Pre-foaming device for foaming polystyrene foam board
Through drum-type animal material turning and microwave heating, the problem of uneven heating of polystyrene foam board foam raw materials is solved, achieving uniform heating and efficient production.
Patent Information
- Application Number
- CN202421992349.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-08-16
AI Technical Summary
In the prior art, the polystyrene foam board foaming raw materials have a problem of uneven heating during the preheating process, especially the raw materials around the bottom cannot come into contact with the spiral blades, forming a stirring dead corner, resulting in uneven heating.
The roller-type rolling and turning animal materials is adopted. Through the design of the inner and outer cylinders, the microwave generator and the drive device, the foaming raw materials are evenly turned and heated, and the combination of water and microwaves is used to ensure that all raw materials are evenly heated.
The uniform heating of foamed raw materials is achieved, the preheating effect is improved, and the production efficiency is improved through the automatic discharge port.
Smart Images
Figure CN223058211U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of polystyrene foam board production, in particular to a pre-foaming device for polystyrene foam board foaming. Background Technique
[0002] Polystyrene (EPS) foam board is a foam material with a closed-cell structure made mainly from polystyrene resin and foamed by a foaming agent. It has excellent thermal insulation performance, low density, light weight, certain compressive strength, and good sound insulation effect. Therefore, it has a large demand in the fields of building insulation, packaging materials, cold storage projects, etc.
[0003] Before the polystyrene (EPS) foam board product is formed, it is necessary to preheat and pre-expand the EPS foaming material so that the bulk density of the molded product can be better controlled within a lower range. Pre-expansion can reduce the density gradient during molding and enable uniform expansion and molding. During the pre-expansion process, the beads containing the foaming agent are slowly heated by steam. The foaming agent inside the beads is vaporized by heat to generate pressure, causing the beads to expand and form complementary and connected pores (closed pores). At the same time, the steam also penetrates into the expanded pores, so that the vast majority of the foaming gas remains inside the pores, thereby increasing the total pressure inside the pores. The foaming agent has no time to escape from the pores, causing the polymer to be stretched into a rubber state, and its strength is sufficient to balance the internal pressure. The polymer is extended and the beads are pre-expanded.
[0004] When preheating the EPS foaming raw material, it is necessary to stir the raw material to increase the uniformity of heat absorption of the raw material. In the prior art, a spiral blade is usually used for preheating and stirring treatment of the EPS foaming raw material. However, the spiral blade can only stir the middle part of the piled-up foaming raw material, and the raw material located around the bottom cannot directly contact the spiral blade, forming a stirring dead angle, resulting in uneven heating. Content of the Utility Model
[0005] The purpose of the utility model is to provide a pre-foaming device for polystyrene foam board foaming, which can tumble and turn the materials in a drum type, so that all the foaming raw materials can be overturned, increasing the uniformity of heat absorption of the foaming raw materials and improving the preheating effect.
[0006] To achieve the above object, the present utility model provides the following technical solutions: A polystyrene foam board foaming pre-foaming device, comprising an inner cylinder and an outer cylinder sleeved outside the inner cylinder. A microwave generator is provided on the outer surface of the outer cylinder, and a driving device for driving the inner cylinder to rotate is further included; the barrel openings on both sides of the inner cylinder are sealed by inner cylinder sealing plates, and a support cylinder with one end open is coaxially arranged inside the inner cylinder. A feed inlet is provided on the barrel wall of the support cylinder; an outer cylinder sealing plate is provided on one side of the outer cylinder close to the open end of the support cylinder; a feed pipe and a water inlet pipe passing through the outer cylinder sealing plate and extending into the interior of the support cylinder are provided on the outer cylinder sealing plate; a sealing cylinder is arranged between the outer cylinder and the inner cylinder, and the sealing cylinder is close to the outer side of the inner cylinder and is used to seal the second discharge port. A driving component for driving the sealing cylinder to move away from or close to the second discharge port is further included; a second discharge port is provided on the inner cylinder wall of the inner cylinder, and a first discharge port corresponding to the second discharge port is provided at the bottom of the outer cylinder wall of the outer cylinder.
