Polystyrene foaming and curing device

Abstract

The invention provides a polystyrene foaming and curing device, and belongs to the technical field of polystyrene foaming equipment, the polystyrene foaming and curing device comprises a net cage and a conveying auger arranged at the central position in the net cage, the conveying auger can convey materials at the bottom of the net cage upwards to enable the materials in the net cage to flow circularly, a pressurizing pipe is arranged at the output end of the conveying auger, a first electric valve and a second electric valve are arranged at the two ends of the pressurizing pipe respectively, when the first electric valve and the second electric valve are closed, the pressurizing pipe can be sealed, and when the first electric valve and the second electric valve are opened, the pressurizing pipe can be sealed. The conveying auger can be used for conveying materials into the pressurizing pipe; the conveying auger is used for circularly conveying to-be-cured polystyrene particles in the net cage into the pressurizing pipe to be pressurized, so that the polystyrene particles in the curing process can be subjected to the action of pressure, a foaming agent can be uniformly dispersed in resin, and the foaming quality of the polystyrene particles is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of polystyrene foaming equipment, and in particular relates to a polystyrene foaming and maturing device. Background Art

[0002] Polystyrene foam materials are widely used in the packaging industry, construction industry and other fields. Their light weight, thermal insulation, sound insulation and shock absorption properties make them ideal building insulation materials, while their excellent impact resistance and cushioning properties make them ideal packaging box production materials.

[0003] Polystyrene foaming requires that unfoamed polystyrene particles be put into a foaming tank, and the polystyrene particles are fully foamed under the action of high-temperature steam and pressure. The foamed polystyrene is then transported to a fluidized bed to be cooled and dried. Finally, the cooled and dried polystyrene particles are transported to a maturation bin for maturation. During the maturation process, air gradually penetrates into the pores to achieve pressure balance inside and outside the pores, while allowing the condensed foaming agent to penetrate into the particles again, and allowing the pre-foamed particles to gradually restore their elasticity.

[0004] At present, the aging bin of polystyrene is a breathable mesh box, and the foamed polystyrene is directly transported into the mesh box and naturally matured by air. At the same time, a stirring mechanism is set in the mesh box to stir the foamed polystyrene particles, so that the foamed polystyrene is fully in contact with the air, shortening the aging time of the polystyrene particles. However, factors that affect the aging quality of polystyrene particles also include temperature, time, pressure and catalysts. During the aging process, appropriate pressure helps to evenly disperse the foaming agent in the resin and improve the foaming quality of the polystyrene particles. In order to allow the polystyrene particles to fully contact with the air, the current aging bins all use a breathable mesh box structure, which cannot pressurize the aging of the polystyrene particles, resulting in the inability to further improve the foaming quality of the polystyrene particles. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a polystyrene foaming and maturing device, which at least partially solves the above problems.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a polystyrene foaming and maturing device, comprising a mesh box and a conveying auger arranged at the center of the mesh box, wherein the conveying auger can convey the material at the bottom of the mesh box upwards, so that the material in the mesh box circulates; Wherein, a pressurizing pipe is provided at the output end of the conveying auger, and a first electric valve and a second electric valve are provided at both ends of the pressurizing pipe respectively. When the first electric valve and the second electric valve are closed, the pressurizing pipe can be sealed, and when the first electric valve and the second electric valve are opened, the conveying auger can convey materials into the pressurizing pipe; An air pump, wherein the output end of the air pump is connected to an air pipe, the other end of the air pipe is connected to the pressurized pipe, and the air pump delivers air to the pressurized pipe through the air pipe to increase the pressure inside the pressurized pipe.

[0007] Furthermore, a pressure sensor is provided on one side of the pressurized tube, and a detection end of the pressure sensor extends into the interior of the pressurized tube for real-time monitoring of the air pressure inside the pressurized tube.

[0008] Furthermore, a connecting pipe and a plurality of evenly distributed exhaust pipes are provided inside the mesh box, and the plurality of exhaust pipes are connected to the connecting pipe. The exhaust pipe is provided with a plurality of exhaust holes distributed along the length direction of the exhaust pipe. An electromagnetic valve for exhaust is connected to one side of the pressurized pipe, and one end of the connecting pipe is connected to the output end of the electromagnetic valve.

