Expanding furnace for producing graphite flakes

Abstract

The utility model provides an expansion furnace for producing graphite flakes. The expansion furnace comprises a furnace body and a sealing cover which is arranged on the furnace body and is used for sealing the furnace body, the heating tank is positioned on one side of the furnace body; the high-pressure gas conveying assembly is used for being communicated with the furnace body and conveying hot gas into the furnace body; the outer wall of the outer shell is sprayed with a waterproof material to form a waterproof layer, and the outer shell comprises a heat preservation layer; the heat preservation layer comprises a heat preservation plate, and a polystyrene plate is pasted to the outer wall of the heat preservation plate. The bulking furnace is simple in overall structure, good in heat preservation performance and capable of effectively preventing heat in the bulking furnace from losing.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite sheet manufacturing, in particular to an expansion furnace for producing graphite sheets. Background Art

[0002] The expansion furnace can expand solid materials, making them easier to process. The principle of graphite sheet expansion is to directly shoot a high-temperature airflow onto the object to be processed. The high-temperature heating of the graphite sheet increases the interlayer spacing of the graphite material, thereby forming an expanded graphite structure, improving its plasticity and resilience.

[0003] The existing expansion furnace has poor thermal insulation performance during use, which makes the heat in the expansion furnace very easy to lose, thereby increasing production costs. Even if the temperature inside the furnace cannot reach the required temperature, the graphite sheet cannot expand, which in turn affects the performance of the product.

[0004] Patent publication number CN2736725 discloses a high-efficiency, energy-saving graphite expansion furnace. This furnace comprises a furnace body, a feeding section, an air supply section, and a discharge device. Its main features are: the furnace body is composed of an outer cylindrical body and a furnace chamber. The upper and lower portions of the furnace chamber are conical, with the lower portion connected to the gas cylinder of the air supply section via an air duct. The feeding section, located on one side of the lower portion of the furnace body, consists of a fan and a rotary feeder mechanism. The discharge port of the rotary feeder mechanism is connected to the air inlet of the fan via a T-tube and communicates with the lower portion of the furnace chamber via a feed pipe. A vent is provided between the upper portion of the furnace body and the furnace roof, and a heat exchanger is installed between the furnace chamber top and the induced draft duct, which is connected to the gas-solid separator of the discharge device via the induced draft duct.

[0005] In view of this, how to solve the defects in the above technical solutions has become one of the problems to be solved urgently in the field of graphite sheet manufacturing technology. Utility Model Content

[0006] In view of the problems existing in the background technology, the present invention provides, on one hand, an expansion furnace for producing graphite sheets, comprising:

[0007] furnace body;

[0008] A sealing cover provided on the furnace body to seal the furnace body;

[0009] a heating tank located on one side of the furnace body;

[0010] A high-pressure gas transmission component for communicating with the furnace body and transmitting hot gas into the furnace body;

[0011] The partition is arranged inside the furnace body, and

[0012] The inner cavity of the furnace body is divided into an upper cavity and a lower cavity by the partition; and

[0013] The upper cavity of the furnace body is made of a double-layer shell composed of an inner shell and an outer shell; and

[0014] The outer wall of the shell is sprayed with water-proof material to form a water-proof layer, and

[0015] The outer shell includes a thermal insulation layer;

[0016] The insulation layer includes an insulation board, and

[0017] The outer wall of the insulation board is adhered with a polystyrene board, and

[0018] The polystyrene board is away from the inner shell.

[0019] Optionally, a cavity is provided between the inner shell and the outer shell, and

[0020] A heat circulation pipe is installed in the cavity.

[0021] The heat circulation pipe passes through the outer shell, and

[0022] The water inlet end of the heat circulation pipe is connected to the hot water outlet end of the heating tank;

[0023] The heat circulation pipeline also includes a heat circulation pipe water outlet, and

[0024] The water outlet end of the heat circulation pipe is connected to the liquid inlet end of the heating tank.

[0025] Optionally, the inner wall of the furnace is provided with a pipe, and

[0026] The pipes pass through the inner and outer walls in sequence, and

[0027] The first circulation pipe is connected through the pipe outlet provided on the outer wall, and

[0028] The heating tank is connected via the first circulation pipe.

[0029] Optionally, the heating tank includes a second circulation pipe, which

[0030] Connected to the furnace body through the second circulation pipe,

[0031] The outlet end of the second circulation pipe passes through the outer shell and the inner shell in sequence, and

[0032] Extending into the furnace body.

