Energy-saving forging heating furnace

Abstract

The utility model discloses an energy-saving forging heating furnace, which relates to the technical field of forging heating furnaces and comprises an electric heating mechanism, a waste heat recovery mechanism is fixedly mounted on the left side of the electric heating mechanism, a cooling mechanism is arranged on the left side of the waste heat recovery mechanism, and the electric heating mechanism comprises an electric heating furnace. A control panel is arranged below the front side of the electric heating furnace, a ceramic inner wall is fixedly installed on the inner wall of the electric heating furnace, a sealing door is movably installed on the right side of the front end of the electric heating furnace, and a plurality of U-shaped resistance rods are evenly and fixedly installed on the upper portion and the lower portion of an inner cavity of the ceramic inner wall. The electric heating mechanism and the waste heat recovery mechanism are matched with each other, so that redundant heat generated during forging can be discharged, and a forging part to be heated is preheated, so that the forging part to be heated has a certain temperature when being formally heated, the heating time can be effectively shortened, the electric power is saved, and the production efficiency is improved. And the effect of saving energy and electricity is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of forging heating furnaces, in particular to an energy-saving forging heating furnace. Background Art

[0002] According to different heating methods, forging heating furnaces can be divided into various types such as resistance heating, induction heating, gas heating, etc. Among them, resistance heating forging heating furnace is the most common one. Its working principle is to use heating elements (such as resistance wire, electrode, etc.) to convert electrical energy into thermal energy, and transfer the thermal energy to the metal billet or forging in the heating furnace to reach the required heating temperature, thereby improving the physical properties of the material. The existing technology has the following problems:

[0003] Chinese patent document CN216065407U discloses an energy-saving forging heating furnace, including a furnace body, a return air fan and a furnace door, a heating electric tube is arranged at the bottom of the furnace body, and a placement net is arranged in the furnace body, and the placement net is located above the heating electric tube, the return air fan is arranged on one side of the top of the furnace body, and a ventilation pipe is arranged on one side of the return air fan, the end of the ventilation pipe extends to the inside of the furnace body, and the end of the ventilation pipe located in the furnace body is connected with an air outlet, the furnace door is rotatably connected to the front of the furnace body, and a sealing convex block is arranged on the inner side of the furnace door, and the sealing convex block matches the opening on the front of the furnace body, and the inner wall of the furnace body is provided with a heat insulation layer, and the heat insulation layer is made of asbestos material, and the side wall of the furnace door is provided with a sealing ring, and the sealing ring is made of asbestos material. The device can completely retain heat during the heating process, thereby saving energy and avoiding wasting excess heat.

[0004] Although the hot air can be refluxed in the above-mentioned documents, it can only heat the furnace. The time for heating the forgings each time has not changed, and the heating electric pipe still needs to work for a specified time, which cannot save electricity. At the same time, the heating electric pipe in the above-mentioned patent is located at the bottom of the placement net, and the forgings are placed above the placement net. Therefore, the heating area of ​​the forgings is relatively uneven, which slows down the heating speed and increases the energy consumption of the heating furnace. Utility Model Content

[0005] The utility model provides an energy-saving forging heating furnace to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An energy-saving forging heating furnace comprises an electric heating mechanism, a waste heat recovery mechanism is fixedly installed on the left side of the electric heating mechanism, a cooling mechanism is arranged on the left side of the waste heat recovery mechanism, the electric heating mechanism comprises an electric heating furnace, a control panel is arranged at the lower front side of the electric heating furnace, a ceramic inner wall is fixedly installed on the inner wall of the electric heating furnace, a sealing door is movably installed on the right side of the front end of the electric heating furnace, a plurality of U-shaped resistance rods are evenly fixedly installed on the inner cavity of the ceramic inner wall, the plurality of U-shaped resistance rods are fixedly connected to each other, and the plurality of U-shaped resistance rods are powered by an external power supply of the electric heating furnace, three L-shaped brackets are fixedly installed on both sides of the front and rear of the bottom of the inner wall of the ceramic inner wall, a placement frame is fixedly installed at the opposite ends of the horizontal parts of the three front and rear L-shaped brackets, a plurality of placement connecting rods are evenly fixedly installed between the front and rear opposite surfaces of the inner frame of the placement frame, a waste heat recovery pipeline body is fixedly connected to the top of the electric heating furnace, and the waste heat recovery pipeline body and the inner cavity of the ceramic inner wall are interconnected.

