EPS pre-foaming machine
By designing an EPS pre-expansion machine with a rotatable foaming cylinder and an internal stirring ring, the problems of uneven heating and accumulation of EPS granules were solved, achieving uniform heating and high-quality pre-expansion effect.
Patent Information
- Application Number
- CN202423218296.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In existing pre-expansion machines, uneven heating of EPS granules leads to different degrees of expansion, affecting the pre-expansion effect and easily causing granule caking, thus reducing the quality of the finished product.
Designed as a rotatable foaming cylinder, it is equipped with an internal stirring ring and stirring blades. Combined with a heating component and hot air inlet, it achieves uniform mixing and heating of raw materials through rotation and stirring.
This method achieves uniform heating of EPS granules, avoids accumulation and caking, and improves pre-expansion effect and finished product quality.
Smart Images
Figure CN223735199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of EPS production technology, and in particular to an EPS pre-ejection machine. Background Technology
[0002] Pre-expansion machines are used to pre-expand EPS granules, causing the EPS to expand and increase in size. In existing pre-expansion machines, the EPS granules accumulate inside the pre-expansion cylinder during processing, while high-temperature steam contacts the EPS granules from the bottom of the cylinder. This results in differences in the order in which the EPS granules come into contact with the high-temperature steam, leading to varying degrees of expansion of the EPS granules inside the pre-expansion cylinder. This significantly affects the pre-expansion effect. Furthermore, this accumulation method causes the EPS granules on the upper side to squeeze the EPS granules on the lower side, which can easily lead to the lower EPS granules caking and reduce the quality of the finished product. Utility Model Content
[0003] The purpose of this invention is to provide an EPS pre-expansion machine to solve the problem in the prior art where uneven heating leads to different degrees of expansion, affecting the pre-expansion effect.
[0004] To solve the above problems, the EPS pre-expansion machine involved in this utility model adopts the following technical solution:
[0005] The EPS pre-expansion machine includes a base, on which a foaming cylinder is rotatably mounted. A heating component is installed inside the wall of the foaming cylinder. The foaming cylinder has an inlet and an outlet. Rotating shafts are connected to both ends of the foaming cylinder, and a hot air inlet is provided on at least one of the rotating shafts. The foaming cylinder is formed by two detachable and interlocking upper and lower cylinders. A stirring ring is coaxially mounted on the inner wall of the foaming cylinder to prevent rotation. A radially extending stirring blade is fixed inside the stirring ring. There are two or more stirring rings, which are arranged at intervals along the axial direction of the foaming cylinder. The foaming cylinder is also provided with a positioning structure that positions and cooperates with each stirring ring in the axial and circumferential directions.
[0006] In a preferred embodiment, the positioning structure includes a positioning ring groove disposed on the inner side wall of the foaming cylinder, wherein the depth of the positioning ring groove is less than the thickness of the stirring ring, and the bottom diameter of the positioning ring groove is consistent with the outer diameter of the stirring ring.
[0007] In a preferred embodiment, the positioning structure further includes a positioning hole disposed at the bottom of the positioning ring groove, the positioning hole extending radially along the positioning ring groove, and a positioning post for insertion into the positioning hole is provided on the outer ring surface of the stirring ring.
[0008] In a preferred embodiment, there are two or more positioning posts, which are evenly distributed around the stirring ring at axial intervals.
[0009] In a preferred embodiment, the interlocking surfaces between the upper and lower cylinders have flanges along their outer edges, and the two are locked together by bolts and nuts.
[0010] In a preferred embodiment, slits are provided in the side walls of both the upper and lower cylinders, and the heating assembly includes heating wires arranged in a serpentine pattern within the slits.
[0011] In a preferred embodiment, a heat exchanger is connected to the air inlet via an adapter, and a blower is connected to the heat exchanger. The blower is equipped with a drive motor.
