EPS foam plastic vacuum pre-foaming machine
By using a combination structure of spiral water pipe, annular pipe and water storage tank in the EPS foam vacuum pre-foaming machine, the problem of steam condensate accumulation was solved, and uniform foaming and drying of EPS foam beads were achieved, thus improving the foaming effect.
Patent Information
- Application Number
- CN202520251345.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-17
AI Technical Summary
During the vacuum pre-foaming process of EPS foam, steam condensation causes condensate to accumulate, preventing the unfoamed EPS foam beads from fully contacting the steam and resulting in uneven foaming.
The system employs a combination of spiral water pipes, ring pipes, and water storage tanks to collect condensate. The interior of the tank is heated by a hot air blower and a guide pipe to ensure uniform steam contact and drying.
This improved the pre-foaming uniformity of EPS foam beads and reduced the moisture content of the foamed beads, ensuring the uniformity and efficiency of foaming.
Smart Images
Figure CN223604837U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of EPS foam plastics production, and specifically relates to a vacuum pre-foaming machine for EPS foam plastics. BACKGROUND
[0002] Pre-foaming is to make expandable beads swell to a certain degree by heating, so that the density of the product during molding is lower, and the density gradient is reduced, so that the foamed product is uniform. The methods for heating in the pre-foaming process include water vapor, hot water, hot air, and infrared rays, among which water vapor is more commonly used. In the pre-foaming process, the heating temperature and time are strictly controlled to make the expandable beads soften to a high elastic state, but not melt, so that the beads have sufficient strength to balance the internal total pressure and avoid the rupture of the pre-foamed particles.
[0003] At present, when the EPS foam plastics are pre-foamed in vacuum, steam needs to be added into the tank to provide the required heat for pre-foaming. However, the steam will condense after being discharged into the tank and a large amount of condensed water will be generated in the tank, which will gather at the bottom of the tank and submerge the unfoamed EPS foam plastics beads at the bottom, so that the unfoamed EPS foam plastics beads cannot be in full contact with the steam, resulting in uneven foaming of the EPS foam plastics beads. SUMMARY
[0004] The utility model aims at providing a vacuum pre-foaming machine for EPS foam plastics to solve the problems in the background art.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A vacuum pre-foaming machine for EPS foam plastics comprises
[0007] A foaming mechanism comprises a tank body, a feed pipe connected in communication is fixedly connected to one side of the top of the tank body, a threaded cover is threadedly connected to the top of the feed pipe, a discharge valve connected in communication is fixedly connected to the bottom of the tank body, a motor is fixedly connected to the top of the tank body, a stirring rod is fixedly connected to the output end of the motor, the stirring rod is arranged in the interior of the tank body, and a steam valve connected in communication is fixedly connected to one side of the outer wall of the tank body.
[0008] The drainage mechanism comprises spiral water pipes fixedly connected to the bottom of the tank body in an annular array, a filter screen fixedly connected to the top of each group of the spiral water pipes, an annular pipe fixedly connected to the bottom of each group of the spiral water pipes, a drainage pipe fixedly connected to one side of the bottom of the annular pipe, a water storage tank detachably connected to the bottom of the drainage pipe, a drainage valve fixedly connected to the bottom of the water storage tank in communication, a hot air machine fixedly connected to one side of the outer wall of the tank body in communication, and a flow guide pipe fixedly connected between the output end of the hot air machine and the annular pipe in communication.
[0009] As a further scheme of the present application, a through hole is formed in the top of the tank body, and a transparent glass plate is fixedly connected in the through hole.
[0010] As a further scheme of the present application, a rotating shaft is rotatably connected in the transparent glass plate, and a scraping rod is fixedly connected to the outer side of the rotating shaft and in contact with the bottom wall of the transparent glass plate.
[0011] As a further scheme of the present application, the water storage tank is threadedly connected with the drainage pipe, and a stop ring corresponding to the water storage tank is fixedly connected to the outer side of the drainage pipe.
[0012] As a further scheme of the present application, a sealing ring is fixedly connected to the bottom of the stop ring, and the water storage tank abuts against the stop ring.
