Uniform mixing device of polyurethane foaming machine
By designing a uniform mixing device with multiple stirring and heating in a polyurethane foaming machine, the problems of uneven mixing and low temperature affecting foaming are solved, and uniform mixing and effective foaming of raw materials are achieved.
Patent Information
- Application Number
- CN202421761506.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-24
AI Technical Summary
The existing polyurethane foaming machines are prone to cause uneven mixing during the mixing process, and the foaming effect is affected when the external temperature is low.
A uniform mixing device including a barrel, a material pump, a mixing rack, a stirring shaft and a heating wire is designed. The stirring rod is stirred and heated by heating wire multiple times to ensure that the raw materials are fully mixed at a suitable temperature.
It realizes uniform mixing of raw materials and effective foaming in low temperature environments, improving the mixing effect and foaming efficiency of the polyurethane foaming machine.
Smart Images
Figure CN223045007U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a uniform mixing device for a polyurethane foaming machine, in particular to a uniform mixing device for a polyurethane foaming machine, belonging to the technical field of polyurethane foaming machines. Background Technique
[0002] A special equipment for pouring and foaming polyurethane foam plastics. It is made of foam plastics through chemical reaction foaming of polyether polyol and polyisocyanate in the presence of various chemical additives such as foaming agents, catalysts, and emulsifiers. The polyurethane foaming machine can be used for the processing of automotive interiors, thermal insulation wall spraying, manufacturing of thermal insulation pipes, and sponges for bicycle and motorcycle seats.
[0003] The existing polyurethane foaming machines have the following disadvantages: 1. When the polyurethane foaming machine is continuously used and the raw materials are mixed, single stirring is likely to cause uneven mixing of the materials and insufficient mixing between the raw materials; 2. When the external environmental temperature is relatively low, the temperature of the raw materials during stirring is relatively low, affecting the foaming effect. Therefore, improvements are made for the above problems. Content of the Utility Model
[0004] The purpose of the utility model is to provide a uniform mixing device for a polyurethane foaming machine to solve the above problems. After the raw materials are transported into the mixing frame and stirred by stirring rod a, they are moved out from the bottom of the mixing frame and then moved up into the upper end of the mixing frame and stirred again by stirring rod b, with good mixing effect; heating wire a and heating wire b cooperate to heat the mixed materials so that they are mixed at a suitable temperature.
[0005] The utility model realizes the above purpose through the following technical solutions. A uniform mixing device for a polyurethane foaming machine includes a material barrel and a material pump. The material pump is equipped with a feeding pipe, the feeding pipe is equipped with a mixing frame, the mixing frame is installed inside a mixing box, the mixing box is rotatably connected with a stirring shaft, the stirring shaft is connected with a discharge pipe through a rotary joint, the stirring shaft is equipped with stirring rod b, a partition plate is installed inside the mixing frame, stirring rod a is installed below the stirring shaft, a feeding port is opened at the top end of the mixing frame, a discharge port is opened at the bottom end of the mixing frame, a heating wire b is connected around the outside of the mixing frame, the heating wire b is located inside the outer shell, an inner shell is installed inside the mixing box, and heating wire a is installed on the inner shell.
[0006] Preferably, a material pump is installed at the top end of the material barrel, and the material pump communicates with the mixing frame through a feeding pipe.
[0007] Preferably, a motor is installed at the bottom end of the mixing box, and the output end of the motor is fixedly connected with the stirring shaft.
[0008] Preferably, stirring rod a is located below the partition plate, and the partition plate is located below stirring rod b.
[0009] Preferably, the stirring shaft is provided with a vertical groove and a groove.
[0010] Preferably, the groove is connected to the vertical groove, and the stirring shaft communicates with the discharge pipe.
[0011] Preferably, the outer shell is installed on the outside of the mixing frame and is located inside the inner shell.
[0012] The beneficial effects of the present utility model are as follows:
[0013] After the raw materials are transported into the mixing frame and stirred by the stirring rod a, they are moved out from the bottom of the mixing frame and then moved up into the upper end of the mixing frame and stirred again by the stirring rod b, with good mixing effect; when the material pump is started, the raw materials in the material cylinder are pumped through the feeding pipe and sent below the mixing frame, and are stirred and mixed between the partition plate in the mixing frame and the bottom of the mixing box. The motor rotates to drive the connected stirring shaft to rotate, and the rotation of the stirring shaft drives the upper stirring rod b and the lower stirring rod a at the lower end to rotate and stir the raw materials. The raw materials below the partition plate are continuously stirred and mixed by the stirring rod a. During the continuous mixing process, the mixed materials at the bottom end are moved out of the mixing frame along the discharge port opened at the bottom end of the mixing frame and enter between the mixing frame and the inner shell. When continuously feeding, the mixed materials move up and enter between the upper end of the mixing box and the partition plate through the feeding port opened at the top end of the mixing frame, and the mixed materials at the bottom end can be sent to the upper end for re-stirring and mixing. The continuous rotation of the stirring shaft drives the stirring rod b to stir and mix the mixed materials again. After mixing, the mixed materials enter the vertical groove through the groove opened on the rotating shaft, and are moved up through the vertical groove and sent to the discharge pipe for discharging. The mixed materials can be mixed multiple times by the cooperation of the lower stirring rod a and the upper stirring rod b in the mixing frame, with good mixing effect.