[0007] Preferably, the driving device includes a driving motor and a speed reducer cooperating with the driving motor, and the driving shaft of the speed reducer is fixedly connected to the inner cylinder coaxially.
[0008] Preferably, the first discharge port is communicated with a discharge pipe, and the discharge pipe is connected to a pneumatic discharge valve.
[0009] Preferably, an ear plate portion is provided at the edge of one side of the sealing cylinder. The driving component includes a first push rod and a second push rod arranged on both sides of the ear plate portion. The extending directions of the first push rod and the second push rod are the same as the extending direction of the axes of the inner cylinder and the outer cylinder, and a first electric push rod and a second electric push rod for driving the first push rod and the second push rod to move respectively are further included.
[0010] Preferably, a plurality of convex pieces are evenly arranged on the inner side of the inner cylinder wall corresponding to the inner cylinder.
[0011] Compared with the prior art, the beneficial effects of the present utility model are:
[0012] 1. In the present utility model, the EPS foaming raw materials are tumbled and preheated in a rolling manner, so that all the foaming raw materials can be overturned, increasing the heat uniformity of the foaming raw materials and improving the preheating effect.
[0013] 2. In the present utility model, the inner cylinder for accommodating the EPS foaming raw materials is provided with a discharge port that can be automatically opened and closed, which can quickly discharge the preheated raw materials, increasing the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of the present utility model Figure 1 ;
[0015] Figure 2Structural schematic of the present utility model Figure 2 ;
[0016] Figure 3 Exploded view of the present utility model;
[0017] Figure 4 Structural schematic of the outer cylinder of the present utility model Figure 1 ;
[0018] Figure 5 Structural schematic of the outer cylinder of the present utility model Figure 2 ;
[0019] Figure 6 Structural schematic diagram of the inner cylinder of the present utility model;
[0020] Figure 7 Internal structural schematic diagram of the inner cylinder of the present utility model;
[0021] Figure 8 Planar structural schematic diagram of the inner cylinder of the present utility model
[0022] Figure 9 Structural schematic diagram of the sealing cylinder of the present utility model.
[0023] In the figure:
[0024] 1 - outer cylinder, 11 - outer cylinder wall, 12 - outer cylinder sealing plate, 13 - support seat, 14 - first discharge port, 15 - discharge pipe, 16 - feed pipe, 17 - water inlet pipe,
[0025] 2 - inner cylinder, 21 - inner cylinder wall, 211 - second discharge port, 22 - inner cylinder sealing plate, 23 - support cylinder, 231 - feed port, 24 - tab,
[0026] 3 - sealing cylinder, 31 - ear plate part,
[0027] 4 - first push rod, 41 - first connecting plate,
[0028] 5 - second push rod, 51 - second connecting plate,
[0029] 6 - first electric push rod,
[0030] 7 - second electric push rod,
[0031] 81 - drive motor, 82 - speed reducer. Specific embodiments
[0032] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0033] As Figures 1 to 9 shown, a pre-foaming device for polystyrene foam board foaming includes an inner cylinder 2 and an outer cylinder 1 sleeved outside the inner cylinder 2. The inner cylinder 2 and the outer cylinder 1 are coaxially arranged and the cylinder axis is horizontally arranged. A microwave generator 9 is provided on the outer surface of the outer cylinder 1, and a driving device is further included for driving the inner cylinder 2 to rotate.
[0034] The openings at both sides of the inner cylinder 2 are blocked by inner cylinder sealing plates 22. A support cylinder 23 with one end open is coaxially arranged inside the inner cylinder 2. A plurality of feed ports 231 are evenly arranged on the cylinder wall of the support cylinder 23. An outer cylinder sealing plate 12 is provided on one side of the outer cylinder 1 close to the open end of the support cylinder 23. A feed pipe 16 and a water inlet pipe 17 are provided on the outer cylinder sealing plate 12, passing through the outer cylinder sealing plate 12 and extending into the interior of the support cylinder 23.
