Reaction kettle device for alcoholysis recovery of polyurethane foam
By introducing feed and mixing mechanism into the reactor, uniform contact between the alcoholic agent and the polyurethane foam is achieved, the problem of insufficient alcoholic solution is solved, the alcoholic solution efficiency is improved and energy consumption is reduced.
Patent Information
- Application Number
- CN202510690700.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-27
- Publication Date
- 2025-08-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When treating polyurethane foam in existing alcoholylation reactors, it is difficult for the alcoholylation agent to penetrate uniformly, resulting in insufficient reactions and increased side reactions, and the reaction time needs to be extended, energy consumption and reduced production capacity.
A reactor device is designed, including a feeding mechanism and a mixing mechanism. The feeding mechanism realizes multi-point addition of auxiliary materials through a vertical rod and a lifting rod. The mixing mechanism improves the mixing efficiency through a rotating ring and a mixer to ensure that the alcoholylic agent is in full contact with the polyurethane foam.
It improves alcoholylation efficiency, reduces alcoholylation time, reduces side reactions, reduces energy consumption, and improves production capacity.
Smart Images
Figure CN120502296A_ABST
Abstract
Description
Technical Field
[0001] The invention specifically relates to the technical field of polyurethane foam recovery, in particular to a reactor device for recovering polyurethane foam by alcoholysis. Background Art
[0002] Polyurethane foam, a polymer material widely used in insulation, sound insulation, packaging, and other fields, has made waste recycling a key environmental issue. Alcoholysis is currently one of the mainstream technologies for polyurethane foam recycling, using an alcoholysis agent (such as a polyol) to break down polyurethane foam into reusable oligomers or monomers. However, existing alcoholysis reactors present the following challenges in practical applications:
[0003] Traditional reactors mainly use mechanical stirring to achieve the mixing of alcoholysis agents and polyurethane foam. However, polyurethane foam has low density and large volume, and is easy to float on the liquid surface, making it difficult for the alcoholysis agent to penetrate evenly and the reaction efficiency is low. The alcoholysis agent is usually added from a single location, which is prone to local overdose or underdose, resulting in incomplete reaction or increased side reactions, affecting product quality. Due to insufficient mixing, the reaction time needs to be extended to ensure complete alcoholysis, resulting in increased energy consumption and decreased production capacity. Summary of the Invention
[0004] The object of the present invention is to provide a reactor device for recovering polyurethane foam by alcoholysis, so as to solve the problems raised in the above background technology.
[0005] To achieve the above object, the present invention provides the following technical solutions:
[0006] A reactor device for recycling polyurethane foam by alcoholysis comprises a reactor body, a top cover and a feeding mechanism, a top plate is arranged between the reactor body and the top cover, the feeding mechanism comprises a vertical rod and a lifting rod, the vertical rod is fixedly connected to the reactor body, the lifting rod is slidably mounted on the top plate, and the lifting rod is slidably connected to the vertical rod; a plurality of auxiliary material cavities are provided inside the vertical rod, the lifting rod is a hollow structure, and a plurality of drainage holes are provided on the surface of the lifting rod; a drainage port is provided on the side wall of the vertical rod, the drainage port is connected to the interior of the auxiliary material cavity, a piston plate is fixedly mounted on the rod section of the lifting rod located inside the auxiliary material cavity, a baffle is provided on the side of the piston plate, the baffle is slidably connected to the inner wall of the auxiliary material cavity, and a slot for the baffle to enter is provided at the bottom of the auxiliary material cavity, and an opening is provided on the baffle.
[0007] As a further solution of the present invention: a limit plate is provided at the upper end of the lifting rod, and the limit plate is connected to the top plate via a return spring sleeved on the outside of the lifting rod.
[0008] As a further solution of the present invention: a plurality of spiral blades are rotatably mounted on the side wall of the vertical pole, and a rotating motor for driving the spiral blades to rotate is fixedly mounted inside the vertical pole.
