Polar molecule modified resin reactor

Abstract

This utility model discloses a polar molecular modified resin reactor, including a support leg, a reactor body, a reactor lid, a material inlet pipe, a discharge pipe, a one-way pressure relief valve, a stirring assembly, a fixing ring, a geared motor, a sealing gasket, and a nitrogen inlet pipe. The reactor body is installed on top of the support leg, the reactor lid is installed on top of the reactor body, both material inlet pipes are installed on the surface of the reactor lid, the discharge pipe is installed at the bottom of the reactor body, the one-way pressure relief valve is installed on the outer periphery of the reactor body, and the fixing ring is installed at the center of the surface of the reactor lid. This utility model can quickly reduce the material temperature and significantly increase the production speed of polar molecular modified resin. When nitrogen escapes from the shielding head, it can form bubbles in the raw materials. Combined with the rotating blades, it can accelerate the full mixing of the raw materials inside the reactor body, so that the raw materials put into the reactor body can fully react, thereby improving the production efficiency of polar molecular modified resin and further increasing the production speed.

Description

Technical Field

[0001] This utility model relates to the field of resin production technology, specifically to a polar molecular modified resin reactor. Background Technology

[0002] Polar molecule modified resins are materials whose properties are improved by introducing polar molecules to modify the resin. For example, they are prepared by using polar molecules such as polyethylene glycol and sodium bis(hydroxyethyl) isophthalate-5-sulfonate as raw materials, and then reacting them with diols, saturated diacids, unsaturated diacids, and antioxidants in a nitrogen atmosphere in a reaction vessel through a series of reaction steps. This modified resin can improve the water absorption rate of unsaturated polyester resins, can be mixed with polyester wastewater for reuse, reduces the harm of the product to human health, and contributes to its development in the adhesives industry.

[0003] An existing patent (publication number CN218609389U) discloses an epoxy resin modification reactor. By setting a rotating rod, a stirring rod, a heating chamber, and a heating wire, the internal epoxy resin can be heated and stirred, thereby improving the reaction rate of the epoxy resin and the stability of the product quality. Furthermore, by setting an L-shaped frame, a scraper, and an arc-shaped base, the inner wall of the outer shell can be cleaned, preventing the epoxy resin from sticking to the inner wall of the outer shell during the stirring process and making it difficult to clean.

[0004] The production process of polar molecularly modified resin involves multiple reaction stages, each with different temperature control requirements: the initial reaction stage requires strict temperature control at 160℃~170℃, the heating reaction stage requires raising the temperature to 200℃~205℃, and the vacuum reaction stage requires temperature control at 200℃~205℃. However, the subsequent addition and cooling stages involve several steps for temperature control: ① After the polar unsaturated polyester cools to 160℃~180℃, add polymerization inhibitor I and stir until homogeneous to obtain polyester a; ② After polyester a cools to between 120℃~140℃, add reactive diluent and polymerization inhibitor II sequentially and stir thoroughly to obtain resin b; ③ After resin b cools to below 100℃, add polyester wastewater, stir thoroughly, cool, and filter to obtain the polar molecularly modified unsaturated polyester resin.

[0005] When using this reactor to produce polar molecular modified resins, the material can be heated by heating wires from the initial reaction stage to the vacuum reaction stage. However, in the subsequent addition and cooling stages of the polar molecular modified resin, the temperature needs to be continuously reduced. This reactor does not have a cooling effect and requires natural cooling to wait for the temperature to drop, which takes a long time and results in a low production speed of polar molecular modified resin. Furthermore, in this stage, the esterification reaction will continue to release heat, and natural heat dissipation makes it even more difficult to control the material temperature, resulting in poor quality of the final polar molecular modified resin.

[0006] Therefore, a polar molecular modified resin reactor is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a polar molecular modified resin reactor to solve the problems mentioned in the background art, such as the slow production speed caused by the long time required for natural heat dissipation during the subsequent addition and cooling stages of the existing reactor for the production of polar molecular modified resin, and the difficulty in controlling the material temperature due to the continuous exothermic reaction during this stage, which adversely affects the production quality.

