Etherification reaction kettle capable of accurately controlling feeding

Abstract

The invention discloses an etherification reaction kettle capable of accurately controlling feeding, which comprises a vertically arranged support, and a reaction kettle is rotatably arranged in the support; the feeding pipe is arranged at the top of the reaction kettle, the feeding pipe is fixedly connected with the bracket, and the lower end of the feeding pipe rotatably penetrates into the reaction kettle; a plurality of feeding holes are formed in the side wall of the feeding pipe; the discharging pipe is arranged at the bottom of the reaction kettle; electromagnetic valves are arranged in each feeding hole and each discharging pipe and are used for controlling feeding and discharging of materials; a plurality of upper turntables are axially arranged in the reaction kettle, a through hole is formed in the center of each upper turntable, a lower turntable is rotationally arranged below each upper turntable, and a gap is kept between the side wall of each lower turntable and the inner wall of the reaction kettle; a rotating shaft is rotationally arranged at the central position in the reaction kettle, and the rotating shaft is fixedly connected with each lower rotating disc; according to the invention, the mixing degree of raw materials and the reaction uniformity are improved.

Description

Technical Field

[0001] The invention relates to the technical field of etherification reactors, in particular to an etherification reactor with precise feed control. Background Art

[0002] As an important textile finishing agent, 2D resin has significant advantages in giving fabrics anti-wrinkle, non-ironing and other properties. However, with the increasing requirements of the textile market for product performance, the existing 2D resin has been difficult to meet the demand in some aspects. In order to improve the performance of 2D resin, especially its anti-yellowing ability, researchers began to explore the etherification reaction modification of 2D resin. Etherification reaction is an effective chemical modification method. By introducing ether bonds, the molecular structure and properties of the resin can be changed. For 2D resin, etherification reaction can significantly improve its heat resistance, weather resistance and anti-yellowing ability, thereby extending the service life of textiles and maintaining their bright color. In addition, etherification reaction can also improve the processing performance and bonding strength of 2D resin with fibers, making it easier to use in the textile finishing process.

[0003] At present, the etherification reaction modification of 2D resin mainly relies on the reactor. Existing reactors usually use a stirrer to mix and react the reaction materials. However, since the 2D resin itself has a high viscosity, it is easy to produce sticking on the container wall of the reactor. This will not only lead to waste of reaction materials, but also affect the heat transfer efficiency and mixing effect of the reactor, thereby affecting the etherification reaction and the quality of the modified 2D resin. Secondly, the existing reactor only mixes the reaction materials through a stirrer. Due to the viscosity and high viscosity characteristics of the 2D resin, it is difficult to achieve sufficient mixing and uniform distribution of the materials in the reactor only through a stirrer. This will cause the reaction materials to have a local concentration that is too high or too low during the reaction process, thereby affecting the uniformity of the etherification reaction and the performance of the modified 2D resin. These problems limit the widespread application and industrial development of 2D resin etherification reaction modification technology.

[0004] Therefore, it is necessary to provide an etherification reactor with precise feed control to solve the problems raised in the above background technology. Summary of the invention

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An etherification reactor with precise feed control, comprising:

[0007] A vertically arranged support, in which a reaction kettle is rotatably arranged;

[0008] A feed pipe is arranged at the top of the reactor, the feed pipe is fixedly connected to the bracket, and the lower end of the feed pipe can be rotatably penetrated into the interior of the reactor;

[0009] A plurality of feed ports are arranged on the side wall of the feed pipe;

[0010] A discharge pipe is arranged at the bottom of the reaction kettle;

[0011] Each of the feed port and discharge pipe is equipped with a solenoid valve for controlling the inlet and outlet of materials;

[0012] Inside the reactor, a plurality of upper turntables are arranged along the axial direction, each of which has a through hole at its center, and a lower turntable is rotatably arranged under each of the upper turntables, with a gap maintained between the side wall of the lower turntable and the inner wall of the reactor;

[0013] A rotating shaft is rotatably arranged at the center position of the reactor, and the rotating shaft is fixedly connected to each of the lower rotating disks so as to drive all the lower rotating disks to rotate synchronously through rotation.