[0009] As a further solution of the present invention: a first feed port and a second feed port are provided on the top cover, a discharge port is provided on the top plate, the first feed port is connected to the upper end of the lifting rod through a connecting pipe, and the connecting pipe is a hose structure; the second feed port and the discharge port are connected, and at least one discharge port is provided at the bottom of the reactor body.
[0010] As a further solution of the present invention: a mixing mechanism is further provided inside the reactor body, the mixing mechanism comprising a rotating ring and a mixer, and the rotating ring is rotatably mounted on the bottom of the top plate.
[0011] As a further solution of the present invention: a guide frame is fixedly installed on the inner side of the rotating ring, a sleeve is slidably installed on the guide frame, and the mixer is fixedly connected to the sleeve; a screw is rotatably installed on the rotating ring, the screw is threadedly connected to the sleeve, and a driven gear is fixedly installed on one end of the screw, a second gear ring is fixedly installed on the bottom of the top plate, and the driven gear is meshed with the second gear ring.
[0012] As a further solution of the present invention: the second gear ring is provided with a smooth section and a toothed section, and the smooth section and the toothed section are intermittently arranged.
[0013] As a further solution of the present invention: a rotating groove is provided on the rotating ring, the screw is rotatably installed inside the rotating groove, and a first protrusion is provided on the screw, and a second protrusion is provided inside the rotating groove, and the first protrusion and the second protrusion are connected by a connecting spring.
[0014] As a further solution of the present invention: a first ring gear is rotatably mounted on the top plate, and the first ring gear is fixedly connected to the rotating ring; a first gear is rotatably mounted on the top plate, and the first gear is engaged with the first ring gear; a drive motor is also fixedly mounted on the top cover, and the output end of the drive motor is fixedly connected to the first gear.
[0015] As a further solution of the present invention: a second gear is rotatably mounted on the top plate, the second gear is engaged with the first gear, and a push rod is fixedly mounted on the rotating shaft of the second gear, and a lifting plate that cooperates with the push rod is fixedly mounted on the upper side of the lifting rod.
[0016] Compared with the prior art, the present invention has the following beneficial effects: a feeding mechanism is provided inside the reactor, the feeding mechanism includes a vertical rod and a lifting rod, a plurality of auxiliary material cavities are opened inside the vertical rod, when auxiliary materials are added, the auxiliary materials flow into the reactor body through the auxiliary material cavities of different heights, so that the auxiliary materials are quickly contacted with the polyurethane foam, the alcoholysis efficiency of the polyurethane foam is improved, and the alcoholysis time of the polyurethane foam is reduced; the present invention is also provided inside the reactor body, the mixing mechanism includes a rotating ring and a mixer, during the rotation of the rotating ring, the position of the mixer is adjusted by a screw, the working range of the mixer is increased, and the alcoholysis efficiency of the polyurethane foam is further improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of a reactor device for alcoholysis recovery of polyurethane foam.
[0018] Figure 2 Partial cross-section of the reactor for alcoholysis recovery of polyurethane foam Figure 1 .
[0019] Figure 3 Partial cross-section of the reactor for alcoholysis recovery of polyurethane foam Figure 2 .
[0020] Figure 4 Partial cross-section of the reactor for alcoholysis recovery of polyurethane foam Figure 3 .
[0021] Figure 5 This is a schematic diagram of the structure of the feeding mechanism in the reactor device for alcoholysis recovery of polyurethane foam.
[0022] Figure 6 for Figure 5 A local enlarged schematic diagram of point A in the middle.
[0023] Figure 7 This is a partial schematic diagram of the mixing mechanism in the reactor device for alcoholysis recovery of polyurethane foam.
[0024] Figure 8 This is a schematic diagram of the structure of the rotating ring and screw in the reactor device for alcoholysis recovery of polyurethane foam.