[0013] As a further scheme of the present application, a valve in communication is fixedly connected to one end of the flow guide pipe away from the annular pipe, and the end of the valve away from the flow guide pipe is fixedly connected with the output end of the hot air machine in communication.
[0014] Compared with the prior art, the present application has the following advantages:
[0015] After the above structure is adopted,
[0016] 1. Through the cooperation of the spiral water pipes, the annular pipe and the water storage tank, steam provides the heat required for foaming in the foaming process, so that the steam is condensed in the tank body, thereby generating a large amount of condensed water. Part of the condensed water falls into the inside of the spiral water pipe through the filter screen, then flows into the annular pipe, and then flows into the inside of the water storage tank through the drainage pipe to be collected, thereby reducing the accumulation of condensed water on the lower side of the inside of the tank body, causing part of the unfoamed EPS foam plastic beads to be immersed in the condensed water and unable to contact with the steam, thereby reducing the probability of not being able to obtain foaming, and effectively improving the uniformity of the EPS foam plastic bead pre-foaming.
[0017] 2. By the cooperation of the hot air blower, the annular pipe and the screw water pipe, the hot air flow generated by the hot air blower when starting to work can be discharged into the inside of the tank through the flow guide pipe, the annular pipe and the flow guide of each group of screw water pipes, so as to heat and dry the EPS foamed plastic beads after foaming in the inside of the tank, thereby effectively reducing the water content on the surface of the EPS foamed plastic beads after foaming. BRIEF DESCRIPTION OF DRAWINGS
[0018] The utility model will be further explained in detail in combination with the embodiments in the drawings, but it does not constitute any limitation to the utility model.
[0019] Figure 1 It is a structural schematic view of an EPS foamed plastic vacuum pre-foaming machine.
[0020] Figure 2 It is a structural schematic view of an EPS foamed plastic vacuum pre-foaming machine. Figure 1
[0021] Figure 3 It is a structural schematic view of an EPS foamed plastic vacuum pre-foaming machine. Figure 1
[0022] Figure 4 It is a partial structural sectional view of an EPS foamed plastic vacuum pre-foaming machine.
[0023] Figure 5 It is a structural schematic view of an EPS foamed plastic vacuum pre-foaming machine. Figure 4
[0024] In the figure: 1, foaming mechanism; 101, tank body; 102, discharge valve; 103, feeding pipe; 104, screw cap; 105, steam valve; 106, motor; 107, stirring rod; 108, transparent glass plate; 109, through hole; 110, rotating shaft; 111, scraper rod; 2, drainage mechanism; 201, screw water pipe; 202, annular pipe; 203, drainage pipe; 204, water storage tank; 205, retaining ring; 206, sealing ring; 207, drainage valve; 208, flow guide pipe; 209, valve; 210, hot air blower; 211, filter screen. DETAILED DESCRIPTION
[0025] The technical scheme of the patent will be further explained in detail in combination with the specific implementation manner.
[0026] Please refer to Figures 1-5 The utility model provides an EPS foamed plastic vacuum pre -foaming machine, including foaming mechanism 1, foaming mechanism 1 includes jar body 101, the top side fixedly connected with the communication of feed pipe 103 of jar body 101, the setting of feed pipe 103 is convenient for to the inside of jar body 101 adds the EPS foamed plastic bead and foaming agent of pre -foaming to be waited for, the top screw thread connection of feed pipe 103 has screw cap 104, and the setting is used for covering feed pipe 103 of screw cap 104.
[0027] The outer wall of the jar body 101 is fixedly connected with a steam valve 105 in communication. The steam valve 105 is configured to connect the output end of a steam generator, so that when the steam valve 105 is opened, the steam generated by the steam generator when it is working can be discharged into the interior of the jar body 101, thereby providing a heat source for the pre-expansion of the EPS foamed plastic beads. A through hole 109 is formed in the top of the jar body 101, and a transparent glass plate 108 is fixedly connected inside the through hole 109. The transparent glass plate 108 is configured to facilitate observation of the progress of the pre-expansion of the EPS foamed plastic beads inside the jar body 101. A rotating shaft 110 is rotatably connected inside the transparent glass plate 108. The outer side of the rotating shaft 110 is fixedly connected with a scraper rod 111 that is in contact with the bottom wall of the transparent glass plate 108. When the rotating shaft 110 rotates, it can drive the scraper rod 111 to rotate, thereby scraping off the condensed water that has condensed on the transparent glass plate 108, so as to more clearly observe the progress of the pre-expansion of the EPS foamed plastic beads inside the jar body 101.