[0008] A further improvement of the technical solution of the utility model is that the waste heat recovery pipeline body includes a stainless steel inner tube, and the outer wall of the stainless steel inner tube is fixedly installed with heat insulation cotton.

[0009] A further improvement of the technical solution of the utility model is that the waste heat recovery mechanism includes a preheating box, the inner wall of the preheating box is fixedly installed with a heat-conducting inner wall, the left bottom end of the stainless steel inner tube is fixedly connected with the inner cavity of the heat-conducting inner wall, a preheating box sealing door is movably installed on the left side of the front end of the preheating box, and a smoke outlet that penetrates to the inner cavity of the heat-conducting inner wall is opened on the left side of the preheating box.

[0010] A further improvement of the technical solution of the utility model is that: the cooling mechanism includes a cooling box and an induced draft fan, the induced draft fan is located on the left side of the cooling box, a hot flue gas bent pipe is fixedly installed in the inner cavity of the cooling box, the right end of the hot flue gas bent pipe penetrates to the upper right side of the cooling box and is fixedly connected to the flue gas outlet, the left end of the hot flue gas bent pipe penetrates to the left side of the cooling box and is fixedly connected to the input end of the induced draft fan, and a cooling pipe body is fixedly installed on the outer wall of the hot flue gas bent pipe located in the inner cavity of the cooling box.

[0011] A further improvement of the technical solution of the utility model is that: the cooling pipe body includes an external cooling pipe, a water adding pipe is fixedly connected to the right side of the top of the external cooling pipe, the top of the water adding pipe passes through the top of the cooling box, an electric control valve 1 is arranged on the outer wall of the water adding pipe, a water outlet pipe is fixedly connected to the leftmost end of the top of the external cooling pipe, the output end of the water outlet pipe passes through the left side of the cooling box, and an electric control valve 2 is arranged on the outer wall of the water outlet pipe.

[0012] A further improvement of the technical solution of the utility model is that three liquefied water pipes are fixedly connected to the bottom of the hot flue gas bending pipe, and the bottom ends of the three liquefied water pipes all penetrate to the bottom of the external cooling pipe.

[0013] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0014] 1. The utility model provides an energy-saving forging heating furnace. Through the cooperation between the electric heating mechanism and the waste heat recovery mechanism, the excess heat generated during forging can be discharged and the forgings to be heated can be preheated, so that the forgings to be heated have a certain temperature when they are formally heated, which can effectively reduce the heating time, thereby saving electricity and achieving the effect of energy saving and electricity saving.

[0015] 2. The utility model provides an energy-saving forging heating furnace. Through the cooperation between the cooling box, the hot flue gas bending pipe, the induced draft fan, and the cooling pipe body, a small amount of excess flue gas heat generated by preheating can be used to heat the water source, thereby avoiding heat waste to the greatest extent. At the same time, the cooled flue gas also reduces the impact on the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the electric heating mechanism of the utility model structure;

[0018] Figure 3 A schematic diagram of a waste heat recovery mechanism of the utility model structure;

[0019] Figure 4 It is a schematic diagram of the cooling mechanism of the utility model structure;

[0020] Figure 5 This is a schematic diagram of the cooling pipe main body of the utility model structure.

