Novel energy-saving hot blast stove

Abstract

The utility model relates to the technical field of hot-blast stoves, in particular to a novel energy-saving hot-blast stove which comprises a high-temperature box used for drying and firing, a preheating box arranged at the left end of the high-temperature box, a cooling box arranged at the right end of the high-temperature box, an air blower arranged at the top of the high-temperature box and close to the right end, an electric kiln body arranged at the left end of the air blower, and an exhaust pipe arranged at the left end of the electric kiln body and communicated with the inside. A heat preservation cover is arranged above the limiting ring, an output shaft of the motor is coaxially connected with a screw rod, and a kiln car is arranged in the preheating box. According to the novel energy-saving hot-blast stove, the preheating box is arranged to preliminarily preheat materials in the kiln car, the high-temperature box is matched with the air blower and the electric kiln body, and heated air in the electric kiln body is continuously guided into the high-temperature box through the air blower and an exhaust pipe; and a heat preservation cover is matched with a limiting ring in an inserted mode, the upper portion of the electric kiln body is intercepted and protected, and the influence of resource waste caused by heat loss around the electric kiln body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hot blast stoves, in particular to a novel energy-saving hot blast stove. Background Art

[0002] Hot air furnaces are widely used in various industrial fields, such as drying, firing, smelting, heating the air to the required temperature, and transmitting the hot air to the required place through pipes. Among them, kilns refer to furnaces used to fire ceramic objects and sculptures or to fuse enamel to the surface of metal objects;

[0003] The utility model with the publication number CN212457893U discloses a high-efficiency and energy-saving kiln, comprising a kiln and a preheating box, wherein a through hole is provided on the top of the kiln, the preheating box is installed on the right side of the kiln, a fan is provided on one side of the surface of the kiln, and an exhaust end of the fan is detachably connected with an air duct extending to the inside of the preheating box, and a lifting rod is installed on the top of the kiln, and there are two lifting rods, and the lifting rods are located on both sides of the through hole, and the hot air discharged by the fan is used to heat the inside of the preheating box, so that the objects to be fired are preheated, the time consumption of subsequent firing is reduced, and the production efficiency of the kiln is improved. When the objects in the kiln are fired and taken out, the bottom plate at the bottom of the mounting plate moves up synchronously with the mounting plate, and blocks the through hole inside the kiln, so as to avoid the heat in the kiln from leaking from the through hole when the fired objects are taken out and adjusted, further reducing the loss of heat and improving the energy saving of the kiln;

[0004] In the above technical scheme, a fan is installed on one side of the surface of the kiln for ventilating the inside of the kiln. When the fan is turned on during the use of the kiln, the fan can exhaust air inside the kiln and discharge the hot air into the preheating box through the air duct. The inside of the preheating box is used to store objects to be fired. The hot air discharged by the fan is used to heat the inside of the preheating box, so that the objects to be fired are preheated, which reduces the time of subsequent firing and improves the production efficiency of the kiln. At the same time, the energy saving of the kiln during use is improved by secondary utilization of the exhaust gas inside the kiln. However, the overall combination is not convenient to install, and long-term heating use is not convenient to reduce the rapid loss of heat, resulting in waste of energy consumption, and it is not convenient to observe the internal conditions in real time. Utility Model Content

[0005] The purpose of the utility model is to provide a new energy-saving hot blast furnace to solve the problem of a high-efficiency energy-saving kiln with the authorization publication number CN212457893U proposed in the above background technology, but the overall assembly installation is not convenient enough, long-term heating use is not convenient to reduce the rapid loss of heat, energy consumption causes waste, and it is not convenient to observe the internal conditions in real time.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A new energy-saving hot blast furnace comprises a high-temperature box for drying and firing, a preheating box is provided at the left end of the high-temperature box, a cooling box is provided at the right end of the high-temperature box, a blower is provided at the top of the high-temperature box near the right end, an electric kiln body is provided at the left end of the blower, an exhaust pipe connected to the interior is provided at the left end of the electric kiln body, a plurality of air guide pipes are provided on the exhaust pipe, and the air guide pipes are all connected to the interior of the high-temperature box, a limiting ring is provided on the upper surface of the high-temperature box, and a heat preservation cover is provided above the limiting ring, a motor is provided at the left end of the preheating box near the bottom, and a screw is coaxially connected to the output shaft of the motor, and the screw extends to the preheating box, the high-temperature box and the cooling box in sequence, and a kiln car is provided in the preheating box.