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A polar molecular modified resin reactor includes a support leg, a reactor body, a reactor lid, a material inlet pipe, a discharge pipe, a one-way pressure relief valve, a stirring assembly, a fixing ring, a geared motor, a sealing gasket, and a nitrogen inlet pipe. The reactor body is mounted on top of the support leg, the reactor lid is mounted on top of the reactor body, two material inlet pipes are mounted on the surface of the reactor lid, the discharge pipe is mounted at the bottom of the reactor body, the one-way pressure relief valve is mounted on the outer periphery of the reactor body, the fixing ring is mounted at the center of the surface of the reactor lid, the stirring assembly is disposed inside the reactor body and the top of the stirring assembly extends above the fixing ring, the geared motor is mounted on the surface of the reactor lid and is drively connected to the stirring assembly, the sealing gasket is attached to the outer periphery of the fixing ring, the nitrogen inlet pipe is attached to the side wall of the sealing gasket, and the fixing ring and the stirring assembly are rotatably connected via a sealed bearing.

[0010] Preferably, the stirring assembly includes a transmission end, a hollow shaft tube, positioning seats, mounting seats, blades, and shielding heads. The transmission end is drivenly connected to the output shaft of the geared motor. The hollow shaft tube is connected to the bottom of the transmission end and is rotatably connected to a fixed ring. Multiple positioning seats are equally spaced around the outer periphery of the hollow shaft tube. The mounting seats are fitted onto the outer periphery of the positioning seats. Multiple blades are arranged in a circular array around the outer periphery of the mounting seats. The shielding heads are equally spaced and installed on the rear side of the blades in the counterclockwise rotation direction around the hollow shaft tube.

[0011] Preferably, the hollow shaft tube has multiple air inlets on its outer periphery, and the air inlets are located inside the fixing ring.

[0012] Preferably, the positioning seat has connecting holes around its perimeter, the mounting seat has a cavity inside, and the cavity is connected to the interior of the hollow shaft tube through the connecting holes. The mounting seat has a connecting port on its outer perimeter, and the connecting port is located inside the part of the mounting seat that fits with the blade. The blade has a cylindrical cavity inside, and the blade sidewall has an air outlet that communicates with the cylindrical cavity.

[0013] Preferably, the shielding head includes a ring, a slide rod, a sealing cover, and a tension spring. The ring is sealed and installed on the side wall of the blade. One end of the tension spring is connected to the ring, and the other end of the tension spring is connected to the sealing cover. The slide rod is installed on the sealing cover, and the end of the slide rod is slidably connected to the inner wall of the ring.

[0014] Preferably, the one-way pressure relief valve is located on the side wall of the vessel body near the vessel lid.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In the subsequent addition and cooling stages of the production of polar molecular modified resin, this utility model connects the nitrogen inlet pipe to the nitrogen tank, allowing nitrogen to be introduced into the stirring assembly. The nitrogen then flows out evenly from the blades. When the nitrogen escapes from the raw material, it can quickly remove the heat from the raw material, thereby rapidly reducing the material temperature and significantly increasing the production speed of polar molecular modified resin. Furthermore, the change in material temperature can be precisely controlled by controlling the nitrogen introduction time, thus effectively ensuring the production quality of polar molecular modified resin.

[0017] 2. This utility model, through the set stirring component, allows for the installation of an air pump between the nitrogen inlet pipe and the one-way pressure relief valve to draw constant-temperature nitrogen gas for circulation before the subsequent addition and cooling stages of the polar molecular modified resin production. When the nitrogen gas escapes from the shielding head, it can form bubbles in the raw materials. Combined with the rotating blades, this can accelerate the full mixing of the raw materials inside the reactor, thereby enabling the raw materials added to the reactor to react fully, which is beneficial to improving the production efficiency and speed of the polar molecular modified resin. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the stirring assembly according to an embodiment of the present invention;

[0020] Figure 3 This is a partial structural schematic diagram of the hollow shaft tube according to an embodiment of the present utility model;

[0021] Figure 4 This is a cross-sectional view of the blade in an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the shielding head according to an embodiment of the present utility model.

