kettle comprises a tank body, the bottom of the tank body is fixedly connected with supporting legs, the bottom of the tank body is communicated with a discharging pipe, the upper portion of the tank body is communicated with a water inlet pipe, the top of the tank body is communicated with a feeding pipe and an exhaust pipe, a motor is installed on the top of the tank body, and a first stirring assembly used for stirring liquid in the tank body is installed in the tank body. The first stirring assembly is in transmission connection with the output end of the motor, a second stirring assembly rotating in the opposite direction of the first stirring assembly is installed on the outer side of the first stirring assembly, and the second stirring assembly is in transmission connection with the motor through a transmission assembly. The stirring paddles rotating in the opposite directions are arranged in the circumferential direction of the spiral stirring blade, so that raw materials at the center and the edge of the tank body form convection, and the raw materials in the tank body are uniformly mixed; raw materials accumulated on the inner side wall of the tank body are scraped by the rotating stirring paddle, so that the reaction of the raw materials in the tank body is more thorough, and the quality of the generated phenolic aldehyde amine curing agent can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of curing agent production equipment, in particular to a phenalkamine curing agent mixing kettle. Background Art

[0002] Phenolic amine curing agent is one of the curing agent varieties with the largest consumption in China at present. It is a non-toxic fine chemical product. The main raw materials of phenolic amine curing agent are phenol, amines and formaldehyde. The preparation steps of phenolic amine curing agent are as follows: first, heat and stir a certain amount of phenol and amines, and then slowly add formaldehyde and stir after the reaction is complete, and finally distill under reduced pressure until no water is evaporated.

[0003] At present, when preparing phenaldehyde amine curing agent, a mixing kettle is usually used to stir and mix the raw materials. For example, Chinese patent CN220496379U discloses a reaction kettle for curing agent production. The patent stirs the curing agent in the inner cylinder by a stirring mechanism, and at the same time drives the inner cylinder to rotate in the opposite direction relative to the stirring mechanism by a first motor, so that the stirring blades on the inner wall of the inner cylinder stir the curing agent, so that the curing agent close to the inner wall of the inner cylinder and the curing agent located at the center of the inner cylinder form convection, thereby making the curing agent ingredients more uniform and sufficient. However, the inner side wall of the inner cylinder of the patent is fixedly connected with a stirring blade, which will cause many dead angles to form at the connection between the inner cylinder and the stirring blade, and the raw materials for producing the curing agent will accumulate at these dead angles, resulting in incomplete reaction and affecting product quality. Therefore, there are still shortcomings and deficiencies in the prior art. Utility Model Content

[0004] The utility model provides a phenolic amine curing agent mixing kettle to solve the problems raised in the background technology.

[0005] In order to solve the problem of accumulation of curing agent raw materials in a mixing kettle, the technical solution adopted by the utility model is: a phenolic amine curing agent mixing kettle, comprising a tank body, a supporting leg for supporting the tank body fixedly connected to the bottom of the tank body, a discharge pipe connected to the bottom of the tank body, a water inlet pipe connected to the upper part of the tank body, a feed pipe and an exhaust pipe connected to the top of the tank body, when adding materials, the exhaust pipe can balance the atmospheric pressure inside the tank body and the outside, a motor is installed on the top of the tank body, a first stirring component for stirring the liquid in the tank body is installed in the tank body, the first stirring component is transmission-connected to the output end of the motor, a second stirring component rotating in the opposite direction to the first stirring component is installed on the outer side of the first stirring component, the second stirring component is transmission-connected to the motor through a transmission component, and the second stirring component rotating in the opposite direction to the first stirring component causes the raw materials at the center and edge of the tank body to form convection, thereby making the raw materials in the tank body mixed evenly.

[0006] The first stirring component includes a stirring shaft arranged on the same center line as the tank body, the stirring shaft is rotatably connected to the tank body, the top end of the stirring shaft is connected to the motor transmission, the outer wall of the stirring shaft is installed with a first bearing, a spiral stirring blade, and a second bearing in sequence from top to bottom, and the spiral stirring blade can make the raw materials in the tank body flow vertically; the second stirring component includes a ring gear, a support ring, and a plurality of stirring paddles, the inner wall of the ring gear is fixedly connected to the outer wall of the first bearing through a support rod, the ring gear is transmission-connected to the transmission component, the inner wall of the support ring is fixedly connected to the outer wall of the second bearing through a support rod, the stirring paddles are evenly spaced along the circumference of the spiral stirring blades, the top of the stirring paddle is fixedly connected to the ring gear, the bottom of the stirring paddle is fixedly connected to the support ring, the outer side of the stirring paddle abuts against the inner wall of the tank body, and the stirring paddle can scrape off the raw materials accumulated on the inner wall of the tank body.