[0014] The heating wire a and the heating wire b cooperate to heat the mixed materials so that they are mixed at a suitable temperature; when the external temperature is relatively low, the heating wire b outside the mixing frame is energized to generate heat, and the generated heat is transmitted inward, which can heat the mixed materials inside the mixing frame. The rotation of the stirring shaft drives the stirring rod to rotate, enabling the mixed materials to fully contact the mixing frame for heating. Moreover, a heating wire a is installed on the inner shell inside the mixing box. When the mixed materials move out of the mixing frame and move up along the gap between the inner shell and the mixing frame, the heat generated after the heating wire a is energized can re-heat the mixed materials to reach the set temperature, preventing the low temperature from affecting foaming. Description of the Drawings
[0015] Figure 1 It is a three-dimensional structure schematic diagram of the whole of the present utility model;
[0016] Figure 2 It is a structure schematic diagram of the whole of the present utility model;
[0017] Figure 3 It is a partial cross-sectional structure schematic diagram of the mixing box of the present utility model;
[0018] Figure 4 The Figure 3 cross-sectional view at position A in the present utility model.
[0019] In the figure: 1, barrel; 2, material pump; 3, feeding pipe; 4, mixing tank; 5, discharging pipe; 6, feeding port; 7, mixing rack; 8, heating wire a; 9, inner shell; 10, outer shell; 11, heating wire b; 12, discharging port; 13, stirring rod a; 14, motor; 15, stirring shaft; 16, stirring rod b; 17, vertical groove; 18, groove; 19, partition board. Specific embodiments
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] Example 1 Please refer to Figures 1-4 As shown, a uniform mixing device for a polyurethane foaming machine includes a barrel 1 and a material pump 2. The material pump 2 is equipped with a feeding pipe 3, and the feeding pipe 3 is equipped with a mixing rack 7. The raw materials are transported into the lower part inside the mixing rack 7 through the feeding pipe 3. The mixing rack 7 is installed inside the mixing tank 4. A stirring shaft 15 is rotatably connected inside the mixing tank 4, and the stirring shaft 15 rotates inside the mixing tank 4. The stirring shaft 15 is connected to the discharging pipe 5 through a rotary joint. The stirring shaft 15 is equipped with a stirring rod b 16, and the rotation of the stirring shaft 15 drives the connected stirring rod b 16 to rotate. A partition board 19 is installed inside the mixing rack 7. A stirring rod a 13 is installed below the stirring shaft 15, and the rotation of the stirring shaft 15 drives the connected stirring rod a 13 to rotate. The top end of the mixing rack 7 is provided with a feeding port 6, and the mixed material enters the upper end of the mixing rack 7 through the feeding port 6. The bottom end of the mixing rack 7 is provided with a discharging port 12, and the mixed material inside the mixing rack 7 is removed from the mixing rack 7 through the discharging port 12. A heating wire b 11 is wound around the outside of the mixing rack 7, and the heating wire b 11 can heat the mixed material inside the mixing rack 7. The heating wire b 11 is located inside the outer shell 10. An inner shell 9 is installed inside the mixing tank 4, and a heating wire a 8 is installed on the inner shell 9. The heating wire a 8 can heat the mixed material inside the inner side of the inner shell 9.
[0022] Specifically, a material pump 2 is installed at the top end of the barrel 1. Different raw materials are contained in the two barrels 1. The material pump 2 extracts the raw materials in the barrel 1 and transports them into the feeding pipe 3. The material pump 2 communicates with the mixing rack 7 through the feeding pipe 3.
[0023] Specifically, the stirring rod a13 is located below the partition plate 19, and the partition plate 19 can play a separating effect. The partition plate 19 is located below the stirring rod b16.
[0024] Specifically, the stirring shaft 15 is provided with a vertical groove 17, and the vertical groove 17 provided in the stirring shaft 15 facilitates the discharge of materials. The stirring shaft 15 is provided with a groove 18.
[0025] Specifically, the groove 18 is connected to the vertical groove 17, and the mixture is conveyed into the vertical groove 17 through the groove 18. The stirring shaft 15 communicates with the discharge pipe 5, and the mixture in the vertical groove 17 of the stirring shaft 15 is conveyed into the discharge pipe 5.