[0008] Preferably, a first observation window is provided on the front end surface of the high temperature box, and the edges of the first observation window are bonded and fixed to the high temperature box. Baffles are provided at both ends of the high temperature box, and an opening corresponding to the kiln car is opened in the middle of the baffle.

[0009] In the utility model, the first observation window is made of high temperature resistant glass, which helps outsiders to observe the internal conditions through the first observation window in real time. The cooperation of the two baffles helps to intercept the heat inside the high temperature box and concentrate the heat in the high temperature box to heat the materials without affecting the movement of the kiln car.

[0010] Preferably, the right end of the preheating box is welded and fixed to the left end of the high-temperature box, a mounting groove is provided on the front end surface of the preheating box, a preheating box door is hinged in the mounting groove, the bottom of the limiting ring is welded and fixed to the high-temperature box, the width of the inner wall of the insulation cover is matched with the width of the outer wall of the limiting ring, and a bayonet is provided at the right end of the insulation cover corresponding to the air inlet of the blower.

[0011] In the utility model, the heat dissipated by the left side of the high-temperature box is intercepted with the cooperation of the preheating box, and the materials initially added to the kiln car are preheated. The installation of the heat preservation cover increases the protection above the limit ring, and at the same time reduces the influence of the rapid heat dissipation of the electric kiln body. With the cooperation of the bayonet, it is helpful to clamp and install the air inlet position of the blower, increase the stability of the middle blockage, reduce the rapid loss of heat, and cause waste of resources.

[0012] Preferably, a second observation window is provided on the outer wall of the preheating box door, and the second observation window is bonded and fixed to the preheating box door. A fixing hole is provided on the end of the preheating box door away from the hinge, and a second fixing bolt is provided in the fixing hole. The second fixing bolt passes through the preheating box door and is threadedly connected to the preheating box.

[0013] In the utility model, the second observation window is made of heat-resistant glass, which helps outsiders to observe the internal conditions of the preheating box in real time. With the cooperation of the second fixing bolt, the preheating box door and the preheating box are combined and fixed, and the second fixing bolt is easy to disassemble, which is convenient for opening or installing the preheating box door.

[0014] Preferably, the left end of the cooling box is welded and fixed to the right end of the high-temperature box, a third observation window is provided on the front end surface of the cooling box, a cabinet door is hinged at the right end of the cooling box, a latch is provided on the cabinet door at the end away from the hinge, and a hook is provided on the right end of the cooling box at a position corresponding to the latch.

[0015] In the utility model, the setting of the cooling box helps the kiln car with the baked materials to enter the interior for cooling. The cooling box intercepts the heat lost in the high-temperature box, reduces the rapid heat dissipation inside the high-temperature box, and causes energy waste. The hook and the latch are connected to achieve stable combined installation of the cabinet door and the cooling box. With the cooperation of the third observation window, it is helpful to observe the situation in the cooling box in real time, and opening the cabinet door is convenient for taking out the materials.

[0016] Preferably, the bottom of the kiln car is symmetrically provided with grooves, the grooves are symmetrically provided with pulleys, the kiln car is provided with screw holes corresponding to the screw rods, the bottom of the high temperature box is provided with slide rails corresponding to the grooves, and the pulleys are slidably connected to the slide rails.

[0017] In the utility model, the cooperation of the pulley and the slide rail helps the kiln car to move stably, the screw rod is threadedly connected with the screw hole, and the screw rod rotates to realize the horizontal movement of the kiln car on the screw rod.

[0018] Preferably, the air outlet port of the blower is connected to the electric kiln body, and the interior of the blower is connected to the interior of the electric kiln body. An annular groove is provided on the front end surface of the electric kiln body, a sealing cover is provided in the annular groove, and first fixing bolts are provided at four corners of the outer wall of the sealing cover. Heating plates are symmetrically provided inside the electric kiln body, and a plurality of heating rods are provided on the heating plates. Insert blocks are provided at both ends of the heating plates, and the insert blocks are plugged into the side walls of the electric kiln body.