[0021] In the figure: 1. Electric heating mechanism; 11. Electric heating furnace; 12. Control panel; 13. Ceramic inner wall; 14. U-shaped resistor rod; 15. L-shaped bracket; 16. Placement frame; 17. Placement connecting rod; 18. Sealed door; 19. Waste heat recovery pipeline body; 191. Heat insulation cotton; 192. Stainless steel inner pipe; 2. Waste heat recovery mechanism; 21. Preheating box body; 22. Heat conductive inner wall; 23. Preheating box sealed door; 24. Flue gas outlet; 3. Cooling mechanism; 31. Cooling box; 32. Hot flue gas bending pipe; 33. Draft fan; 34. Cooling pipe body; 341. External cooling pipe; 342. Water supply pipe; 343. Electric control valve 1; 344. Water outlet pipe; 345. Electric control valve 2; 346. Liquefied water pipeline. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figure 1 , Figure 2 As shown, the utility model provides an energy-saving forging heating furnace, including an electric heating mechanism 1, a waste heat recovery mechanism 2 is fixedly installed on the left side of the electric heating mechanism 1, a cooling mechanism 3 is arranged on the left side of the waste heat recovery mechanism 2, the electric heating mechanism 1 includes an electric heating furnace 11, a control panel 12 is arranged at the lower front side of the electric heating furnace 11, a ceramic inner wall 13 is fixedly installed on the inner wall of the electric heating furnace 11, a sealing door 18 is movably installed on the right side of the front end of the electric heating furnace 11, and a plurality of U-shaped resistance rods 14 are evenly fixedly installed on the inner cavity of the ceramic inner wall 13 from top to bottom, and a plurality of U-shaped resistance rods 14 are evenly fixedly installed on the inner cavity of the ceramic inner wall 13 from top to bottom. The U-shaped resistance rods 14 are all fixedly connected to each other, and the U-shaped resistance rods 14 are all powered by the external power supply of the electric heating furnace 11. Three L-shaped brackets 15 are fixedly installed on both sides of the front and rear of the bottom of the inner wall of the ceramic inner wall 13. A placement frame 16 is fixedly installed at the opposite ends of the horizontal parts of the three L-shaped brackets 15. A plurality of placement connecting rods 17 are evenly fixedly installed between the front and rear opposite surfaces of the inner frame of the placement frame 16. A waste heat recovery pipeline body 19 is fixedly connected to the top of the electric heating furnace 11, and the waste heat recovery pipeline body 19 and the inner cavity of the ceramic inner wall 13 are mutually connected;

[0024] When it is necessary to heat the forging, the sealed door 18 is opened to place the forging on several placing connecting rods 17 on the top of the placing frame 16. The placing frame 16, the placing connecting rods 17 and the L-shaped bracket 15 are all made of alumina ceramic material and have high temperature resistance. Then, after closing the sealed door 18, the control panel 12 is used to energize several U-shaped resistance rods 14 and generate heat, so that the forging on the placing connecting rods 17 is evenly and quickly heated. At the same time, the ceramic inner wall 13 made of aluminum silicate material is used to avoid damage to the inner wall of the electric heating furnace 11, thereby improving heat resistance.

[0025] like Figure 3 As shown, the waste heat recovery pipeline body 19 includes a stainless steel inner tube 192, and the outer wall of the stainless steel inner tube 192 is fixedly installed with heat insulation cotton 191. The waste heat recovery mechanism 2 includes a preheating box 21, and the inner wall of the preheating box 21 is fixedly installed with a heat-conducting inner wall 22. The left bottom end of the stainless steel inner tube 192 is connected to the inner cavity of the heat-conducting inner wall 22 through a fixed connection, and a preheating box sealing door 23 is movably installed on the left side of the front end of the preheating box 21. A flue gas outlet 24 that penetrates to the inner cavity of the heat-conducting inner wall 22 is opened on the left side of the preheating box 21.

[0026] Excess heat will enter the heat-conducting inner wall 22 of the inner cavity of the preheating box 21 through the stainless steel inner tube 192. The stainless steel inner tube 192 is insulated by asbestos insulation wool 191 to prevent heat loss. At the same time, it is necessary to open the preheating box sealed door 23 in advance to place another forging in the heat-conducting inner wall 22, so as to use the heat entering the heat-conducting inner wall 22 made of metal thermal conductive material and the stainless steel inner tube 192 for preheating treatment. After the heating of the forgings in the electric heating furnace 11 is completed, the preheated forgings can be directly placed in the electric heating furnace 11 for heating, thereby saving heating time and saving electricity resources.

