High-efficiency silicon carbide resistance furnace capable of recycling waste heat

Abstract

The invention relates to the technical field of resistance furnaces, and discloses a waste heat recycling high-efficiency silicon carbide resistance furnace which comprises a furnace body, the bottom of the furnace body is fixedly connected with a device base provided with an electric control system, the front face of the furnace body is movably connected with a furnace door, and the middle of one side of the furnace door is fixedly connected with a connecting mechanism. The furnace body comprises a furnace shell, a furnace lining, a hearth, a storage tank, a water inlet, a heat absorption pipe, a steam layer and a steam outlet, the furnace lining made of a thermal insulation material is movably connected to the interior of the furnace shell, the hearth is movably connected to the interior of the furnace lining, the water inlet is fixedly connected to the top of one side of the furnace shell, and the heat absorption pipe is movably connected to the other side of the water inlet; heat emitted by the furnace lining is absorbed through the heat absorption pipes, water in the heat absorption pipes is heated into high-temperature steam, the high-temperature steam is evenly distributed on the steam layer to heat the bottom of the hearth, and objects in the heating chamber can be heated more evenly through heat preservation of the furnace lining and steam heating of the steam layer.

Description

Technical Field

[0001] The invention relates to the technical field of resistance furnaces, and more particularly to a high-efficiency silicon carbide resistance furnace capable of recycling waste heat. Background Art

[0002] Silicon carbide is an inorganic substance made of quartz sand, stone tar (or coal coke), sawdust (salt is needed to produce green silicon carbide) and other raw materials through high-temperature smelting in a resistance furnace. Silicon carbide is a semiconductor that exists in nature in the form of an extremely rare mineral moissanite. It has been mass-produced as powder and crystals and used as abrasives, etc. Among non-oxide high-tech refractory raw materials such as C, N, and B, silicon carbide is the most widely used and economical one. It can be called corundum or refractory sand; a resistance furnace is an industrial furnace that uses electric current to heat the electric heating element or heating medium in the furnace, thereby heating the workpiece or material. It uses electric current to pass through the resistance material to generate heat energy. Resistance furnaces are used in the machinery industry for heating metals before forging, heating metal heat treatment, brazing, powder metallurgy sintering, glass ceramic baking and annealing, melting low-melting-point metals, drying sand molds and paint films, etc. Silicon carbide resistance furnaces are mainly composed of silicon carbide resistance rods, thermal insulation layers, and electronic control systems. Silicon carbide resistance rods are heating elements supported by silicon carbide materials. The thermal insulation layer is mainly composed of high-temperature heat-resistant materials such as ceramic fibers and aluminum silicate fibers. The working principle of silicon carbide resistance furnaces is to use the heat generated by silicon carbide resistance rods to heat the heating object to a specified temperature. Silicon carbide resistance rods have a large resistance value and strong thermal conductivity, and can generate a high-temperature and high-heat heat source.

[0003] The common resistance furnace heating chamber is usually a cube structure, and the inner wall of the cube chamber is installed with a heating resistor. The objects in the resistance furnace are usually heated by the heat generated by the heating resistor and the energy transferred by the air thermal radiation. In order to place the objects, the heating resistor is generally not installed at the bottom of the heating chamber, which makes the heat distribution in the heating chamber uneven, resulting in uneven heating of the heated objects; secondly, most of the heat energy generated by the heating resistor is used to process the objects, but some of the heat energy is still wasted in the form of heat dissipation. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-efficiency silicon carbide resistance furnace with waste heat recycling to solve the problems existing in the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a high-efficiency silicon carbide resistance furnace for waste heat recycling, comprising a furnace body, a device base for installing an electric control system is fixedly connected to the bottom of the furnace body, a furnace door is movably connected to the front of the furnace body, and a connecting mechanism is fixedly connected to the middle of one side of the furnace door;

[0006] The furnace body includes a furnace shell, a furnace lining, a furnace, a storage tank, a water inlet, a heat absorption pipe, a steam layer and a steam outlet. The furnace shell is movably connected to a furnace lining composed of a thermal insulation material, the furnace lining is movably connected to the furnace, heating elements are fixedly installed on both sides and the top of the furnace, a storage tank is provided in the middle of the furnace, a water inlet is fixedly connected to the top of one side of the furnace shell, a heat absorption pipe is movably connected to the other side of the water inlet, a steam layer is movably connected to the other side of the bottom of the heat absorption pipe, and a steam outlet is movably connected to the other side of the steam layer.