[0019] In the utility model, a blower is provided and a power source is connected, which is helpful for continuous air blowing. When the electric kiln main body is connected to the power source, the heating rod is started to continuously heat the interior of the electric kiln main body. With the cooperation of the blower, hot air is continuously blown into the exhaust pipe to carry out air blowing and heating. The sealing cover is plugged in with the annular groove. With the cooperation of the first fixing bolt, it is helpful for stable installation of the sealing cover and the electric kiln main body.

[0020] Preferably, the exhaust pipe is interconnected with the interior of the electric kiln body, the air guide pipes are distributed at equal intervals, and the top of the air guide pipe is welded and fixed to the exhaust pipe, a positioning plate is provided at the end of the exhaust pipe, the positioning plate is plugged into the exhaust pipe, and the bottom of the positioning plate is fixedly connected to the high-temperature box by screws.

[0021] In the utility model, the cooperation of multiple air guide pipes helps to continuously transport the heated gas inside the exhaust pipe to the high-temperature box to carry out high-temperature heating of the corresponding materials. The cooperation of the positioning plate helps to fix the end of the exhaust pipe.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. The utility model preliminarily preheats the materials in the kiln car by arranging a preheating box, and the high-temperature box cooperates with the blower and the electric kiln body. The blower continuously guides the heated air in the electric kiln body into the high-temperature box through the exhaust pipe. With the cooperation of the baffle, the heat in the high-temperature box is reduced and dissipated to the preheating box and the cooling box at both ends. The heat preservation cover is plug-in-coordinated with the limit ring to intercept and protect the upper part of the electric kiln body, thereby reducing the heat loss around the electric kiln body and the waste of resources.

[0024] 2. The utility model sets a motor to connect the power supply, the screw rotates, and drives the kiln car to move stably and horizontally on the slide rail. The second observation window is matched on the preheating box door, which is helpful to observe the internal conditions in real time. The first observation window is matched to facilitate observation of the internal conditions of the high-temperature box. The third observation window is matched to observe the conditions in the cooling box. The preheating box door is matched with the second fixing bolt for manual installation or opening. The cabinet door is matched with the latch and the hook for flexible opening or installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the preheating box door opening structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the combined structure of the heat preservation cover and the high temperature box of the utility model;

[0028] Figure 4 This is a schematic diagram of the combined structure of the high temperature box, the electric kiln body and the blower of the utility model;

[0029] Figure 5 This is a schematic diagram of the combined structure of the cooling box and the kiln car of the utility model;

[0030] Figure 6 It is a schematic diagram of the overall side structure of the utility model.

[0031] The meaning of each number in the figure is:

[0032] High temperature box; 10, limit ring; 11, first observation window; 12, blower; 13, electric kiln body; 130, annular groove; 14, heating plate; 140, heating rod; 141, plug block; 15, sealing cover; 150, first fixing bolt; 16, exhaust pipe; 160, air guide pipe; 17, positioning plate; 18, baffle; 19, slide rail;

[0033] Preheating box; 20, mounting slot; 21, preheating box door; 210, second observation window; 211, second fixing bolt;

[0034] Cooling box; 30, third observation window; 31, hook; 32, cabinet door; 320, latch;

[0035] Insulation cover; 40, bayonet;

[0036] Kiln car; 50, groove; 500, pulley; 51, screw hole;

[0037] Motor; 60, screw. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] See also Figure 1-Figure 6 , this embodiment provides a technical solution:

[0040] The new energy-saving hot blast furnace comprises a high temperature box 1 for drying and firing. A first observation window 11 is arranged on the front end surface of the high temperature box 1. The edges of the first observation window 11 are bonded and fixed to the high temperature box 1. Baffles 18 are arranged at both ends of the high temperature box 1. An opening corresponding to the kiln car 5 is opened in the middle of the baffle 18.

[0041] In the utility model, the first observation window 11 is made of high temperature resistant glass, which helps outsiders to observe the internal conditions through the first observation window 11 in real time. The cooperation of the two baffles 18 helps to intercept the heat inside the high temperature box 1, concentrate the heat in the high temperature box 1 to heat the material, and does not affect the movement of the kiln car 5.