[0033] Optionally, the sealing cover is provided with a rubber seal, and

[0034] The rubber seal is provided with a sealing ring around its circumference.

[0035] The inner wall of the furnace body is provided with a groove for the raised end portion of the sealing ring to extend into.

[0036] Optionally, an injection assembly is provided on the top of the sealing cover located at the position of the tank body, and

[0037] The injection assembly includes a screw, and

[0038] A sealing gasket is provided on the screw at a position away from the sealing cover.

[0039] The screw passes through the threaded hole provided on the sealing cover, and

[0040] Insert into the injection cavity.

[0041] Optionally, a vent pipe is provided in the rubber seal, and

[0042] The other end of the vent pipe is connected to the air port of the injection cavity.

[0043] In summary, the beneficial effects of the present invention are:

[0044] The utility model has a simple overall structure and good thermal insulation performance, which can effectively prevent heat loss in the expansion furnace. Since the upper cavity of the furnace body is made of a double-layer shell composed of an inner shell and an outer shell, heat loss to the outside is effectively reduced, and a waterproof layer is formed by spraying a waterproof material on the outer wall of the outer shell. At the same time, a polystyrene board is provided on the outer shell away from the inner shell. The polystyrene board and the waterproof layer make it have good moisture-proof performance, and can effectively reduce heat conduction and prevent heat dissipation. At the same time, a heat circulation pipe is added to the cavity between the inner and outer shells of the outer shell to increase the heat of the furnace body through the heat circulation pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic diagram of the overall structure of an embodiment of an expansion furnace for producing graphite sheets according to the present invention;

[0046] Figure 2 This is a schematic diagram of the heating tank structure of an embodiment of an expansion furnace for producing graphite sheets according to the present invention;

[0047] Figure 3 This is a schematic diagram of the furnace structure of an embodiment of an expansion furnace for producing graphite sheets according to the present invention;

[0048] Figure 4 This is a schematic diagram of the structure of the furnace body of an embodiment of an expansion furnace for producing graphite sheets according to the present invention;

[0049] Figure 5 This is a schematic structural diagram of a sealing cover of an embodiment of an expansion furnace for producing graphite sheets according to the present invention;

[0050] Figure 6This is a schematic structural diagram of a hydraulic cover opening assembly of an embodiment of an expansion furnace for producing graphite sheets according to the utility model;

[0051] Figure 7 For this utility model Figure 5 Enlarged view of the structure at position A in the middle.

[0052] Reference numerals:

[0053] 100. Extrusion furnace;

[0054] 10. Injection assembly; 101. Screw; 102. Sealing gasket; 103. Vent tube; 104. Air port; 105. Injection cavity;

[0055] 20. Sealing cover; 201. Rubber seal; 202. Sealing ring; 203. Raised end;

[0056] 30. Furnace body; 301. Upper cavity; 302. Lower cavity;

[0057] 303, heat circulation pipe; 3031, water inlet end of heat circulation pipe; 3032, water outlet end of heat circulation pipe;

[0058] 304, waterproof layer; 305, thermal insulation layer; 306, inner shell; 307, cavity; 308, condenser;

[0059] 40. Hydraulic cover opening assembly; 401. Connector; 402. Mounting frame; 403. Hinge connector; 404. Hydraulic cylinder;

[0060] 50. Heating tank; 501. High-pressure gas transmission assembly; 502. First circulation pipeline; 503. Exhaust pipeline; 504. Second circulation pipeline; 505. Gas outlet;

[0061] 60. Bracket;

[0062] 70. Partition. DETAILED DESCRIPTION

[0063] In order to make the purpose, technical solutions, and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. Although exemplary embodiments are disclosed in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to facilitate a more thorough understanding of the present invention and to fully convey the concept of the present invention to those skilled in the art.

[0064] In the description of this specification, the description with reference to the terms "certain embodiments", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are contradictory.

[0065] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0066] like Figures 1 to 7 As shown, this embodiment provides an expansion furnace for producing graphite sheets, including an expansion furnace 100, wherein the expansion furnace 100 includes a furnace body 30 for placing graphite sheets and expanding the graphite sheets, and a sealing cover 20 provided on the furnace body 30 to seal the furnace body 30.

[0067] A heating tank 50 is provided on one side of the furnace body 30. The heating tank 50 can be a YK series electric heating tank. The heating tank 50 is provided with a high-pressure gas transmission component 501 for communicating with the furnace body 30 and transmitting hot air into the furnace body 30. Hot air is transmitted to the inside of the furnace body 30 through the high-pressure gas transmission component 501 to heat and expand the graphite sheet.