[0023] In the diagram: 1. Support leg; 2. Vessel body; 3. Vessel lid; 4. Material inlet pipe; 5. Discharge pipe; 6. One-way pressure relief valve; 7. Stirring assembly; 71. Transmission end; 72. Hollow shaft tube; 721. Air inlet; 73. Positioning seat; 731. Connecting hole; 74. Mounting seat; 741. Connecting port; 76. Blade; 761. Cylindrical cavity; 762. Air outlet; 77. Baffle head; 771. Ring; 772. Slide rod; 773. Sealing cover; 774. Tension spring; 8. Fixing ring; 9. Gear motor; 10. Sealing gasket; 11. Nitrogen inlet pipe. Detailed Implementation

[0024] To facilitate the solution of the problem, this utility model provides a polar molecular modified resin reactor. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0025] Example

[0026] like Figures 1 to 5As shown, this embodiment provides a polar molecular modified resin reactor, including support legs 1, reactor body 2, reactor lid 3, material inlet pipe 4, discharge pipe 5, one-way pressure relief valve 6, stirring assembly 7, fixing ring 8, geared motor 9, sealing gasket 10, and nitrogen inlet pipe 11. The reactor body 2 is mounted on top of the support legs 1, and the number of support legs 1 is at least three. The reactor lid 3 is mounted on top of the reactor body 2, and the reactor lid 3 and the reactor body 2 are sealed together. The reactor lid 3 is connected to the reactor body 2 by multiple fastening bolts, effectively ensuring the reactor body... 2. Regarding the pressure-bearing effect during the reaction, both material inlet pipes 4 are installed on the surface of the vessel lid 3. The two material inlet pipes 4 are symmetrically arranged to distinguish the inlet of different types of raw materials, avoiding the pre-reaction of raw materials and the generation of other substances when multiple raw materials are used in the same material inlet pipe 4. The discharge pipe 5 is installed at the bottom of the vessel body 2, and a discharge valve is installed at the bottom of the discharge pipe 5. A one-way pressure relief valve 6 is installed on the outer periphery of the vessel body 2, allowing gas inside the vessel body 2 to flow only to the outside of the vessel body 2. The fixing ring 8 is installed at the center of the surface of the vessel lid 3, and the stirring group... The stirring assembly 7 is located inside the vessel body 2, and the top of the stirring assembly 7 extends above the fixing ring 8. The geared motor 9 is mounted on the surface of the vessel cover 3 and is connected to the stirring assembly 7. An L-shaped bracket is provided between the bottom of the geared motor 9 and the vessel cover 3 to stably support the geared motor 9. The geared motor 9 provides power input to the stirring assembly 7. The sealing gasket 10 is attached to the outer periphery of the fixing ring 8, and the nitrogen inlet pipe 11 is attached to the side wall of the sealing gasket 10. The fixing ring 8 and the stirring assembly 7 are rotatably connected by a sealed bearing. Nitrogen can be guided into the inner side of the fixing ring 8 through the nitrogen inlet pipe 11, and then the nitrogen enters the stirring assembly 7 from the inner side of the fixing ring 8. When the nitrogen pressure reaches a certain value, it can escape from the stirring assembly 7 and fully contact the raw materials. This not only makes the material contact and mixing more uniform, but also allows the nitrogen to quickly remove the heat from the material during the subsequent addition and cooling stages of polar molecular modified resin production, thereby rapidly reducing the material temperature. This not only increases the production speed of polar molecular modified resin, but also improves its production quality.

[0027] Reference Figure 2 and Figure 3In one embodiment of this utility model, the stirring assembly 7 specifically includes a transmission end 71, a hollow shaft tube 72, a positioning seat 73, a mounting seat 74, blades 76, and a baffle head 77. The transmission end 71 is connected to the output shaft of the geared motor 9. The hollow shaft tube 72 is connected to the bottom of the transmission end 71. The output shaft of the geared motor 9 drives the hollow shaft tube 72 to rotate through the transmission end 71. Since the hollow shaft tube 72 is hollow inside, it is made of high-strength aluminum alloy to ensure that it can withstand the torque input of the geared motor 9. The hollow shaft tube 72 is rotatably connected to the fixing ring 8. Multiple positioning seats 73 are evenly spaced around the outer periphery of the hollow shaft tube 72. Mounting seats 74 are fitted to the outer periphery of the positioning seats 73. Multiple blades 76 are mounted in a ring array around the outer periphery of the mounting seats 74. Baffle heads 77 are evenly spaced around the rear side of the blades 76 in the counterclockwise rotation direction of the hollow shaft tube 72. During normal use, the geared motor 9 drives the hollow shaft tube 72 to rotate counterclockwise. When the hollow shaft tube 72 rotates counterclockwise, regardless of whether nitrogen is introduced, the baffle heads 77 can remain in contact with the blades 76. When nitrogen is introduced, the nitrogen flows out from the rear side of the blades 76 in the rotation direction, preventing raw materials from entering the interior of the blades 76.

