Polyurethane reactor condensation recovery equipment

Abstract

This utility model relates to the field of chemical equipment technology, and in particular to a polyurethane reactor condensation recovery device, including a recovery tank. Several sets of extrusion blocks are connected to the outside of the recovery tank. A mounting plate is connected to a support at the bottom of the recovery tank. An electric slide rail is mounted on the side of the mounting plate facing the recovery tank. A movable plate is slidably connected inside the mounting plate. The electric slide rail drives the movable plate. A guide rod is connected to the side of the movable plate facing the extrusion blocks. A connecting plate is slidably connected to the guide rod. A striking rod is rotatably connected to the side of the connecting plate perpendicular to the guide rod. The striking rod is slidably connected to the extrusion blocks. The electric slide rail causes the striking rod to reciprocate along a guide path. With the help of the inclined surfaces of the extrusion blocks, the striking rod slides upwards and impacts, guided by the inclined surfaces, and automatically adjusts back to its original striking posture, forming a stable, high-frequency, and irregularly distributed continuous striking effect. This rapidly shakes off the condensate droplets adhering to the inner wall of the tank, improving cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and in particular to a polyurethane reactor condensation and recovery device. Background Technology

[0002] Polyurethane, as a high-performance polymer material, is widely used in automobiles, construction, furniture, and other fields due to its excellent wear resistance, elasticity, and chemical stability. Its production process requires the polymerization of polyols and monomers such as isocyanates in an organic solvent using a reaction vessel. Because the reaction system is at high temperatures and the solvent is highly volatile, a large amount of volatile organic compounds escape with the vapor, resulting not only in raw material waste but also environmental pollution and safety risks. Therefore, efficient condensation and recovery equipment is crucial for reducing production costs and complying with environmental regulations.

[0003] Currently, polyurethane reactors commonly use condensers to recover volatile solvents. However, high-viscosity droplets easily remain on the inner wall of the condenser tubes, reducing heat transfer efficiency and clogging the pipes. A polyurethane reactor condensation recovery device (publication number CN216366689U) incorporates a hammering mechanism at the upper end of a vertical condenser tube. A motor-driven turntable rotates a cam, causing a hammering rod to periodically strike the outer wall of the condenser tube, using vibration to detach the adhering droplets. This design attempts to solve the adhesion problem, but its core technology relies on a physical peeling method using unilateral mechanical impact.

[0004] Although the aforementioned hammering mechanism can partially improve the adhesion problem, it still has significant drawbacks in practical applications. The lateral cam, turntable, and drive components of the hammering mechanism are relatively wide, making them difficult to arrange flexibly in compact reactor systems, increasing the overall size of the equipment. Moreover, the vibration is transmitted only through single-point impact, resulting in uneven stress on the condenser tube cross-section. The amplitude of the tube wall far from the impact point is significantly attenuated, and the residual droplets are poorly shaken off. If the shaking efficiency is to be improved, the hammering force needs to be increased, but excessive impact can easily cause cracks in the weld of the condenser tube. Long-term operation may damage the main structure of the reactor and pose a risk of leakage. Utility Model Content

[0005] To overcome the drawbacks of low space efficiency and poor vibration performance, this invention provides a polyurethane reactor condensation and recovery device, aiming to solve the aforementioned shortcomings.

[0006] A polyurethane reactor condensation and recovery device includes a recovery tank. Several sets of extrusion blocks are connected to the outside of the recovery tank. Each extrusion block has a downward-facing inclined surface. A mounting plate is connected to a support at the bottom of the recovery tank. An electric slide rail is mounted on the side of the mounting plate facing the recovery tank. A movable plate is slidably connected inside the mounting plate. The electric slide rail drives the movable plate. A guide rod is connected to the side of the movable plate facing the extrusion blocks. A connecting plate is slidably connected to the guide rod. A first reset spring is sleeved on the guide rod. One end of the first reset spring is connected to the movable plate, and the other end is connected to the connecting plate. A striking rod is rotatably connected to the side of the connecting plate perpendicular to the guide rod. The connecting plate has a long plate that restricts the rotation of the striking rod. The striking rod is slidably connected to the extrusion blocks. The connecting plate has a reset assembly for quickly resetting the striking rod.