[0014] Furthermore, the inner wall of the reactor is provided with a heating device for adjusting the temperature inside the reactor.

[0015] Furthermore, a transmission screw is rotatably arranged in the feed pipe, and a screw motor connected to the transmission screw is arranged at the top of the feed pipe.

[0016] Furthermore, the lower end of the transmission screw is fixed to the rotating shaft.

[0017] Furthermore, a funnel-shaped collecting hopper is arranged below each of the lower turntables, the collecting hopper is fixed in the reaction kettle, and the outlet of each of the collecting hoppers penetrates into the upper turntable of the next layer.

[0018] Furthermore, a spiral blade is provided in the outlet of the collecting bucket, and the spiral blade is fixedly connected to the rotating shaft.

[0019] Furthermore, a plurality of circles of upper gear blocks are fixed on the lower surface of the upper turntable, a plurality of circles of lower gear blocks are fixed on the upper surface of the lower turntable, and the upper gear blocks are staggered with the lower gear blocks.

[0020] Furthermore, an upper gear ring is fixed below the upper turntable, a lower gear ring is fixed to the outer wall of the lower turntable, and a plurality of bevel gears are distributed on the inner wall of the reactor, and the bevel gears are meshed with the corresponding upper gear ring and lower gear ring.

[0021] Furthermore, a plurality of stirring rods are fixedly connected to the rotating shaft at the lower part of the reactor.

[0022] Furthermore, the lower end of the bracket is hinged to the base, and a hydraulic cylinder is hinged between the bracket and the base;

[0023] A gear ring is fixed on the outer wall of the reactor, and a driving motor for driving the gear ring is arranged in the bracket.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The invention can accurately control the time and amount of raw materials in and out by means of multiple feed ports arranged on the side wall of the feed pipe and equipped with electromagnetic valves, ensuring that the supply of raw materials during the reaction process is stable and meets the preset ratio. The multi-layer upper and lower turntable structures designed inside the reactor, as well as the spiral blades and collecting buckets matched therewith, enable the raw materials to be centrifuged and guided multiple times in the reactor to achieve uniform mixing.

[0026] In the present invention, the upper tooth blocks and the lower tooth blocks on the upper turntable and the lower turntable shear the raw materials during the relative rotation process, further improving the degree of mixing, which not only helps the reaction to proceed fully, but also improves the purity and quality of the product. When the lower turntable is driven to rotate by the rotating shaft, the upper turntable will rotate in the opposite direction due to the transmission of the bevel gear, which greatly improves the relative rotation speed of the lower turntable and the upper turntable, and the shear speed between the upper tooth blocks and the lower tooth blocks will be faster, thereby more effectively shearing and dispersing the raw materials, which not only further improves the degree of mixing of the raw materials and ensures the uniformity of the reaction, but also helps to break up the agglomerates in the raw materials so that they can participate more fully in the reaction.

[0027] After all the raw materials fall into the lower part of the reactor, the present invention rotates the reactor to a horizontal state through a hydraulic cylinder, and drives the reactor to rotate through a driving motor, so that the raw materials can be turned over in the reactor, which further improves the mixing degree of the raw materials and the uniformity of the reaction. In the horizontal state, the raw materials are turned upside down by gravity, and the stirring action of the stirring rod is combined to form a more complex flow pattern in the reactor, which helps to break up the agglomerates in the raw materials and make them more fully dispersed in the reaction medium, thereby improving the reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an etherification reactor with precise feed control;

[0029] Figure 2 It is a schematic diagram of the structure inside the reactor of the present invention;

[0030] FIG3 is a schematic diagram of the three-dimensional structure of the upper turntable and the lower turntable in the present invention;

[0031] FIG4 is a cross-sectional schematic diagram of the upper turntable and the lower turntable in the present invention;