[0007] Furthermore, the base of the device includes a base body, a heat dissipation grille, a receiving slot, a digital display panel, a switch button and a function button. The middle of both sides of the base body are movably connected with the heat dissipation grille, and the middle of the front side of the base body is provided with a receiving slot.

[0008] Furthermore, a digital display panel is fixedly connected to one side of the front of the accommodating slot, a switch button of an electrical system is fixedly connected to the bottom of the middle part of the front of the accommodating slot, and function buttons for realizing various functions are fixedly connected to the bottom of the other side of the front of the accommodating slot.

[0009] Furthermore, the furnace door includes a door panel, a hinge and a seal. The top and bottom of the other side of the door panel are fixedly connected with hinges, and the middle of the back side of the door panel is fixedly connected with a seal to seal the furnace chamber facing the storage slot.

[0010] Furthermore, the connecting mechanism includes a buckle base, a fixing screw, a buckle groove, a pressing plate base, a connecting plate, a rotating plate, a wrench, a rotating rod and a buckle ring. The other side of the buckle base is fixedly connected to one side of the furnace body, and a fixing screw is movably connected to the middle part of the other side of the buckle base. A buckle groove is provided on the back side of the buckle base.

[0011] Furthermore, the other side of the tablet pressing base is fixedly connected to one side of the furnace door, and a connecting plate is fixedly connected to the back side of the middle part of one side of the tablet pressing base, and the top and bottom of the connecting plate are movably connected to a rotating plate installed by bolts.

[0012] Furthermore, a wrench is fixedly connected to the front side of the rotating plate, a rotating rod is movably connected to the middle of the top of the rotating plate, buckles are movably connected to the top and bottom of the rotating rod, and the back side of the buckle is matched with the buckle groove.

[0013] Technical effects and advantages of the present invention:

[0014] 1. The present invention provides a steam layer, and heats the furnace and the storage tank through the heating elements installed inside the furnace. At the same time, the heat in the furnace is insulated by the furnace lining, and the heat is dissipated from the outside of the furnace lining and absorbed by the heat absorbing tube to heat the water in the heat absorbing tube. When the water in the heat absorbing tube runs to the steam layer, the water has been heated into steam by the waste heat, and the steam is evenly distributed in the steam layer. The high-temperature steam raises the temperature of the heating chamber from the bottom of the furnace. The heat insulation of the furnace lining and the steam heating of the steam layer are conducive to making the objects in the heating chamber heated more evenly.

[0015] 2. The present invention transports the steam in the steam layer out from the steam outlet, and the steam at the steam outlet is collected and concentrated for reuse. The high-temperature steam can be used to drive a turbine generator to generate electricity, or the high-temperature steam can be used to directly heat products and materials, which is beneficial to improving energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the side section of the furnace body of the present invention.

[0018] Figure 3 It is a structural schematic diagram of the bottom cross section of the furnace body of the present invention.

[0019] Figure 4 It is a structural schematic diagram of the furnace door of the present invention.

[0020] Figure 5 It is a structural schematic diagram of the connecting mechanism of the present invention.