[0026] Specifically, the outer shell 10 is installed outside the mixing frame 7, the outer shell 10 wraps outside the heating wire b11, and the outer shell 10 is located inside the inner shell 9.
[0027] Embodiment 2: Please refer to Figure 3 , the difference between this embodiment and Embodiment 1 is that: a motor 14 is installed at the bottom end of the mixing box 4, and the rotation of the motor 14 drives the connected stirring shaft 15 to rotate. The output end of the motor 14 is fixedly connected to the stirring shaft 15.
[0028] When the present utility model is in use, the material pump 2 is started to extract the raw materials in the material cylinder 1 and send them into the lower part of the mixing frame 7 through the feeding pipe 3, and they are stirred and mixed between the partition plate 19 and the bottom of the mixing box 4 in the mixing frame 7. The rotation of the motor 14 drives the connected stirring shaft 15 to rotate, and the rotation of the stirring shaft 15 drives the upper stirring rod b16 and the lower stirring rod a13 at the lower end to rotate to stir the raw materials. The raw materials below the partition plate 19 are continuously stirred and mixed by the stirring rod a13. During the continuous mixing process, the mixture at the bottom end moves out of the mixing frame 7 along the discharge port 12 provided at the bottom end of the mixing frame 7 and enters between the mixing frame 7 and the inner shell 9. When continuously feeding the materials, the mixture moves upward and enters between the upper end of the mixing box 4 and the partition plate 19 through the feeding port 6 provided at the top end of the mixing frame 7. The continuous rotation of the stirring shaft 15 drives the stirring rod b16 to stir and mix the mixture again. After mixing, the mixture enters the vertical groove 17 through the groove 18 provided in the rotating shaft, and is sent upward through the vertical groove 17 into the discharge pipe 5 for discharging. The mixture can be mixed multiple times by the cooperation of the lower stirring rod a13 and the upper stirring rod b16 in the mixing frame 7, and the mixing effect is good. When the external temperature is relatively low, the heating wire b11 outside the mixing frame 7 generates heat after being powered on, and the generated heat is transferred inward, which can heat the mixture inside the mixing frame 7. The rotation of the stirring shaft 15 drives the stirring rod to rotate, which can make the mixture fully contact with the mixing frame 7 for heating. Moreover, a heating wire a8 is installed on the inner shell 9 inside the mixing box 4. When the mixture moves upward along the gap between the inner shell 9 and the mixing frame 7 after moving out of the mixing frame 7, the heat generated after the heating wire a8 is powered on can heat the mixture again to make it reach the set temperature, avoiding the influence of low temperature on foaming.
[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.
[0030] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A uniform mixing device for a polyurethane foaming machine, comprising a barrel (1) and a pump (2), characterized in that: The material pump (2) is provided with a feeding pipe (3), the feeding pipe (3) is provided with a mixing frame (7), the mixing frame (7) is provided inside a mixing box (4), a stirring shaft (15) is rotatably connected inside the mixing box (4), the stirring shaft (15) is connected to a discharge pipe (5) via a rotary joint, a stirring rod b (16) is provided on the stirring shaft (15), a partition (19) is provided inside the mixing frame (7), a stirring rod a (13) is provided below the stirring shaft (15), a feeding port (6) is provided at the top end of the mixing frame (7), a discharge port (12) is provided at the bottom end of the mixing frame (7), a heating wire b (11) is connected around the outside of the mixing frame (7), the heating wire b (11) is located on the inner side of an outer shell (10), an inner shell (9) is provided inside the mixing box (4), and a heating wire a (8) is provided on the inner shell (9).
2. The uniform mixing device of a polyurethane foaming machine according to claim 1, characterized in that: A material pump (2) is installed at the top end of the material barrel (1), and the material pump (2) is communicated with the mixing frame (7) through a material feeding pipe (3).
3. The uniform mixing device of a polyurethane foaming machine according to claim 1, characterized in that: A motor (14) is installed at the bottom end of the mixing box (4), and a stirring shaft (15) is fixedly connected to the output end of the motor (14).
4. The uniform mixing device of a polyurethane foaming machine according to claim 1, characterized in that: The stirring rod a (13) is located below the partition (19), and the partition (19) is located below the stirring rod b (16).
5. The uniform mixing device of a polyurethane foaming machine according to claim 1, characterized in that: The stirring shaft (15) is provided with a vertical groove (17), and the stirring shaft (15) is provided with a groove (18).
6. The uniform mixing device of the polyurethane foaming machine according to claim 5, characterized in that: The groove (18) is connected to the vertical groove (17), and the stirring shaft (15) is interconnected with the discharge pipe (5).
7. The uniform mixing device of a polyurethane foaming machine according to claim 1, characterized in that: The outer shell (10) is installed on the outside of the mixing frame (7), and the outer shell (10) is located on the inside of the inner shell (9).