Large vacuum hot pressing furnace for preparing porous carbon

Abstract

The utility model relates to the technical field of sintering furnaces, in particular to a large vacuum hot-pressing furnace for preparing porous carbon, which comprises a hot-pressing furnace, the hot-pressing furnace comprises a furnace shell and an inner container, a vacuum component is arranged at the upper end of the furnace shell, a fan component is arranged between the furnace shell and the inner container, and a heating component and a water cooling component are arranged on the fan component. Air in the inner container is pumped through the vacuum assembly to create vacuum, impurity interference is avoided, the heating assembly is started to press a workpiece in a hot mode, the fixed fan and the movable fan sequentially operate, the fixed fan continuously enables heat to be evenly distributed, the movable fan optimizes heat distribution, and the fixed fan and the movable fan are matched with the heating assembly to enable the workpiece to be rapidly heated and stabilized at the preset temperature. And after hot-press forming, the heating assembly is closed, the water cooling assembly and the fan assembly cooperate, the water cooling assembly absorbs heat through circulating water, the fan assembly accelerates heat exchange and air flow, the inner container and the workpiece are rapidly cooled, cooling time is greatly shortened, and therefore the production efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to a large-scale vacuum hot press furnace for preparing porous carbon, belonging to the field of sintering furnace technology. Background Technology

[0002] Porous carbon is a carbon material with a unique microstructure. Its interior exhibits a rich variety of pore structures. These pores vary in size and shape and are interconnected, forming a complex and orderly pore network from micropores to mesopores to macropores. It has an extremely high specific surface area and can provide a large number of active sites for many physical and chemical processes, showing excellent performance in fields such as adsorption, separation, catalysis and energy storage.

[0003] In traditional vacuum hot press furnaces, the heating elements are often arranged in a single and fixed manner during the heating process, making it impossible to dynamically adjust according to the actual heat demand of different areas inside the furnace. This results in uneven heat distribution, which can easily cause local overheating or underheating of the workpiece, greatly reducing the hot pressing effect. After the hot pressing process is completed, a large amount of heat remains in the workpiece and inside the furnace. Relying solely on natural cooling results in an extremely slow heat dissipation rate. Due to the slow cooling rate, a lot of time is required, which greatly reduces production efficiency.

[0004] Therefore, it is urgent to improve the large-scale vacuum hot press furnace used for the preparation of porous carbon in order to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a large-scale vacuum hot press furnace for preparing porous carbon. A vacuum is created by first removing air from the inner liner using a vacuum assembly to prevent interference from impurities. The heating assembly is then activated to hot press the workpiece. A fixed fan and a mobile fan operate sequentially. The fixed fan continuously and evenly distributes heat, while the mobile fan optimizes heat distribution. Together with the heating assembly, they rapidly heat the workpiece and stabilize it at a predetermined temperature, ensuring effective hot pressing. After hot pressing, the heating assembly is turned off. The water-cooling assembly and the fan assembly then work together. The water-cooling assembly absorbs heat using circulating water, while the fan assembly accelerates heat exchange and airflow, promoting rapid cooling of the inner liner and the workpiece. This significantly reduces cooling time and effectively improves production efficiency.

[0006] In order to achieve the above-mentioned purpose, the main technical solutions adopted by this utility model include:

[0007] A large vacuum hot press furnace for preparing porous carbon includes a hot press furnace, the hot press furnace includes a furnace shell and an inner liner, a vacuum component is provided at the upper end of the furnace shell, and a fan component is provided between the furnace shell and the inner liner, the fan component is provided with a heating component and a water cooling component.

[0008] The fan assembly includes a fixed frame, which is fixedly installed inside the furnace shell. Several evenly distributed fixed fans are fixedly installed on the inner sides of both the upper and lower ends of the fixed frame. Several evenly distributed guide rails are fixedly installed on the fixed frame. Electric sliders are slidably connected to the guide rails, and mobile fans are fixedly installed on the electric sliders.

[0009] Preferably, the inner liner is disposed inside the fixed frame, and a lower mold is fixedly installed inside the inner liner.

[0010] Preferably, a lifting hydraulic cylinder is fixedly installed on the furnace shell, and a hydraulic rod is fixedly connected to the output end of the lifting hydraulic cylinder. The output end of the hydraulic rod passes through the furnace shell, the inner liner, and the fixed frame and extends into the interior of the inner liner. An upper mold is fixedly connected to one end of the hydraulic rod inside the inner liner, and the upper mold corresponds to the lower mold.