[0021] The accompanying drawings are marked as follows: 1. furnace body; 101. furnace shell; 102. furnace lining; 103. furnace; 104. storage tank; 105. water inlet; 106. heat absorption pipe; 107. steam layer; 108. steam outlet; 2. device base; 201. base body; 202. heat dissipation grille; 203. receiving tank; 204. digital display panel; 205. switch button; 206. function button; 3. furnace door; 301. door panel; 302. hinge; 303. seal; 4. connecting mechanism; 401. buckle base; 402. fixing screw; 403. buckle notch; 404. pressing plate base; 405. connecting plate; 406. rotating plate; 407. wrench; 408. rotating rod; 409. buckle. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The high-efficiency silicon carbide resistance furnace for waste heat recycling involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0023] Reference Figure 1-Figure 5 The present invention provides a high-efficiency silicon carbide resistance furnace for waste heat recycling, comprising a furnace body 1, a device base 2 for installing an electric control system is fixedly connected to the bottom of the furnace body 1, a furnace door 3 is movably connected to the front of the furnace body 1, and a connecting mechanism 4 is fixedly connected to the middle of one side of the furnace door 3;

[0024] The furnace body 1 includes a furnace shell 101, a furnace lining 102, a furnace 103, a storage tank 104, a water inlet 105, a heat absorbing pipe 106, a steam layer 107 and a steam outlet 108. The furnace shell 101 is movably connected to the furnace lining 102 composed of a heat-insulating material, and the furnace lining 102 is movably connected to the furnace 103. Heating elements are fixedly installed on both sides and the top of the furnace 103. A storage tank 104 is provided in the middle of the furnace 103. The top of one side of the furnace shell 101 is fixedly connected to the water inlet 105, and the other side of the water inlet 105 is movably connected to the heat absorbing pipe 106. The other side of the bottom of the heat absorbing pipe 106 is movably connected to the steam layer 107. The steam layer A steam outlet 108 is movably connected to the other side of 107, and the furnace 103 and the storage tank 104 are heated by the heating element installed inside the furnace 103. At the same time, the heat in the furnace 103 is insulated by the furnace lining 102, and part of the heat is dissipated from the outside of the furnace lining 102 and absorbed by the heat absorption tube 106, heating the water in the heat absorption tube 106. When the water in the heat absorption tube 106 flows to the steam layer 107, the water has been heated into steam by the waste heat, and the steam is evenly distributed in the steam layer 107. The high-temperature steam increases the temperature of the heating chamber from the bottom of the furnace 103, and the heat preservation of the furnace lining 102 and the steam heating of the steam layer 107 are conducive to making the objects in the heating chamber heated more evenly.

[0025] In a preferred embodiment, the device base 2 includes a base body 201, a heat dissipation grille 202, a receiving groove 203, a digital display panel 204, a switch button 205 and a function button 206. The heat dissipation grille 202 is movably connected to the middle of both sides of the base body 201, and a receiving groove 203 is opened in the middle of the front of the base body 201. Air is blown into the base body 201 from the heat dissipation grille 202 to dissipate heat from the inside of the base body 201, so as to reduce the influence of the high temperature generated by the furnace body 1 on the electrical control system in the device base 2.

[0026] In a preferred embodiment, a digital display panel 204 is fixedly connected to one side of the front of the accommodating groove 203, a switch button 205 of the electrical system is fixedly connected to the bottom of the middle part of the front of the accommodating groove 203, and a function button 206 for realizing various functions is fixedly connected to the bottom of the other side of the front of the accommodating groove 203. Parameters such as the temperature and time of the object being heated can be displayed through the digital display panel 204, and the time required for heating the object can be timed through the function button 206.

[0027] In a preferred embodiment, the furnace door 3 includes a door panel 301, a hinge 302 and a seal 303. The top and bottom of the other side of the door panel 301 are fixedly connected with the hinge 302. The middle part of the back side of the door panel 301 is fixedly connected with the seal 303 facing the storage slot 104 to seal the furnace 103. By closing the door panel 301, the seal 303 fits and seals the furnace 103 and the storage slot 104. The furnace 103 and the seal 303 are made of the same material. After sealing, the heat loss in the storage slot 104 is reduced.