[0012] As described above, this utility model has the following beneficial effects: Compared with the prior art, the pre-expansion machine involved in this utility model, in actual use, by designing the pre-expansion cylinder to be rotating, after the EPS raw material is fed into the foaming cylinder, the rotation of the pre-expansion cylinder ensures that the raw material is always in a state of moving and turning at the bottom of the foaming cylinder, avoiding material accumulation. Furthermore, through the setting of the stirring rod, when the foaming cylinder rotates, the stirring rod can always stir and agitate the raw material, further preventing material accumulation. At the same time, the setting of the stirring ring rotating synchronously with the foaming cylinder can effectively avoid the problem in the prior art where gaps exist between the mating surfaces of the stirring blades relative to the foaming cylinder, causing some raw material to get stuck in the gaps; it can also make the material more dispersed, the heating more uniform, ensure the foaming effect, and is easy to operate, with a wide range of applications and strong practicality. The setting of the heating component and hot air inlet can mix and heat the EPS raw material, further ensuring uniform heating and improving the foaming effect. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below:
[0014] Figure 1 This is a schematic diagram of a specific embodiment of the EPS pre-electrode machine of this utility model;
[0015] Figure 2 for Figure 1 A schematic diagram of the internal structure of the cylinder without the upper half;
[0016] Figure 3 This is a half-sectional view of the foaming cylinder in Figure 1.
[0017] Explanation of reference numerals in the attached drawings: 1-Base plate; 2-Column; 3-Upper half-cylinder; 4-Lower half-cylinder; 5-Bolt and nut; 6-Gear motor; 7-Heat exchanger; 8-Blower; 9-Gap; 10-Heating wire; 11-Positioning ring groove; 12-Agitating ring; 13-Agitating rod; 14-Positioning column; 15-Feed inlet; 16-Discharge outlet; 17-Drive motor. Detailed Implementation
[0018] To make the technical objectives, technical solutions, and beneficial effects of this utility model clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model; that is, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown herein can generally be arranged and designed in various different configurations.
[0019] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components. The terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can refer to mechanical or electrical connections, or internal connections between two elements, and can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0021] Specific embodiments of the EPS pre-expansion machine involved in this utility model are as follows: Figures 1 to 3 As shown, the EPS pre-expansion machine includes a base, on which a foaming cylinder is rotatably mounted. The base as a whole includes a bottom plate 1 and two vertical plates arranged on the bottom plate 1 and spaced apart from each other. The foaming cylinder is rotatably mounted between the two vertical plates.
[0022] The foaming cylinder is formed by two detachable and interlocking upper half cylinder 3 and lower half cylinder 4. A right-side circumferential sealing gasket is provided between the interlocking surfaces of the two. In order to ensure the detachable connection between the two, there is an outer edge flange at the interlocking surface between the upper half cylinder 3 and the lower half cylinder 4. The two are locked and fixed by bolts and nuts 5.
[0023] To ensure sealing performance, rotating shafts are coaxially connected to both ends of the lower half-cylinder 4. These rotating shafts are inserted into corresponding columns 2 and supported by bearings. To facilitate relative connection, clearance grooves are provided at the left and right ends of the upper half-cylinder 3 to allow the rotating shafts to pass. A geared motor 6 is driven onto the rotating shaft on the left side, while a hot air inlet communicating with the inner cavity of the foaming cylinder is provided on the rotating shaft on the right side to supply heated air into the foaming cylinder, ensuring uniform heating of the EPS raw materials.
[0024] In order to achieve the foaming and heating of EPS raw materials, a heating component is provided inside the wall of the foaming cylinder. Specifically, a slit 9 is provided in the side wall of both the upper half cylinder 3 and the lower half cylinder 4. The heating component includes heating wires 10 arranged in a serpentine pattern inside the slit 9.
[0025] In addition, a feed inlet 15 is provided on the upper half of the foaming cylinder 3, and a discharge outlet 16 is provided on the lower half of the cylinder 4. Both are equipped with opening and closing control valve plates.
[0026] To further ensure uniform heating of the raw materials, a heat exchanger 7 is connected to the air inlet via an adapter. A blower 8 is connected to the heat exchanger 7, and the blower 8 is equipped with a drive motor 17. The structure of the adapter is consistent with existing technology and will not be described in detail.