[0027] like Figure 4 , Figure 5 As shown, the cooling mechanism 3 includes a cooling box 31 and an induced draft fan 33. The induced draft fan 33 is located on the left side of the cooling box 31. A hot flue gas bending pipe 32 is fixedly installed in the inner cavity of the cooling box 31. The right end of the hot flue gas bending pipe 32 penetrates to the upper right side of the cooling box 31 and is fixedly connected to the flue gas outlet 24. The left end of the hot flue gas bending pipe 32 penetrates to the left side of the cooling box 31 and is fixedly connected to the input end of the induced draft fan 33. A cooling pipe body 34 is fixedly installed on the outer wall of the hot flue gas bending pipe 32 located in the inner cavity of the cooling box 31. The cooling pipe body 34 includes an external cooling pipe 341. A water supply pipe 342 is fixedly connected to the right side of the top of the external cooling pipe 341. The top of the water supply pipe 342 penetrates to the top of the cooling box 31. The water supply pipe An electric control valve 1 343 is provided on the outer wall of 342, a water outlet pipe 344 is fixedly connected to the leftmost end of the top of the external cooling pipe 341, the output end of the water outlet pipe 344 passes through the left side of the cooling box 31, and an electric control valve 2 345 is provided on the outer wall of the water outlet pipe 344. Three liquefied water pipes 346 are fixedly connected to the bottom of the hot flue gas bending pipe 32, and the bottom ends of the three liquefied water pipes 346 all pass through the bottom of the external cooling pipe 341. After cooling, the hot flue gas will form small water droplets on the inner wall of the hot flue gas bending pipe 32, and will stay at the bottom of the inner wall of the hot flue gas bending pipe 32 under the action of gravity, so as to flow out through the three liquefied water pipes 346. The apertures of the three liquefied water pipes 346 are small, and the outflow of a small amount of flue gas will not have a significant impact.

[0028] During preheating, the excess heat and flue gas can pass through the suction force generated by the induced draft fan 33, and thus enter the inner cavity of the hot flue gas bent tube 32 through the flue gas outlet 24. When passing through the hot flue gas bent tube 32 in the inner cavity of the cooling box 31, the electric control valve 1 343 is opened to allow cold water to enter the inner cavity of the external cooling tube 341 through the water adding pipe 342 in advance. At this time, when the heat passes through the hot flue gas bent tube 32 inside the external cooling tube 341, it can be cooled. At the same time, the heat will also be absorbed by the cold water and heated to become hot water. Then, after opening the electric control valve 2 345, the hot water inside the external cooling tube 341 can be pumped out through the water pump externally connected to the water outlet pipe 344 for recovery and can be used for domestic water use. Then, cold water can be added again through the water adding pipe 342, and the remaining flue gas after cooling can be directly discharged through the output end of the induced draft fan 33, thereby avoiding heat waste.

[0029] The following is a detailed description of the working principle of the energy-saving forging heating furnace.

[0030] like Figure 1-5As shown, when it is necessary to heat the forging, the sealing door 18 is opened to place the forging on several placing connecting rods 17 on the top of the placing frame 16. The placing frame 16, the placing connecting rods 17 and the L-shaped bracket 15 are all made of alumina ceramic material and have high temperature resistance. Then, after closing the sealing door 18, the control panel 12 is used to energize several U-shaped resistor rods 14 and generate heat, so that the forging on the placing connecting rod 17 is evenly and quickly heated. At the same time, the excess heat will enter the heat-conducting inner wall 22 of the inner cavity of the preheating box 21 through the stainless steel inner tube 192. The stainless steel inner tube 192 is insulated by the heat-insulating cotton 191 made of asbestos to prevent heat loss. At the same time, it is necessary to open the sealing door 23 of the preheating box in advance to place another forging in the heat-conducting inner wall 22, so as to use the heat entering from the heat-conducting inner wall 22 made of metal heat-conducting material and the stainless steel inner tube 192 for preheating treatment. After the heating of the forging in the electric heating furnace 11 is completed, The preheated forgings are directly placed in the electric heating furnace 11 for heating, thereby saving heating time and saving electricity resources. The excess heat and flue gas during preheating can pass through the suction force generated by the induced draft fan 33, and thus enter the inner cavity of the hot flue gas bending tube 32 through the flue gas outlet 24. When passing through the hot flue gas bending tube 32 in the inner cavity of the cooling box 31, the electric control valve 1 343 is opened to allow cold water to enter the inner cavity of the external cooling tube 341 through the water adding pipe 342 in advance. At this time, when the heat passes through the hot flue gas bending tube 32 inside the external cooling tube 341, it can be cooled. At the same time, the heat will also be absorbed by the cold water and heated to become hot water. Then, after opening the electric control valve 2 345, the hot water inside the external cooling tube 341 can be pumped out through the water pump externally connected to the water outlet pipe 344 for recovery, which can be used for domestic water use. Then, cold water can be added again through the water adding pipe 342, and the remaining flue gas after cooling can be directly discharged through the output end of the induced draft fan 33, thereby avoiding heat waste.