[0011] Preferably, the vacuum assembly includes a vacuum pump, which is fixedly installed at the upper end of the furnace shell, and a vacuum tube is fixedly installed on the vacuum pump. The end of the vacuum tube away from the vacuum pump passes through the furnace shell and communicates with the inner liner, and a vacuum valve is fixedly installed on the vacuum tube.

[0012] Preferably, the heating assembly includes a plurality of heating rods, all of which are fixedly mounted on the fixed frame.

[0013] Preferably, the water-cooling assembly includes a water tank and a distributor. The distributor is fixedly installed on the fixed frame, and a plurality of evenly distributed water-cooling pipes are fixedly installed on the distributor. The plurality of water-cooling pipes and a plurality of heating rods are arranged alternately on the fixed frame. The water tank is fixedly installed on the upper end of the furnace shell, and a condenser is provided inside the water tank. One end of the water tank is fixedly connected to a return pipe, and the other end of the water tank is fixedly connected to a water outlet pipe. The ends of the water outlet pipe and the return pipe away from the water tank are fixedly connected to a multi-port connector. A connecting pipe is fixedly connected to the multi-port connector. The end of the connecting pipe away from the multi-port connector is connected to the distributor, and a bidirectional water pump is fixedly installed on the connecting pipe.

[0014] Preferably, a reflux valve is fixedly installed on the reflux pipe, and a water outlet valve is fixedly installed on the water outlet pipe.

[0015] Preferably, a vacuum gauge is fixedly installed inside the furnace shell, and a temperature sensor is provided on one side of the vacuum gauge, with the temperature sensor fixedly installed inside the furnace shell.

[0016] Preferably, both the furnace shell and the inner liner are hinged to a furnace door on the same side.

[0017] Preferably, an exhaust pipe is fixedly connected to the furnace shell, and an exhaust valve is fixedly installed on the exhaust pipe.

[0018] This utility model has at least the following beneficial effects:

[0019] 1. This utility model first creates a vacuum by removing air from the inner liner using a vacuum assembly to avoid interference from impurities. Then, the heating assembly is activated to hot press the workpiece. The fixed fan and the mobile fan operate in sequence. The fixed fan continuously distributes heat evenly, while the mobile fan optimizes heat distribution. Together with the heating assembly, they allow the workpiece to heat up quickly and stabilize at the predetermined temperature, ensuring the hot pressing effect. After hot pressing, the heating assembly is turned off, and the water cooling assembly and the fan assembly work together. The water cooling assembly absorbs heat with circulating water, while the fan assembly accelerates heat exchange and airflow, promoting rapid cooling of the inner liner and the workpiece. This significantly reduces cooling time and effectively improves production efficiency. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 A schematic diagram of the overall structure of this utility model;

[0022] Figure 2 A cross-sectional view of the overall structure provided for this utility model;

[0023] Figure 3 A schematic diagram of the internal structure of the furnace shell provided by this utility model;

[0024] Figure 4 Partial structural schematic diagram provided for this utility model Figure 1 ;

[0025] Figure 5 Partial structural schematic diagram provided for this utility model Figure 2 ;

[0026] Figure 6 Partial structural schematic diagram provided for this utility model Figure 3 .

[0027] In the diagram, 1. Hot press furnace; 101. Furnace shell; 102. Inner liner; 2. Vacuum assembly; 201. Vacuum pump; 202. Vacuum tube; 203. Vacuum valve; 3. Fan assembly; 301. Fixing frame; 302. Fixed fan; 303. Guide rail; 304. Electric slider; 305. Moving fan; 4. Heating assembly; 401. Heating rod; 5. Water cooling assembly; 501. Water tank; 502. Diverter 503. Water-cooled pipe; 504. Condenser; 505. Return pipe; 506. Water outlet pipe; 507. Multi-way connector; 508. Connecting pipe; 509. Two-way water pump; 510. Return valve; 511. Water outlet valve; 6. Lower mold; 7. Lifting hydraulic cylinder; 8. Hydraulic rod; 9. Upper mold; 10. Vacuum gauge; 11. Temperature sensor; 12. Furnace door; 13. Exhaust pipe; 14. Exhaust valve. Detailed Implementation

[0028] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0029] like Figure 1 - Figure 6 As shown, the large vacuum hot press furnace for preparing porous carbon provided in this embodiment includes a hot press furnace 1. The hot press furnace 1 includes a furnace shell 101 and an inner liner 102. A vacuum component 2 is provided at the upper end of the furnace shell 101, and a blower component 3 is provided between the furnace shell 101 and the inner liner 102. A heating component 4 and a water cooling component 5 are provided on the blower component 3.