[0032] In the figure: 1. bracket; 2. reactor; 21. upper turntable; 22. lower turntable; 23. collecting bucket; 24. upper gear ring; 25. lower gear ring; 26. bevel gear; 27. rotating shaft; 28. upper gear block; 29. ​​lower gear block; 210. spiral blade; 211. stirring rod; 3. feed pipe; 31. feed port; 32. transmission screw; 33. screw motor; 4. discharge pipe; 5. gear ring; 6. drive motor; 7. base; 8. hydraulic cylinder. DETAILED DESCRIPTION

[0033] See also Figure 1 - Figure 4, in an embodiment of the present invention, an etherification reactor with precise feed control, comprising:

[0034] A vertically arranged support 1, in which a reaction kettle 2 is rotatably arranged;

[0035] A feed pipe 3 is disposed on the top of the reactor 2, the feed pipe 3 is fixedly connected to the bracket 1, and the lower end of the feed pipe 3 is rotatably inserted into the interior of the reactor 2;

[0036] A plurality of feed ports 31 are provided on the side wall of the feed pipe 3;

[0037] A discharge pipe 4 is arranged at the bottom of the reaction kettle 2;

[0038] Each of the feed port 31 and the discharge pipe 4 is equipped with a solenoid valve for controlling the inlet and outlet of materials;

[0039] Inside the reactor 2, a plurality of upper turntables 21 are arranged along the axial direction, each of the upper turntables 21 has a through hole at its center, and a lower turntable 22 is rotatably arranged below each of the upper turntables 21, and a gap is maintained between the side wall of the lower turntable 22 and the inner wall of the reactor 2;

[0040] A rotating shaft 27 is rotatably disposed at the center of the reactor 2 , and the rotating shaft 27 is fixedly connected to each of the lower rotating disks 22 so as to drive all the lower rotating disks 22 to rotate synchronously through rotation.

[0041] When the raw materials such as 2D resin, polyol, catalyst, etc. for etherification reaction enter the reactor 2 through the feed port 31, the raw materials first pass through the through hole in the center of the upper turntable 21 at the top and fall into the corresponding lower turntable 22; as the rotating shaft 27 rotates, the lower turntable 22 is driven to rotate, and the raw materials are thrown out from the edge of the lower turntable 22 under the centrifugal effect and fall to the upper turntable 21 of the next layer, and then pass through the through hole in the center of the upper turntable 21 of this layer and fall into the lower turntable 22 of this layer again; the raw materials are sequentially centrifuged by the lower turntables 22 of multiple layers to achieve uniform mixing of the raw materials, so as to promote the full progress of the etherification reaction;

[0042] The solenoid valve can accurately control the opening and closing time of each feed port 31 and discharge pipe 4 , as well as the opening degree, so as to achieve precise control of the inflow and outflow of materials in the reactor 2 .

[0043] In this embodiment, a heating device is provided on the inner wall of the reaction kettle 2 to adjust the temperature inside the reaction kettle 2 .

[0044] In this embodiment, a transmission screw 32 is rotatably provided in the feed pipe 3, and a screw motor 33 connected to the transmission screw 32 is provided at the top of the feed pipe 3. By driving the transmission screw 32 to rotate, it is ensured that the raw materials in the feed pipe 3 can completely fall into the reactor 2, and it is prevented that the raw materials with high viscosity adhere to the inner wall of the feed pipe 3 and cause uneven proportioning.

[0045] In this embodiment, the lower end of the transmission screw 32 is fixed to the rotating shaft 27. Thus, when the transmission screw 32 rotates, it can drive the rotating shaft 27 and each lower turntable 22 to rotate.

[0046] In this embodiment, a funnel-shaped collecting hopper 23 is provided below each lower turntable 22, and the collecting hopper 23 is fixed in the reactor 2, and the outlet of each collecting hopper 23 penetrates into the upper turntable 21 of the next layer. In other words, the raw materials thrown out from the edge of the lower turntable 22 will flow into the collecting hopper 23, thereby ensuring that the raw materials can smoothly fall into the lower turntable 22 of the next layer.