[0031] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An energy-saving forging heating furnace, comprising an electric heating mechanism (1), characterized in that: A waste heat recovery mechanism (2) is fixedly installed on the left side of the electric heating mechanism (1), and a cooling mechanism (3) is arranged on the left side of the waste heat recovery mechanism (2). The electric heating mechanism (1) comprises an electric heating furnace (11), and a control panel (12) is arranged at the lower front side of the electric heating furnace (11). A ceramic inner wall (13) is fixedly installed on the inner wall of the electric heating furnace (11), and a sealing door (18) is movably installed on the right side of the front end of the electric heating furnace (11). A plurality of U-shaped resistance rods (14) are evenly fixedly installed on the inner cavity of the ceramic inner wall (13) from top to bottom, and the plurality of U-shaped resistance rods (14) are evenly connected. The U-shaped resistor rods (14) are fixedly connected to each other, and are powered by an external power supply of the electric heating furnace (11). Three L-shaped brackets (15) are fixedly installed on both sides of the front and rear of the bottom of the inner wall of the ceramic inner wall (13). A placement frame (16) is fixedly installed at the horizontal opposite ends of the three L-shaped brackets (15). A plurality of placement connecting rods (17) are evenly fixedly installed between the front and rear opposite surfaces of the inner frame of the placement frame (16). A waste heat recovery pipeline body (19) is fixedly connected to the top of the electric heating furnace (11), and the waste heat recovery pipeline body (19) and the inner cavity of the ceramic inner wall (13) are interconnected.

2. The energy-saving forging heating furnace according to claim 1, characterized in that: The waste heat recovery pipeline body (19) comprises a stainless steel inner tube (192), and a heat insulation cotton (191) is fixedly installed on the outer wall of the stainless steel inner tube (192).

3. The energy-saving forging heating furnace according to claim 2, characterized in that: The waste heat recovery mechanism (2) comprises a preheating box (21), the inner wall of which is fixedly mounted a heat-conducting inner wall (22), the left bottom end of the stainless steel inner tube (192) is fixedly connected to the inner cavity of the heat-conducting inner wall (22), a preheating box sealing door (23) is movably mounted on the left front end of the preheating box (21), and a smoke outlet (24) is provided on the left side of the preheating box (21) and is connected to the inner cavity of the heat-conducting inner wall (22).

4. The energy-saving forging heating furnace according to claim 3 is characterized in that: The cooling mechanism (3) comprises a cooling box (31) and an induced draft fan (33); the induced draft fan (33) is located on the left side of the cooling box (31); a hot flue gas bent pipe (32) is fixedly installed in the inner cavity of the cooling box (31); the right end of the hot flue gas bent pipe (32) passes through the upper right side of the cooling box (31) and is fixedly connected to the flue gas outlet (24); the left end of the hot flue gas bent pipe (32) passes through the left side of the cooling box (31) and is fixedly connected to the input end of the induced draft fan (33); a cooling pipe body (34) is fixedly installed on the portion of the outer wall of the hot flue gas bent pipe (32) located in the inner cavity of the cooling box (31).

5. The energy-saving forging heating furnace according to claim 4, characterized in that: The cooling pipe body (34) includes an external cooling pipe (341), a water supply pipe (342) is fixedly connected to the right side of the top of the external cooling pipe (341), the top of the water supply pipe (342) passes through the top of the cooling box (31), and the outer wall of the water supply pipe (342) is provided with an electric control valve 1 (343), and the leftmost end of the top of the external cooling pipe (341) is fixedly connected to a water outlet pipe (344), the output end of the water outlet pipe (344) passes through the left side of the cooling box (31), and the outer wall of the water outlet pipe (344) is provided with an electric control valve 2 (345).

6. The energy-saving forging heating furnace according to claim 5, characterized in that: Three liquefied water pipes (346) are fixedly connected to the bottom of the hot flue gas bending pipe (32), and the bottom ends of the three liquefied water pipes (346) all penetrate to the bottom of the external cooling pipe (341).

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