Small device for pre-foaming foam particles
By designing a small foam particle pre-foaming device combining steam generator and fan in the laboratory, the problems of uneven particle size and long maturation time in the prior art are solved, and a more uniform and efficient foam particle pre-foam particle is achieved Foaming improves the foaming quality.
Patent Information
- Application Number
- CN202420638236.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The existing laboratories use foam particles to pre-foam the foam particles, which are uneven in size, are prone to scalding during operation, and the maturation time is too long, resulting in poor secondary foaming processing effect.
A small foam particle pre-foaming device was designed, and steam generation device was used to generate steam, combined with a fan and screen to realize the steam filling in the foaming space and the irregular flutter of particles, remove surface moisture, shorten the maturation time, and improve the development. Bubble uniformity and control.
The uniformity and high quality of foamed particles are achieved, the maturation time is shortened, and the foaming quality of the final product is improved.
Smart Images
Figure CN222135706U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of foam plastic production equipment, in particular to a small foam particle pre-foaming device for laboratory use. Background Art
[0002] In laboratory steam foaming plastic processing, the foamed plastic needs to be pre-foamed with high-temperature steam first, so that the plastic particles expand to a certain extent, then taken out and aged at room temperature until there is no moisture on the surface of the foamed particles, and then secondary processing is carried out according to the needs of later processing.
[0003] The existing laboratory pre-foaming method is to place a steam-permeable mesh box above a large beaker filled with water, heat the beaker to generate steam, and then manually stir the foamable particles in the mesh box to pre-foam, and finally place it at room temperature for natural maturation.
[0004] The existing laboratory foaming method makes the foamed particles uneven in size, which is easy to cause burns during operation and often leads to poor secondary foaming processing effect due to the long ripening time during ripening.
[0005] Based on the above problems, the inventors have conducted in-depth research on the equipment required for laboratory-scale pre-foaming of foam particles, taking into full consideration realistic factors such as uniform foaming and maturation efficiency, in the hope of designing a new pre-foaming device that can solve the above problems. Utility Model Content
[0006] In order to overcome the above problems, the inventors have conducted intensive research and designed a small device for pre-foaming foam particles, in which a steam generating device is provided to generate steam as needed. The fan and the screen cooperate to fill the foaming space with steam for pre-foaming operation. When the pre-foaming operation is about to be completed, the steam generation is stopped, and the subsequent pre-foaming work is completed by the remaining steam in the box. Then, the foaming particles are blown up and down irregularly in the foaming space through the continuous action of the fan, thereby removing the moisture on the surface of the foaming particles, separating the foaming particles that are stuck together due to the presence of surface moisture, completing the maturation operation of the foaming particles, and obtaining a foaming material that is uniformly foamed and easy to control, and effectively shortening the maturation time and improving the foaming quality, thereby completing the utility model.
[0007] Specifically, the purpose of the utility model is to provide a small foam particle pre-foaming device, which includes a closed box body 1 with an upper opening, and an upper cover plate 2 that can be opened or closed freely is arranged at the upper opening of the closed box body 1;
[0008] A screen and a fan 4 are arranged above the interior of the closed box 1.
[0009] A discharge port is provided on the wall of the sealed box 1 away from the fan 4, and a movable baffle 5 is provided at the discharge port;
[0010] The upper cover plate 2, the screen, the wall of the closed box 1 and the baffle 5 together form a foaming space for accommodating the particles 10 to be foamed;
[0011] Inside the closed box 1, water is contained below the foaming space, and a heater 6 capable of heating the water to generate steam is provided below the water surface;
[0012] The fan 4 is located outside the foaming space. The fan 4 promotes the movement of steam, so that the foaming space is filled with steam to perform the particle pre-foaming operation. The fan also blows the pre-foamed particles to make them float and collide in the foaming space to perform the maturation operation.
[0013] The screen includes a horizontal screen 31 and a vertical screen 32.
[0014] The horizontal screen 31 is the bottom surface of the foaming space; the horizontal screen 31 allows steam to pass upward and enter the foaming space, and the horizontal screen 31 also allows water droplets on the pre-foamed particles to pass downward and fall into the water;
[0015] The vertical screen 32 is adjacent to the fan 4 , and the vertical screen 32 allows steam or air to flow laterally into the foaming space under the action of the fan 4 .
[0016] The vertical screen 32 has four sides, the lower side is fixedly connected to the horizontal screen 31 , the upper side is abutted against the upper cover plate 2 in the closed state, and the left and right sides are independently fixedly connected to the wall of the closed box 1 .