[0028] The top of the jar body 101 is fixedly connected with a motor 106, and the output end of the motor 106 is fixedly connected with a stirring rod 107. The stirring rod 107 is arranged inside the jar body 101. The motor 106 is configured to drive the stirring rod 107 to rotate when it is started, so that the rotating stirring rod 107 can stir the EPS foamed plastic beads and the foaming agent inside the jar body 101, thereby making the pre-expansion of the EPS foamed plastic beads more uniform and sufficient.
[0029] The bottom of each group of screw water pipes 201 is fixedly connected with an annular pipe 202, one side of the bottom of the annular pipe 202 is fixedly connected with a drain pipe 203, the bottom of the drain pipe 203 is detachably connected with a water storage tank 204, the annular pipe 202 and the drain pipe 203 are arranged to guide the condensed water discharged from the screw water pipe 201 to the inside of the water storage tank 204. The water storage tank 204 is threadedly connected with the drain pipe 203, the outer side of the drain pipe 203 is fixedly connected with a stop ring 205 corresponding to the water storage tank 204, and the water storage tank 204 is connected with the drain pipe 203 in a threaded connection manner, so that the water storage tank 204 can be easily disassembled subsequently. The bottom of the stop ring 205 is fixedly connected with a sealing ring 206, the water storage tank 204 abuts against the stop ring 205, and the sealing ring 206 is arranged to seal the gap between the stop ring 205 and the water storage tank 204, so as to reduce the probability of condensed water leakage.
[0030] The bottom of the water storage tank 204 is fixedly connected with a drain valve 207 in communication, and the drain valve 207 is arranged to discharge the condensed water collected in the water storage tank 204 when opened. One side of the outer wall of the tank body 101 is fixedly connected with a heat blower 210 in communication, a flow guide pipe 208 in communication is fixedly connected between the output end of the heat blower 210 and the annular pipe 202, and the heat blower 210 is arranged to discharge the hot gas generated into the inside of the flow guide pipe 208 when started to work, and then the hot gas is discharged into the inside of the tank body 101 through the annular pipe 202 and the screw water pipe 201, so as to heat and dry the EPS foam plastic beads in the inside of the tank body 101. One end of the flow guide pipe 208 away from the annular pipe 202 is fixedly connected with a valve 209 in communication, the end of the valve 209 away from the flow guide pipe 208 is fixedly communicated with the output end of the heat blower 210, and the valve 209 is arranged to prevent the steam from flowing into the inside of the heat blower 210 through the flow guide pipe 208 when closed, so as to reduce the probability of damage of the heat blower 210.
[0031] In this embodiment, the heat blower 210 is a prior art, which will not be described here.