[0009] Furthermore, a temperature sensor is provided on one side of the pressurized tube, and a detection section of the temperature sensor extends to the inside of the pressurized tube for real-time monitoring of the internal temperature of the pressurized tube.

[0010] Furthermore, an air heater is provided on one side of the air pump, and the air heater is connected in series to the air pipe for heating the air transported by the air pipe.

[0011] Furthermore, the gas delivery pipe is connected to the bottom of the pressurized pipe.

[0012] Furthermore, the first electric valve is located at the bottom end of the pressurized pipe, and the second electric valve is located at the top end of the pressurized pipe.

[0013] Furthermore, both the first electric valve and the second electric valve are electric butterfly valves.

[0014] Furthermore, a feed pipe is provided on the top of the net box, one end of the feed pipe is connected to the net box, and the other end of the feed pipe is connected to an external conveying device.

[0015] Furthermore, a funnel-shaped collecting hopper is provided at the bottom of the net box, and a discharge pipe for discharging materials is provided at the bottom of the collecting hopper.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. By arranging a conveying auger and a pressure pipe in the net box, the conveying auger is used to circulate the polystyrene particles to be matured in the net box to the pressure pipe for pressurization, so that the polystyrene particles in the maturation process can be subjected to pressure, which helps to evenly disperse the foaming agent in the resin and improve the foaming quality of the polystyrene particles; At the same time, an air pump is used to continuously supply air. After the pressure is reached, the electromagnetic air valve discharges excess gas to pressurize the pressurized pipe, so that the air in the pressurized pipe is always in a flowing state. The air can fully contact the polystyrene particles and improve the aging quality.

[0017] 2. By setting evenly distributed exhaust pipes in the mesh box and using the gas overflowed from the electromagnetic air valve to supply air to the exhaust pipes, the exhaust pipes evenly distributed in the mesh box can disperse the air to the inside of the mesh box through the exhaust holes, increase the air flow inside the mesh box, and enable the polystyrene particles inside the mesh box to fully contact with the air, avoiding inconsistent maturation speeds of the polystyrene particles inside the mesh box and the polystyrene outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a polystyrene foaming and maturing device proposed in an embodiment of the present invention; Figure 2 A schematic diagram of the structure inside a mesh box in a polystyrene foaming and maturing device proposed in an embodiment of the present invention; Figure 3 A schematic diagram of the position distribution of exhaust pipes in a polystyrene foaming and maturing device proposed in an embodiment of the present invention; Figure 4 A schematic diagram of the internal structure of a conveying auger in a polystyrene foaming and maturing device proposed in an embodiment of the present invention; Figure 5 for Figure 3 The enlarged schematic diagram at A in the middle; Figure 6 This is a structural block diagram of a polystyrene foaming and maturing device proposed in an embodiment of the present invention.

[0019] Among them, 100, controller; 1, mesh box; 11, feed pipe; 12, collecting hopper; 13, discharge pipe; 2, conveying auger; 3, pressurizing pipe; 31, first electric valve; 32, second electric valve; 33, pressure sensor; 34, temperature sensor; 4, air pump; 41, air pipe; 42, air heater; 5, solenoid valve; 6, exhaust pipe; 601, exhaust hole; 7, connecting pipe.

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0023] like Figure 1 and Figure 2 As shown, the present invention proposes a polystyrene foaming and maturing device, which includes a mesh box 1, a conveying auger 2, a pressurizing pipe 3 and an air pump 4.

[0024] The net box 1 includes a support and a fence. The fence is used to enclose the outer facade of the support to form a cavity that can store polystyrene. The fence has good air permeability, allowing air to fully enter the inside of the net box 1 to meet the maturation requirements of the polystyrene foam particles.

[0025] A feed pipe 11 is provided on the top of the net box 1, one end of the feed pipe 11 is connected to the net box 1, and the other end of the feed pipe 11 is connected to an external conveying device. The foamed and unripened polystyrene particles are conveyed to the inside of the net box 1 through the feed pipe 11. A funnel-shaped collecting hopper 12 is provided at the bottom of the net box 1, and a discharge pipe 13 for discharging is provided at the bottom of the collecting hopper 12. The polystyrene particles in the net box 1 are collected through the collecting hopper 12 and discharged through the discharge pipe 13.