[0017] The mesh size of the sieve is 300nm to 500nm.
[0018] Wherein, at the discharge port, a receiving hopper 7 is arranged outside the baffle 5, and the foaming particles blown out from the foaming space are received and collected by the receiving hopper 7.
[0019] Among them, a water injection pipe 8 is arranged on the wall of the closed box 1 between the foaming space and the water surface. Water is injected into the closed box 1 through the water injection pipe 8, and pressure is released to the outside through the water injection pipe 8, so that when the particle pre-foaming operation is performed, the pressure in the closed box 1 is maintained at 1.3-1.7 standard atmospheric pressures.
[0020] The fan 4 is provided with a swing mechanism, through which the fan 4 swings back and forth during operation. The air volume of the fan is 300-400 m3 / min.
[0021] Wherein, the power of the heater 6 is 1800-2000W.
[0022] The sealed box 1 is provided with a fan button 91 electrically connected to the fan, and a heating button 92 electrically connected to the heater 6 .
[0023] The beneficial effects of the utility model include:
[0024] (1) According to the small foam particle pre-foaming device provided by the utility model, a screen is provided in the device, which can prevent the foam particles from escaping and allow steam and air to enter the foaming space, thereby completing the pre-foaming operation of the foam particles in a continuous steam environment;
[0025] (2) According to the small foam particle pre-foaming device provided by the utility model, a screen and a fan are provided in the device, and the foam particles can perform the foaming operation under the blowing of the fan, ensuring that the steam and temperature around the foam particles are uniform, ensuring that the foam particles can be uniformly foamed;
[0026] (3) According to the small foam particle pre-foaming device provided by the utility model, the device can directly perform the aging operation after completing the pre-foaming operation. The fan continuously blows the foamed particles so that the moisture on the surface of the foamed particles can be removed, thereby improving the aging efficiency and further improving the quality of the pre-foamed particles finally obtained. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 A schematic diagram showing the structure of the small foam particle pre-foaming device provided by the utility model when the box is closed and the pre-foaming and aging operations are performed;
[0028] Figure 2 A schematic diagram showing the structure of the small foam particle pre-foaming device provided by the utility model when the box is opened;
[0029] Description of Figure Numbers:
[0030] 1-Sealed box
[0031] 2-Upper cover
[0032] 21-Handle
[0033] 31-Horizontal screen
[0034] 32-Vertical screen
[0035] 4- Fan
[0036] 5-Baffle
[0037] 6- Heater
[0038] 7-Collection hopper
[0039] 8-Water injection pipe
[0040] 91-Fan button
[0041] 92-Heating button
[0042] 10- Foaming particles DETAILED DESCRIPTION
[0043] The utility model is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the utility model will become clearer and more specific.
[0044] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.
[0045] According to a small foam particle pre-foaming device provided by the utility model, Figure 1 and Figure 2 As shown in the figure, the device includes a sealed box 1 with an upper opening, and an upper cover 2 that can be opened or closed freely is arranged at the upper opening of the sealed box 1; a handle 21 is arranged on the upper cover 2, and the upper cover 2 can be opened and closed by the handle 21.
[0046] A screen and a fan 4 are arranged above the interior of the closed box 1.
[0047] A discharge port is provided on the wall of the closed box 1 away from the fan 4, and a movable baffle 5 is provided at the discharge port; when the baffle 5 is closed, the discharge port can be completely blocked, so that the discharge port is also a sealed structure; when the baffle 5 is opened, the discharge port is completely opened, and the foaming particles in the closed box can be blown out smoothly.
[0048] The upper cover plate 2, the screen, the wall of the closed box 1 and the baffle 5 together form a foaming space for accommodating the particles 10 to be foamed; when the upper cover plate 2 and the baffle 5 are closed, the walls constituting the foaming space are tightly connected.
[0049] Inside the closed box 1, water is contained below the foaming space, and a heater 6 capable of heating the water to generate steam is arranged below the water surface; the water can be selected as pure water or tap water; the heater 6 is preferably an electric heater, and its heat-generating parts are completely immersed in water, and the water level in the closed box 1 is adjusted to ensure that the water surface is higher than the heater 6.
