High-temperature box-type resistance furnace with waste heat recovery function

Abstract

The utility model relates to the technical field of resistance furnace devices, and discloses a high-temperature box-type resistance furnace with a waste heat recovery function, which is characterized in that the front side of a furnace body assembly is fixedly provided with a convenient door opening and closing assembly, and the top of the furnace body assembly is fixedly provided with a hot gas collecting and filtering assembly; the tail end of the hot gas collecting and filtering assembly is fixedly provided with a recycling conduction assembly, and the tail end of the recycling conduction assembly is connected to the bottom of the furnace body assembly. According to the waste heat recovery device, the recovery conduction assembly is installed on the waste heat recovery device, so that when the waste heat recovery device is used, recovered waste heat can be converted through the arranged recovery conduction assembly and conducted to the interior of the furnace body, and therefore recovered smoke heat can be transmitted to air or other media around the furnace body; therefore, the media are preheated, the preheated air or media can be used for other technological processes or enter the resistance furnace again to participate in the combustion or heating process, the energy utilization efficiency is improved, and energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of resistance furnace devices, specifically a high-temperature box-type resistance furnace with waste heat recovery function. Background Technology

[0002] High-temperature box-type resistance furnaces are commonly used in materials science, metallurgy, ceramics, electronics, and many other fields for heating, sintering, and melting materials. Their working principle primarily relies on resistance heating elements, such as silicon carbide rods and silicon molybdenum rods, where current flowing through them generates heat, raising the furnace temperature. While current-grade high-temperature box-type resistance furnaces offer advantages such as rapid heating and high temperature control precision, they suffer from significant energy consumption drawbacks. After heating the material, the sealed door is typically opened to release heat and allow the material to cool naturally. This process results in substantial heat loss and significant energy waste. With increasing global emphasis on energy conservation, emission reduction, and sustainable development, developing a high-temperature box-type resistance furnace capable of effectively recovering waste heat has become a pressing issue for the industry.

[0003] Application number CN202320619853.8 discloses a high-temperature box-type resistance furnace, relating to the field of resistance furnaces. It includes a furnace body, a control panel, a furnace door, and a heating chamber. The heating chamber is located within the furnace body cavity. The furnace door is rotatably connected to the surface of the heating chamber. The control panel is embedded in the furnace body surface and located below the furnace door. A ceramic heat insulation frame is provided on the inner wall of the heating chamber. Limiting grooves are equidistantly formed on the top and sides of the inner wall of the ceramic heat insulation frame. Resistance wire heating tubes are embedded within each of the limiting grooves. Guide rails are symmetrically arranged at the bottom of the heating chamber cavity. The guide rail surface is slidably equipped with a sliding plate, and the sliding plate surface is symmetrically equipped with limiting rods on both sides. This new device uses the sliding plate to send objects into or out of the heating chamber. At the same time, the limiting rods can indicate the maximum diameter of the object being held, preventing the heated object from colliding with the resistance wire heating tube when it is being handled, thus improving the protection of the resistance wire heating tube. However, there is a shortcoming: when the device is in use, the residual heat in the skull is not effectively recovered and reused inside the device, thus failing to achieve the effect of multi-utilization of resources. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature box-type resistance furnace with waste heat recovery function, which solves the problem that when the device is in use, the waste heat in the brain is not effectively recovered and applied to the device, thus failing to achieve the effect of multi-utilization of resources.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a high-temperature box-type resistance furnace with waste heat recovery function, including a furnace body assembly. A convenient opening and closing door assembly is fixedly installed on the front side of the furnace body assembly, and a hot gas collection and filtration assembly is fixedly installed on the top of the furnace body assembly. A recovery and conduction assembly is fixedly installed at the end of the hot gas collection and filtration assembly, and the end of the recovery and conduction assembly is connected to the bottom of the furnace body assembly.

[0007] The recycling and transmission assembly includes a transmission pipe, one end of which is fixedly installed at the top of the connecting pipe opening, and a diversion pipe is fixedly installed at the end of the transmission pipe. Flow regulating valves are installed on both sides of the diversion pipe, and a transmission conduit is fixedly installed at the end of the diversion pipe.

[0008] Furthermore, the furnace body assembly includes a box, with support legs fixedly installed diagonally at the bottom of the box, and an inlet is provided on the front side of the box, with a braking device fixedly installed inside the inlet.

[0009] Furthermore, the convenient door opening and closing assembly includes a door, one side of which is connected to one side of the outer wall of the inlet via an opening and closing hinge, and a switch handle is fixedly installed on the front outer wall of the door. Meanwhile, a limit lock is fixedly installed on the other outer wall of the door, and an adjusting lock is installed in the middle of the limit lock.