[0026] The conveying auger 2 is arranged at the inner center of the net box 1, and the feeding end of the conveying auger 2 is located at the bottom of the net box 1. The conveying direction of the conveying auger 2 is from the bottom of the net box 1 upward. When the conveying auger 2 is running, the material at the bottom center of the net box 1 can be conveyed upward, and the upper material flows downward under the action of gravity, so that the material in the net box 1 can circulate, avoiding the inconsistent maturation speed of polystyrene at the center and the outside of the net box 1 due to accumulation.

[0027] Combination Figure 2 and Figure 3As shown, a pressurized pipe 3 is provided at the output end of the conveying auger 2. The pressurized pipe 3 is coaxial with the conveying auger 2, and the inner diameter of the pressurized pipe 3 is the same as the inner diameter of the conveying auger 2. The conveying auger 2 can convey the polystyrene particles upward to the inside of the pressurized pipe 3. By increasing the pressure inside the pressurized pipe 3, the polystyrene particles in the aging process can be subjected to the effect of pressure, which helps to evenly disperse the foaming agent in the resin and improve the foaming quality of the polystyrene particles. Furthermore, a first electric valve 31 and a second electric valve 32 are respectively provided at both ends of the pressurized pipe 3. When the first electric valve 31 and the second electric valve 32 are closed, the two ends of the pressurized pipe 3 are sealed. At this time, the interior of the pressurized pipe 3 is in a sealed state, providing a pressurized space for the polystyrene particles. When the first electric valve 31 and the second electric valve 32 are opened, the conveying auger 2 can convey materials into the pressurized pipe 3 and simultaneously push the original materials in the pressurized pipe 3 upwards, thereby completing the replacement of the materials in the pressurized pipe 3 and allowing the polystyrene particles in the net box 1 to circulate into the pressurized pipe 3 for pressurization.

[0028] In a specific embodiment, the output end of the air pump 4 is connected to an air pipe 41, and the other end of the air pipe 41 is connected to the pressurized pipe 3. When the first electric valve 31 and the second electric valve 32 are closed, the air pump 4 transports air into the pressurized pipe 3 through the air pipe 41 to increase the internal pressure of the pressurized pipe 3.

[0029] In this way, the conveying auger 2 is used to convey the polystyrene particles in the net box 1 into the pressurized pipe 3, and then the first electric valve 31 and the second electric valve 32 are closed. At this time, the two ends of the pressurized pipe 3 are closed, and the interior of the pressurized pipe 3 is in a sealed state. The air pump 4 conveys air to the pressurized pipe 3 through the air pipe 41 to increase the internal pressure of the pressurized pipe 3. After reaching the specified pressure and maintaining it for a certain time, the polystyrene particles in the aging process can be affected by the pressure, which helps to evenly disperse the foaming agent in the resin and improve the foaming quality of the polystyrene particles. After a certain period of time, the first electric valve 31 and the second electric valve 32 are opened, and the conveying auger 2 continues to convey the polystyrene particles in the net box 1 into the pressurized pipe 3. At this time, the original polystyrene particles in the pressurized pipe 3 are pushed upward, completing the replacement of the material in the pressurized pipe 3, so that the polystyrene particles in the net box 1 can circulate into the pressurized pipe 3 for pressurization.

[0030] In an optional embodiment, the top discharge port of the pressurized tube 3 extends to the top of the net box 1. After the polystyrene particles in the pressurized tube 3 are pushed out, they can fall back into the net box 1 from the top of the net box 1, thereby realizing the circulation of the polystyrene particles in the net box 1.

[0031] Furthermore, a pressure sensor 33 is provided on one side of the pressurized tube 3, and the detection end of the pressure sensor 33 extends to the inside of the pressurized tube 3, which is used to monitor the air pressure inside the pressurized tube 3 in real time, so as to facilitate the operator to control the air pressure inside the pressurized tube 3 and avoid excessive or insufficient pressure.

