Stirring device for UPR resin production

Abstract

The invention provides a stirring device for UPR resin production, and relates to the technical field of resin mixing and stirring, the stirring device comprises a rotating rod rotatably connected in a reaction kettle, the rotating rod is fixedly connected with a connecting sleeve, the connecting sleeve is internally and fixedly connected with a heat exchange pipe for controlling temperature, the connecting sleeve is fixedly connected with a connecting block, and the connecting block is fixedly connected with the rotating rod. A pressure groove is formed in the connecting block, a connecting plate is slidably connected into the pressure groove, a connecting pipe is fixedly connected to the rotating rod, a control pipe is arranged in the rotating rod, a control block is slidably connected into the rotating rod, and the control block can control communication of the control pipe and external air. The mixing efficiency of the resin in the reaction kettle can be controlled by detecting the temperature in the reaction kettle.

Description

Technical Field

[0001] The present application relates to the technical field of resin mixing and stirring, and in particular to a stirring device for UPR resin production. Background Art

[0002] When manufacturing UPR resin, it is necessary to first mix a saturated dibasic acid and a saturated diol in a certain proportion, heat the mixture, and add an unsaturated dibasic acid to the mixture during the heating process to make the mixture undergo an esterification reaction. After the esterification reaction, a certain proportion of styrene or other ethylene needs to be added to the prepolymer as an active diluent to ensure the activity of the resin.

[0003] When the above reaction is carried out, different materials need to be added into the reactor for reaction. During the dilution reaction, an initiator needs to be added to control the reaction rate between styrene and the prepolymer. The initiator needs to control the temperature during use. The reaction is slow at 25°C-40°C and fast at 60°C-80°C, but it is easy to cause side reactions or premature coagulation and esterification of the resin. The temperature needs to be controlled in the range of 40°C-60°C by using a reactor. At this temperature, the viscosity of the resin is optimal and it is easy to mix, and the reaction rate is controllable.

[0004] Referring to the Chinese patent document with publication number CN108636565A, entitled A screw-type resin feeding and stirring device, the device increases the heating area of ​​the resin, accelerates the melting speed of the resin, reduces energy consumption, and heats the discharge pipe to avoid solidification of the resin during discharge.

[0005] According to the above technical scheme, when adding the initiator to the UPR resin, the temperature inside the reactor needs to be detected to prevent the reaction between the prepolymer and styrene from being too fast or too slow. Since the reaction between the prepolymer and styrene needs to release heat, the heating of the reaction tank needs to be stopped in the middle of the reaction to prevent the temperature in the reactor from being too high. This process requires the staff to detect the temperature in the reactor to prevent the efficiency of the UPR resin from being affected by too high or too low temperature. In addition, since the temperature needs to be controlled within a certain range, the temperature in the reactor needs to be adjusted to reduce the impact of too high or too low temperature on the production efficiency of the UPR resin. Summary of the invention

[0006] In view of this, the present application provides a stirring device for UPR resin production, which aims to solve the problem of accurately detecting the temperature in the reactor to keep the temperature in the reactor within a certain range.

[0007] The present application provides a stirring device for UPR resin production, which adopts the following technical solution, including a reactor; a rotating rod is rotatably connected in the reactor, a connecting sleeve is fixedly connected to the rotating rod, a heat exchange tube for controlling temperature is fixedly connected in the connecting sleeve, a connecting block is fixedly connected to the connecting sleeve, a pressure groove is provided on the connecting block, a connecting plate is slidably connected in the pressure groove, a connecting tube is fixedly connected to the rotating rod, a control tube is provided inside the rotating rod, a control block is slidably connected inside the rotating rod, and the control block can control the connection between the heat exchange tube and external air.