[0028] In a preferred embodiment, the connecting mechanism 4 includes a buckle base 401, a fixing screw 402, a buckle groove 403, a pressing plate base 404, a connecting plate 405, a rotating plate 406, a wrench 407, a rotating rod 408 and a buckle 409. The other side of the buckle base 401 is fixedly connected to one side of the furnace body 1, and the middle part of the other side of the buckle base 401 is movably connected with a fixing screw 402, and a buckle groove 403 is provided on the back of the buckle base 401.

[0029] In a preferred embodiment, the other side of the tablet pressing base 404 is fixedly connected to one side of the furnace door 3, and the back side of the middle part of one side of the tablet pressing base 404 is fixedly connected with a connecting plate 405, and the top and bottom of the connecting plate 405 are movably connected with a rotating plate 406 installed by bolts.

[0030] In a preferred embodiment, a wrench 407 is fixedly connected to the front side of the rotating plate 406, and a rotating rod 408 is movably connected to the middle part of the top of the rotating plate 406. A buckle 409 is movably connected to the top and bottom of the rotating rod 408, and the back side of the buckle 409 is adapted to the buckle slot 403. The rotating plate 406 is driven by the wrench 407 to rotate with the connection between the rotating plate 406 and the connecting plate 405 as the fulcrum. The wrench 407 moves toward the back side to drive the rotating rod 408 and the buckle 409 to move toward the back side, and the buckle 409 moves to the buckle base 401 and is clamped into the buckle slot 403. Then the wrench 407 is moved toward the front side so that the back side of the buckle 409 is adapted to and clamped to the buckle slot 403, which is conducive to quickly opening and closing the furnace door 3. Not only is the furnace door 3 firmly connected to the furnace body 1, but the opening and closing of the furnace door 3 is also more convenient.

[0031] The working principle of the present invention is as follows: when in use, the door panel 301 is opened, the object to be heated is placed in the storage tank 104, the door panel 301 is closed, the sealing member 303 is sealed with the furnace chamber 103 and the storage tank 104, the furnace chamber 103 and the sealing member 303 are made of the same material, and the heat loss in the storage tank 104 is reduced after sealing, the furnace door 3 is closed, and then the connecting mechanism 4 is closed to fasten the furnace door 3 and the furnace body 1, and the wrench 407 is grasped to drive the rotating plate 406 to rotate with the connection point between the rotating plate 406 and the connecting plate 405 as the fulcrum, The wrench 407 moves to the back side, driving the rotating rod 408 and the buckle ring 409 to move to the back side, and the buckle ring 409 moves to the buckle base 401 and snaps into the buckle slot 403. Then the wrench 407 is moved to the front side, so that the back side of the buckle ring 409 and the buckle slot 403 fit each other tightly, which is conducive to quickly opening and closing the furnace door 3. Not only is the connection between the furnace door 3 and the furnace body 1 firm, but also the opening and closing of the furnace door 3 is more convenient. Turn on the switch button 205 on the device base 2 to turn on the power of the electric control system of the resistance furnace. The digital display panel 204 can display the temperature and time of the object being heated, and the time required for the object to be heated can be set through the function button 206. The furnace 103 and the storage tank 104 are heated by the heating element installed inside the furnace 103. At the same time, the heat in the furnace 103 is kept warm by the furnace lining 102. Part of the heat is dissipated from the outside of the furnace lining 102 and absorbed by the heat absorption pipe 106, heating the water entering the heat absorption pipe 106 from the water inlet 105. When the water in the heat absorption pipe 106 runs to the steam layer 107, the water has been The waste heat heats up the steam, which is evenly distributed in the steam layer 107. The high-temperature steam raises the temperature of the heating chamber from the bottom of the furnace 103. The insulation of the furnace lining 102 and the steam heating of the steam layer 107 help to make the objects in the heating chamber be heated more evenly. The steam in the steam layer 107 is transported out from the steam outlet 108. The steam at the steam outlet 108 is collected and concentrated for reuse. The high-temperature steam can be used to drive a turbine generator to generate electricity, or it can be used to directly heat products and materials, which helps to improve energy efficiency.