[0007] Preferably, the transmission assembly includes a transmission shaft, which is rotatably mounted on the top of the tank body, and the transmission shaft is transmission-connected to the output end of the motor via a pulley assembly, and the bottom end of the transmission shaft extends into the tank body and is fixedly mounted with a driving gear, which meshes with the ring gear.

[0008] Preferably, a volumetric pump is installed on the top of the tank body, a feed box is installed above the volumetric pump, the bottom of the feed box is connected to the feed end of the volumetric pump, and the discharge end of the volumetric pump is connected to the feed pipe, and the feeding speed can be controlled by adjusting the flow rate of the volumetric pump.

[0009] Preferably, the feed box is made of a transparent material, and scales are printed on the outside of the feed box.

[0010] Preferably, an electric heating tape is laid on the outside of the tank body, and the electric heating tape can heat the raw materials in the tank body.

[0011] Preferably, a solenoid valve is installed on the discharge pipe.

[0012] The beneficial effects of the utility model are as follows: (1) the utility model provides a spiral stirring blade to facilitate the vertical flow of raw materials in the tank body, and provides a stirring paddle that rotates in the opposite direction to the spiral stirring blade to facilitate convection of raw materials at the center and edge of the tank body, thereby making the raw materials in the tank body evenly mixed, thereby improving the stirring efficiency and accelerating the reaction speed; (2) because the outer side of the stirring paddle abuts against the inner wall of the tank body, the rotating stirring paddle can scrape off the raw materials accumulated on the inner wall of the tank body, thereby making the raw materials in the tank body react more thoroughly, thereby improving the quality of the generated phenolic amine curing agent; (3) when adding formaldehyde into the tank body, the utility model can adjust the formaldehyde addition speed according to the temperature inside the tank body, thereby controlling the temperature inside the tank body within a certain range, thereby ensuring the normal progress of the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 Schematic diagram of the cross-section structure.

[0015] In the figure: 1. tank body, 2. supporting legs, 3. discharge pipe, 4. water inlet pipe, 5. feed pipe, 6. exhaust pipe, 7. motor, 8. transmission shaft, 9. bearing, 10. pulley assembly, 11. driving gear, 12. stirring shaft, 13. first bearing, 14. spiral stirring blade, 15. second bearing, 16. ring gear, 17. support ring, 18. stirring paddle, 19. support rod, 20. positive displacement pump, 21. feed box, 22. temperature sensor, 23. control module, 24. scale, 25. electric heating tape, 26. solenoid valve. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] like Figure 1-2 As shown, the utility model provides a phenolic amine curing agent mixing kettle, including a tank body 1, a supporting leg 2 for supporting is fixedly connected to the bottom of the tank body 1, a discharge pipe 3 is connected to the bottom of the tank body 1, a water inlet pipe 4 is connected to the upper part of the tank body 1, a feed pipe 5 and an exhaust pipe 6 are connected to the top of the tank body 1, a motor 7 is installed on the top of the tank body 1, a first stirring component for stirring the liquid in the tank body 1 is installed in the tank body 1, the first stirring component is connected to the output end of the motor 7 by transmission, a second stirring component rotating in the opposite direction to the first stirring component is installed on the outer side of the first stirring component, and the second stirring component is connected to the motor 7 by transmission through the transmission component; the first stirring component includes a stirring shaft 12 arranged on the same center line as the tank body 1, the stirring shaft 12 is connected to the tank body 1 for rotation, and the stirring shaft The top of 12 is transmission connected to the motor 7, and the outer wall of the stirring shaft 12 is installed with a first bearing 13, a spiral stirring blade 14, and a second bearing 15 in sequence from top to bottom; the second stirring component includes a ring gear 16, a support ring 17, and a plurality of stirring paddles 18. The inner wall of the ring gear 16 is fixedly connected to the outer wall of the first bearing 13 through a support rod 19, the ring gear 16 is transmission connected to the transmission component, the inner wall of the support ring 17 is fixedly connected to the outer wall of the second bearing 15 through the support rod 19, the stirring paddles 18 are distributed at equal intervals along the circumference of the spiral stirring blade 14, the top of the stirring paddle 18 is fixedly connected to the ring gear 16, the bottom of the stirring paddle 18 is fixedly connected to the support ring 17, and the outer side of the stirring paddle 18 abuts against the inner wall of the tank body 1.