[0007] Furthermore, the reset assembly includes an extension rod, the connecting plate is connected to a fixing frame, one end of the extension rod is coaxially connected to the rotating shaft of the striking rod, the other end of the extension rod is rotatably connected to the fixing frame, and a torsion spring is sleeved on the extension rod, one end of the torsion spring is connected to the rotating shaft of the striking rod, and the other end is connected to the fixing frame.

[0008] Furthermore, a sleeve is connected to the side of the connecting plate facing the extrusion block, a top block is slidably connected inside the sleeve, and a third return spring is provided inside the sleeve, with one end of the third return spring connected inside the sleeve and the other end connected to the top block.

[0009] Furthermore, a protective pad is attached to the side of the top block facing the recycling tank.

[0010] Furthermore, the striking rod is rotatably connected to a roller on one side facing the recycling tank.

[0011] Furthermore, a telescopic pad is provided between the movable plate and the connecting plate, and the telescopic pad is sleeved over the guide rod and the first return spring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The electric slide rail causes the striking rod to reciprocate along the guide path. With the help of several squeezing blocks and inclined surfaces, the striking rod slides and impacts upward guided by the inclined surfaces. It automatically adjusts back to the original striking posture, forming a stable, high-frequency and irregularly distributed continuous striking effect, which makes the condensed water droplets attached to the inner wall of the tank quickly shake off, improving cleaning efficiency.

[0014] 2. A buffer assembly consisting of a sleeve, a top block, and a third return spring ensures that when the connecting plate pushes the striking rod back towards the tank, the protective pad on the top block contacts the tank wall first and compresses the spring, thereby absorbing excess kinetic energy and preventing the connecting plate from slipping off the guide structure or damaging the elastic element due to inertia. This structure effectively protects the stability and service life of the main structure, ensuring safe and reliable operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the installation structure of the mounting plate and electric slide rail of this utility model.

[0017] Figure 3 This is a cross-sectional view of the mounting structure of the top block and the second reset spring of this utility model.

[0018] Figure 4 This is a schematic diagram of the installation structure of the fixing frame and torsion spring of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1_recycling tank, 2_compression block, 3_mounting plate, 4_electric slide rail, 5_moving plate, 6_connecting plate, 7_guide rod, 8_first return spring, 9_tapping rod, 10_sleeve, 11_top block, 12_third return spring, 13_fixed bracket, 14_extension rod, 15_torsion spring, 16_protective pad, 17_roller, 18_telescopic pad. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Example: A polyurethane reactor condensation and recovery device, such as... Figures 1-4As shown, the system includes a recycling tank 1, squeezing blocks 2, mounting plates 3, electric slide rails 4, moving plates 5, connecting plates 6, guide rods 7, a first reset spring 8, a striking rod 9, and a reset assembly. Four sets of vertical squeezing blocks 2 are connected to the outside of the recycling tank 1. Each set contains several squeezing blocks 2, each with a downward-facing slope. There is a gap between any two squeezing blocks 2 in the same set. Four mounting plates 3 are welded to the support at the bottom of the recycling tank 1. An electric slide rail 4 is mounted on the side of each mounting plate 3 facing the recycling tank 1. A moving plate 5 is slidably connected inside the mounting plate 3. The electric slide rails 4 drive the moving plate 5 to slide up and down. A guide rod 7 is connected to one side facing the extrusion block 2. A connecting plate 6 is slidably connected to the guide rod 7. A first return spring 8 is sleeved on the guide rod 7. One end of the first return spring 8 is welded to the moving plate 5, and the other end is welded to the connecting plate 6. A striking rod 9 is rotatably connected to one side of the connecting plate 6 perpendicular to the guide rod 7. The connecting plate 6 is provided with a long plate to restrict the rotation of the striking rod 9. The striking rod 9 is slidably connected to the extrusion block 2. The distance between the extrusion blocks 2 is greater than the height of the striking rod 9, thereby ensuring that the striking rod 9 can fully contact the recycling tank 1. A reset assembly is provided at the pivot of the striking rod 9. The reset assembly is used to quickly reset the striking rod 9.