[0032] Combination Figure 2 , Figure 3 and Figure 4 As shown, one side of the pressurized pipe 3 is connected to an electromagnetic air valve 5 for exhaust. When the air pressure in the pressurized pipe 3 reaches the specified pressure, air is continuously supplied to the pressurized pipe 3 through the air pump 4, and excess gas is discharged through the electromagnetic air valve 5 to maintain the pressure balance in the pressurized pipe 3. At the same time, the air in the pressurized pipe 3 is always in a flowing state, and the air can fully contact with the polystyrene particles.

[0033] Combination Figure 2 , Figure 3 and Figure 5 As shown, a connecting pipe 7 and a plurality of evenly distributed exhaust pipes 6 are also provided inside the net box 1, and the plurality of exhaust pipes 6 are all connected to the connecting pipe 7. The exhaust pipe 6 is vertically arranged inside the net box 1, and a plurality of exhaust holes 601 distributed along the length direction of the exhaust pipe 6 are opened on the exhaust pipe 6. One end of the connecting pipe 7 is connected to the output end of the electromagnetic valve 5. When the electromagnetic valve 5 is exhausted, the exhausted gas is transported to the exhaust pipe 6 via the connecting pipe 7 to supply air to the exhaust pipe 6. The exhaust pipe 6 evenly distributed in the net box 1 can disperse and transport the air to the inside of the net box 1 through the exhaust holes 601, thereby increasing the air flow inside the net box 1 and allowing the polystyrene particles inside the net box 1 to fully contact with the air, thereby avoiding inconsistent maturation speeds of the polystyrene particles inside the net box 1 and the polystyrene outside.

[0034] Combination Figure 3 and Figure 6 As shown, a temperature sensor 34 is provided on one side of the pressurized pipe 3, and the detection section of the temperature sensor 34 extends to the inside of the pressurized pipe 3. The temperature sensor 34 can monitor the internal temperature of the pressurized pipe 3. At the same time, an air heater 42 is provided on one side of the air pump 4. The air heater 42 is connected in series to the air supply pipe 41 and can heat the air transported by the air supply pipe 41.

[0035] In this way, when the temperature is low, the air heater 42 heats the air transported by the air transport pipe 41, and finally makes the temperature inside the pressurized pipe 3 within a specified range.

[0036] Combination Figure 4As shown, the first electric valve 31 is located at the bottom end of the pressurized pipe 3, the second electric valve 32 is located at the top end of the pressurized pipe 3, and the air pipe 41 is connected to the bottom of the pressurized pipe 3. When the pressurization inside the pressurized pipe 3 is completed and new polystyrene particles need to be replaced, the second electric valve 32 located at the top of the pressurized pipe 3 can be opened first, and the air flow output by the air pipe 41 can be used to blow the polystyrene particles inside the pressurized pipe 3 upwards, and then the air pump 4 is closed, and the first electric valve 31 located at the bottom of the pressurized pipe 3 is opened, so that the conveying auger 2 can convey the polystyrene particles into the pressurized pipe 3.

[0037] In an optional embodiment, both the first electric valve 31 and the second electric valve 32 are electric butterfly valves. After the butterfly valve is opened, the flow channel area occupied by the valve core is small, which will not cause great resistance to the transportation of polystyrene particles.

[0038] Combination Figure 6 As shown, the present invention also includes a controller 100, and the conveying auger 2, the first electric valve 31, the second electric valve 32, the air pump 4, the air heater 42 and the electromagnetic valve 5 are all electrically connected to the controller 100, and the pressure sensor 33 and the temperature sensor 34 are signal-connected to the controller 100. Based on the detection signals of the pressure sensor 33 and the temperature sensor 34, the controller 100 controls the conveying auger 2, the first electric valve 31, the second electric valve 32, the air pump 4, the air heater 42 and the electromagnetic valve 5 to operate according to a preset control logic.