[0047] In this embodiment, a spiral blade 210 is disposed in the outlet of the collecting hopper 23, and the spiral blade 210 is fixedly connected to the rotating shaft 27. The spiral blade 210 can rotate with the rotating shaft 27, thereby ensuring that the raw materials can fall smoothly from the outlet of the collecting hopper 23.

[0048] In this embodiment, multiple circles of upper tooth blocks 28 are fixed on the lower surface of the upper turntable 21, and multiple circles of lower tooth blocks 29 are fixed on the upper surface of the lower turntable 22, and the upper tooth blocks 28 are staggered from the lower tooth blocks 29. When the lower turntable 22 rotates, the raw materials move toward the edge of the lower turntable 22 under the action of centrifugation, and are sheared by the staggered engagement of the upper tooth blocks 28 and the lower tooth blocks 29, so that the raw materials can be dispersed more evenly, thereby improving the mixing degree of various raw materials.

[0049] In this embodiment, an upper gear ring 24 is fixed below the upper turntable 21, a lower gear ring 25 is fixed on the outer wall of the lower turntable 22, and multiple bevel gears 26 are distributed on the inner wall of the reactor 2, and the bevel gears 26 are meshed with the corresponding upper gear ring 24 and lower gear ring 25. In other words, when the lower turntable 22 rotates, it will drive the upper turntable 21 to rotate in the opposite direction, thereby increasing the relative speed of the lower turntable 22 and the upper turntable 21, making the shearing speed of the upper gear block 28 and the lower gear block 29 faster, and further improving the mixing degree of the raw materials.

[0050] In this embodiment, a plurality of stirring rods 211 are fixedly connected to the rotating shaft 27 at the lower part of the reactor 2. When the rotating shaft 27 rotates, the stirring rods 211 can stir the material at the lower part of the reactor 2.

[0051] In this embodiment, the lower end of the bracket 1 is hinged to the base 7, and a hydraulic cylinder 8 is also hinged between the bracket 1 and the base 7;

[0052] A gear ring 5 is fixed to the outer wall of the reactor 2 , and a driving motor 6 for driving the gear ring 5 is arranged in the bracket 1 .

[0053] That is to say, the support 1 and the reactor 2 can be rotated to a horizontal or vertical state through the extension and retraction of the hydraulic cylinder 8. When all the raw materials fall into the lower part of the reactor 2, the reactor 2 is rotated to a horizontal state through the hydraulic cylinder 8, and the reactor 2 can be driven to rotate by the driving motor 6, so that the raw materials can be turned over in the reactor 2, further improving the mixing degree of the raw materials.

[0054] In specific implementation, by controlling the solenoid valve, an appropriate feed port 31 is selected to open, and raw materials such as 2D resin, polyol, catalyst, etc. are fed into the feed pipe 3 in sequence or simultaneously; the screw motor 33 is started to drive the transmission screw 32 to rotate, and the raw materials are fed from the feed pipe 3 into the reactor 2; the rotation of the transmission screw 32 ensures that the raw materials fall completely into the reactor 2 to avoid adhesion to the inner wall and uneven proportioning; the raw materials first pass through the through hole in the center of the upper turntable 21 and fall into the corresponding lower turntable 22; as the rotating shaft 27 rotates, the lower turntable 22 is driven to rotate, and the raw materials The material is thrown out from the edge of the lower turntable 22 under the action of centrifugation, falls into the funnel-shaped collecting bucket 23, and then falls into the upper turntable 21 of the next layer under the guidance of the spiral blade 210. The raw materials fall one by one to achieve uniform mixing of the raw materials; at the same time, the upper gear block 28 and the lower gear block 29 on the upper turntable 21 and the lower turntable 22 shear the raw materials during the relative rotation process to further improve the degree of mixing. In addition, through the meshing of the bevel gear 26 with the upper gear ring 24 and the lower gear ring 25, the upper turntable 21 and the lower turntable 22 rotate in different directions to increase the shearing speed.