[0028] Reference Figure 3 As one embodiment of this utility model, specifically, the hollow shaft tube 72 has multiple air inlets 721 on its outer periphery, and the air inlets 721 are located inside the fixing ring 8. Nitrogen in the nitrogen inlet tube 11 enters the hollow shaft tube 72 through the air inlets 721.

[0029] Reference Figure 3 and Figure 4 As one embodiment of this utility model, specifically, the positioning seat 73 is provided with connecting holes 731 on all four sides, the mounting seat 74 is provided with a cavity inside, and the cavity is connected to the hollow shaft tube 72 through the connecting holes 731. The mounting seat 74 is provided with a connecting port 741 on the outer periphery, and the connecting port 741 is located inside the part of the mounting seat 74 that is in contact with the blade 76. The blade 76 is provided with a cylindrical cavity 761 inside, and the side wall of the blade 76 is provided with an air outlet 762 that communicates with the cylindrical cavity 761. With the arrangement of the connecting holes 731, the cavity, the connecting port 741, the cylindrical cavity 761 and the air outlet 762, the nitrogen gas entering the hollow shaft tube 72 can flow into the shielding head 77.

[0030] Reference Figure 5As one embodiment of this utility model, specifically, the shielding head 77 includes a ring 771, a slide rod 772, a sealing cover 773, and a tension spring 774. The ring 771 is sealed and installed on the side wall of the blade 76. One end of the tension spring 774 is connected to the ring 771, and the other end of the tension spring 774 is connected to the sealing cover 773. The slide rod 772 is installed on the sealing cover 773, and the end of the slide rod 772 is slidably connected to the inner wall of the ring 771. When nitrogen enters the interior of the ring 771, when the nitrogen pressure reaches a certain value, the sealing cover 773 can be opened, so that the end of the ring 771 is exposed, and then the nitrogen flows into the raw material from the end of the ring 771.

[0031] Reference Figure 1 As one embodiment of this utility model, specifically, the one-way pressure relief valve 6 is set on the side wall of the vessel body 2 near the vessel cover 3 to avoid affecting the discharge of nitrogen gas inside the vessel body 2 when a large amount of raw materials are added to the vessel body 2 at one time.

[0032] Working principle: During the subsequent addition and cooling stages of polar molecular modified resin production, the nitrogen inlet pipe 11 is connected to the nitrogen tank. The nitrogen inlet pipe 11 can guide nitrogen into the inner side of the fixed ring 8, and then the nitrogen enters the stirring assembly 7 from the inner side of the fixed ring 8. When the nitrogen pressure reaches a certain value, it can escape from the stirring assembly 7 and fully contact the raw materials. Then it is discharged from the one-way pressure relief valve 6. This not only makes the material contact and mixing more uniform, but also uses the flow of nitrogen to remove the heat in the material, thereby quickly reducing the material temperature and effectively improving the production speed and quality of polar molecular modified resin.

