Polyurethane foaming mixing device
By introducing a lifting and lowering stirring head and a downward-sloping discharge pipe into the polyurethane foaming device, the problem of uneven foaming was solved, achieving uniform foaming of the mixture and improving the foaming quality.
Patent Information
- Application Number
- CN202520306322.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-25
AI Technical Summary
Traditional polyurethane foaming equipment is prone to problems such as uneven foaming and inconsistent strength during the mixing process.
A polyurethane foam mixing device including a barrel, a lifting component, and a drive component was designed. The mixing and stirring are carried out by the lifting of the stirring head and the downwardly positioned discharge pipe to ensure the uniformity of the mixture.
It achieves uniform foaming of the mixture, improving foaming quality and consistency.
Smart Images
Figure CN223763614U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of foaming equipment technology, and more particularly to a polyurethane foam mixing device. Background Technology
[0002] Polyurethane foam composite materials are widely used in shoe soles, seat / chair cushions, mats, golf balls, and other fields due to their excellent softness and comfort. In the preparation of these foam composite materials, foaming is a crucial process. Taking a raw material selection method using elastomer PBT and polypropylene oxide as an example, these raw materials are fed into a foaming device, where they are foamed under high temperature and pressure under the action of plasticizers and foaming agents. Traditional foaming devices are simply foaming boxes without measures to ensure uniform mixing of the materials within the foaming box, often resulting in uneven foaming and inconsistent strength. Utility Model Content
[0003] To address the aforementioned problems, this application provides a polyurethane foam mixing apparatus, comprising:
[0004] The barrel body is equipped with a feed pipe assembly, and the barrel body is equipped with a heating device;
[0005] The lifting assembly includes a solid feed pipe and a stirring head;
[0006] The solid feed pipe is slidably connected to the top of the barrel, sealed at the bottom, and has multiple discharge pipe sections on the side wall;
[0007] The stirring head is rotatably connected to the solid feed pipe and is externally connected to a first motor;
[0008] The drive assembly is provided in multiple groups, and each drive assembly includes a connecting block, a second motor, a screw, and a guide rod;
[0009] The connecting block is sleeved and fixed to the outer wall of the solid feed pipe;
[0010] The second motor is installed in the barrel body;
[0011] One end of the screw is installed on the drive end of the second motor, and the other end is threaded through and connected to the connecting block.
[0012] The guide rod is installed at one end on the barrel body and at the other end through the connecting block.
[0013] Furthermore, the discharge pipe is arranged at an angle downwards, so that the output end of the discharge pipe faces the bottom of the barrel.
[0014] Furthermore, multiple discharge pipe sections are arranged circumferentially on the outer wall of the solid feed pipe.
[0015] Furthermore, a cover is movably installed at the top of the barrel for sealing or opening the barrel. The bottom end of the cover has a raised edge that matches the inner diameter of the barrel. The cover is slidably connected through the solid feed pipe.
[0016] Furthermore, the solid feed tube includes an inner rod and an outer tube; the outer tube is fitted onto the outside of the inner rod, leaving a space between the outer tube and the inner rod.
[0017] Furthermore, multiple sets of the drive components are arranged along the circumference of the barrel on the outer wall of the barrel.
[0018] Furthermore, the connecting block includes a ring portion and an extension plate portion;
[0019] The ring portion is fitted and fixed to the outer wall of the section of the solid feed pipe that protrudes from the barrel body, and one end of the extension plate portion is fixed to the outer wall of the ring portion.
[0020] Furthermore, the cover is provided with a liquid inlet pipe assembly and an air inlet pipe; the liquid inlet pipe assembly includes a first feed pipe, a second feed pipe and a third feed pipe, which are used for feeding polypropylene oxide, plasticizer and foaming agent respectively, and the air inlet pipe is used for feeding nitrogen.
[0021] Furthermore, the stirring head includes a rotating part, a first folding plate part, and a second folding plate part;
[0022] The rotating part has one end passing through the inner rod and connected to the first motor on the outside;
[0023] The first folding plate extends obliquely upward, with one end disposed along the circumference of the rotating part on the side wall near the other end of the rotating part; the first included angle between the extending direction of the first folding plate and the axial direction of the rotating part is 60~90°.
[0024] The second folding plate is fixed to the other end of the first folding plate and is not parallel to the first folding plate.