[0010] Furthermore, the hot air collection and filtration assembly includes an air intake device, which is fixedly installed on the top of the housing. A filter screen is installed inside the air intake device, and a connecting pipe port is fixedly installed on the outside of the air intake device through a connecting and fixing strip.

[0011] Furthermore, the ends of the transmission conduits are fixedly installed on the front and rear sides of the bottom of the housing, respectively.

[0012] Furthermore, the braking device includes an insulation wall, on the inner wall of which a plurality of reflectors are installed, and a heating element is fixedly installed at the corresponding middle top of the insulation wall.

[0013] Furthermore, the adjusting lock includes a rotating turntable, on the inner side of which a threaded telescopic rod is fixedly installed. A limit rod is fixedly installed at the end of the threaded telescopic rod. The limit rod is limited and installed inside a limit fixing ring, and the limit fixing ring is fixedly installed on the other side of the outer wall of the inlet.

[0014] Furthermore, an air intake is provided in the middle of the top of the insulation wall, and air inlets are provided on the front and rear sides of the bottom of the insulation wall. An air intake device is fixedly installed on the top of the air intake, and a transmission conduit is connected to the bottom of the air inlet.

[0015] This utility model has the following beneficial effects:

[0016] (1) The present invention provides a high-temperature box-type resistance furnace with waste heat recovery function. By installing a recovery conduction component on the device, the waste heat can be converted and conducted to the inside of the furnace body when the device is used. In this way, the recovered flue gas heat can be transferred to the air or other media around the furnace body, thereby preheating these media. The preheated air or media can be used for other processes or re-enter the resistance furnace to participate in the combustion or heating process, thereby improving energy utilization efficiency and reducing energy consumption.

[0017] (2) The high-temperature box-type resistance furnace with waste heat recovery function of this utility model can simplify the opening and closing process of the door by installing a convenient door opening and closing component on the device, thus avoiding the cumbersome and difficult problems of the traditional door opening and closing process.

[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of a high-temperature box-type resistance furnace with waste heat recovery function according to this utility model.

[0021] Figure 2 This is a side view of a high-temperature box-type resistance furnace with waste heat recovery function according to the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of a convenient door opening and closing assembly for a high-temperature box-type resistance furnace with waste heat recovery function according to this utility model.

[0023] Figure 4 This is a cross-sectional view of a high-temperature box-type resistance furnace with waste heat recovery function according to the present invention.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. Furnace body assembly; 2. Convenient door opening and closing assembly; 3. Hot air collection and filtration assembly; 4. Recycling and conduction assembly; 101. Housing; 102. Support legs; 103. Inlet; 104. Braking device; 201. Door opening and closing; 202. Opening and closing hinge; 203. Switch handle; 204. Limit lock; 205. Adjustable lock; 301. Suction device; 302. Connecting and fixing strip; 303. Filter screen; 304. Connecting pipe port; 401. Transmission pipe; 402. Diversion pipe; 403. Flow regulating valve; 404. Transmission conduit; 1041. Insulation wall; 1042. Heating element; 1043. Reflector; 2051. Rotating turntable; 2052. Limiting rod; 2053. Limiting and fixing ring; 2054. Threaded telescopic rod; 10411. Suction port; 10412. Air inlet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-4 As shown, this utility model is a high-temperature box-type resistance furnace with waste heat recovery function, including furnace body assembly 1, a convenient opening and closing door assembly 2 is fixedly installed on the front side of furnace body assembly 1, and a hot gas collection and filtering assembly 3 is fixedly installed on the top of furnace body assembly 1. A recovery and conduction assembly 4 is fixedly installed at the end of the hot gas collection and filtering assembly 3, and the end of the recovery and conduction assembly 4 is connected to the bottom of furnace body assembly 1.

[0028] The recycling transmission component 4 includes a transmission pipe 401, one end of which is fixedly installed on the top of the connecting pipe port 304, and a diversion pipe 402 is fixedly installed at the end of the transmission pipe 401. Flow regulating valves 403 are installed on both sides of the diversion pipe 402, and a transmission conduit 404 is fixedly installed at the end of the diversion pipe 402.

[0029] By installing the recovery conduction component 4 on the device, the recovered waste heat can be converted and conducted into the interior of the furnace. This allows the recovered flue gas heat to be transferred to the air or other media around the furnace, thereby preheating these media. The preheated air or media can then be used in other processes or re-enter the resistance furnace to participate in combustion or heating processes, improving energy efficiency and reducing energy consumption.