[0008] The mixture is added into the reactor, and the connecting sleeve and the connecting block are driven to rotate by the rotating rod. Heat is released during the reaction of the mixture. When the temperature of the mixture reaches a certain level, two cavities are formed in the pressure tank due to the setting of the connecting plate. In the cavity close to the mixture, the external temperature rises to a certain level, causing the gas in the cavity to collide with heat. Due to the push of the gas, the connecting plate moves toward the cavity away from the mixture. When the gas in the cavity away from the mixture is pushed, the gas moves to the control tube and pushes the control block to move, so that the heat exchange tube is connected to the gas with a lower external temperature, so that the temperature of the heat exchange tube is reduced. As the temperature of the heat exchange tube is reduced, the temperature of the connecting sleeve is reduced, thereby reducing the temperature of the mixture.

[0009] Since the resin is sensitive to temperature, the temperature inside the reactor needs to be precisely controlled during the resin dilution reaction. By controlling the temperature, the temperature in the reactor can be maintained in a fixed range to a certain extent, so that the mixture can react in the optimal reaction range, thereby increasing the resin production efficiency.

[0010] Optionally, a connecting disk is fixedly connected to the rotating rod, and the interior of the connecting disk is configured to be hollow. The connecting disk is connected to the connecting pipe, and one end of the connecting pipe away from the connecting disk is connected to one end of the pressure groove, and a connecting groove is provided inside the rotating rod, and the connecting groove connects the bottom of the control rod and the interior of the connecting disk.

[0011] By detecting the temperature in all directions of the reactor, the temperature in the reactor can be adjusted in real time to keep the temperature in the reactor stable, reduce the occurrence of excessive temperature inside the reactor, and to a certain extent improve the uniformity and stability of the resin and improve product quality.

[0012] Optionally, an adjusting bolt is fixedly connected to the connecting block, an adjusting spring is fixedly connected to the adjusting bolt, one end of the adjusting spring away from the adjusting bolt is fixedly connected to the connecting plate, and the compression strength of the adjusting spring can be adjusted by rotating the adjusting bolt.

[0013] By adjusting the reset amount of the adjusting spring, the sensitivity of the connecting plate to the temperature change can be controlled, so that the sensitivity of the detection inside the reactor can be controlled according to actual requirements.

[0014] Optionally, a fixed plate is fixedly connected in the reactor, a cleaning scraper is fixedly connected to the fixed plate, the cleaning scraper is sleeved on the outer side wall of the connecting sleeve, and the cleaning scraper is used to clean the resin attached to the outer side of the connecting sleeve.

[0015] By cleaning the resin, the influence of the externally attached resin on the internal temperature detection of the connection block can be reduced, and the accuracy of the temperature detection can be enhanced.

[0016] Optionally, a stirring plate is fixedly connected to the rotating rod, and the stirring plate is arranged at an angle. The stirring plate can drive the resin to move and move the resin located on the outside toward the inside of the reactor.

[0017] Optionally, a rotating motor is fixedly connected to the reactor, an output shaft of the rotating motor is fixedly connected to the rotating rod, and the rotating motor is used to drive the rotating rod to rotate.

[0018] Optionally, a connecting ring is fixedly connected to the rotating rod, a connecting ring has a connecting cavity inside, and a connecting port is opened on the control block. When the control block moves upward, the connecting cavity and the connecting port are connected, and the connecting port is connected to the control tube.

[0019] Optionally, a return spring is fixedly connected to the control block, and the return spring is used to push the control block to move toward a side close to the control tube.

[0020] Optionally, the reactor is provided with a feed inlet for pouring materials and a discharge port for discharging materials.

[0021] Optionally, a heating chamber is provided on the side wall of the reactor, and the heating chamber is used to transfer heat to the interior of the reactor.

[0022] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. Since the resin is sensitive to temperature, the temperature inside the reactor needs to be precisely controlled during the resin dilution reaction. By controlling the temperature, the temperature in the reactor can be kept in a fixed range to a certain extent, so that the mixture can react in the optimal reaction range and the resin production efficiency can be increased.