[0039] In a specific embodiment, the control logic is as follows: the conveying auger 2 conveys the polystyrene particles into the pressurized pipe 3 according to the set conveying time, so that the polystyrene particles fill the pressurized pipe 3. After the conveying is completed, the first electric valve 31 and the second electric valve 32 are controlled to be closed, and then the air pump 4 is started. According to the pressure signal fed back by the pressure sensor 33, when the pressure exceeds the set pressure, the electromagnetic valve 5 is opened to exhaust. When the pressure is lower than the set pressure, the electromagnetic valve 5 is closed (the air pump 4 is not closed). After the set time is reached, the air pump 4 and the electromagnetic valve 5 are closed, and the first electric valve 31 and the second electric valve 32 are controlled to be opened, and then the conveying auger 2 is started again. The conveying auger 2 conveys the polystyrene particles into the pressurized pipe 3 according to the set conveying time. The above steps are repeated to cyclically pressurize the polystyrene particles. According to the feedback signal from the temperature sensor 34, if the temperature is lower than the set temperature, the air heater 42 is controlled to turn on.

[0040] It should be noted that the conveying time of the conveying auger 2 is determined according to the feeding speed of the conveying auger 2 and the capacity of the pressurizing pipe 3 . When the conveying time is over, the polystyrene particles conveyed by the conveying auger 2 just fill the pressurizing pipe 3 .

[0041] It can be understood that during the pressurization process, the air pump 4 is never closed, and the excess air pressure is discharged by the electromagnetic air valve 5, so that the air in the pressurization pipe 3 is always in a flowing state, and the air can fully contact the polystyrene particles.

[0042] The working principle of the present invention is as follows: the foamed and unripened polystyrene particles are transported to the inside of the net box 1 through the feed pipe 11, and the conveying auger 2 conveys the polystyrene particles into the pressurized pipe 3 according to the set conveying time, so that the polystyrene particles fill the pressurized pipe 3. After the conveying is completed, the first electric valve 31 and the second electric valve 32 are controlled to be closed, and then the air pump 4 is started. The air pump 4 conveys air into the pressurized pipe 3 through the air delivery pipe 41 to increase the internal pressure of the pressurized pipe 3. According to the pressure signal fed back by the pressure sensor 33, when the set pressure is exceeded, the pressure sensor 33 sends the air to the pressurized pipe 3. When the pressure is lower than the set pressure, the electromagnetic valve 5 is closed. After the set time is reached, the air pump 4 and the electromagnetic valve 5 are closed, and the first electric valve 31 and the second electric valve 32 are controlled to open. Then the conveying auger 2 is started again. The conveying auger 2 conveys the polystyrene particles into the pressurizing pipe 3 according to the set conveying time. At this time, the original polystyrene particles in the pressurizing pipe 3 are pushed out upwards, completing the replacement of the material in the pressurizing pipe 3, so that the polystyrene particles in the net box 1 can circulate into the pressurizing pipe 3 for pressurization; The temperature sensor 34 can monitor the internal temperature of the pressurized pipe 3. When the temperature is low, the air heater 42 heats the air delivered by the air delivery pipe 41, and finally makes the temperature inside the pressurized pipe 3 within a specified range; During the pressurization process, the air pump 4 is never closed, and the excess air pressure is discharged by the electromagnetic air valve 5, so that the air in the pressurization pipe 3 is always in a flowing state, and the air can fully contact with the polystyrene particles. At the same time, the gas discharged by the electromagnetic air valve 5 is transported to the exhaust pipe 6 via the connecting pipe 7 to supply air to the exhaust pipe 6. The exhaust pipe 6 evenly distributed in the net box 1 can disperse and transport the air to the inside of the net box 1 through the exhaust holes 601, thereby increasing the air flow inside the net box 1, so that the polystyrene particles inside the net box 1 can fully contact with the air, thereby avoiding the inconsistency of the maturation speed of the polystyrene particles inside the net box 1 and the polystyrene outside. Finally, the matured polystyrene particles are collected in the collecting hopper 12 and discharged through the discharge pipe 13 .

[0043] In summary of the above embodiments: by arranging a conveying auger 2 and a pressurizing pipe 3 in the net box 1, the conveying auger 2 is used to circulate the polystyrene particles to be matured in the net box 1 to the pressurizing pipe 3 for pressurization, so that the polystyrene particles in the maturation process can be subjected to pressure, which helps to evenly disperse the foaming agent in the resin and improve the foaming quality of the polystyrene particles; At the same time, the air pump 4 is used to continuously supply air. After the pressure is reached, the electromagnetic air valve 5 discharges excess gas to pressurize the pressurizing pipe 3, so that the air in the pressurizing pipe 3 is always in a flowing state, and the air can fully contact the polystyrene particles, thereby improving the aging quality.