[0025] In the figure: 10-reactor body, 11-discharge port, 20-top cover, 21-first feed port, 22-second feed port, 23-top plate, 231-first ring gear, 232-first gear, 233-discharge port, 234-second gear, 235-push rod, 236-second ring gear, 40-mixing mechanism, 41-rotating ring, 42-mixer, 43-guide frame, 44-sleeve, 45-driven gear, 46-screw, 47-connecting spring, 50-feeding mechanism, 51-vertical rod, 511-spiral blade, 512-rotating motor, 513-discharge port, 52-lifting rod, 521-lifting plate, 522-reset spring, 523-discharge hole, 53-piston plate, 54-slot, 541-opening, 30-drive motor. DETAILED DESCRIPTION
[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0027] Example 1
[0028] See also Figures 1-6 In an embodiment of the present invention, a reactor device for recovering polyurethane foam by alcoholysis includes a reactor body 10, a top cover 20 and a feeding mechanism 50, wherein the top cover 20 is detachably mounted on the upper part of the reactor body 10, and a top plate 23 is provided between the reactor body 10 and the top cover 20, and the feeding mechanism 50 includes a vertical rod 51 and a lifting rod 52, the lower end of the vertical rod 51 is fixedly connected to the bottom of the reactor body 10, the lifting rod 52 is slidably mounted on the top plate 23, and the lifting rod 52 is slidably connected to the vertical rod 51; a plurality of auxiliary material cavities are defined inside the vertical rod 51, the lifting rod 52 is a hollow structure, and a plurality of drainage holes 523 are defined on the surface of the lifting rod 52. When auxiliary material is added, the drainage holes 523 are located inside the corresponding auxiliary material cavities. By adding auxiliary material to the interior of the lifting rod 52, the auxiliary material flows into each auxiliary material cavity through the drainage holes 523 on the lifting rod 52. A drain port 513 is provided on the side wall of the vertical rod 51. The drain port 513 is provided corresponding to the auxiliary material cavity and is connected to the interior of the auxiliary material cavity. The auxiliary material inside the auxiliary material cavity flows into the interior of the reactor body 10 through the drain port 513. When the auxiliary material is added, the auxiliary material flows into the interior of the reactor body 10 through the auxiliary material cavity of different heights, so that the auxiliary material quickly contacts the polyurethane foam, thereby improving the alcoholysis efficiency of the polyurethane foam and reducing the alcoholysis time of the polyurethane foam.
[0029] In the embodiment of the present application, a piston plate 53 is fixedly installed on the rod section of the lifting rod 52 located inside the auxiliary material chamber, and a baffle is provided on the side of the piston plate 53. The baffle is slidably connected to the inner wall of the auxiliary material chamber, and a slot 54 for the baffle to enter is provided at the bottom of the auxiliary material chamber, and an opening 541 is provided on the baffle. When the auxiliary material enters the auxiliary material chamber from the drainage hole 523, the lifting rod 52 controls the piston plate 53 to move downward. During this process, the baffle moves downward synchronously with the piston plate 53 and aligns the opening 541 with the drainage port 513. When the opening 541 is connected to the drainage port 513, the piston plate 53 squeezes the auxiliary material, so that the auxiliary material flows to the reactor body 10 through the opening 541 and the drainage port 513 in turn.
[0030] Furthermore, in the embodiment of the present application, a limit plate is provided at the upper end of the lifting rod 52, and the limit plate is connected to the top plate 23 via a reset spring 522 sleeved on the outside of the lifting rod 52, and the reset spring 522 is used to drive the lifting rod 52 to reset after it slides down.
[0031] Furthermore, in an embodiment of the present application, a plurality of spiral blades 511 are rotatably mounted on the side wall of the vertical rod 51, and a rotating motor 512 is fixedly mounted inside the vertical rod 51 to drive the spiral blades 511 to rotate. When the rotating motor 512 drives the spiral blades 511 to rotate, the spiral blades 511 push the auxiliary material flowing out of the liquid port 513 to diffuse outward, and promote the mixing of the auxiliary material with the polyurethane foam inside the reactor body 10 during the flow of the auxiliary material, thereby improving the processing efficiency of the polyurethane foam.