[0042] Furthermore, a preheating box 2 is provided at the left end of the high-temperature box 1, and the right end of the preheating box 2 is welded and fixed to the left end of the high-temperature box 1. A mounting groove 20 is provided on the front end surface of the preheating box 2, and a preheating box door 21 is hinged in the mounting groove 20. The bottom of the limiting ring 10 is welded and fixed to the high-temperature box 1, and the width of the inner wall of the insulation cover 4 is matched with the width of the outer wall of the limiting ring 10. A bayonet 40 is provided at the right end of the insulation cover 4 corresponding to the air inlet of the blower 12.

[0043] In the utility model, the cooperation of the preheating box 2 intercepts the heat dissipated from the left side of the high-temperature box 1, and cooperates with the preheating of the materials initially added to the kiln car 5. The installation of the heat preservation cover 4 increases the protection above the limit ring 10, and at the same time reduces the influence of the rapid heat dissipation of the electric kiln body 13. The cooperation of the bayonet 40 helps to clamp and install the air inlet position of the blower 12, increase the stability of the middle blockage, reduce the rapid loss of heat, and cause waste of resources.

[0044] Specifically, a second observation window 210 is provided on the outer wall of the preheating box door 21, and the second observation window 210 is bonded and fixed to the preheating box door 21. A fixing hole is provided on the end of the preheating box door 21 away from the hinge, and a second fixing bolt 211 is provided in the fixing hole. The second fixing bolt 211 passes through the preheating box door 21 and is threadedly connected to the preheating box 2.

[0045] In the utility model, the second observation window 210 is made of heat-resistant glass, which helps outsiders to observe the internal conditions of the preheating box 2 in real time, and with the cooperation of the second fixing bolt 211, the preheating box door 21 and the preheating box 2 are combined and fixed, and the second fixing bolt 211 is easy to disassemble, which is convenient for opening or installing the preheating box door 21.

[0046] It should be noted that a cooling box 3 is provided at the right end of the high-temperature box 1, the left end of the cooling box 3 is welded and fixed to the right end of the high-temperature box 1, a third observation window 30 is provided on the front end surface of the cooling box 3, a cabinet door 32 is hinged at the right end of the cooling box 3, a latch 320 is provided on the cabinet door 32 away from the hinge end, and a hook 31 is provided on the right end of the cooling box 3 at a position corresponding to the latch 320.

[0047] In the utility model, the setting of the cooling box 3 helps the kiln car 5 with the baked materials to enter the interior for cooling. The cooling box 3 intercepts the heat lost in the high-temperature box 1, reduces the rapid heat dissipation inside the high-temperature box 1, and causes energy waste. The hook 31 is connected and matched with the latch 320 to achieve a stable combined installation of the cabinet door 32 and the cooling box 3. With the cooperation of the third observation window 30, it is helpful to observe the status in the cooling box 3 in real time. The cabinet door 32 is opened for easy material removal.

[0048] Furthermore, a blower 12 is provided near the right end of the top of the high temperature box 1, an electric kiln body 13 is provided at the left end of the blower 12, an exhaust pipe 16 communicating with the interior is provided at the left end of the electric kiln body 13, and a plurality of air guide pipes 160 are provided on the exhaust pipe 16, and the air guide pipes 160 are all communicated with the interior of the high temperature box 1;

[0049] Secondly, the air outlet port of the blower 12 is connected to the electric kiln body 13, and the interior of the blower 12 is connected to the interior of the electric kiln body 13. An annular groove 130 is provided on the front end surface of the electric kiln body 13, and a sealing cover 15 is provided in the annular groove 130. The four corners of the outer wall of the sealing cover 15 are provided with first fixing bolts 150. The interior of the electric kiln body 13 is symmetrically provided with heating plates 14, and a plurality of heating rods 140 are provided on the heating plates 14. Insert blocks 141 are provided at both ends of the heating plates 14, and the insert blocks 141 are plugged into the side walls of the electric kiln body 13.

[0050] In the utility model, a blower 12 is provided and powered on, which is helpful for continuous air blowing. The electric kiln body 13 is powered on, and the heating rod 140 is started to continuously heat the interior of the electric kiln body 13. With the cooperation of the blower 12, hot air is continuously blown into the exhaust pipe 16 to carry out air blowing and heating. The sealing cover 15 is plugged into the annular groove 130, and with the cooperation of the first fixing bolt 150, it is helpful to stably install the sealing cover 15 and the electric kiln body 13.