[0068] Since traditional expansion furnaces have poor thermal insulation performance during use, the heat in the expansion furnace is easily lost, thereby increasing production costs. If the temperature inside the furnace cannot reach the required temperature, the graphite sheet will not expand, thereby affecting the performance of the product. To solve the above technical problems, please refer to Figures 1 to 6 As shown, a partition 70 is provided inside the furnace body 30, and the inner cavity of the furnace body 30 is divided into an upper cavity 301 and a lower cavity 302 by the partition 70; and the upper cavity of the furnace body 30 is made of a double-layer shell composed of an inner shell 306 and an outer shell, thereby effectively reducing heat loss to the outside.

[0069] A cavity is provided between the inner shell 306 and the outer shell, and a heat circulation pipe 303 is fixedly installed in the cavity by means of a fixing screw or the like. The heat circulation pipe 303 passes through the outer shell, and high-temperature liquid is transported into the heat circulation pipe 303 through a water inlet 3031 of the heat circulation pipe. The water inlet 3031 of the heat circulation pipe is connected to the hot water outlet of the heating tank.

[0070] The heat circulation pipe 303 further includes a heat circulation pipe water outlet 3032 , and is connected to the liquid inlet of the heating tank 50 via the heat circulation pipe water outlet 3032 .

[0071] In this embodiment, the heating tank is started to heat the liquid in the heating tank, and at the same time the high-temperature liquid in the heating tank is transported to the heat circulation pipe 303, thereby heating the furnace body and improving the heat preservation capacity of the expansion furnace.

[0072] Furthermore, the outer wall of the outer shell is sprayed with a waterproof material to form a waterproof layer 304, and the outer shell includes a thermal insulation layer 305, the thermal insulation layer includes an insulation board, and the outer wall of the insulation board is adhered with a polystyrene board; the polystyrene board is away from the inner shell.

[0073] In this embodiment, the upper cavity of the furnace body 30 is made of a double-layer shell composed of an inner shell 306 and an outer shell, thereby effectively reducing heat loss to the outside, and a waterproof layer 304 is formed by spraying a waterproof material on the outer wall of the outer shell. At the same time, a polystyrene board is provided on the outer shell away from the inner shell. The polystyrene board and the waterproof layer have good moisture-proof properties, and can effectively reduce heat conduction and prevent heat dissipation. At the same time, a heat circulation pipe 303 is added in the cavity between the inner and outer shells of the outer shell to increase the heat of the furnace body through the heat circulation pipe.

[0074] Furthermore, a pipe is provided on the inner wall of the furnace body 30, and the pipe passes through the inner wall and the outer wall in sequence, and is connected to the first circulation pipe 502 through the pipe outlet 505 provided on the outer wall, and is connected to the heating tank 50 through the first circulation pipe 502;

[0075] The heating tank 50 includes a second circulation pipe 504 , which is connected to the furnace body 30 through the second circulation pipe 504 . The outlet end of the second circulation pipe 504 passes through the outer shell and the inner shell in sequence and extends into the furnace body 30 .

[0076] In this embodiment, the liquid is heated by the heating tank, and the hot gas generated after the heating is transported to the furnace body 30 through the second circulation pipe for heating.

[0077] In actual application, since the sealing cover needs to be opened and closed frequently to put materials into the furnace body, if the rubber seal is thick, the sealing cover needs to be opened and closed frequently, resulting in the rubber seal 201 set on the sealing cover being easily damaged. If the rubber seal is thin, the sealing performance is poor. In order to solve the above technical problems, please refer to Figure 1 and Figure 5 and Figure 7 As shown, the sealing cover 20 is provided with a rubber seal 201, and the rubber seal 201 is provided with a sealing ring 202 around its circumference, and the inner wall of the furnace body is provided with a groove for the raised end 203 of the sealing ring 202 to extend into, and the raised end is with.

[0078] An injection assembly 10 is provided at the top of the sealing cover 20 located at the tank body. The injection assembly 10 includes a screw 101. A sealing gasket 102 is provided on the screw 101 at a position away from the sealing cover. The screw 101 passes through a threaded hole provided on the sealing cover 20 and extends into an injection cavity 105. The other end of the injection cavity 105 extends into the tank body.

[0079] In this embodiment, the screw 101 is rotated to drive the sealing gasket 102 to slide in the injection cavity 105 .