[0032] In addition, in the embodiment of the present application, the top cover 20 is provided with a first feed port 21 and a second feed port 22, and the top plate 23 is provided with a discharge port 233. The first feed port 21 is connected to the upper end of the lifting rod 52 via a connecting pipe, the connecting pipe being a hose structure; the second feed port 22 is connected to the discharge port 233, and the second feed port 22 is used to add the polyurethane foam to be processed. The bottom of the reactor body 10 is provided with at least one discharge port 11, which is used to discharge the processed polyurethane foam.
[0033] Example 2
[0034] See also Figures 1-6In an embodiment of the present invention, a reactor device for recovering polyurethane foam by alcoholysis includes a reactor body 10, a top cover 20 and a feeding mechanism 50, wherein the top cover 20 is detachably mounted on the upper part of the reactor body 10, and a top plate 23 is provided between the reactor body 10 and the top cover 20, and the feeding mechanism 50 includes a vertical rod 51 and a lifting rod 52, the lower end of the vertical rod 51 is fixedly connected to the bottom of the reactor body 10, the lifting rod 52 is slidably mounted on the top plate 23, and the lifting rod 52 is slidably connected to the vertical rod 51; a plurality of auxiliary material cavities are defined inside the vertical rod 51, the lifting rod 52 is a hollow structure, and a plurality of drainage holes 523 are defined on the surface of the lifting rod 52. When auxiliary material is added, the drainage holes 523 are located inside the corresponding auxiliary material cavities. By adding auxiliary material to the interior of the lifting rod 52, the auxiliary material flows into each auxiliary material cavity through the drainage holes 523 on the lifting rod 52. A drain port 513 is provided on the side wall of the vertical rod 51. The drain port 513 is provided corresponding to the auxiliary material cavity and is connected to the interior of the auxiliary material cavity. The auxiliary material inside the auxiliary material cavity flows into the interior of the reactor body 10 through the drain port 513. When the auxiliary material is added, the auxiliary material flows into the interior of the reactor body 10 through the auxiliary material cavity of different heights, so that the auxiliary material quickly contacts the polyurethane foam, thereby improving the alcoholysis efficiency of the polyurethane foam and reducing the alcoholysis time of the polyurethane foam.
[0035] In the embodiment of the present application, a piston plate 53 is fixedly installed on the rod section of the lifting rod 52 located inside the auxiliary material chamber, and a baffle is provided on the side of the piston plate 53. The baffle is slidably connected to the inner wall of the auxiliary material chamber, and a slot 54 for the baffle to enter is provided at the bottom of the auxiliary material chamber, and an opening 541 is provided on the baffle. When the auxiliary material enters the auxiliary material chamber from the drainage hole 523, the lifting rod 52 controls the piston plate 53 to move downward. During this process, the baffle moves downward synchronously with the piston plate 53 and aligns the opening 541 with the drainage port 513. When the opening 541 is connected to the drainage port 513, the piston plate 53 squeezes the auxiliary material, so that the auxiliary material flows to the reactor body 10 through the opening 541 and the drainage port 513 in turn.
[0036] Furthermore, in the embodiment of the present application, a limit plate is provided at the upper end of the lifting rod 52, and the limit plate is connected to the top plate 23 via a reset spring 522 sleeved on the outside of the lifting rod 52, and the reset spring 522 is used to drive the lifting rod 52 to reset after it slides down.
[0037] Furthermore, in an embodiment of the present application, a plurality of spiral blades 511 are rotatably mounted on the side wall of the vertical rod 51, and a rotating motor 512 is fixedly mounted inside the vertical rod 51 to drive the spiral blades 511 to rotate. When the rotating motor 512 drives the spiral blades 511 to rotate, the spiral blades 511 push the auxiliary material flowing out of the liquid port 513 to diffuse outward, and promote the mixing of the auxiliary material with the polyurethane foam inside the reactor body 10 during the flow of the auxiliary material, thereby improving the processing efficiency of the polyurethane foam.