[0050] The fan 4 is located outside the foaming space, and the fan 4 promotes the movement of steam, so that the foaming space is filled with steam to perform the particle pre-foaming operation; the fan also blows the pre-foamed particles to make them float and collide in the foaming space to perform the maturation operation. During the pre-foaming and maturation process of the foamed particles, the fan continues to work and continuously provides airflow to the foaming space. According to the different types of gases in the closed box 1, the type of gas provided to the foaming space also changes accordingly.
[0051] Preferably, the screen includes a horizontally arranged transverse screen 31 and a longitudinally arranged vertical screen 32; the transverse screen 31 and the vertical screen 32 may be integrally formed, or may be independently formed and then connected and fixed.
[0052] The horizontal screen 31 is the bottom surface of the foaming space; the horizontal screen 31 allows steam to pass upward and enter the foaming space, that is, after the steam is produced in the water pool below, it naturally passes upward through the horizontal screen 31 and enters the foaming space; the horizontal screen 31 also allows water droplets on the pre-foamed particles to pass downward and fall into the water. After the pre-foaming operation is completed, the fan blows the foaming particles to fly irregularly in the foaming space. When the foaming particles touch the screen or wall and other structures, the water droplets on the foaming particles are very likely to fall off, and then pass downward through the horizontal screen 31 and fall into the water. As the aging operation time continues, the water droplets that have not detached from the foaming particles will also be evaporated into gas, and finally the moisture on the foaming particles will be completely removed.
[0053] The vertical screen 32 has four sides, of which the side located at the bottom is fixedly connected to the horizontal screen 31, the side located at the top is in contact with the upper cover plate 2 in the closed state, and the left and right sides are independently fixedly connected to the wall surface of the closed box 1. That is, under the volume size limit of the closed box 1, the volume of the foaming space is made as large as possible, so as to improve the pre-foaming efficiency.
[0054] The vertical screen 32 is adjacent to the fan 4, and the vertical screen 32 allows steam or air to flow horizontally into the foaming space under the action of the fan 4. In the pre-foaming operation stage, the closed box is filled with steam, and the steam is blown into the foaming space by the fan to fully contact with the foaming particles. The steam can also drive the foaming particles to fly irregularly in the foaming space, ensuring that the foaming particles are fully in contact with the steam and foam uniformly; in the maturation operation stage, since steam is no longer generated, the steam in the closed box gradually decreases. Under the blowing of the fan, the air passes through the vertical screen 32 and drives the foaming particles to float and collide in the foaming space, thereby quickly eliminating the moisture on the foaming particles and completing the maturation operation.
[0055] Preferably, the mesh size of the screen is 300nm to 500nm, more preferably 400nm. The inventors have found that when the mesh size of the screen is set to the above value, it can ensure that the particles will not escape from the foaming space, and it can also ensure that the air and steam in the box can smoothly enter the foaming space, the effect and efficiency of the pre-foaming and aging operations are good, and good foaming quality can be obtained.
[0056] Preferably, at the discharge port, a receiving hopper 7 is provided outside the baffle 5 , and the foaming particles blown out from the foaming space are received and collected by the receiving hopper 7 .
[0057] The collecting hopper 7 is located outside the closed box and can receive a collecting device for collecting foamed particles. The collecting device can be a container such as a plastic bag; thus, the foamed particles that have been pre-foamed and matured can be quickly and conveniently collected.
[0058] Preferably, a water injection pipe 8 is provided on the wall of the closed box 1 between the foaming space and the water surface, and water is injected into the closed box 1 through the water injection pipe 8, and pressure is released outward through the water injection pipe 8, so that when the particle pre-foaming operation is performed, the pressure in the closed box 1 is maintained at 1.3-1.7 standard atmospheres, preferably 1.5 standard atmospheres. The inventors have found that when the closed box maintains 1.5 standard atmospheres, the pre-foaming effect performed in the box is the best, which can basically ensure that each particle is fully pre-foamed, and finally obtain foamed particles with good performance.
[0059] Preferably, a swing mechanism is provided on the fan 4, through which the fan 4 swings back and forth during operation, thereby expanding the air supply range and avoiding the existence of a windless dead corner in the foaming space, that is, the fan is an automatic shaking fan. The swing mechanism includes a turbine and a worm, and the worm is connected to a motor that drives the fan blades to rotate; the turbine is connected to the closed box 1 through a four-bar mechanism, so that when the motor drives the blades to rotate, the fan is synchronously and slowly driven to swing.