[0030] The blower assembly 3 includes a fixed frame 301, which is fixedly installed inside the furnace shell 101. Several evenly distributed fixed blowers 302 are fixedly installed on the inner sides of both the upper and lower ends of the fixed frame 301. Several evenly distributed guide rails 303 are fixedly installed on the fixed frame 301, and electric sliders 304 are slidably connected to the guide rails 303. Moving blowers 305 are fixedly installed on the electric sliders 304. The vacuum assembly 2 can extract air from the inner liner 102 to create a vacuum environment. Then, the heating assembly 4 performs hot pressing treatment on the workpiece inside the inner liner 102. At this time, the fixed blowers 302 on the fixed frame 301 start operating, ensuring even heat distribution. The heating components 4 and 3 are evenly distributed on the inner liner 102 to improve the hot pressing effect of the workpiece. The mobile fan 305, which is installed on the electric slider 304, can slide on the guide rail 303 to improve the uniformity of the workpiece heating. Through the cooperation of the heating component 4 and the fan component 3, the workpiece can be quickly heated to the predetermined temperature range and kept stable. After the workpiece is hot-pressed, the heating component 4 is turned off. At this time, through the synergistic effect of the water cooling component 5 and the fan component 3, the water cooling component 5 removes heat through circulating water, and the fan component 3 accelerates heat exchange and air circulation, which enables the inner liner 102 and the workpiece to cool down quickly, thereby greatly reducing the cooling time and improving production efficiency.

[0031] Further, such as Figure 1 - Figure 6 As shown, the inner liner 102 is located inside the fixed frame 301, and the lower mold 6 is fixedly installed inside the inner liner 102. The lifting hydraulic cylinder 7 is fixedly installed on the furnace shell 101. The output end of the lifting hydraulic cylinder 7 is fixedly connected to the hydraulic rod 8. The output end of the hydraulic rod 8 passes through the furnace shell 101, the inner liner 102 and the fixed frame 301 and extends into the inner liner 102. The end of the hydraulic rod 8 located inside the inner liner 102 is fixedly connected to the upper mold 9. The upper mold 9 corresponds to the lower mold 6. When the material is placed in the lower mold 6, the lifting hydraulic cylinder 7 pushes the hydraulic rod 8 to drive the upper mold 9 to descend and close with the lower mold 6, applying pressure to the workpiece. Combined with the high temperature environment of the hot press furnace 1, the workpiece undergoes physical and chemical changes under the shape and pressure conditions defined by the mold, thereby forming a product with the required specific shape and structure.

[0032] Further, such as Figure 1 - Figure 6As shown, the vacuum assembly 2 includes a vacuum pump 201, which is fixedly installed on the upper end of the furnace shell 101. A vacuum tube 202 is fixedly installed on the vacuum pump 201. The end of the vacuum tube 202 away from the vacuum pump 201 passes through the furnace shell 101 and is connected to the inner liner 102. A vacuum valve 203 is fixedly installed on the vacuum tube 202. When the vacuum pump 201 is turned on, the air in the inner liner 102 can be extracted through the vacuum tube 202, which can quickly reduce the gas pressure in the furnace and create a vacuum environment. The vacuum valve 203 can control the opening and closing of the vacuum tube 202 and the gas flow rate, ensuring that the gas is discharged smoothly and maintaining the stability of the vacuum level when the vacuum pump 201 is working.

[0033] Further, such as Figure 1 - Figure 6 As shown, the heating component 4 includes several heating rods 401, which are all fixedly installed on the fixed frame 301. During the hot pressing process, the heating rods 401 provide the required heat to the workpiece inside the inner liner 102 to promote the hot pressing reaction of the material.