[0038] In addition, in the embodiment of the present application, the top cover 20 is provided with a first feed port 21 and a second feed port 22, and the top plate 23 is provided with a discharge port 233. The first feed port 21 is connected to the upper end of the lifting rod 52 via a connecting pipe, the connecting pipe being a hose structure; the second feed port 22 is connected to the discharge port 233, and the second feed port 22 is used to add the polyurethane foam to be processed. The bottom of the reactor body 10 is provided with at least one discharge port 11, which is used to discharge the processed polyurethane foam.
[0039] See also Figures 1-8 The difference between Example 2 and Example 1 is that:
[0040] The reactor body 10 is further provided with a mixing mechanism 40, which includes a rotating ring 41 and a mixer 42. The rotating ring 41 is rotatably mounted on the bottom of the top plate 23, and a guide frame 43 is fixedly mounted on the inner side of the rotating ring 41. A sleeve 44 is slidably mounted on the guide frame 43, and the mixer 42 is fixedly connected to the sleeve 44; a screw 46 is rotatably mounted on the rotating ring 41, and the screw 46 is threadedly connected to the sleeve 44, and a driven gear 45 is fixedly mounted on one end of the screw 46, and a second ring gear 236 is fixedly mounted on the bottom of the top plate 23, and the driven gear 45 is meshed with the second ring gear 236. During the rotation of the rotating ring 41, the second ring gear 236 drives the driven gear 45 to rotate, thereby controlling the rotation of the screw 45, so that the screw 45 adjusts the position of the mixer 42 through the sleeve 44, thereby increasing the working range of the mixer 42;
[0041] Furthermore, in the embodiment of the present application, a smooth section and a toothed section are provided on the second gear ring 236, and the smooth section and the toothed section are intermittently provided. During the rotation of the rotating ring 41, the driven gear 45 passes through the smooth section and the toothed section alternately. When the driven gear 45 passes through the toothed section, the toothed section drives the driven gear 45 to rotate.
[0042] Further, if Figure 8As shown, in the embodiment of the present application, a rotating groove is provided on the rotating ring 41, and the screw 46 is rotatably installed inside the rotating groove, and a first protrusion is provided on the screw 46, and a second protrusion is provided inside the rotating groove. The first protrusion and the second protrusion are connected by a connecting spring 47. When the driven gear 45 passes through the toothed section, the toothed section drives the driven gear 45 to rotate. At this time, the connecting spring 47 is compressed. When the driven gear 45 passes through the smooth section, the connecting spring 47 recovers and drives the screw 46 to rotate in the opposite direction, and then controls the reset of the mixer 42 through the sleeve 44.
[0043] In the embodiment of the present application, a first ring gear 231 is rotatably mounted on the top plate 23, and the first ring gear 231 is fixedly connected to the rotating ring 41; a first gear 232 is rotatably mounted on the top plate 23, and the first gear 232 is engaged with the first ring gear 231; a drive motor 30 is also fixedly mounted on the top cover 20, and the output end of the drive motor 30 is fixedly connected to the first gear 232.
[0044] In addition, in the embodiment of the present application, a second gear 234 is rotatably mounted on the top plate 23, the second gear 234 is engaged with the first gear 232, and a push rod 235 is fixedly mounted on the rotating shaft of the second gear 234. A lifting plate 521 that cooperates with the push rod 235 is fixedly mounted on the upper side of the lifting rod 52. When the push rod 235 rotates, it intermittently squeezes the lifting plate 521, thereby driving the lifting rod 52 to move downward intermittently.
[0045] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.
[0046] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. A reactor device for recovering polyurethane foam by alcoholysis, characterized in that: The invention comprises a reactor body (10), a top cover (20) and a feeding mechanism (50), wherein a top plate (23) is provided between the reactor body (10) and the top cover (20), and the feeding mechanism (50) comprises a vertical rod (51) and a lifting rod (52), wherein the vertical rod (51) is fixedly connected to the reactor body (10), and the lifting rod (52) is slidably mounted on the top plate (23), and the lifting rod (52) is slidably connected to the vertical rod (51); a plurality of auxiliary material cavities are provided inside the vertical rod (51), and the lifting rod (52) is It is a hollow structure, and a plurality of drainage holes (523) are provided on the surface of the lifting rod (52); a drainage port (513) is provided on the side wall of the vertical rod (51), and the drainage port (513) is communicated with the interior of the auxiliary material chamber; a piston plate (53) is fixedly installed on the rod section of the lifting rod (52) located inside the auxiliary material chamber, and a baffle is provided on the side of the piston plate (53), and the baffle is slidably connected to the inner wall of the auxiliary material chamber, and a slot (54) for the baffle to enter is provided at the bottom of the auxiliary material chamber, and an opening (541) is provided on the baffle.