[0060] The air volume of the fan in the present application is 300-400m3 / min, and more preferably 380m3 / min. The inventors found that when the air volume reaches the above value, during pre-foaming, the foaming particles in the foaming space can be fully contacted with the steam, and the pre-foaming operation is fully carried out without dead angles; during ripening, all the foaming particles can completely enter the irregular motion state, thereby ensuring that the surface moisture of the foaming particles is quickly removed, the ripening operation is quickly completed, and finally the pre-foamed particles with good quality are obtained, and there is no need for obvious switching operation in the two operation stages, and the fan can maintain the same air volume, and the overall operation process is simple and convenient.
[0061] Preferably, the power of the heater 6 is 1800-2000W, preferably 2000W; the space size inside the closed box is 550×500×500mm; the applicant has found that when the power of the heater is set to the above value, the steam generated by it can quickly fill the box with the space volume, and fill the box in about 300s, thereby entering the pre-foaming operation stage, and can continuously provide steam that meets the dosage requirements for the pre-foaming operation, ensuring that the pre-foaming operation proceeds smoothly and all particles in the closed box are fully and evenly pre-foamed.
[0062] Preferably, a fan button 91 electrically connected to the fan is provided on the closed box 1, and a heating button 92 electrically connected to the heater 6 is also provided. Only two buttons are required to realize the pre-foaming operation and the ripening operation. The device has a simple structure and is easy to operate. Furthermore, the wall of the box is made of transparent material, so that the pre-foaming operation process of the particles in the box can be clearly observed from the outside.
[0063] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present invention. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.
[0064] The present invention has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, the present invention may be subjected to a variety of substitutions and improvements, all of which fall within the scope of protection of the present invention.
Claims
1. A small foam particle pre-foaming device, It is characterized in that The device comprises a sealed box body (1) with an upper opening, and an upper cover plate (2) which can be opened or closed freely is arranged at the upper opening of the sealed box body (1); A screen and a fan (4) are arranged above the interior of the sealed box (1). A discharge port is provided on a wall surface of the sealed box (1) away from the fan (4), and a movable baffle (5) is provided at the discharge port; The upper cover plate (2), the screen, the wall surface of the closed box (1) and the baffle plate (5) together form a foaming space for accommodating the particles (10) to be foamed; Water is contained inside the sealed box (1) and below the foaming space, and a heater (6) capable of heating the water to generate steam is provided below the water surface; The fan (4) is located outside the foaming space.
2. The small foam particle pre-foaming device according to claim 1, It is characterized in that The screen comprises a horizontally arranged transverse screen (31) and a longitudinally arranged vertical screen (32); The horizontal screen (31) is the bottom surface of the foaming space; the horizontal screen (31) allows steam to pass upward and enter the foaming space, and the horizontal screen (31) also allows water droplets on the pre-foamed particles to pass downward and fall into the water; The vertical screen (32) faces the fan (4), and the vertical screen (32) allows steam or air to flow laterally into the foaming space under the action of the fan (4).
3. The small foam particle pre-foaming device according to claim 2, It is characterized in that The vertical screen (32) has four side edges, wherein the side edge located at the bottom is fixedly connected to the horizontal screen (31), the side edge located at the top is in contact with the upper cover plate (2) in a closed state, and the left and right side edges are independently fixedly connected to the wall surface of the closed box body (1).
4. The small foam particle pre-foaming device according to claim 3, It is characterized in that The mesh size of the sieve is 300nm to 500nm.
5. The small-sized foam particle pre-foaming device according to claim 1, It is characterized in that At the discharge port, a receiving hopper (7) is arranged outside the baffle (5), and the foaming particles blown out from the foaming space are received and collected by the receiving hopper (7).
6. The small-sized foam particle pre-foaming device according to claim 1, It is characterized in that A water injection pipe (8) is provided on the wall of the closed box (1) between the foaming space and the water surface, through which water is injected into the closed box (1), and pressure is also released to the outside through the water injection pipe (8), so that when the particle pre-foaming operation is performed, the pressure in the closed box (1) is maintained at 1.3-1.7 standard atmospheric pressures.
7. The small-sized foam particle pre-foaming device according to claim 1, It is characterized in that The fan (4) is provided with a swing mechanism, through which the fan (4) swings back and forth during operation; the air volume of the fan is 300-400 m3 / min.
8. The small-sized foam particle pre-foaming device according to claim 1, It is characterized in that The power of the heater (6) is 1800-2000W.
9. The small-sized foam particle pre-foaming device according to claim 1, It is characterized in that The sealed box (1) is provided with a fan button (91) electrically connected to the fan, and a heating button (92) electrically connected to the heater (6).