[0023] 2. By detecting the temperature in all directions of the reactor, the temperature in the reactor can be adjusted in real time to keep the temperature in the reactor stable, reduce the occurrence of excessive temperature inside the reactor, and to a certain extent improve the uniformity and stability of the resin and improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of a stirring device for UPR resin production in this embodiment; Figure 2 This is a schematic diagram of the structure inside the reactor of this embodiment; Figure 3 Schematic diagram of the structure of the rotating rod of this embodiment; Figure 4 This is a schematic diagram of the structure inside the rotating rod of this embodiment; Figure 5 Schematic diagram of the structure of the connecting ring of this embodiment; Figure 6 For this embodiment Figure 4 A partial enlarged view of the middle area A; Figure 7 This is a schematic diagram of the structure of the fixed plate and the cleaning scraper of this embodiment; Figure 8 Schematic diagram of the structure of the control block of this embodiment.

[0025] Explanation of the reference numerals: 1. Reactor; 2. Rotating rod; 21. Connecting sleeve; 22. Heat exchange tube; 23. Connecting block; 24. Pressure tank; 25. Connecting plate; 26. Connecting tube; 27. Control tube; 28. Control block; 3. Connecting plate; 31. Connecting groove; 4. Adjusting bolt; 41. Adjusting spring; 5. Fixing plate; 51. Cleaning scraper; 6. Stirring plate; 61. Rotating motor; 7. Connecting ring; 71. Connecting chamber; 72. Connecting port; 73. Reset spring; 8. Feed inlet; 81. Discharge port; 9. Heating chamber. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 8 , the technical solutions of the embodiments of the present application are clearly and completely described. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0027] like Figure 1As shown, this embodiment provides a stirring device for UPR resin production, including a reactor 1, a rotating mechanism, a detection mechanism, a control mechanism and a cleaning mechanism. The reactor 1 is placed on a horizontal plane. The reactor 1 is provided with a feed port 8 for pouring materials and a discharge port 81 for discharging materials. The rotating mechanism is used to drive the resin in the reactor 1 to rotate and mix. The detection mechanism is used to detect the temperature of the resin in the reactor 1. The control mechanism is used to control the temperature inside the reactor 1. The cleaning mechanism is used to clean the resin that may remain at the control mechanism.

[0028] like Figure 1 and Figure 3 As shown, the rotating mechanism includes a rotating motor 61, a rotating rod 2, a connecting sleeve 21 and a connecting block 23. The rotating motor 61 is fixedly connected to the reactor 1 and is arranged outside the reactor 1. The rotating rod 2 is rotatably connected to the reactor 1, and the rotating rod 2 and the output shaft of the rotating motor 61 are fixedly connected. The connecting sleeve 21 is fixedly connected to a side of the rotating rod 2 away from the rotating motor 61, and the connecting sleeve 21 is arranged at an internal position of the reactor 1. The connecting block 23 is fixedly connected to the rotating rod 2, and the connecting block 23 is hollow.

[0029] When the rotating rod 2 needs to be driven to rotate, the rotating motor 61 is started, so that the rotating motor 61 drives the rotating rod 2 to rotate, and the rotation of the rotating rod 2 drives the connecting sleeve 21 and the connecting block 23 to rotate in the resin mixture.

[0030] like Figure 4 , Figure 5 and Figure 6 As shown, the detection mechanism includes a pressure groove 24, a connecting plate 25, a connecting pipe 26, a connecting disk 3 and a connecting groove 31. The pressure groove 24 is opened on the connecting block 23, the connecting plate 25 is slidably connected in the pressure groove 24, the connecting pipe 26 is fixedly connected to the rotating rod 2, and the connecting pipe 26 is connected to one end of the pressure groove 24 close to the axis, the connecting disk 3 is fixedly connected to the rotating rod 2, the interior of the connecting disk 3 is set to be hollow, the connecting disk 3 and the connecting pipe 26 are connected, and the connecting groove 31 is connected to the interior of the rotating rod 2 and the interior of the connecting disk 3.

[0031] When the rotating rod 2 rotates, the connecting block 23 is driven to rotate. When the connecting block 23 rotates, the resin outside the connecting block 23 contacts the connecting block 23. When the temperature outside the connecting block 23 is too high, the internal pressure of the chamber of the connecting plate 25 close to the resin side increases, causing the gas in the chamber to expand. The expansion of the gas in the chamber pushes the connecting plate 25 toward the side close to the axis of the rotating rod 2, increasing the pressure in the connecting pipe 26, and the gas moves toward the connecting groove 31 through the connecting plate 3.