[0025] Compared with the prior art, the beneficial effects of this utility model are:
[0026] This application utilizes the stirring head, which moves up and down with the second motor, to ensure that the mixture is evenly stirred from top to bottom, thus promoting uniform foaming. Furthermore, the downward-sloping discharge pipe further turbulents the mixture as it moves up and down with the second motor. Attached Figure Description
[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of the internal structure of a polyurethane foam mixing device according to an embodiment of this application;
[0029] Figure 2 This is a three-dimensional structural diagram of a polyurethane foam mixing device according to an embodiment of this application;
[0030] Figure 3 This is a schematic diagram of the structure of a drive component assembly block of a polyurethane foam mixing device according to an embodiment of this application;
[0031] Figure 4 This is a schematic diagram of the lifting assembly of a polyurethane foam mixing device according to an embodiment of this application;
[0032] Figure 5 This is a top view of the liquid inlet pipe assembly, air inlet pipe, and solid feed pipe provided on the cover of a polyurethane foam mixing device according to an embodiment of this application.
[0033] Figure label:
[0034] 10. Barrel body; 11. Lid; 110. Rim; 110. First feed pipe; 111. Second feed pipe; 112. Third feed pipe; 12. Mounting block; 13. Heating jacket;
[0035] 20. Solid feed pipe; 200. Outer pipe; 201. Inner rod; 202. Containing space; 21. Stirring head; 210. Rotating part; 211. First folding plate part; 212. Second folding plate part; 22. Discharge pipe part; 23. First motor;
[0036] 30. Connecting block; 300. Loop section; 301. Extension plate section; 32. Screw; 33. Guide rod; 31. Second motor. Detailed Implementation
[0037] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.
[0038] In the description of this utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0040] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0042] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0043] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0044] This utility model embodiment provides a polyurethane foam mixing device. Please refer to [link / reference]. Figures 1-5 The polyurethane foam mixing device includes a barrel 10, a lifting assembly, and a drive assembly.
[0045] Specifically, taking the raw materials of the foaming composition as polypropylene oxide and PBT as an example:
[0046] A barrel 10, used for mixing the foaming composition, has an open top. A cover 11 is movably installed at the open end of the barrel 10 for sealing or opening the barrel 10. The bottom end of the cover has a circumferential flange 110 that matches the inner diameter of the barrel, with the outer wall of the flange fitting against the inner wall of the barrel. An inlet pipe assembly and an air inlet pipe 113 are provided at the cover 11. The inlet pipe assembly consists of a first inlet pipe 110, a second inlet pipe 111, and a third inlet pipe 112, used for feeding polypropylene oxide, plasticizer, and foaming agent, respectively. The air inlet pipe 113 is used for introducing nitrogen. A mounting block 12 is provided on the outer wall of the barrel. A heating jacket 13 is provided on the side wall of the barrel.
[0047] The lifting assembly includes a solid feed pipe 20 and a stirring head 21. The solid feed pipe 20 slides up and down along the axial direction of the barrel 10, causing the stirring head 21 to slide in the same direction.
[0048] A solid feed pipe 20 is open at the top and closed at the bottom. The input end of the solid feed pipe passes through and is slidably connected to the cover 11, while the output end extends into the barrel 10. The solid feed pipe 20 includes an inner rod 201 and an outer tube 200. The outer tube 200 is fitted over the inner rod 201, leaving a receiving space 202 between the inner rod 201 and the outer tube 200. Multiple discharge pipe sections 22 are provided circumferentially on the outer wall of the outer tube for feeding the elastomer PBT into the barrel. The elastomer PBT entering the solid feed pipe 20 flows through the receiving space 202 to the discharge pipe sections 22. Preferably, the multiple discharge pipe sections 22 are evenly spaced along the circumference of the solid feed pipe 20 on the outer wall of the solid feed pipe; each discharge pipe section 22 is angled downwards, with its output end facing obliquely towards the bottom of the barrel 10. When the solid feed pipe 20 has finished feeding, the open end of the solid feed pipe 20 can be sealed by installing a cap.
[0049] Polypropylene oxide enters the barrel through the first feed pipe 110, plasticizer enters the barrel through the second feed pipe 111, foaming agent enters the barrel through the third feed pipe 112, and elastomer PBT enters the barrel through the solid feed pipe 20, forming a mixture in the barrel.
[0050] A stirring head 21, located below the solid feed pipe 20, includes a rotating part 210, a first folding plate part 211, and a second folding plate part 212. One end of the rotating part passes through the inner rod 201 and is externally connected to a first motor 23. The first folding plate part 211 extends obliquely upward, with one end circumferentially disposed on the side wall near the other end of the rotating part. The first angle between the extending direction of the first folding plate part and the axial direction of the rotating part is 60~90°. The second folding plate part 212 is fixed to the other end of the first folding plate part and is not parallel to the first folding plate part 211. The stirring head 21 stirs the mixture in the tank.
[0051] The drive assembly comprises multiple sets, each including a connecting block 30, a second motor 31, a screw 32, and a guide rod 33. The connecting block 30 includes a collar portion 300 and an extension plate portion 301. The collar portion 300 is fitted and fixed to the outer wall of the solid feed pipe section exposed above the cover 11, and one end of the extension plate portion is fixed to the outer wall of the collar portion. The second motor 31 is mounted on the mounting block 12. One end of the screw is mounted on the drive end of the second motor 31, and the other end of the screw extends axially along the barrel body to penetrate the extension plate portion 301 and is threadedly connected to it. The second motor 31 drives the screw 32 to rotate clockwise / counterclockwise, causing the connecting block 30 to move upward / downward along the barrel body axially.