[0032] In use, the threaded cap 104 is unscrewed, the EPS foam beads to be foamed and the foaming agent are poured into the interior of the tank body 101, and then the threaded cap 104 is screwed again to cover the feeding pipe 103, after which the interior of the tank body 101 is vacuumized, the input end of the steam valve 105 is connected to a steam generator, then the steam valve 105 is opened and the motor 106 is started, so that the motor 106 can drive the stirring rod 107 to rotate when starting to work, and the stirring rod 107 can stir the EPS foam beads and the foaming agent in the interior of the tank body 101 when rotating, and when the steam valve 105 is opened, the steam generated by the steam generator when working can be discharged into the interior of the tank body 101, so that the temperature in the interior of the tank body 101 reaches 80-90℃, so that the foaming agent in the interior of the tank body 101 is vaporized to generate pressure under the heating of the steam, so that the beads begin to expand and form bubbles that are not connected to each other, and with the continuous penetration of the steam, the volume of the beads gradually increases, so as to realize the pre-foaming of the EPS foam beads, and in the process of foaming, the steam provides the heat required for foaming, causing the steam to condense in the interior of the tank body 101, so as to generate a large amount of condensed water, and part of the condensed water falls into the interior of the screw water pipe 201 through the filter screen 211, then flows into the annular pipe 202, and then flows into the interior of the water storage tank 204 through the drain pipe 203 to be collected, and part of the condensed water adheres to the surface of the foamed EPS foam beads, after the EPS foam beads are foamed, the threaded cap 104 is unscrewed, the valve 209 is opened, and the hot air blower 210 and the motor 106 are started, so that the hot air flow generated by the hot air blower 210 when starting to work can be discharged into the interior of the tank body 101 through the flow guide pipe 208, the annular pipe 202 and the flow guide of each group of screw water pipes 201, so as to heat and dry the foamed EPS foam beads in the interior of the tank body 101, and the motor 106 can drive the stirring rod 107 to rotate when starting to work, so as to stir the EPS foam beads in the interior of the tank body 101, so that the EPS foam beads are dried more uniformly, and after the EPS foam beads are dried, the pre-foamed EPS foam beads in the interior of the tank body 101 can be discharged out of the interior of the tank body 101 by only opening the discharge valve 102.
[0033] The above-mentioned embodiments are preferred embodiments of the present application, which are only used to facilitate the description of the present application and do not limit the present application in any form, and any person with ordinary knowledge in the art can make equivalent embodiments by making partial changes or modifications within the scope of the technical features disclosed by the present application without departing from the technical features of the present application, and the equivalent embodiments still belong to the scope of the technical features of the present application.
Claims
1. A vacuum pre-foaming machine for EPS foam, characterized in that, include A foaming mechanism (1) includes a tank (101), a feed pipe (103) is fixedly connected to one side of the top of the tank (101), a threaded cap (104) is threadedly connected to the top of the feed pipe (103), a discharge valve (102) is fixedly connected to the bottom of the tank (101), a motor (106) is fixedly connected to the top of the tank (101), a stirring rod (107) is fixedly connected to the output end of the motor (106), the stirring rod (107) is disposed inside the tank (101), and a steam valve (105) is fixedly connected to one side of the outer wall of the tank (101). The drainage mechanism (2) includes a spiral water pipe (201) fixedly connected to the bottom of the tank (101) in a ring array. Each group of spiral water pipes (201) is fixedly connected to a filter screen (211) at the top. Each group of spiral water pipes (201) is fixedly connected to a ring pipe (202) at the bottom. A drain pipe (203) is fixedly connected to one side of the bottom of the ring pipe (202). A water storage tank (204) is detachably connected to the bottom of the drain pipe (203). A drain valve (207) is fixedly connected to the bottom of the water storage tank (204). A hot air blower (210) is fixedly connected to one side of the outer wall of the tank (101). A guide pipe (208) is fixedly connected between the output end of the hot air blower (210) and the ring pipe (202).
2. The EPS foam vacuum pre-foaming machine according to claim 1, characterized in that, The top of the tank (101) is provided with a through opening (109), and a transparent glass plate (108) is fixedly connected inside the through opening (109).
3. The EPS foam vacuum pre-foaming machine according to claim 2, characterized in that, The transparent glass plate (108) is rotatably connected to a rotating shaft (110), and a scraper (111) that contacts the bottom wall of the transparent glass plate (108) is fixedly connected to the outside of the rotating shaft (110).
4. The EPS foam vacuum pre-foaming machine according to claim 1, characterized in that, The water storage tank (204) is threadedly connected to the drain pipe (203), and a retaining ring (205) corresponding to the water storage tank (204) is fixedly connected to the outside of the drain pipe (203).
5. The EPS foam vacuum pre-foaming machine according to claim 4, characterized in that, A sealing ring (206) is fixedly connected to the bottom of the retaining ring (205), and the water storage tank (204) abuts against the retaining ring (205).
6. The EPS foam vacuum pre-foaming machine according to claim 1, characterized in that, A valve (209) is fixedly connected to one end of the guide pipe (208) away from the annular pipe (202), and the end of the valve (209) away from the guide pipe (208) is fixedly connected to the output end of the hot air blower (210).