A new polyurethane production plant

Abstract

The utility model discloses a novel polyurethane production facility relates to polyurethane production technical field, this novel polyurethane production facility, including the mixing box, the upper end of mixing box is provided with the apron, the upper end of apron is provided with frequency conversion motor, the output of frequency conversion motor is provided with the rotating column, the outside of rotating column is provided with the mixing subassembly, the lower end center of mixing box is provided with the blanking tube, the periphery lower surface of mixing box all is provided with the support leg, and support leg and mixing box weld fixed, the mixing subassembly includes first connecting seat, and first connecting seat cover is in rotating column near the outside of top end, and this scheme has solved the mixing of current polyurethane raw materials, mostly through the mixing of mixed leaf form's mixed leaf, raw materials and mixed leaf contact area is big, and raw material throughput is little, and the resistance is big when rotating, leads to motor carrying capacity is big, and is easy to cause damage, and the whole form's mixed leaf damage also is not easy to change the problem.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane production technology, specifically a new type of polyurethane production equipment. Background Technology

[0002] Polyurethane is a high molecular weight polymer with repeating urethane groups in its main chain. It is made by polyol and polyisocyanate through polycondensation reaction. During production, raw materials and additives are mixed using a mixing device.

[0003] For example, Chinese patent CN201693687U (Polyurethane Foaming Mixing Device) includes a support frame and a mixing tank fixed to the lower end of the support frame. A motor is fixedly installed inside the support frame, and a stirring shaft extending into the mixing tank is linked to the power shaft of the motor. A stirring paddle is linked to the stirring shaft. The lower end of the mixing tank is open, and a sealing ring is fitted on the lower end of the mixing tank. This invention utilizes multiple stirring paddles of varying lengths to thoroughly mix the raw materials, resulting in high mixing efficiency, uniform mixing, and improved foaming quality. The sealing ring at the lower end of the mixing tank provides a good seal with the mold, preventing raw material leakage.

[0004] However, in existing polyurethane raw material mixing, most methods use fan-shaped mixing blades. This results in a large contact area between the raw material and the mixing blades, but a small amount of raw material passing through. The high resistance during rotation leads to a high load on the motor, making it prone to damage. Furthermore, the integral mixing blades are difficult to replace once damaged. Therefore, this method does not meet current requirements. To address this, we propose a new type of polyurethane production equipment. Utility Model Content

[0005] The purpose of this utility model is to provide a new type of polyurethane production equipment to solve the problems mentioned in the background art, which are that when mixing polyurethane raw materials, most of them are mixed by mixing blades in the form of fan blades. The contact area between the raw materials and the mixing blades is large, the amount of raw materials passing through is small, the resistance during rotation is large, resulting in a large load on the motor, which is easy to cause damage, and the integral mixing blades are not easy to replace after damage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel polyurethane production equipment, comprising: a mixing chamber, a cover plate at the upper end of the mixing chamber, a variable frequency motor at the upper end of the cover plate, a rotating column at the output end of the variable frequency motor, a mixing component outside the rotating column, a feeding pipe at the center of the lower end of the mixing chamber, and support legs on all four sides of the lower surface of the mixing chamber, the support legs being welded and fixed to the mixing chamber.

[0007] Preferably, the hybrid assembly includes a first connecting seat, which is sleeved on the outside of the rotating column near its top, and crossbars are welded to the outer walls of the first connecting seat.

[0008] Preferably, the lower surface of the cross frame is provided with a connecting sleeve, and multiple connecting sleeves are provided. The lower end of the connecting sleeve is provided with a mixing column, and one end of the mixing column is inserted into the interior of the connecting sleeve.

[0009] Preferably, fastener holes are provided on the outer surface of the mixing column near the top and the outer surface of the connecting sleeve. The fastener holes penetrate the mixing column and the connecting sleeve. A fastener is inserted into one end of the fastener hole, and an external nut is used to fix the other end of the fastener after it passes through the fastener hole.

[0010] Preferably, the mixing component further includes a second connecting seat, which is sleeved on the outside of the rotating column near the bottom end. The second connecting seat has a fixing sleeve on all four sides, and a threaded groove is provided on one side surface of the fixing sleeve. The threaded groove is threadedly connected to a stable insert.