[0052] Preferably, a plurality of mounting blocks 12 are evenly spaced along the circumference of the outer side of the barrel, and each mounting block 12 is connected to the drive assembly.
[0053] Polypropylene oxide, plasticizer, and PBT elastomer are all fed into the barrel 10. The mixture inside the barrel is heated by the heating jacket 13, and the mixture is disturbed by the downward movement of the solid feed pipe 20 and the downward-facing discharge pipe 22.
[0054] Based on the above embodiments, the working principle of this application is as follows:
[0055] A nitrogen atmosphere is maintained inside the barrel. Polypropylene oxide, plasticizer, and PBT elastomer all enter the barrel 10 through their respective feed pipes. The mixture inside the barrel 10 is heated by the heating jacket 13. The first motor 23 and the second motor 31 are started, and the mixing head 21 rotates and the discharge pipe 22 agitates the mixture. Then, a foaming agent is added, causing the mixture to foam during the agitation.
[0056] Based on the above embodiments, the advantages of this application are:
[0057] By raising and lowering the stirring head 21 along with the second motor 31, the mixture can be evenly stirred from top to bottom, which is beneficial to the uniform foaming of the mixture. Furthermore, by setting the discharge pipe 22 at an angle downward, the mixture is further turbulent during the raising and lowering of the discharge pipe 22 along with the second motor 31.
Claims
1. A polyurethane foaming mixing device characterized by, The utility model relates to a solid -liquid separation type polypropylene glycol production device, including: The barrel body is equipped with the feed pipe group, and the barrel body is installed with heating device; Lifting assembly includes solid feed pipe and stirring head; The solid feed pipe is slidably connected with the top end of the barrel body, the bottom end is sealed, the side wall is provided with a plurality of discharge pipe parts; The stirring head is rotatably connected to the solid feed pipe and externally connected to the first motor; Each drive assembly includes a connecting block, a second motor, a screw rod and a guide rod; The connecting block is fixedly sleeved on the outer wall of the solid feed pipe; The second motor is installed on the barrel body; One end of the screw rod is installed on the driving end of the second motor, and the other end is threadedly connected to the connecting block; One end of the guide rod is installed on the barrel body, and the other end penetrates the connecting block.
2. The polyurethane foaming mixing device of claim 1, wherein: The discharge pipe part is inclined downward, and the output end of the discharge pipe part is arranged towards the bottom end of the barrel body.
3. The polyurethane foaming mixing device of claim 2, wherein: A plurality of discharge pipe parts are arranged on the outer wall of the solid feed pipe along the circumference of the solid feed pipe.
4. The polyurethane foaming mixing device of claim 3, wherein: The top end of the barrel body is movably installed with a cover body for sealing or opening the barrel body, the bottom end of the cover body is provided with a convex edge matching the inner diameter of the barrel body along the circumference thereof, and the cover body is slidably connected by the solid feed pipe.
5. The polyurethane foaming mixing device of claim 3, wherein: The solid feed pipe includes an inner rod and an outer pipe; the outer pipe is matched and sleeved on the outer side of the inner rod, so that a containing space is left between the outer pipe and the inner rod.
6. The polyurethane foaming mixing device of claim 3, wherein: A plurality of drive assemblies are arranged on the outer wall of the barrel body along the circumference of the barrel body.
7. The polyurethane foaming mixing device of claim 6, wherein: The connecting block includes a ring part and an extension plate part; The ring part is fixedly sleeved on the pipe segment of the solid feed pipe exposed to the barrel body, and one end of the extension plate part is fixed to the outer wall of the ring part.
8. The polyurethane foaming mixing device of claim 4, wherein: The cover body is provided with a liquid inlet pipe group and an air inlet pipe; the liquid inlet pipe group includes a first feed pipe, a second feed pipe and a third feed pipe for feeding polypropylene glycol, plasticizer and foaming agent respectively, and the air inlet pipe is used for feeding nitrogen.
9. The polyurethane foaming mixing device of claim 5, wherein: The stirring head includes a rotating part, a first folding plate part and a second folding plate part; One end of the rotating part penetrates the inner rod and is externally connected to the first motor; The first folding plate part extends obliquely upward, one end of which is arranged on the side wall close to the other end of the rotating part along the circumference of the rotating part; the first folding plate part extends in a direction forming a first included angle of 60-90° with the axial direction of the rotating part; The second folding plate part is fixed to the other end of the first folding plate part and is arranged non-parallel to the first folding plate part.