[0022] like Figure 2 and Figure 4 As shown, the reset assembly includes a fixed frame 13, an extension rod 14, and a torsion spring 15. The fixed frame 13 is connected to the connecting plate 6. One end of the extension rod 14 is coaxially connected to the rotating shaft of the striking rod 9, and the other end of the extension rod 14 is rotatably connected to the fixed frame 13. The torsion spring 15 is sleeved on the extension rod 14. One end of the torsion spring 15 is connected to the rotating shaft of the striking rod 9, and the other end is connected to the fixed frame 13.

[0023] like Figure 2 and Figure 3 As shown, it also includes a sleeve 10, a top block 11 and a third return spring 12. The sleeve 10 is connected to the side of the connecting plate 6 facing the pressing block 2. The top block 11 is slidably connected inside the sleeve 10. The third return spring 12 is provided inside the sleeve 10. One end of the third return spring 12 is connected inside the sleeve 10 and the other end is connected to the top block 11.

[0024] like Figure 3 As shown, it also includes a protective pad 16, which is connected to the side of the top block 11 facing the recycling tank 1.

[0025] like Figure 2 As shown, it also includes a roller 17, and the striking rod 9 is rotatably connected to the roller 17 on one side toward the recycling tank 1.

[0026] like Figure 1 As shown, it also includes a telescopic pad 18. A telescopic pad 18 is provided between the movable plate 5 and the connecting plate 6. The telescopic pad 18 is sleeved on the guide rod 7 and the first return spring 8.

[0027] During the condensation process, the operator activates all the electric slide rails 4, driving the moving plate 5 to reciprocate up and down. The striking rod 9 is pulled along with the connecting plate 6, sliding along the upward slope of the extrusion block 2. During this time, the connecting plate 6 slides along the guide rod 7, and the first return spring 8 continuously compresses and accumulates potential energy. When the striking rod 9 passes the top of the extrusion block 2, the first return spring 8 quickly rebounds, pushing the connecting plate 6 and the striking rod 9 back towards the extrusion block 2, causing the striking rod 9 to strike the side wall of the recovery tank 1. This impact generates vibration, effectively shaking off water droplets adhering to the inner wall of the tank. Because multiple electric slide rails 4 and moving plates 5 work alternately at different speeds, the timing and position of each striking rod 9's impact are not exactly the same, thus avoiding the regular shaking of water droplets and accelerating the dripping of water. Subsequently, all electric slide rails 4 stop working, ending one striking process.

[0028] When the connecting plate 6 pushes the striking rod 9 to impact the tank during its upward movement, the long plate on the connecting plate 6 restricts the striking rod 9 from flipping downward, ensuring smooth contact. During its return movement to the bottom, the striking rod 9 is pressed against the extrusion block 2, causing it to rotate around the axis connected to the connecting plate 6. This rotates the extension rod 14 and twists the torsion spring 15. The striking rod 9 slides downward along the side of the extrusion block 2, smoothly avoiding the obstruction of the extrusion block 2's plane. After the striking rod 9 has passed all the extrusion blocks 2, the torsion spring 15 returns to its original state, causing the striking rod 9 to automatically rotate back to its initial position and rest against the long plate of the connecting plate 6, parallel to the connecting plate 6. Thus, during the next upward movement, the striking rod 9 maintains the correct posture and can continue to effectively strike the recycling tank 1.