[0035] A sealing cylinder 3 is arranged between the outer cylinder 1 and the inner cylinder 2. The sealing cylinder 3 is close to the outer side of the inner cylinder 2 and is used to seal the second discharge port 211. A driving assembly is further included for driving the sealing cylinder 3 to move away from or close to the second discharge port 31.
[0036] A second discharge port 211 is arranged on the inner cylinder wall 21 of the inner cylinder 2, and a first discharge port 14 corresponding to the second discharge port 211 is arranged at the bottom of the outer cylinder wall 11 of the outer cylinder 1.
[0037] The EPS foaming raw material is added into the support cylinder 23 through the feed pipe 16, and water is added into the support cylinder 23 through the water inlet pipe 17. The EPS foaming raw material and water enter the inner cylinder 2 simultaneously through the feed ports 231 on the support cylinder 23, and the EPS foaming raw material and water are heated by the microwave generator 9. The EPS foaming raw material and water are injected in a certain proportion. The water molecules interact with the microwave electromagnetic field, converting the electromagnetic energy into heat energy, resulting in an increase in water temperature. The EPS foaming raw material is wrapped by the water molecules. While the water temperature rises, heat energy will be transferred to the material, and the foaming agent inside the material expands due to heat.
[0038] Preferably, a pressure relief valve can be connected and arranged on the water inlet pipe 17 according to actual needs to balance the air pressure inside the inner cylinder 2, so that the excess evaporated water is discharged through the pressure relief valve.
[0039] Specifically in this embodiment, as Figure 2As shown, the outer cylinder 1 is fixed to the pre-foaming production site through the support base 13. The driving device includes a driving motor 81 and a speed reducer 82 that cooperates with the driving motor 81. The driving shaft of the speed reducer 82 is fixedly connected coaxially with the inner cylinder 2.
[0040] Preferably, the feed pipe 16 is connected in cooperation with a storage bin for storing EPS foaming raw materials. The storage bin for storing EPS foaming raw materials can be arranged above the feed pipe 16. The storage bin and the feed pipe 16 can be connected through an electromagnetic flap valve for transition. The opening time of the electromagnetic flap valve is adjusted according to the actual pre-foaming needs to achieve the function of automatic quantitative feeding.
[0041] In this embodiment, the support cylinder 23 functions to add materials and water, and at the same time enhances the connection strength between the inner cylinder sealing plates 22 on both sides of the inner cylinder 2, improving the overall stability of the inner cylinder 2.
[0042] In this embodiment, when the sealing cylinder 3 is attached to the outside of the inner cylinder 2, the sealing cylinder 3 seals the second discharge port 211. The EPS foaming raw materials located inside the content 2 cannot be discharged from the inner cylinder 2 through the second discharge port 211. When the sealing cylinder 3 is adjusted away from the second discharge port 211 and the second discharge port 211 coincides with the first discharge port 14, the pre-heated EPS foaming raw materials are discharged from the inner cylinder 2 through the second discharge port 211 and the first discharge port 14 respectively.
[0043] Preferably, the first discharge port 14 is connected and provided with a discharge pipe 15. A pneumatic discharge valve (not shown in the figure) can be connected to the discharge pipe 15 according to actual needs to facilitate the rapid discharge of the pre-heated EPS foaming raw materials.