[0032] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-efficiency silicon carbide resistance furnace for waste heat recycling, comprising a furnace body (1), characterized in that: The bottom of the furnace body (1) is fixedly connected to a device base (2) for installing an electric control system, the front of the furnace body (1) is movably connected to a furnace door (3), and a connecting mechanism (4) is fixedly connected to the middle of one side of the furnace door (3); The furnace body (1) comprises a furnace shell (101), a furnace lining (102), a furnace (103), a storage tank (104), a water inlet (105), a heat absorbing pipe (106), a steam layer (107) and a steam outlet (108); the furnace shell (101) is movably connected to a furnace lining (102) made of a heat-insulating material; the furnace lining (102) is movably connected to the furnace (103); heating elements are fixedly installed on both sides and the top of the furnace (103); a storage tank (104) is provided in the middle of the furnace (103); a water inlet (105) is fixedly connected to the top of one side of the furnace shell (101); a heat absorbing pipe (106) is movably connected to the other side of the water inlet (105); a steam layer (107) is movably connected to the other side of the bottom of the heat absorbing pipe (106); and a steam outlet (108) is movably connected to the other side of the steam layer (107).

2. The high-efficiency silicon carbide resistance furnace for waste heat recycling according to claim 1 is characterized in that: The device base (2) comprises a base body (201), a heat dissipation grille (202), a receiving groove (203), a digital display panel (204), a switch button (205) and a function button (206); the heat dissipation grille (202) is movably connected to the middle of both sides of the base body (201); and the receiving groove (203) is provided in the middle of the front side of the base body (201).

3. The high-efficiency silicon carbide resistance furnace for waste heat recycling according to claim 2 is characterized in that: A digital display panel (204) is fixedly connected to one side of the front face of the receiving slot (203), a switch button (205) of an electrical system is fixedly connected to the bottom of the middle part of the front face of the receiving slot (203), and a function button (206) for realizing various functions is fixedly connected to the bottom of the other side of the front face of the receiving slot (203).

4. The high-efficiency silicon carbide resistance furnace for waste heat recycling according to claim 1 is characterized in that: The furnace door (3) comprises a door panel (301), a hinge (302) and a sealing member (303); the top and bottom of the other side of the door panel (301) are fixedly connected with the hinge (302); the middle of the back side of the door panel (301) facing the storage slot (104) is fixedly connected with a sealing member (303) for sealing the furnace chamber (103).

5. The high-efficiency silicon carbide resistance furnace for waste heat recycling according to claim 1 is characterized in that: The connecting mechanism (4) comprises a buckle base (401), a fixing screw (402), a buckle slot (403), a pressing plate base (404), a connecting plate (405), a rotating plate (406), a wrench (407), a rotating rod (408) and a buckle ring (409); the other side of the buckle base (401) is fixedly connected to one side of the furnace body (1); the fixing screw (402) is movably connected to the middle part of the other side of the buckle base (401); and the buckle slot (403) is provided on the back side of the buckle base (401).

6. The high-efficiency silicon carbide resistance furnace for waste heat recycling according to claim 5 is characterized in that: The other side of the tablet pressing base (404) is fixedly connected to one side of the furnace door (3), and a connecting plate (405) is fixedly connected to the back side of the middle part of one side of the tablet pressing base (404), and the top and bottom of the connecting plate (405) are movably connected to a rotating plate (406) installed by bolts.

7. The high-efficiency silicon carbide resistance furnace for waste heat recycling according to claim 6 is characterized in that: A wrench (407) is fixedly connected to the front of the rotating plate (406), a rotating rod (408) is movably connected to the middle of the top of the rotating plate (406), a buckle (409) is movably connected to the top and bottom of the rotating rod (408), and the back of the buckle (409) is adapted to the buckle notch (403).

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