[0034] Further, such as Figure 1 - Figure 6As shown, the water-cooled assembly 5 includes a water tank 501 and a distributor 502. The distributor 502 is fixedly mounted on a fixed frame 301, and several evenly distributed water-cooled pipes 503 are fixedly mounted on the distributor 502. The several water-cooled pipes 503 and several heating rods 401 are arranged alternately on the fixed frame 301. The water tank 501 is fixedly mounted on the upper end of the furnace shell 101, and a condenser 504 is installed inside the water tank 501. One end of the water tank 501 is fixedly connected to a return pipe 505, and the other end of the water tank 501 is fixedly connected to a water outlet pipe 506. The ends of the water outlet pipe 506 and the return pipe 505 away from the water tank 501 are fixedly connected to a multi-way connector 507. A connecting pipe 508 is fixedly connected to the multi-way connector 507. The end of the connecting pipe 508 away from the multi-way connector 507 is connected to the distributor 502, and a bidirectional water pump 509 is fixedly mounted on the connecting pipe 508. A return valve 510 is fixedly installed on the return pipe 505, and an outlet valve 511 is fixedly installed on the outlet pipe 506. When cooling is required, the outlet valve 511 is opened first, the return valve 510 is closed, and the bidirectional water pump 509 is started. The water in the water tank 501 is pumped to the distributor 502 through the outlet pipe 506, the multi-port connector 507, and the connecting pipe 508. The distributor 502 diverts the water to the water cooling pipe 503 for heat exchange. Because the water cooling pipe 503 is in close contact with the inner tank 102, it quickly absorbs heat and raises the water temperature. At this time, the outlet valve 511 is closed, the return valve 510 is opened, and the water pump is started again. The hot water is pumped back to the water tank 501 through the return pipe 505. The condenser 504 inside the water tank 501 can cool the returned hot water to maintain the low temperature of the circulating water and ensure cooling efficiency, thereby achieving rapid cooling of the workpiece.

[0035] Further, such as Figure 1 - Figure 6 As shown, a vacuum gauge 10 is fixedly installed inside the furnace shell 101. A temperature sensor 11 is provided on one side of the vacuum gauge 10. The temperature sensor 11 is fixedly installed inside the furnace shell 101. Furnace doors 12 are hinged to the same side of both the furnace shell 101 and the inner liner 102. An exhaust pipe 13 is fixedly connected to the furnace shell 101. An exhaust valve 14 is fixedly installed on the exhaust pipe 13. The vacuum gauge 10 can monitor the vacuum level inside the inner liner 102 in real time. The temperature sensor 11 can monitor the temperature change inside the inner liner 102. Together with the heating component 4 and the water cooling component 5, the hot pressing temperature can be controlled. The furnace door 12 facilitates the entry and exit of the workpiece. When cooling the workpiece, the exhaust valve 14 is opened, and the air inside the furnace shell 101 can be discharged to the outside through the exhaust pipe 13 by the fan component 3 to achieve heat exchange with the outside air.

[0036] like Figure 1 - Figure 6 As shown in this embodiment, the principle of the large vacuum hot press furnace for preparing porous carbon is as follows:

[0037] First, open both furnace doors 12, place the workpiece on the lower mold 6, and then close the furnace doors 12 sequentially to seal the furnace. Open the vacuum valve 203 and vacuum pump 201, and extract the air from the inner liner 102 through the vacuum tube 202 to rapidly reduce the furnace pressure. The vacuum level inside the inner liner 102 is monitored in real time by the vacuum gauge 10. When a suitable vacuum level is reached, close the vacuum valve 203 and vacuum pump 201 to maintain the vacuum level inside the inner liner 102. Then, the workpiece inside the inner liner 102 is hot-pressed using the heating assembly 4. At this time, the fixed fan 302 and the moving fan 305 start operating to evenly distribute heat on the inner liner 102. The temperature sensor 11 monitors the temperature change inside the inner liner 102. When the temperature reaches a certain value, the lifting hydraulic cylinder 7 is activated, and the hydraulic rod 8 drives the upper mold 9 and lower mold 6 to press against each other, hot-pressing the workpiece on the lower mold 6. After the workpiece is hot-pressed... The heating component 4 is turned off, the outlet valve 511 is opened, the return valve 510 is closed, and the bidirectional water pump 509 is started. The water in the water tank 501 is pumped to the distributor 502 through the outlet pipe 506, multi-port connector 507, and connecting pipe 508. The distributor 502 diverts the water to the water cooling pipe 503 for heat exchange. The water cooling pipe 503 is in close contact with the inner tank 102 and quickly absorbs heat, causing the water temperature to rise. At this time, the outlet valve 511 is closed, the return valve 510 is opened, and the water pump is started again. The hot water is pumped back to the water tank 501 through the return pipe 505. The condenser 504 inside the water tank 501 cools the returned hot water to maintain the low temperature of the circulating water. The exhaust valve 14 is opened. When the fixed fan 302 and the mobile fan 305 are running, the air in the furnace shell 101 is discharged to the outside through the exhaust pipe 13 to exchange heat with the outside air, thereby achieving rapid cooling of the workpiece.