[0029] During the aforementioned movement, when the connecting plate 6 approaches the recycling tank 1 under the action of the spring, the protective pad 16 at the end of the top block 11 first contacts the surface of the tank. The protective pad 16 is designed to conform to the curved surface of the tank, which forces the top block 11 to slide inward within the sleeve 10 once contact occurs, thereby compressing the third return spring 12 therein. The buffering effect of the third return spring 12 effectively suppresses the overshoot caused by the inertia of the connecting plate 6, preventing the connecting plate 6 from excessively stretching the first return spring 8 and slipping off the guide rod 7. The top block 11 and the third return spring 12 together ensure the safe reset of the connecting plate 6 after impact with the recycling tank 1.

[0030] The striking rod 9 is equipped with a roller 17 on the side facing the recycling tank 1. When the striking rod 9 moves along the inclined surface of the extrusion block 2, the roller 17 can rotate, so that the contact between the striking rod 9 and the inclined surface of the extrusion block 2 changes from sliding to rolling, effectively preventing jamming. A telescopic pad 18 is sleeved around the first return spring 8 between the moving plate 5 and the connecting plate 6. It is compressed or stretched synchronously with the sliding of the connecting plate 6 on the guide rod 7, creating a stable working environment for the first return spring 8 and avoiding external debris or friction from affecting the function of the spring.

[0031] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. A polyurethane reactor condensate recovery apparatus, characterized by: The system includes a recycling tank (1), with several sets of extrusion blocks (2) connected to the outside of the recycling tank (1). The extrusion blocks (2) are provided with downward-facing inclined surfaces. A mounting plate (3) is connected to a support at the bottom of the recycling tank (1). An electric slide rail (4) is installed on the side of the mounting plate (3) facing the recycling tank (1). A movable plate (5) is slidably connected inside the mounting plate (3). The electric slide rail (4) is used to drive the movable plate (5). A guide rod (7) is connected to the side of the movable plate (5) facing the extrusion blocks (2). The guide rod (7) has... A connecting plate (6) is slidably connected. A first reset spring (8) is sleeved on the guide rod (7). One end of the first reset spring (8) is connected to the moving plate (5), and the other end is connected to the connecting plate (6). A striking rod (9) is rotatably connected to one side of the connecting plate (6) perpendicular to the guide rod (7). The connecting plate (6) is provided with a long plate that restricts the rotation of the striking rod (9). The striking rod (9) is slidably connected to the pressing block (2). The connecting plate (6) is provided with a reset assembly for quickly resetting the striking rod (9).

2. The polyurethane reactor condensation and recovery equipment according to claim 1, characterized in that: The reset assembly includes an extension rod (14), and a fixed frame (13) is connected to the connecting plate (6). One end of the extension rod (14) is coaxially connected to the rotating shaft of the striking rod (9), and the other end of the extension rod (14) is rotatably connected to the fixed frame (13). A torsion spring (15) is sleeved on the extension rod (14). One end of the torsion spring (15) is connected to the rotating shaft of the striking rod (9), and the other end is connected to the fixed frame (13).

3. The polyurethane reactor condensation and recovery equipment according to claim 2, characterized in that: The connecting plate (6) is connected to a sleeve (10) on the side facing the extrusion block (2). A top block (11) is slidably connected inside the sleeve (10). A third reset spring (12) is provided inside the sleeve (10). One end of the third reset spring (12) is connected inside the sleeve (10), and the other end is connected to the top block (11).

4. The polyurethane reactor condensation and recovery equipment according to claim 3, characterized in that: The top block (11) is connected to a protective pad (16) on the side facing the recycling tank (1).

5. The polyurethane reactor condensation and recovery equipment according to claim 1, characterized in that: The striking rod (9) is rotatably connected to a roller (17) on one side facing the recycling tank (1).

6. The polyurethane reactor condensation and recovery equipment according to claim 1, characterized in that: A telescopic pad (18) is provided between the movable plate (5) and the connecting plate (6), and the telescopic pad (18) is sleeved on the guide rod (7) and the first return spring (8).

Images