[0011] Preferably, the outer surface of the mixing column near the bottom is provided with a through groove, and the through groove penetrates the mixing column, and one end of the stable insertion column passes through the through groove.

[0012] Preferably, the top outer wall of the mixing box and the bottom outer wall of the cover plate are both provided with fixing flanges, and the two fixing flanges are fixed by external flange bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) This utility model sets a connecting sleeve at the lower end of the cross frame, inserts one end of the mixing column into the connecting sleeve, and then fixes one end of the fastener through the fastener hole with an external nut. This achieves the fixing of the mixing column and the connecting sleeve. Multiple mixing columns can be fixed in the same way. Compared with the existing integral large-area mixing blades, the contact area with the raw materials is small and the throughput is large, thereby reducing the contact area and the load during rotation. This avoids overload damage to the frequency converter motor, improves safety and service life. Moreover, the mixing column can be disassembled by removing the fastener, which is simple and convenient. This solves the problem that when mixing polyurethane raw materials, most of them are mixed by fan-shaped mixing blades, which have a large contact area between the raw materials and the mixing blades, a small amount of raw materials, and high resistance during rotation, resulting in a large load on the motor and easy damage. In addition, the integral mixing blades are not easy to replace after damage.

[0015] (2) By setting a fixing sleeve on the outer wall of the second connecting seat and setting a stabilizing insert on one side of the fixing sleeve, one end of the stabilizing insert passes through the through groove of multiple mixed columns in sequence and is threaded to the threaded groove. The stabilizing insert provides a stabilizing and reinforcing effect on multiple mixed columns, avoiding breakage and damage at the connection with the connecting sleeve when subjected to force, thereby improving the stress resistance and service life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the cover plate and the mixing component of this utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the hybrid column and connecting sleeve of this utility model;

[0019] Figure 4 This is a partial enlarged view of point A of this utility model;

[0020] In the diagram: 1. Mixing box; 2. Support leg; 3. Cover plate; 4. Fixed flange; 5. Variable frequency motor; 6. Feed pipe; 7. Rotating column; 8. Mixing assembly; 9. First connecting seat; 10. Cross frame; 11. Connecting sleeve; 12. Mixing column; 13. Threaded groove; 14. Stabilizing insert; 15. Second connecting seat; 16. Sleeve groove; 17. Fastener hole; 18. Fastener; 19. Through groove; 20. Fixed sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4This utility model provides an embodiment of a novel polyurethane production equipment, comprising: a mixing chamber 1, a cover plate 3 at the upper end of the mixing chamber 1, a variable frequency motor 5 at the upper end of the cover plate 3, a rotating column 7 at the output end of the variable frequency motor 5, a mixing component 8 outside the rotating column 7, the mixing component 8 including a first connecting seat 9, the first connecting seat 9 being sleeved on the outer side of the rotating column 7 near the top, a crossbeam 10 welded to the outer walls of the first connecting seat 9, a connecting sleeve 11 provided on the lower surface of the crossbeam 10, and multiple connecting sleeves 11, a mixing column 12 at the lower end of the connecting sleeve 11, and one end of the mixing column 12 being inserted into the connecting sleeve 11, fastener holes 17 being provided on the outer surface of the mixing column 12 near the top and the outer surface of the connecting sleeve 11, the fastener holes 17 penetrating the mixing column 12 and the connecting sleeve 11, a fastener 18 being inserted into one end of the fastener hole 17, and a nut being connected to one end of the fastener 18 after passing through the fastener hole 17. The mixing assembly 8 also includes a second connecting seat 15, which is sleeved on the outside of the rotating column 7 near the bottom. The second connecting seat 15 has a fixing sleeve 20 on all four sides. The fixing sleeve 20 has a threaded groove 13 on one side surface. The threaded groove 13 is threadedly connected to a stabilizing insert 14. The mixing column 12 has a through groove 19 on its outer surface near the bottom, and the through groove 19 passes through the mixing column 12. One end of the stabilizing insert 14 passes through the through groove 19. One end of the mixing column 12 is inserted into the connecting sleeve 11. Then, one end of the fastener 18 is passed through the fastener hole 17 and a nut is attached to fix it, thereby fixing the mixing column 12 to the connecting sleeve 11. Multiple mixing columns 12 are fixed in the same way.