[0018] Specifically, during use, after the motor 7 is started, the motor 7 drives the spiral stirring blade 14 to rotate through the stirring shaft 12. The spiral stirring blade 14 can not only stir the raw materials in the tank body 1, but also make the raw materials in the tank body 1 flow vertically. At the same time, the motor 7 drives the ring gear 16 to rotate in the opposite direction to the spiral stirring blade 14 through the transmission assembly. In this way, the ring gear 16 drives the stirring paddle 18 to rotate in the opposite direction to the spiral stirring blade 14, so that the raw materials close to the inner wall of the tank body 1 and the raw materials located at the center of the tank body 1 form convection, so that the raw materials in the tank body 1 are evenly mixed.

[0019] The utility model provides a spiral stirring blade 14 to facilitate the vertical flow of raw materials in the tank body 1, and provides a stirring paddle 18 that rotates in the opposite direction to the spiral stirring blade 14 to facilitate convection of raw materials at the center and edge of the tank body 1, so that the raw materials in the tank body 1 are evenly mixed, thereby improving the stirring efficiency and accelerating the reaction speed. In addition, since the outer side of the stirring paddle 18 abuts against the inner wall of the tank body 1, the rotating stirring paddle 18 can scrape off the raw materials accumulated on the inner wall of the tank body 1, so that the raw materials in the tank body 1 react more thoroughly, thereby improving the quality of the generated phenolic amine curing agent.

[0020] Preferably, in some embodiments, the transmission assembly includes a transmission shaft 8, which is rotatably mounted on the top of the tank body 1 through a bearing 9, and the transmission shaft 8 is transmission-connected to the output end of the motor 7 through a pulley assembly 10, and the bottom end of the transmission shaft 8 extends into the tank body 1 and is fixedly mounted with a driving gear 11, which is meshed with a ring gear 16. Specifically, when in use, the motor 7 drives the driving gear 11 to rotate in the same direction relative to the spiral stirring blade 14 through the pulley assembly 10 and the transmission shaft 8, and because the driving gear 11 and the ring gear 16 are meshed, the driving gear 11 drives the ring gear 16 to rotate in the opposite direction relative to the spiral stirring blade 14, so that the ring gear 16 can drive the stirring paddle 18 to rotate in the opposite direction relative to the spiral stirring blade 14.

[0021] Preferably, in some embodiments, a displacement pump 20 is installed on the top of the tank body 1, a feed box 21 is installed above the displacement pump 20, the bottom of the feed box 21 is connected to the feed end of the displacement pump 20, the discharge end of the displacement pump 20 is connected to the feed pipe 5, a temperature sensor 22 is installed on the lower bottom surface inside the tank body 1, and a control module 23 is fixedly connected to the outer wall of the tank body 1, and the control module 23 is electrically connected to the displacement pump 20 and the temperature sensor 22, respectively (the connection method between the control module 23 and the displacement pump 20 and the temperature sensor 22 is the prior art and will not be repeated here). Specifically, in the production process of phenolic amine curing agent, since the reaction is exothermic when formaldehyde is added, the speed of adding formaldehyde must be controlled to avoid the temperature in the tank body 1 being too high. When adding formaldehyde to the tank body 1, the formaldehyde is first added to the feed box 21, and the temperature sensor 22 transmits the temperature signal in the tank body 1 to the control module 23 in real time. When the temperature in the tank body 1 drops to T0, the control module 23 starts the displacement pump 20, and the displacement pump 20 slowly adds the formaldehyde in the feed box 21 to the tank body 1. Due to the exothermic reaction, the temperature in the tank body 1 rises. When the temperature in the tank body 1 rises to T1, the control module 23 pauses the displacement pump 20, and the temperature in the tank body 1 gradually drops to T0. This cycle is repeated, so that the reaction temperature can be controlled within a certain range, thereby ensuring the normal progress of the reaction.

[0022] Preferably, in some embodiments, the feed box 21 is made of transparent material, which may be glass, acrylic, etc. In this embodiment, the feed box 21 is made of glass, and the liquid level of the raw materials in the feed box 21 can be observed through the glass feed box 21. A scale 24 is printed on the outside of the feed box 21, so as to facilitate reading the volume of the added raw materials.

[0023] Preferably, in some embodiments, an electric heating tape 25 is laid on the outside of the tank body 1, and the temperature inside the tank body 1 can be heated to the temperature required for the reaction by setting the electric heating tape 25.