[0051] It is worth adding that the exhaust pipe 16 is interconnected with the interior of the electric kiln body 13, the air guide pipes 160 are distributed at equal intervals, and the top of the air guide pipes 160 is welded and fixed to the exhaust pipe 16, and a positioning plate 17 is provided at the end of the exhaust pipe 16, the positioning plate 17 is plugged into the exhaust pipe 16, and the bottom of the positioning plate 17 is fixedly connected to the high-temperature box 1 by screws.

[0052] In the present invention, the cooperation of multiple air guide pipes 160 helps to continuously transport the heated gas inside the exhaust pipe 16 to the high-temperature box 1 to carry out high-temperature heating of the corresponding materials. The cooperation of the positioning plate 17 helps to fix the end of the exhaust pipe 16.

[0053] Furthermore, a limiting ring 10 is provided on the upper surface of the high-temperature box 1, and a heat-insulating cover 4 is provided above the limiting ring 10. A motor 6 is provided near the bottom of the left end of the preheating box 2, and a screw 60 is coaxially connected to the output shaft of the motor 6. The screw 60 extends to the preheating box 2, the high-temperature box 1 and the cooling box 3 in sequence. A kiln car 5 is provided in the preheating box 2, and grooves 50 are symmetrically opened at the bottom of the kiln car 5. Pullies 500 are symmetrically provided in the grooves 50. Screw holes 51 are opened on the kiln car 5 corresponding to the screw 60. A slide rail 19 is provided on the bottom of the high-temperature box 1 corresponding to the groove 50, and the pulley 500 is slidably connected to the slide rail 19.

[0054] In the utility model, the cooperation between the pulley 500 and the slide rail 19 helps the kiln car 5 to move stably. The screw rod 60 is threadedly connected with the screw hole 51. The screw rod 60 rotates to realize the horizontal movement of the kiln car 5 on the screw rod 60.

[0055] When the new energy-saving hot blast furnace of this embodiment is used, the user first installs the heating plate 14 with the heating rod 140 in the electric kiln body 13, and then fixes the sealing cover 15 with the electric kiln body 13 by the first fixing bolt 150, and the exhaust pipe 16 with multiple air guide pipes 160 is combined and connected with the electric kiln body 13, and the blower 12 is installed on the high temperature box 1 and combined and fixed with the electric kiln body 13, and then the end of the exhaust pipe 16 is combined and fixed with the high temperature box 1 through the positioning plate 17, and the heat preservation cover 4 with the bayonet 40 is plugged and matched with the limit ring 10, and the preheating box 2 with the preheating box door 21 is combined and fixed with the high temperature box 1, and the cooling box 3 with the cabinet door 32 is combined and fixed with the high temperature box 1, and the kiln car 5 is slidably combined with the slide rail 19 through the pulley 500, and the screw hole 51 on the kiln car 5 is threadedly connected with the screw 60;

[0056] When energy-saving heating is required, the material to be heated is manually placed in the kiln car 5, which is located in the preheating box 2, and then the preheating box door 21 is plugged into the mounting slot 20 and fixed in position by the second fixing bolt 211. The motor 6 is started, and the screw 60 rotates, driving the kiln car 5 to move to the high-temperature box 1 and the cooling box 3 on the slide rail 19 in turn. The blower 12 is powered on to continuously blow the heated air in the electric kiln body 13 into the high-temperature box 1 to perform high-temperature heating of the corresponding object. Through the second observation The window 210, the first observation window 11 and the third observation window 30 can be used to observe the internal conditions in real time. With the cooperation of the heat preservation cover 4, the heat of the electric kiln body 13 above the high-temperature box 1 is dissipated to reduce energy consumption and waste. The cabinet door 32 is separated and cooperated with the hook 31 at the latch 320, which is helpful to open the cabinet door 32 and to take out the cooled materials in the kiln car 5 in time. The overall combination is convenient to install. It is first preheated in the preheating box 2, then heated in the high-temperature box 1, and finally cooled in the cooling box 3 for easy removal, which is helpful to continuously save energy and heat the materials.