[0055] When all the raw materials fall into the lower part of the reactor 2, the reactor 2 is rotated to a horizontal state by the hydraulic cylinder 8, and the reactor 2 can be driven to rotate by the driving motor 6, so that the raw materials can be turned in the reactor 2, further improving the mixing degree of the raw materials.

[0056] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An etherification reactor with precise feed control, characterized in that: include: A vertically arranged support (1), wherein a reaction kettle (2) is rotatably arranged in the support (1); A feed pipe (3) is arranged at the top of the reaction kettle (2), the feed pipe (3) is fixedly connected to the bracket (1), and the lower end of the feed pipe (3) is rotatably inserted into the interior of the reaction kettle (2); A plurality of feed openings (31) are provided on the side wall of the feed pipe (3); A discharge pipe (4) is arranged at the bottom of the reaction kettle (2); Each of the feed port (31) and the discharge pipe (4) is equipped with a solenoid valve for controlling the inflow and outflow of materials; Inside the reaction kettle (2), a plurality of upper turntables (21) are arranged along the axial direction, each of the upper turntables (21) is provided with a through hole at the center, and a lower turntable (22) is rotatably arranged below each of the upper turntables (21), and a gap is maintained between the side wall of the lower turntable (22) and the inner wall of the reaction kettle (2); A rotating shaft (27) is rotatably disposed at the center of the reaction kettle (2), and the rotating shaft (27) is fixedly connected to each of the lower rotating disks (22) so as to drive all the lower rotating disks (22) to rotate synchronously through rotation.

2. The etherification reactor with precise feed control according to claim 1, characterized in that: The inner wall of the reaction kettle (2) is provided with a heating device for adjusting the temperature inside the reaction kettle (2).

3. The etherification reactor with precise feed control according to claim 1, characterized in that: A transmission screw (32) is rotatably arranged inside the feed pipe (3), and a screw motor (33) connected to the transmission screw (32) is arranged at the top of the feed pipe (3).

4. The etherification reactor with precise feed control according to claim 3, characterized in that: The lower end of the transmission screw (32) is fixed to the rotating shaft (27).

5. The etherification reactor with precise feed control according to claim 1, characterized in that: A funnel-shaped collecting hopper (23) is provided below each lower rotating disk (22). The collecting hopper (23) is fixed in the reaction kettle (2), and the outlet of each collecting hopper (23) penetrates into the upper rotating disk (21) of the next layer.

6. The etherification reactor with precise feed control according to claim 5, characterized in that: A spiral blade (210) is provided in the outlet of the collecting hopper (23), and the spiral blade (210) is fixedly connected to the rotating shaft (27).

7. The etherification reactor with precise feed control according to claim 1, characterized in that: A plurality of circles of upper tooth blocks (28) are fixed on the lower surface of the upper rotating disk (21), and a plurality of circles of lower tooth blocks (29) are fixed on the upper surface of the lower rotating disk (22), and the upper tooth blocks (28) and the lower tooth blocks (29) are staggered.

8. The etherification reactor with precise feed control according to claim 1, characterized in that: An upper gear ring (24) is fixed below the upper turntable (21), a lower gear ring (25) is fixed to the outer wall of the lower turntable (22), and a plurality of bevel gears (26) are distributed on the inner wall of the reaction kettle (2), the bevel gears (26) meshing with the corresponding upper gear ring (24) and lower gear ring (25).

9. The etherification reactor with precise feed control according to claim 1, characterized in that: A plurality of stirring rods (211) are fixedly connected to the rotating shaft (27) at the lower part of the reaction kettle (2).

10. The etherification reactor with precise feed control according to claim 1, characterized in that: The lower end of the bracket (1) is hinged to the base (7), and a hydraulic cylinder (8) is also hinged between the bracket (1) and the base (7); A gear ring (5) is fixed to the outer wall of the reaction kettle (2), and a driving motor (6) for driving the gear ring (5) is arranged in the bracket (1).

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