[0080] Furthermore, a vent tube 103 is provided in the rubber seal 201 , and is used to communicate with an external high-pressure conveyor through the vent tube 103 , and the other end of the vent tube 103 is connected to the air port 104 of the injection cavity 105 .

[0081] When the sealing cover is in a buckled and sealed state, the screw 101 is rotated to make it spirally rotate in the threaded hole, thereby driving the sealing gasket to move upward, so that the sealing gasket leaves the air port 104. Then, the external high-pressure conveyor is started to convey 0.8 MPA compressed air into the sealing ring 202 through the vent pipe 103, filling the gap between the raised end 203 and the groove body. The air pressure is used to make the raised end of the sealing ring fit better, thereby improving the reliability of the sealing gasket.

[0082] When the sealing cover needs to be opened, it is only necessary to move the sealing gasket upward to open the air port. At this time, the compressed air will automatically escape through the air port, releasing the restriction between the raised end 203 and the groove body, so that the gap between the raised end and the groove body is filled. When the sealing cover 20 is opened, the friction coefficient can be reduced, thereby reducing the probability of damage to the rubber seal and extending its service life.

[0083] See also Figure 6As shown, a hydraulic cover opening assembly 40 is fixedly mounted on the sealing cover 20, and the hydraulic cover opening assembly 40 includes a connecting member 401, and the connecting member 401 is welded to the sealing cover;

[0084] The hydraulic cover opening assembly also includes a hydraulic cylinder 404, which is fixedly mounted on the outer wall of the furnace body by fastening screws, and the hydraulic cylinder 404 is preferably a telescopic hydraulic cylinder, and the protruding end of the hydraulic cylinder 404 is connected to the mounting frame 402 of the connector 401 through a hinge connector 403.

[0085] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art will appreciate that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. An expansion furnace for producing graphite sheets, characterized in that: include: furnace body; A sealing cover provided on the furnace body to seal the furnace body; a heating tank located on one side of the furnace body; A high-pressure gas transmission component for communicating with the furnace body and transmitting hot gas into the furnace body; The partition is arranged inside the furnace body, and The inner cavity of the furnace body is divided into an upper cavity and a lower cavity by the partition; and The upper cavity of the furnace body is made of a double-layer shell composed of an inner shell and an outer shell; and The outer wall of the shell is sprayed with water-proof material to form a water-proof layer, and The outer shell includes a thermal insulation layer; The insulation layer includes an insulation board, and The outer wall of the insulation board is adhered with a polystyrene board, and The polystyrene board is away from the inner shell.

2. The expansion furnace for producing graphite sheets according to claim 1, characterized in that: A cavity is provided between the inner shell and the outer shell, and A heat circulation pipe is installed in the cavity. The heat circulation pipe passes through the outer shell, and The water inlet end of the heat circulation pipe is connected to the hot water outlet end of the heating tank; The heat circulation pipeline also includes a heat circulation pipe water outlet, and The water outlet end of the heat circulation pipe is connected to the liquid inlet end of the heating tank.

3. The expansion furnace for producing graphite sheets according to claim 1, characterized in that: The inner wall of the furnace body is provided with a pipe, and The pipes pass through the inner and outer walls in sequence, and The first circulation pipe is connected through a pipe air outlet arranged on the outer wall, and the heating tank is connected through the first circulation pipe.

4. The expansion furnace for producing graphite sheets according to claim 3, characterized in that: The heating tank includes a second circulation pipe, which Connected to the furnace body through the second circulation pipe, The outlet end of the second circulation pipe passes through the outer shell and the inner shell in sequence and extends into the furnace body.

5. The expansion furnace for producing graphite sheets according to claim 1, characterized in that: The sealing cover is provided with a rubber seal, and The rubber seal is provided with a sealing ring around its circumference. The inner wall of the furnace body is provided with a groove for the raised end portion of the sealing ring to extend into.

6. The expansion furnace for producing graphite sheets according to claim 5, characterized in that: The top of the sealing cover located at the position of the tank body is provided with an injection assembly, and the injection assembly includes a screw, and A sealing gasket is provided on the screw at a position away from the sealing cover. The screw passes through a threaded hole provided on the sealing cover and extends into the injection cavity.

7. The expansion furnace for producing graphite sheets according to claim 6, characterized in that: A vent pipe is provided in the rubber seal, and The other end of the vent pipe is connected to the air port of the injection cavity.

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