[0030] The furnace body assembly 1 includes a box 101. Support legs 102 are fixedly installed diagonally at the bottom of the box 101, and an inlet 103 is opened on the front side of the box 101. A braking device 104 is fixedly installed inside the inlet 103. The box 101 serves as the main structure, the support legs 102 provide stable support, the inlet 103 is used for material inlet and outlet, and the internal braking device 104 maintains the furnace temperature stability.

[0031] The convenient door opening and closing assembly 2 includes a door opening and closing assembly 201. One side of the door opening and closing assembly 201 is connected to one side of the outer wall of the inlet 103 via a hinge 202. A handle 203 is fixedly installed on the front outer wall of the door opening and closing assembly 201. Meanwhile, a limit lock 204 is fixedly installed on the other outer wall of the door opening and closing assembly 201. An adjustable lock 205 is installed in the middle of the limit lock 204. The door opening and closing assembly 201 can be rotated through the hinge 202. The handle 203 is easy to operate.

[0032] The hot gas collection and filtration assembly 3 includes an air intake device 301, which is fixedly installed on the top of the housing 101. A filter screen 303 is installed inside the air intake device 301, and a connecting pipe port 304 is fixedly installed on the outside of the air intake device 301 through a connecting and fixing strip 302. The air intake device 301 draws high-temperature exhaust gas from the furnace through the air intake port 10411, the filter screen 303 filters impurities, and the connecting and fixing strip 302 reinforces the connecting pipe port 304 to ensure that the exhaust gas is transported to the recovery and conduction assembly 4.

[0033] The ends of the transmission conduit 404 are fixedly installed on the front and rear sides of the bottom of the box 101, respectively. The transmission conduit 401 delivers the filtered hot air to the diversion conduit 402. The flow regulating valve 403 controls the diversion ratio. The transmission conduit 404 introduces the hot air into the air inlet 10412 at the bottom of the box 101 to realize the recovery and utilization of waste heat.

[0034] The braking device 104 includes an insulation wall 1041, on the inner wall of which a plurality of reflectors 1043 are installed, and a heating element 1042 is fixedly installed at the top center of the insulation wall 1041. The insulation wall 1041 of the braking device 104 reduces heat loss, the reflectors 1043 reflect heat energy, and the heating element 1042 provides a heat source.

[0035] The adjusting lock 205 includes a rotating disc 2051. A threaded telescopic rod 2054 is fixedly installed on the inner side of the rotating disc 2051. A limiting rod 2052 is fixedly installed at the end of the threaded telescopic rod 2054. The limiting rod 2052 is limited and installed inside the limiting fixing ring 2053, and the limiting fixing ring 2053 is fixedly installed on the other side of the outer wall of the inlet 103. The rotating disc 2051 of the adjusting lock 205 drives the threaded telescopic rod 2054, so that the limiting rod 2052 is inserted into the limiting fixing ring 2053, thereby locking the door.

[0036] An air intake 10411 is provided in the middle of the top of the insulation wall 1041, and an air inlet 10412 is provided on the front and rear sides of the bottom of the insulation wall 1041. An air intake device 301 is fixedly installed on the top of the air intake 10411, and a transmission conduit 404 is connected to the bottom of the air inlet 10412.