[0033] Specifically, the output shaft of the geared motor 9 drives the hollow shaft tube 72 to rotate via the transmission end 71. Nitrogen gas from the nitrogen tank is introduced into the fixed ring 8 through the nitrogen inlet pipe 11. Subsequently, the nitrogen gas enters the hollow shaft tube 72 through the air inlet 721, and then sequentially enters the circular ring 771 through the connecting hole 731, the chamber, the cylindrical cavity 761, and the air outlet 762. Under the action of nitrogen pressure, the nitrogen gas overcomes the tension spring 774, causing the sealing cover 773 to contact the end of the circular ring 771. Partial separation occurs when the slide bar 772 slides against the inner wall of the ring 771, the tension spring 774 is in a stretched state, and nitrogen gas escapes from the end of the ring 771. As the blade 76 rotates, the nitrogen gas comes into full contact with the raw material, and because the nitrogen gas has a lower density, it flows upward towards the raw material. During the contact process between the nitrogen gas and the raw material, heat exchange can occur between them to reduce the temperature of the raw material. Subsequently, the high-temperature nitrogen gas is discharged through the one-way pressure relief valve 6, thereby rapidly reducing the temperature of the raw material to the required range and improving the mixing and contact effect of the material.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A polar molecular modified resin reactor, characterized in that: The system includes a support leg (1), a vessel body (2), a vessel lid (3), a material inlet pipe (4), a discharge pipe (5), a one-way pressure relief valve (6), a stirring assembly (7), a retaining ring (8), a geared motor (9), a sealing gasket (10), and a nitrogen inlet pipe (11). The vessel body (2) is mounted on top of the support leg (1), the vessel lid (3) is mounted on top of the vessel body (2), both material inlet pipes (4) are mounted on the surface of the vessel lid (3), the discharge pipe (5) is mounted on the bottom of the vessel body (2), and the one-way pressure relief valve (6) is mounted on the vessel body (11). 2) On the outer periphery, the fixing ring (8) is installed at the center of the surface of the lid (3), the stirring assembly (7) is set inside the body (2), and the top of the stirring assembly (7) extends above the fixing ring (8), the reduction motor (9) is installed on the surface of the lid (3), and the reduction motor (9) is connected to the stirring assembly (7) in a transmission manner, the sealing gasket (10) is attached to the outer periphery of the fixing ring (8), the nitrogen inlet pipe (11) is attached to the side wall of the sealing gasket (10), and the fixing ring (8) and the stirring assembly (7) are rotatably connected through a sealing bearing.

2. The polar molecular modified resin reactor according to claim 1, characterized in that: The stirring assembly (7) includes a transmission end (71), a hollow shaft tube (72), a positioning seat (73), a mounting seat (74), blades (76), and a shielding head (77). The transmission end (71) is connected to the output shaft of the reduction motor (9). The hollow shaft tube (72) is connected to the bottom of the transmission end (71) and is rotatably connected to the fixing ring (8). Multiple positioning seats (73) are equally spaced around the outer periphery of the hollow shaft tube (72). The mounting seat (74) is fitted and installed around the outer periphery of the positioning seat (73). Multiple blades (76) are arranged in a ring array around the outer periphery of the mounting seat (74). The shielding head (77) is equally spaced around the blades (76) on the rear side of the blades (76) in the counterclockwise rotation direction around the hollow shaft tube (72).

3. The polar molecular modified resin reactor according to claim 2, characterized in that: The hollow shaft tube (72) has multiple air inlets (721) on its outer periphery, and the air inlets (721) are located inside the fixing ring (8).

4. The polar molecular modified resin reactor according to claim 2, characterized in that: The positioning seat (73) has a communication hole (731) around its perimeter. The mounting seat (74) has a cavity inside, and the cavity is connected to the hollow shaft tube (72) through the communication hole (731). The mounting seat (74) has a communication port (741) on its outer periphery, and the communication port (741) is located inside the part where the mounting seat (74) and the blade (76) are in contact. The blade (76) has a cylindrical cavity (761) inside, and the side wall of the blade (76) has an air outlet (762) that communicates with the cylindrical cavity (761).

5. The polar molecular modified resin reactor according to claim 3, characterized in that: The shielding head (77) includes a ring (771), a slide rod (772), a sealing cover (773), and a tension spring (774). The ring (771) is sealed and installed on the side wall of the blade (76). One end of the tension spring (774) is connected to the ring (771), and the other end of the tension spring (774) is connected to the sealing cover (773). The slide rod (772) is installed on the sealing cover (773), and the end of the slide rod (772) is slidably connected to the inner wall of the ring (771).

6. The polar molecular modified resin reactor according to claim 1, characterized in that: The one-way pressure relief valve (6) is located on the side wall of the vessel body (2) near the vessel cover (3).

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