Claims

1. A novel energy-saving hot air furnace, comprising a high temperature box (1) for drying and firing, wherein a preheating box (2) is provided at the left end of the high temperature box (1), and a cooling box (3) is provided at the right end of the high temperature box (1), characterized in that: A blower (12) is provided near the right end of the top of the high temperature box (1), an electric kiln body (13) is provided at the left end of the blower (12), an exhaust pipe (16) communicating with the interior is provided at the left end of the electric kiln body (13), a plurality of air guide pipes (160) are provided on the exhaust pipe (16), and the air guide pipes (160) are all communicated with the interior of the high temperature box (1), a limit ring (10) is provided on the upper surface of the high temperature box (1), a heat preservation cover (4) is provided above the limit ring (10), a motor (6) is provided near the bottom of the left end of the preheating box (2), an output shaft of the motor (6) is coaxially connected with a screw (60), and the screw (60) extends to the preheating box (2), the high temperature box (1) and the cooling box (3) in sequence, and a kiln car (5) is provided in the preheating box (2).

2. The new energy-saving hot blast stove according to claim 1 is characterized in that: A first observation window (11) is provided on the front end surface of the high temperature box (1), and the edges of the first observation window (11) are bonded and fixed to the high temperature box (1). Baffles (18) are provided at both ends of the high temperature box (1), and an opening corresponding to the kiln car (5) is provided in the middle of the baffle (18).

3. The new energy-saving hot blast stove according to claim 1 is characterized in that: The right end of the preheating box (2) is welded and fixed to the left end of the high-temperature box (1); a mounting groove (20) is provided on the front end surface of the preheating box (2); a preheating box door (21) is hinged in the mounting groove (20); the bottom of the limit ring (10) is welded and fixed to the high-temperature box (1); the width of the inner wall of the heat-insulating cover (4) matches the width of the outer wall of the limit ring (10); and a bayonet (40) is provided at the right end of the heat-insulating cover (4) corresponding to the air inlet of the blower (12).

4. The new energy-saving hot blast stove according to claim 3 is characterized in that: A second observation window (210) is provided on the outer wall of the preheating box door (21), the second observation window (210) being bonded and fixed to the preheating box door (21), a fixing hole being provided on an end of the preheating box door (21) away from the hinge, and a second fixing bolt (211) being provided in the fixing hole, the second fixing bolt (211) passing through the preheating box door (21) and being threadedly connected to the preheating box (2).

5. The new energy-saving hot blast stove according to claim 1 is characterized in that: The left end of the cooling box (3) is welded and fixed to the right end of the high-temperature box (1); a third observation window (30) is provided on the front end surface of the cooling box (3); a cabinet door (32) is hingedly connected to the right end of the cooling box (3); a latch (320) is provided on the cabinet door (32) at an end away from the hinge; and a hook (31) is provided on the right end of the cooling box (3) at a position corresponding to the latch (320).

6. The new energy-saving hot blast stove according to claim 1 is characterized in that: The bottom of the kiln car (5) is symmetrically provided with grooves (50), and pulleys (500) are symmetrically provided in the grooves (50). A screw hole (51) is provided on the kiln car (5) at a position corresponding to the screw rod (60). A slide rail (19) is provided on the bottom of the high temperature box (1) at a position corresponding to the groove (50), and the pulley (500) is slidably connected to the slide rail (19).

7. The new energy-saving hot blast stove according to claim 1 is characterized in that: The air outlet port of the blower (12) is connected to the electric kiln body (13), and the interior of the blower (12) and the interior of the electric kiln body (13) are communicated with each other. A front end surface of the electric kiln body (13) is provided with an annular groove (130), a sealing cover (15) is provided in the annular groove (130), and first fixing bolts (150) are provided at four corners on the outer wall of the sealing cover (15). A heating plate (14) is symmetrically provided inside the electric kiln body (13), and a plurality of heating rods (140) are provided on the heating plate (14). Insert blocks (141) are provided at both ends of the heating plate (14), and the insert blocks (141) are plugged into and matched with the side walls of the electric kiln body (13).

8. The new energy-saving hot blast stove according to claim 1 is characterized in that: The exhaust pipe (16) is interconnected with the interior of the electric kiln body (13); the air guide pipes (160) are distributed at equal intervals, and the tops of the air guide pipes (160) are welded and fixed to the exhaust pipe (16); a positioning plate (17) is provided at the end of the exhaust pipe (16); the positioning plate (17) is plugged into and matched with the exhaust pipe (16), and the bottom of the positioning plate (17) is fixedly connected to the high-temperature box (1) by screws.

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