[0032] like Figure 4 , Figure 5 and Figure 8 As shown, the control mechanism includes a heat exchange tube 22, a control tube 27, a control block 28, a connecting ring 7, a connecting cavity 71 and a connecting port 72. The heat exchange tube 22 is fixedly connected in the connecting sleeve 21. The heat exchange tube 22 is used to control the temperature of the outer wall of the connecting sleeve 21. The control tube 27 is opened inside the rotating rod 2. The control block 28 is slidably connected in the rotating rod 2 and is arranged at the upper position of the control tube 27. The connecting ring 7 is fixedly connected to the rotating rod 2. The connecting cavity 71 is opened inside the connecting ring 7. The connecting port 72 is opened on the control block 28. When the control block 28 moves up, the connecting cavity 71 and the connecting port 72 are connected, and the connecting port 72 is connected to the control tube 27.

[0033] When the pressure in the connecting groove 31 increases, the pressure in the connecting groove 31 moves toward the control tube 27, so that the pressure in the control tube 27 increases. As the pressure in the control tube 27 increases, the control block 28 is pushed to move toward the side away from the control tube 27. When the control block 28 moves, the connecting port 72 on the control block 28 is connected to the connecting cavity 71. At this time, a gas with a lower temperature is introduced into the connecting ring 7, so that the gas is introduced into the heat exchange tube 22. Since the temperature in the heat exchange tube 22 is relatively low at this time, the resin with a higher temperature in the reactor 1 contacts the connecting sleeve 21 for heat exchange, so as to reduce the temperature of the resin.

[0034] like Figure 6 As shown, the control mechanism includes an adjusting bolt 4 and an adjusting spring 41. The adjusting bolt 4 is rotatably connected to the connecting block 23, and the adjusting spring 41 is fixedly connected to the adjusting bolt 4. One end of the adjusting spring 41 away from the adjusting bolt 4 is fixedly connected to the connecting plate 25. The compression strength of the adjusting spring 41 can be adjusted by rotating the adjusting bolt 4.

[0035] When the reset degree of the adjusting spring 41 needs to be adjusted, the adjusting bolt 4 is rotated to rotate the adjusting bolt 4, thereby driving the adjusting spring 41 to move toward the side away from the connecting plate 25, so that the reset strength of the adjusting spring 41 is weakened.

[0036] like Figure 7 As shown, the cleaning mechanism includes a fixed plate 5 and a cleaning scraper 51. The fixed plate 5 is fixedly connected in the reactor 1. The cleaning scraper 51 is fixedly connected to the fixed plate 5. The cleaning scraper 51 is sleeved on the outer wall of the connecting sleeve 21. The cleaning scraper 51 is used to clean the resin attached to the outer side of the connecting sleeve 21.

[0037] During the rotation of the connecting sleeve 21 , the cleaning strip 51 located on the fixed plate 5 scrapes the outer wall of the connecting sleeve 21 , thereby reducing the probability of the resin with a lower temperature adhering to the outer wall of the connecting sleeve 21 .

[0038] like Figure 2As shown, a stirring plate 6 is fixedly connected to the rotating rod 2 . The stirring plate 6 is tilted and can drive the resin to move, and move the resin located on the outside toward the inside of the reactor 1 .

[0039] When the rotating rod 2 rotates, since the connecting sleeve 21 and the rotating rod 2 are fixedly connected, the connecting sleeve 21 rotates synchronously with the rotating rod 2, and the stirring plate 6 rotates synchronously with the rotating rod 2. Due to the inclined setting of the stirring plate 6, the mixture far away from the connecting sleeve 21 moves toward the connecting sleeve 21 under the drive of the stirring plate 6, so that the heat exchange tube 22 inside the connecting sleeve 21 cools the mixture.

[0040] like Figure 4 As shown, a return spring 73 is fixedly connected to the control block 28 , and the return spring 73 is used to push the control block 28 to move toward a side close to the control tube 27 .