[0027] To prevent the raw materials from accumulating and hardening inside the foaming cylinder, a stirring ring 12 is coaxially mounted on the inner wall of the foaming cylinder to prevent rotation. The inner side of the stirring ring 12 is fixed with radially extending stirring blades. There are two or more stirring rings 12, which are arranged at intervals along the axial direction of the foaming cylinder. The foaming cylinder is also provided with a positioning structure that is positioned and matched with each stirring ring 12 in the axial and circumferential directions.
[0028] Specifically, the positioning structure includes a positioning ring groove 11 disposed on the inner wall of the foaming cylinder. The depth of the positioning ring groove 11 is less than the thickness of the stirring ring 12, and the diameter of the bottom surface of the positioning ring groove 11 is consistent with the outer diameter of the stirring ring 12. The positioning structure also includes a positioning hole disposed at the bottom of the positioning ring groove 11, extending radially along the positioning ring groove 11. The outer ring surface of the stirring ring 12 is provided with positioning posts 14 for insertion into the positioning hole. Preferably, there are two positioning posts 14, symmetrically arranged on both radial sides of the stirring ring 12.
[0029] In actual operation, after the EPS raw material is fed into the foaming cylinder, the rotation of the pre-foaming cylinder keeps the raw material in a state of constant movement and tumbling at the bottom of the foaming cylinder, thus preventing the raw material from accumulating. The stirring rod 13 can constantly move and stir the raw material, further preventing the raw material from accumulating. The stirring ring 12 rotates synchronously with the foaming cylinder, which can passively lift the raw material, making the raw material heat more evenly.
[0030] Finally, it should be noted that the above embodiments are only for illustration and not for limiting the technical solutions of this utility model. Any equivalent substitutions and modifications or partial substitutions that do not depart from the spirit and scope of this utility model should be covered within the scope of protection of the claims of this utility model.
Claims
1. An EPS pre-expander characterized by comprising: The base is provided with a rotating foaming cylinder, a heating assembly is arranged in the cylinder wall of the foaming cylinder, an inlet and an outlet are arranged on the foaming cylinder, and rotating shafts are arranged at two ends of the foaming cylinder, wherein a hot air inlet is arranged on at least one of the rotating shafts; the foaming cylinder is formed by a detachable upper half cylinder and a lower half cylinder, a stirring ring is coaxially and fixedly arranged on the inner side wall of the foaming cylinder, radial stirring blades are fixed on the inner side of the stirring ring, there are two or more stirring rings which are arranged along the axial direction of the foaming cylinder, and a positioning structure is arranged on the foaming cylinder and is in axial and circumferential positioning cooperation with each stirring ring.
2. The EPS preformer of claim 1, wherein, The positioning structure comprises a positioning ring groove arranged on the inner side wall of the foaming cylinder, the groove depth of the positioning ring groove is smaller than the ring thickness of the stirring ring, and the groove bottom diameter of the positioning ring groove is consistent with the outer diameter of the stirring ring.
3. The EPS preformer of claim 2, wherein, The positioning structure further comprises a positioning hole arranged on the groove bottom of the positioning ring groove, the positioning hole extends along the radial direction of the positioning ring groove, and the outer ring surface of the stirring ring is provided with a positioning column for being inserted into the positioning hole.
4. The EPS preformer of claim 3, wherein, There are two or more positioning columns which are uniformly distributed along the axial direction of the stirring ring.
5. The EPS preformer of claim 1, wherein, The upper half cylinder and the lower half cylinder are fixedly connected by a flange with an outer edge at the joint surface between the upper half cylinder and the lower half cylinder, and a bolt and a nut.
6. The EPS preformer of claim 1, wherein, The inner side walls of the upper half cylinder and the lower half cylinder are provided with a clamping gap, and the heating assembly comprises a serpentine heating wire arranged in the clamping gap.
7. The EPS preformer of claim 1, wherein, A heat exchanger is connected to the hot air inlet through an adapter, a blower is connected to the heat exchanger, and the blower is provided with a driving motor.