[0024] Preferably, in some embodiments, a solenoid valve 26 is installed on the discharge pipe 3, and the generated phenalkamine curing agent can be discharged by opening the solenoid valve 26.

[0025] When in use, first add a proper amount of clean water into the tank body 1 through the water inlet pipe 4, then start the volume pump 20 through the control module 23, and add a certain amount of phenol and amines into the feed box 21 in turn, the phenol and amines enter the tank body 1 through the feed pipe 5, and then start the electric heating belt 25 to heat the temperature in the tank body 1 to T2, and start the motor 7 at the same time, the motor 7 drives the spiral stirring blade 14 to rotate through the stirring shaft 12, and the spiral stirring blade 14 stirs the raw materials in the tank body 1. At this time, the motor 7 drives the pulley assembly 10, the second gear, and the first gear The stirring paddle 18 is driven to rotate in the opposite direction relative to the spiral stirring blade 14, so that the raw materials at the center and edge of the tank body 1 form convection, thereby making the raw materials in the tank body 1 evenly mixed. When the phenol and amines react completely, formaldehyde is added to the feed box 21. The speed of adding formaldehyde into the tank body 1 is controlled by the control module 23, so that the temperature in the tank body 1 is maintained within a certain range. Finally, a phenolic amine curing agent is generated under the stirring of the mixing kettle. When the reaction is complete, the solenoid valve 26 is opened to discharge the phenolic amine curing agent in the tank body 1 through the discharge pipe 3.

[0026] In the above-mentioned embodiments, the motor 7, the displacement pump 20, the temperature sensor 22, the control module 23, the electric heating belt 25, and the solenoid valve 26 are all connected to the power supply through cables.

[0027] The above embodiments can be combined with each other.

[0028] The above embodiments do not impose any formal restrictions on the shape, material, structure, etc. of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A phenolic amine curing agent mixing kettle, comprising a tank body, a support leg fixedly connected to the bottom of the tank body, a discharge pipe connected to the bottom of the tank body, a water inlet pipe connected to the top of the tank body, a feed pipe and an exhaust pipe connected to the top of the tank body, and a motor installed on the top of the tank body, characterized in that: The tank body is provided with a first stirring assembly for stirring the liquid in the tank body, the first stirring assembly is transmission-connected to the output end of the motor, a second stirring assembly is installed outside the first stirring assembly to rotate in the opposite direction to the first stirring assembly, and the second stirring assembly is transmission-connected to the motor through the transmission assembly; The first stirring assembly includes a stirring shaft arranged coaxially with the tank body, the stirring shaft is rotatably connected to the tank body, the top end of the stirring shaft is transmission-connected to the motor, and the outer side wall of the stirring shaft is sequentially installed with a first bearing, a spiral stirring blade, and a second bearing from top to bottom; The second stirring assembly includes a ring gear, a support ring, and several stirring paddles. The inner wall of the ring gear is fixedly connected to the outer wall of the first bearing through a support rod. The ring gear is transmission-connected to the transmission assembly. The inner wall of the support ring is fixedly connected to the outer wall of the second bearing through a support rod. The stirring paddles are evenly spaced along the circumference of the spiral stirring blade. The top of the stirring paddle is fixedly connected to the ring gear, the bottom of the stirring paddle is fixedly connected to the support ring, and the outer side of the stirring paddle abuts against the inner wall of the tank body.

2. A phenalkamine curing agent mixing kettle according to claim 1, characterized in that: The transmission assembly includes a transmission shaft, which is rotatably mounted on the top of the tank body. The transmission shaft is connected to the output end of the motor through a pulley assembly. The bottom end of the transmission shaft extends into the tank body and is fixedly mounted with a driving gear, which meshes with the ring gear.

3. A phenalkamine curing agent mixing kettle according to claim 1, characterized in that: A displacement pump is installed on the top of the tank body, a feed box is installed above the displacement pump, the bottom of the feed box is connected to the feed end of the displacement pump, and the discharge end of the displacement pump is connected to the feed pipe.

4. A phenalkamine curing agent mixing kettle according to claim 3, characterized in that: The feed box is made of transparent material, and scales are printed on the outside of the feed box.

5. A phenalkamine curing agent mixing kettle according to claim 1, characterized in that: An electric heating tape is laid on the outside of the tank body.

6. A phenalkamine curing agent mixing kettle according to claim 1, characterized in that: A solenoid valve is installed on the discharge pipe.

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