[0041] Since the connecting plate 25 divides the pressure tank 24 into two parts, when the temperature inside the reactor 1 increases, the gas inside the chamber close to the mixture side expands due to the heat, pushing the connecting plate 25 to move toward the inside of the chamber away from the mixture, pushing the gas in the chamber. At this time, the thrust of the reset spring 73 is smaller than the thrust of the connecting plate 25. When the temperature of the mixture drops to a certain level, the thrust of the reset spring 73 is greater than the thrust of the connecting plate 25. The reset spring 73 pushes the gas toward the inside of the chamber away from the mixture, so that the connecting plate 25 is reset.

[0042] like Figure 2 As shown, a heating chamber 9 is provided on the side wall of the reactor 1 , and the heating chamber 9 is used to transfer heat to the interior of the reactor 1 .

[0043] When the temperature inside the reactor 1 does not meet the reaction requirements, the heating chamber 9 transfers heat to the inside of the reactor 1 to make the mixed temperature reach a certain level.

[0044] When the present application is in use, the resin prepolymer and styrene are added from the feed port 8, and the rotating motor 61 is started, so that the rotating motor 61 drives the rotating rod 2 to rotate, and when the rotating rod 2 rotates, it drives the stirring plate 6 to stir, and puts an initiator into the feed port 8 to accelerate the reaction between the resin prepolymer and styrene. During the reaction, heat is released, and the temperature in the reactor 1 increases, and the temperature between the mixture increases. When the temperature reaches a certain level, the pressure of the pressure groove 24 close to the outer wall of the connecting sleeve 21 increases, pushing the connecting plate 25 toward the inner wall of the connecting sleeve 21, so that the gas moves toward the connecting pipe 26, and the gas enters the connecting disk 3 through the connecting pipe 26, and enters the connecting groove 31 in the hollow shape of the connecting disk 3, and moves to the control tube 27 in the connecting groove 31. Due to the push of the gas in the control tube 27, the control block 28 moves toward Move close to the connecting ring 7 to connect the connecting port 72 on the control block 28 with the connecting cavity 71 in the connecting ring 7, and use an external pump to introduce low-temperature gas into the heat exchange tube 22 to reduce the temperature of the heat exchange tube 22. Due to the reduction in the temperature of the heat exchange tube 22, the temperature of the side wall of the connecting sleeve 21 is reduced. Due to the outer wall of the mixture on the connecting sleeve 21, the temperature of the mixture is reduced. When the temperature of the mixture reaches a certain level, the adjusting spring 41 pushes the connecting plate 25 to move toward the side close to the outer wall of the connecting block 23, and in this process, the control block 28 is moved toward the side of the control tube 27 under the push of the reset spring 73. When the control block 28 moves, the connection between the connecting port 72 on the control block 28 and the connecting cavity 71 is closed, and the temperature of the heat exchange tube 22 and the resin is maintained at a certain level. The above operation is continued when the temperature rises during the continuous reaction of the mixture.

[0045] During the rotation of the rotating rod 2, the stirring plate 6 drives the mixture away from the connecting sleeve 21 to move toward the connecting sleeve 21, so that the mixture is fully cooled down. In addition, due to the rotation of the rotating rod 2, the connecting sleeve 21 is driven to rotate, so that the cleaning scraper 51 scrapes the mixture located on the outer wall of the connecting sleeve 21.

[0046] When the reaction of the mixture in the reactor 1 is completed, the discharge port 81 is opened to discharge the resin from the discharge port 81 .

[0047] In this embodiment, since the dilution reaction of the UPR resin is sensitive to temperature, the reaction process can be accurately controlled by real-time monitoring of the temperature in the reactor 1, which can ensure that the reaction is carried out within the optimal temperature range to a certain extent, and the appropriate temperature can promote the full reaction of the resin and the initiator, improve the uniformity and stability of the resin, and thus improve the quality of the final product.