2. The reactor device for recovering polyurethane foam by alcoholysis according to claim 1, wherein A limit plate is provided at the upper end of the lifting rod (52), and the limit plate is connected to the top plate (23) via a return spring (522) sleeved on the outside of the lifting rod (52).
3. The reactor device for recovering polyurethane foam by alcoholysis according to claim 1, wherein A plurality of spiral blades (511) are rotatably mounted on the side wall of the vertical rod (51), and a rotating motor (512) for driving the spiral blades (511) to rotate is fixedly mounted inside the vertical rod (51).
4. The reactor device for recovering polyurethane foam by alcoholysis according to claim 1, wherein The top cover (20) is provided with a first feed port (21) and a second feed port (22), and the top plate (23) is provided with a discharge port (233). The first feed port (21) is connected to the upper end of the lifting rod (52) through a connecting pipe, and the connecting pipe is a hose structure; the second feed port (22) is connected to the discharge port (233), and at least one discharge port (11) is provided at the bottom of the reactor body (10).
5. The reactor device for recovering polyurethane foam by alcoholysis according to claim 1, characterized in that, A mixing mechanism (40) is further provided inside the reactor body (10). The mixing mechanism (40) comprises a rotating ring (41) and a mixer (42). The rotating ring (41) is rotatably mounted on the bottom of the top plate (23).
6. The reactor device for recovering polyurethane foam by alcoholysis according to claim 5, characterized in that: A guide frame (43) is fixedly mounted on the inner side of the rotating ring (41), a sliding sleeve (44) is slidably mounted on the guide frame (43), and the mixer (42) is fixedly connected to the sliding sleeve (44); a screw rod (46) is rotatably mounted on the rotating ring (41), the screw rod (46) is threadedly connected to the sliding sleeve (44), and a driven gear (45) is fixedly mounted on one end of the screw rod (46), and a second gear ring (236) is fixedly mounted on the bottom of the top plate (23), and the driven gear (45) is meshed with the second gear ring (236).
7. The reactor device for recovering polyurethane foam by alcoholysis according to claim 6, characterized in that: The second gear ring (236) is provided with a smooth section and a toothed section, and the smooth section and the toothed section are intermittently arranged.
8. The reactor device for recovering polyurethane foam by alcoholysis according to claim 7, characterized in that: The rotating ring (41) is provided with a rotating groove, the screw (46) is rotatably installed inside the rotating groove, and the screw (46) is provided with a first protrusion, and the rotating groove is provided with a second protrusion, and the first protrusion and the second protrusion are connected by a connecting spring (47).
9. The reactor device for recovering polyurethane foam by alcoholysis according to claim 8, characterized in that: A first gear ring (231) is rotatably mounted on the top plate (23), and the first gear ring (231) is fixedly connected to the rotating ring (41); a first gear (232) is rotatably mounted on the top plate (23), and the first gear (232) is meshed with the first gear ring (231); a driving motor (30) is also fixedly mounted on the top cover (20), and an output end of the driving motor (30) is fixedly connected to the first gear (232).
10. The reactor device for recovering polyurethane foam by alcoholysis according to claim 9, characterized in that: A second gear (234) is rotatably mounted on the top plate (23), the second gear (234) meshes with the first gear (232), and a push rod (235) is fixedly mounted on the rotating shaft of the second gear (234). A lifting plate (521) that matches the push rod (235) is fixedly mounted on the upper side of the lifting rod (52).