[0037] This high-temperature box-type resistance furnace with waste heat recovery function collects high-temperature waste gas from the furnace body assembly 1 through the hot gas collection and filtration assembly 3. After being filtered and regulated by the recovery and conduction assembly 4, the waste heat is reintroduced into the bottom of the furnace body, realizing energy recycling and reducing energy consumption. The box body 101 serves as the main structure, with the support legs 102 providing stable support. The inlet 103 is used for material entry and exit. The internal braking device 104 maintains a stable furnace temperature. The insulation wall 1041 of the braking device 104 reduces heat loss, and the reflector 1043 reflects heat energy. The heating element... 1042 provides a heat source. The door 201 is rotated via the hinge 202. The handle 203 facilitates operation. The rotating disc 2051 of the adjusting lock 205 drives the threaded telescopic rod 2054, causing the limit rod 2052 to insert into the limit fixing ring 2053, thus locking the door. The suction device 301 draws high-temperature exhaust gas from the furnace through the suction port 10411. The filter screen 303 filters impurities. The connecting and fixing strip 302 reinforces the connecting pipe port 304, ensuring that the exhaust gas is delivered to the recovery and conduction component 4. The transmission pipe 401 carries the filtered hot gas. The hot gas is delivered to the diversion pipe 402, and the flow regulating valve 403 controls the diversion ratio. The transmission conduit 404 guides the hot gas into the air inlet 10412 at the bottom of the housing 101 to achieve waste heat recovery. The high-temperature exhaust gas in the furnace enters the interior of the suction device 301 through the suction port 10411 and is filtered by the filter screen 303. The filtered hot gas enters the transmission pipe 401 through the connecting pipe port 304. Then, the diversion pipe 402 guides the flow at two locations, and the diverted hot gas is controlled by the flow regulating valve 403. Finally, it passes through the transmission conduit 404. The waste heat enters the interior of the inlet 10412 and further enters the temporal part of the furnace body, where it re-participates in the heating process, reducing energy consumption. This device improves energy utilization through a closed-loop waste heat recovery system (hot gas collection and filtration component 3 and recovery conduction component 4), and optimizes waste heat distribution through an adjustable diversion design flow regulating valve 403. At the same time, the modular structure facilitates maintenance and upgrades. Through the above structure and process, this resistance furnace achieves effective collection, filtration and waste heat reuse of high-temperature waste gas, significantly improving energy efficiency.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A high temperature box-type resistance furnace with waste heat recovery function, comprising a furnace body assembly (1), characterized in that: A convenient door opening and closing assembly (2) is fixedly installed on the front side of the furnace body assembly (1), and a hot gas collection and filtration assembly (3) is fixedly installed on the top of the furnace body assembly (1). A recovery and conduction assembly (4) is fixedly installed at the end of the hot gas collection and filtration assembly (3), and the end of the recovery and conduction assembly (4) is connected to the bottom of the furnace body assembly (1). The recycling transmission assembly (4) includes a transmission pipe (401), one end of which is fixedly installed on the top of the connecting pipe port (304), and a diversion pipe (402) is fixedly installed at the end of the transmission pipe (401). Flow regulating valves (403) are installed on both sides of the diversion pipe (402), and a transmission conduit (404) is fixedly installed at the end of the diversion pipe (402).

2. A high temperature box-type resistance furnace with waste heat recovery function according to claim 1, characterized in that: The furnace body assembly (1) includes a box (101), and a support bracket (102) is fixedly installed diagonally at the bottom of the box (101). An inlet (103) is opened on the front side of the box (101), and a braking device (104) is fixedly installed inside the inlet (103).

3. A high-temperature box-type resistance furnace with waste heat recovery function according to claim 1, characterized in that: The convenient door opening and closing assembly (2) includes a door opening and closing assembly (201). One side of the door opening and closing assembly (201) is connected to one side of the outer wall of the inlet (103) via an opening and closing hinge (202). A switch handle (203) is fixedly installed on the front outer wall of the door opening and closing assembly (201). At the same time, a limit lock (204) is fixedly installed on the other outer wall of the door opening and closing assembly (201). An adjusting lock (205) is installed in the middle of the limit lock (204).

4. A high temperature box-type resistance furnace with waste heat recovery function according to claim 1, characterized in that: The hot air collection and filtration assembly (3) includes an air intake device (301), which is fixedly installed on the top of the housing (101). A filter screen (303) is installed inside the air intake device (301), and a connecting pipe port (304) is fixedly installed on the outside of the air intake device (301) through a connecting and fixing strip (302).

5. A high temperature box type electric resistance furnace with waste heat recovery function according to claim 1, characterized in that: The ends of the transmission conduit (404) are fixedly installed on the front and rear sides of the bottom of the box (101).

6. A high temperature box type electric resistance furnace with waste heat recovery function according to claim 2, characterized in that: The braking device (104) includes an insulation wall (1041), on the inner wall of the insulation wall (1041) are a plurality of reflectors (1043), and a heating element (1042) is fixedly installed on the top center of the insulation wall (1041).

7. A high temperature box type electric resistance furnace with waste heat recovery function according to claim 3, characterized in that: The adjusting lock (205) includes a rotating turntable (2051), on the inner side of which a threaded telescopic rod (2054) is fixedly installed. A limiting rod (2052) is fixedly installed at the end of the threaded telescopic rod (2054). The limiting rod (2052) is limited and installed inside a limiting fixing ring (2053), and the limiting fixing ring (2053) is fixedly installed on the other side of the outer wall of the inlet (103).

8. A high temperature box type electric resistance furnace with waste heat recovery function according to claim 6, characterized in that: The insulation wall (1041) has an air intake (10411) in the middle of its top, and air inlets (10412) are provided on the front and rear sides of the bottom of the insulation wall (1041). An air intake device (301) is fixedly installed on the top of the air intake (10411), and a transmission conduit (404) is connected to the bottom of the air inlet (10412).

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