[0048] In this embodiment, when the temperature inside the reactor 1 is high, the connecting plate 25 will automatically move and connect the heat exchange tube 22 with the air with a lower external temperature, thereby achieving real-time adjustment, maintaining the stability of the reaction temperature, and preventing the temperature inside the reactor 1 from being too high, which would damage the performance of the resin or cause danger.

[0049] In this embodiment, by arranging a plurality of pressure grooves 24 and a connecting plate 25 on the connecting block 23, the temperature of different areas in the reactor 1 can be monitored in real time, thereby obtaining more comprehensive temperature distribution information. Moreover, since the temperature can be monitored and controlled at multiple points, the temperature inside the reactor 1 can be controlled more evenly, thereby reducing the problem of local overheating or insufficient cooling.

[0050] In this embodiment, the reset amount of the adjusting spring 41 can adjust the sensitivity of the connecting plate 25 to temperature changes, so that the temperature control system can adjust the sensitivity of the detection according to actual needs. By adjusting the spring 41, a specific temperature range can be set, so that the temperature control system can be triggered within the range, thereby meeting different process requirements. The reset amount of the adjusting spring 41 can be precisely controlled, thereby achieving precise setting of the detection temperature range and improving the accuracy of temperature control.

[0051] In this embodiment, by scraping off the residual resin on the outside of the connecting block 23, the resin can be prevented from accumulating on the connecting block 23 and affecting the temperature detection inside the connecting block 23, thereby ensuring the accuracy of temperature detection to a certain extent. The residual resin may form an insulating layer, affecting the pressure tank 24's perception of the actual temperature. By scraping off the residue, the temperature misreading caused by the insulating layer can be avoided.

[0052] In this embodiment, the resin residue may form an insulation layer, reducing the heat exchange efficiency. Scraping the residual resin can keep the heat exchange surface clean and ensure that heat can be effectively transferred. The resin residue may accumulate and solidify on the heat exchange surface to form a scale layer, affecting the heat exchange effect. Regular scraping can prevent this from happening.

[0053] The implementation principle of a stirring device for UPR resin production in the embodiment of the present application is as follows: resin prepolymer and styrene are added from the feed port 8, and the rotating motor 61 is started, so that the rotating motor 61 drives the rotating rod 2 to rotate, and when the rotating rod 2 rotates, it drives the stirring plate 6 to stir, and an initiator is put into the feed port 8 to accelerate the reaction between the resin prepolymer and styrene. During the reaction, heat is released, and the temperature in the reactor 1 increases, and the temperature between the mixture increases. When the temperature reaches a certain level, the pressure of the pressure groove 24 close to the outer wall of the connecting sleeve 21 increases, pushing the connecting plate 25 toward the inner wall of the connecting sleeve 21, so that the gas moves toward the connecting pipe 26, and the gas enters the connecting disk 3 through the connecting pipe 26, and enters the connecting groove 31 in the hollow shape of the connecting disk 3, and moves to the control tube 27 in the connecting groove 31. Because the gas in the control tube 27 pushes The control block 28 moves toward the connection ring 7, so that the connecting port 72 on the control block 28 is connected with the connecting cavity 71 in the connecting ring 7, and an external pump is used to introduce a gas with a lower temperature into the heat exchange tube 22 to reduce the temperature of the heat exchange tube 22. Due to the reduction in the temperature of the heat exchange tube 22, the temperature of the side wall of the connecting sleeve 21 is driven to decrease. Due to the outer wall of the mixture on the connecting sleeve 21, the temperature of the mixture is reduced. When the temperature of the mixture reaches a certain level, the adjusting spring 41 pushes the connecting plate 25 to move toward the side close to the outer wall of the connecting block 23, and in this process, the control block 28 is moved toward one side of the control tube 27 under the push of the reset spring 73. When the control block 28 moves, the connection between the connecting port 72 on the control block 28 and the connecting cavity 71 is closed, and the temperature of the heat exchange tube 22 and the resin is maintained at a certain level. The above operation is continued when the temperature rises during the continuous reaction of the mixture.