[0044] As a specific implementation manner, an ear plate portion 31 is provided at the edge of one side of the sealing cylinder 3. The driving assembly includes a first push rod 4 and a second push rod 5 arranged on both sides of the ear plate portion 31. The extending directions of the first push rod 4 and the second push rod 5 are the same as the extending direction of the axes of the inner cylinder 2 and the outer cylinder 1. It also includes a first electric push rod 6 and a second electric push rod 7 respectively used to drive the first push rod 4 and the second push rod 5 to move. In this embodiment, the first push rod 4 is arranged on the side close to the outer cylinder sealing plate 12. An avoidance hole 18 for the first push rod 4 to pass through is provided on the outer cylinder sealing plate 12. The first electric push rod 6 and the second electric push rod 7 are fixed to the external ground through the support base. Preferably, a plurality of the first push rods 4 and the second push rods 5 are both used and are evenly arranged along the circumferential direction of the ear plate portion 31. The corresponding plurality of first push rods 4 are connected through a first connecting plate 41 for transition. The driving arm of the first electric push rod 6 is fixedly connected to the first connecting plate 41; the corresponding plurality of the second push rods 5 are connected through a second connecting plate 51 for transition. The driving arm of the second electric push rod 7 is fixedly connected to the second connecting plate 51.
[0045] It should be noted that in this embodiment, the first push rod 4 and the second push rod 5 are not directly connected to the ear plate portion 31. By pushing the ear plate portion 31 with the first push rod 4, the sealing cylinder 3 is moved away from the second discharge port 211, so that the second discharge port 211 is in an open state. By pushing the ear plate portion 31 with the second push rod 5, the sealing cylinder 3 is moved closer to the second discharge port 211, so that the second discharge port 211 is in a closed state. The fact that the first push rod 4 and the second push rod 5 are not directly connected to the ear plate portion 31 allows the sealing cylinder 3 to freely rotate with the inner cylinder 2.
[0046] Furthermore, as Figure 7 and Figure 8 shown, a plurality of tabs 24 are uniformly arranged on the inner side of the inner cylinder wall 21 corresponding to the inner cylinder 2. Through the tabs 24, the tumbling amplitude of the EPS foaming raw material inside the inner cylinder 2 can be increased, the heat uniformity of the EPS foaming raw material can be increased, and the preheating effect can be improved.
[0047] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention 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 included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. A pre-foaming device for polystyrene foam board, characterized in that: It includes an inner cylinder and an outer cylinder sleeved outside the inner cylinder. A microwave generator is provided on the outer surface of the outer cylinder. It also includes a driving device for driving the inner cylinder to rotate. The openings at both sides of the inner cylinder are blocked by inner cylinder sealing plates. Inside the inner cylinder, a support cylinder with one open end is coaxially arranged. A feed inlet is provided on the cylinder wall of the support cylinder. An outer cylinder sealing plate is provided on one side of the outer cylinder close to the open end of the support cylinder. A feed pipe and a water inlet pipe that pass through the outer cylinder sealing plate and extend into the interior of the support cylinder are provided on the outer cylinder sealing plate. A sealing cylinder is provided between the outer cylinder and the inner cylinder. The sealing cylinder is close to the outside of the inner cylinder and is used to seal the second discharge port. It also includes a driving assembly for driving the sealing cylinder to move away from or close to the second discharge port. A second discharge port is provided on the inner cylinder wall of the inner cylinder. A first discharge port corresponding to the second discharge port is provided at the bottom of the outer cylinder wall of the outer cylinder.
2. The pre-foaming device for foaming polystyrene foam board according to claim 1, characterized in that: The driving device includes a driving motor and a speed reducer matched with the driving motor. The driving shaft of the speed reducer is fixedly connected to the inner cylinder coaxially.
3. A pre-foaming device for foaming polystyrene foam board according to claim 1, characterized in that: The first discharge port is communicated with a discharge pipe, and the discharge pipe is connected to a pneumatic discharge valve.
4. A polystyrene foam board foaming pre-foaming device according to claim 1, characterized in that: An ear plate part is provided at the edge of one side of the sealing cylinder. The driving assembly includes a first push rod and a second push rod arranged on both sides of the ear plate part. The extending directions of the first push rod and the second push rod are consistent with the extending direction of the axes of the inner cylinder and the outer cylinder. It also includes a first electric push rod and a second electric push rod respectively used for driving the first push rod and the second push rod to move.
5. The pre-foaming device for foaming polystyrene foam board according to claim 1, wherein: A plurality of convex pieces are evenly arranged on the inner side of the inner cylinder wall corresponding to the inner cylinder.