[0044] By arranging evenly distributed exhaust pipes 6 in the net box 1 and using the gas overflowing from the electromagnetic air valve 5 to supply air to the exhaust pipes 6, the exhaust pipes 6 evenly distributed in the net box 1 can disperse and transport the air to the interior of the net box 1 through the exhaust holes 601, thereby increasing the air flow inside the net box 1 and allowing the polystyrene particles inside the net box 1 to fully contact with the air, thereby avoiding inconsistent maturation speeds of the polystyrene particles inside the net box 1 and the polystyrene outside.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0047] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A polystyrene foaming and maturing device, characterized in that: It comprises a net box (1) and a conveying auger (2) arranged at the center of the net box (1), wherein the conveying auger (2) is capable of conveying materials at the bottom of the net box (1) upwards, so that the materials in the net box (1) circulate; The output end of the conveying auger (2) is provided with a pressurizing pipe (3), and the two ends of the pressurizing pipe (3) are respectively provided with a first electric valve (31) and a second electric valve (32); when the first electric valve (31) and the second electric valve (32) are closed, the pressurizing pipe (3) can be sealed; when the first electric valve (31) and the second electric valve (32) are opened, the conveying auger (2) can convey materials into the pressurizing pipe (3); An air pump (4), wherein the output end of the air pump (4) is connected to an air delivery pipe (41), the other end of the air delivery pipe (41) is connected to the pressurizing pipe (3), and the air pump (4) delivers air to the pressurizing pipe (3) through the air delivery pipe (41) to increase the pressure inside the pressurizing pipe (3).

2. The polystyrene foaming and maturing device according to claim 1, characterized in that: A pressure sensor (33) is provided on one side of the pressurizing tube (3), and a detection end of the pressure sensor (33) extends into the interior of the pressurizing tube (3) for real-time monitoring of the air pressure inside the pressurizing tube (3).

3. The polystyrene foaming and maturing device according to claim 1, characterized in that: The net box (1) is further provided with a connecting pipe (7) and a plurality of evenly distributed exhaust pipes (6), the plurality of exhaust pipes (6) are all connected to the connecting pipe (7), the exhaust pipe (6) is provided with a plurality of exhaust holes (601) distributed along the length direction of the exhaust pipe (6), one side of the pressurizing pipe (3) is connected to an electromagnetic valve (5) for exhaust, and one end of the connecting pipe (7) is connected to the output end of the electromagnetic valve (5).

4. The polystyrene foaming and maturing device according to claim 1, characterized in that: A temperature sensor (34) is provided on one side of the pressurized pipe (3), and a detection section of the temperature sensor (34) extends into the interior of the pressurized pipe (3) for real-time monitoring of the internal temperature of the pressurized pipe (3).

5. The polystyrene foaming and maturing device according to claim 1, characterized in that: An air heater (42) is provided on one side of the air pump (4); the air heater (42) is connected in series to the air delivery pipe (41) and is used to heat the air delivered by the air delivery pipe (41).

6. The polystyrene foaming and maturing device according to claim 1, characterized in that: The gas delivery pipe (41) is connected to the bottom of the pressurizing pipe (3).

7. The polystyrene foaming and maturing device according to claim 1, characterized in that: The first electric valve (31) is located at the bottom end of the pressurizing pipe (3), and the second electric valve (32) is located at the top end of the pressurizing pipe (3).

8. The polystyrene foaming and maturing device according to claim 1, characterized in that: The first electric valve (31) and the second electric valve (32) are both electric butterfly valves.

9. The polystyrene foaming and maturing device according to claim 1, characterized in that: A feeding pipe (11) is provided on the top of the net box (1), one end of the feeding pipe (11) is connected to the net box (1), and the other end of the feeding pipe (11) is connected to an external conveying device.

10. The polystyrene foaming and maturing device according to claim 1, characterized in that: A funnel-shaped collecting hopper (12) is provided at the bottom of the net box (1), and a discharge pipe (13) for discharging materials is provided at the bottom of the collecting hopper (12).

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