[0023] Then, one end of the stabilizing insert 14 passes through the through slots 19 of multiple hybrid inserts 12 in sequence and is threaded to the threaded slot 13. The stabilizing insert 14 stabilizes and reinforces the multiple hybrid inserts 12, preventing the connection with the connecting sleeve 11 from breaking and being damaged when under stress, thereby improving the stress resistance and service life.

[0024] The top outer wall of the mixing chamber 1 and the bottom outer wall of the cover plate 3 are both equipped with fixed flanges 4, and the two fixed flanges 4 are fixed by external flange bolts. A discharge pipe 6 is set at the center of the lower end of the mixing chamber 1. Support legs 2 are set on the lower surface of the mixing chamber 1 around its perimeter, and the support legs 2 are welded and fixed to the mixing chamber 1. Part of the mixing component 8 is inserted into the mixing chamber 1. The connection between the mixing chamber 1 and the cover plate 3 is fixed by external flange bolts of the two fixed flanges 4. The raw materials for polyurethane production are introduced into the mixing chamber 1 through the feed port located on one side of the variable frequency motor 5. Then, the variable frequency motor 5 is started, and the output end of the variable frequency motor 5 drives the mixing component 8 to rotate. The raw materials are in contact with the multiple mixing columns 12, thereby realizing the raw material mixing operation. Compared with the existing integral large-area stirring blades, the contact area with the raw materials is small and the throughput is large, thereby reducing the contact area and the load during rotation, avoiding overload damage to the variable frequency motor 5, improving safety and service life. After mixing is completed, the raw materials can be discharged from the discharge pipe 6.

[0025] 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.

Claims

1. A novel polyurethane production equipment, comprising a mixing chamber (1), characterized in that: The mixing box (1) is provided with a cover plate (3) at the upper end, and a variable frequency motor (5) is provided at the upper end of the cover plate (3). A rotating column (7) is provided at the output end of the variable frequency motor (5). A mixing component (8) is provided outside the rotating column (7). A feeding pipe (6) is provided at the center of the lower end of the mixing box (1). Support legs (2) are provided on the lower surface of the mixing box (1) around the perimeter, and the support legs (2) are welded and fixed to the mixing box (1).

2. The novel polyurethane production equipment according to claim 1, characterized in that: The hybrid assembly (8) includes a first connecting seat (9), which is fitted around the outside of the rotating column (7) near the top. The outer walls of the first connecting seat (9) are all welded with crossbars (10).

3. The novel polyurethane production equipment according to claim 2, characterized in that: The lower surface of the cross frame (10) is provided with a connecting sleeve (11), and multiple connecting sleeves (11) are provided. The lower end of the connecting sleeve (11) is provided with a mixing column (12), and one end of the mixing column (12) is inserted into the connecting sleeve (11).

4. The novel polyurethane production equipment according to claim 3, characterized in that: Fastener holes (17) are provided on the outer surface of the mixing column (12) near the top and the outer surface of the connecting sleeve (11). The fastener holes (17) penetrate the mixing column (12) and the connecting sleeve (11). A fastener (18) is inserted into one end of the fastener hole (17), and a nut is attached to one end of the fastener (18) after it passes through the fastener hole (17).

5. The novel polyurethane production equipment according to claim 3, characterized in that: The mixing component (8) further includes a second connecting seat (15), which is sleeved on the outside of the rotating column (7) near the bottom end. The second connecting seat (15) is provided with a fixing sleeve (20) on all four sides. A threaded groove (13) is provided on one side surface of the fixing sleeve (20), and a stabilizing insert (14) is threaded into the threaded groove (13).

6. The novel polyurethane production equipment according to claim 5, characterized in that: The outer surface of the mixing column (12) near the bottom end is provided with a through groove (19), and the through groove (19) penetrates the mixing column (12), and one end of the stabilizing insert (14) passes through the through groove (19).

7. The novel polyurethane production equipment according to claim 1, characterized in that: The top outer wall of the mixing box (1) and the bottom outer wall of the cover plate (3) are both provided with fixed flanges (4), and the two fixed flanges (4) are fixed by external flange bolts.

Images