[0054] During the rotation of the rotating rod 2, the stirring plate 6 drives the mixture away from the connecting sleeve 21 to move toward the connecting sleeve 21, so that the mixture is fully cooled down. In addition, due to the rotation of the rotating rod 2, the connecting sleeve 21 is driven to rotate, so that the cleaning scraper 51 scrapes the mixture located on the outer wall of the connecting sleeve 21.

[0055] When the reaction of the mixture in the reactor 1 is completed, the discharge port 81 is opened to discharge the resin from the discharge port 81 .

[0056] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A stirring device for UPR resin production, comprising a reaction kettle (1), characterized in that: The reactor (1) is rotatably connected to a rotating rod (2), the rotating rod (2) is fixedly connected to a connecting sleeve (21), a heat exchange tube (22) for controlling the temperature is fixedly connected to the connecting sleeve (21), a connecting block (23) is fixedly connected to the connecting sleeve (21), a pressure groove (24) is provided on the connecting block (23), a connecting plate (25) is slidably connected to the pressure groove (24), a connecting tube (26) is fixedly connected to the rotating rod (2), a control tube (27) is provided inside the rotating rod (2), a control block (28) is slidably connected inside the rotating rod (2), and the control block (28) is capable of controlling the connection between the control tube (27) and external air.

2. A stirring device for UPR resin production according to claim 1, characterized in that: A connecting disk (3) is fixedly connected to the rotating rod (2), the interior of the connecting disk (3) is arranged to be hollow, the connecting disk (3) is connected to the connecting pipe (26), one end of the connecting pipe (26) away from the connecting disk (3) is connected to one end of the pressure groove (24), and a connecting groove (31) is arranged inside the rotating rod (2), and the connecting groove (31) is connected to the bottom of the control tube (27) and the interior of the connecting disk (3).

3. A stirring device for UPR resin production according to claim 1, characterized in that: An adjusting bolt (4) is fixedly connected to the connecting block (23), an adjusting spring (41) is fixedly connected to the adjusting bolt (4), one end of the adjusting spring (41) away from the adjusting bolt (4) is fixedly connected to the connecting plate (25), and the compression strength of the adjusting spring (41) can be adjusted by rotating the adjusting bolt (4).

4. A stirring device for UPR resin production according to claim 1, characterized in that: A fixing plate (5) is fixedly connected to the reaction kettle (1), a cleaning scraper (51) is fixedly connected to the connecting plate (25), the cleaning scraper (51) is sleeved on the outer wall of the connecting sleeve (21), and the cleaning scraper (51) is used to clean the resin attached to the outer side of the connecting sleeve (21).

5. The stirring device for UPR resin production according to claim 1, characterized in that: The rotating rod (2) is fixedly connected to a stirring plate (6), the stirring plate (6) being arranged at an angle, and the stirring plate (6) can drive the resin to move, and move the resin located on the outside toward the inside of the reaction kettle (1).

6. A stirring device for UPR resin production according to claim 1, characterized in that: A rotating motor (61) is fixedly connected to the reaction kettle (1), an output shaft of the rotating motor (61) is fixedly connected to the rotating rod (2), and the rotating motor (61) is used to drive the rotating rod (2) to rotate.

7. A stirring device for UPR resin production according to claim 1, characterized in that: A connecting ring (7) is fixedly connected to the rotating rod (2), a connecting ring (7) has a connecting cavity (71) formed inside, and a connecting port (72) is formed on the control block (28). When the control block (28) moves upward, the connecting cavity (71) is connected to the connecting port (72), and the connecting port (72) is connected to the control tube (27).

8. The stirring device for UPR resin production according to claim 1, characterized in that: A return spring (73) is fixedly connected to the control block (28), and the return spring (73) is used to push the control block (28) to move towards a side close to the control tube (27).

9. A stirring device for UPR resin production according to claim 1, characterized in that: The reaction kettle (1) is provided with a feed inlet (8) for pouring materials and a discharge outlet (81) for discharging materials.

10. The stirring device for UPR resin production according to claim 1, characterized in that: A heating chamber (9) is provided on the side wall of the reaction kettle (1), and the heating chamber (9) is used to transfer heat to the interior of the reaction kettle (1).

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