[0038] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0039] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0040] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A large vacuum hot press furnace for preparing porous carbon, comprising a hot press furnace (1), characterized in that: The hot press (1) includes a furnace shell (101) and an inner liner (102). A vacuum assembly (2) is provided at the upper end of the furnace shell (101), and a fan assembly (3) is provided between the furnace shell (101) and the inner liner (102). A heating assembly (4) and a water cooling assembly (5) are provided on the fan assembly (3). The fan assembly (3) includes a fixed frame (301), which is fixedly installed inside the furnace shell (101). Several evenly distributed fixed fans (302) are fixedly installed on the inner sides of the upper and lower ends of the fixed frame (301). Several evenly distributed guide rails (303) are fixedly installed on the fixed frame (301). Electric sliders (304) are slidably connected to the guide rails (303). Mobile fans (305) are fixedly installed on the electric sliders (304).

2. A large vacuum hot press furnace for preparing porous carbon according to claim 1, characterized in that: The inner liner (102) is disposed inside the fixed frame (301), and a lower mold (6) is fixedly installed inside the inner liner (102).

3. A large vacuum hot press furnace for preparing porous carbon according to claim 2, characterized in that: A lifting hydraulic cylinder (7) is fixedly installed on the furnace shell (101). A hydraulic rod (8) is fixedly connected to the output end of the lifting hydraulic cylinder (7). The output end of the hydraulic rod (8) passes through the furnace shell (101), the inner liner (102), and the fixed frame (301) and extends into the interior of the inner liner (102). An upper mold (9) is fixedly connected to one end of the hydraulic rod (8) inside the inner liner (102). The upper mold (9) corresponds to the lower mold (6).

4. A large vacuum hot press furnace for preparing porous carbon according to claim 1, characterized in that: The vacuum assembly (2) includes a vacuum pump (201), which is fixedly installed on the upper end of the furnace shell (101). A vacuum tube (202) is fixedly installed on the vacuum pump (201). One end of the vacuum tube (202) away from the vacuum pump (201) passes through the furnace shell (101) and is connected to the inner liner (102). A vacuum valve (203) is fixedly installed on the vacuum tube (202).

5. A large vacuum hot press furnace for preparing porous carbon according to claim 1, characterized in that: The heating assembly (4) includes a plurality of heating rods (401), and the plurality of heating rods (401) are fixedly installed on the fixed frame (301).

6. A large vacuum hot press furnace for preparing porous carbon according to claim 5, characterized in that: The water-cooling assembly (5) includes a water tank (501) and a distributor (502). The distributor (502) is fixedly installed on the fixed frame (301), and a plurality of evenly distributed water-cooling pipes (503) are fixedly installed on the distributor (502). The plurality of water-cooling pipes (503) and a plurality of heating rods (401) are arranged alternately on the fixed frame (301). The water tank (501) is fixedly installed on the upper end of the furnace shell (101), and a condenser (504) is provided inside the water tank (501). One end of the water tank (501) is fixedly connected to a return pipe (505), and the other end of the water tank (501) is fixedly connected to a water outlet pipe (506). The ends of the water outlet pipe (506) and the return pipe (505) away from the water tank (501) are fixedly connected to a multi-port connector (507). A connecting pipe (508) is fixedly connected to the multi-port connector (507). The end of the connecting pipe (508) away from the multi-port connector (507) is connected to the distributor (502), and a bidirectional water pump (509) is fixedly installed on the connecting pipe (508).

7. A large vacuum hot press furnace for preparing porous carbon according to claim 6, characterized in that: A return valve (510) is fixedly installed on the return pipe (505), and an outlet valve (511) is fixedly installed on the outlet pipe (506).

8. A large vacuum hot press furnace for preparing porous carbon according to claim 1, characterized in that: A vacuum gauge (10) is fixedly installed inside the inner liner (102), and a temperature sensor (11) is provided on one side of the vacuum gauge (10). The temperature sensor (11) is fixedly installed inside the inner liner (102).

9. A large vacuum hot press furnace for preparing porous carbon according to claim 1, characterized in that: Furnace doors (12) are hinged to the same side of both the furnace shell (101) and the inner liner (102).

10. A large vacuum hot press furnace for preparing porous carbon according to claim 1, characterized in that: An exhaust pipe (13) is fixedly connected to the furnace shell (101), and an exhaust valve (14) is fixedly installed on the exhaust pipe (13).

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