Energy-saving and environment-friendly box type electric furnace

Abstract

The utility model relates to the technical field of box type electric furnaces, in particular to an energy-saving and environment-friendly box type electric furnace which comprises a heat insulation box, a protective door hinged to the front side of the heat insulation box, heat dissipation fans fixed to the two sides of the heat insulation box, a plurality of heat insulation grid plates arranged at the positions, located at the heat dissipation fans, in the heat insulation box, and further comprises a heat dissipation mechanism and a heat recovery mechanism. The heat dissipation base moves downwards along the L-shaped frame, the heat dissipation base pulls the L-shaped frame to enable the upper end of the L-shaped frame to push the heat dissipation strips towards the interior of the furnace body, then the heat dissipation strips break away from sealing of the heat dissipation notches, and then external air enters the interior of the furnace body from gaps between the heat dissipation notches and the heat dissipation strips. And then the water is sent out from the lower side of the heat dissipation notch and enters the heat absorption pipe disc to heat the water, and then the whole heat recovery treatment is carried out, so that the situation that cold water is introduced into the hot furnace body to cause explosion is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of box-type electric furnaces, in particular to an energy-saving and environment-friendly box-type electric furnace. Background Art

[0002] According to the patent document with the publication number CN215638769U, the hot air pipe outlet is connected to the external heating pipe, and the water in the heating pipe flows into the residual heat recovery pipe, and the heat in the furnace is absorbed by the residual heat recovery pipe to heat the water for heating, and then the residual temperature in the furnace can be used;

[0003] This patent document recovers and reuses the heat in the furnace. For relatively low temperatures, the entire water circulation can reduce the temperature in the furnace to recover heat. However, it is very dangerous to use the above method to recover heat for a furnace with a higher temperature. During the entire process, if there is water in the waste heat recovery pipe during heating, the temperature in the furnace will rise more slowly, and the temperature loss in the furnace during heating will be accelerated, which is a great waste of electricity. At the same time, if the water in the waste heat recovery pipe does not flow, there is a risk of explosion. If water is passed into the waste heat recovery pipe during recovery, the high temperature will cause the water to evaporate quickly, which may cause a large amount of steam to appear in the waste heat recovery pipe, and then cause the risk of explosion. Utility Model Content

[0004] The purpose of the utility model is to provide an energy-saving and environment-friendly box-type electric furnace in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] An energy-saving and environment-friendly box-type electric furnace, comprising a heat-insulating box, a protective door hinged on the front side of the heat-insulating box, cooling fans fixed on both sides of the heat-insulating box, a plurality of heat-insulating grids arranged inside the heat-insulating box at the positions of the cooling fans, and a heat-dissipating mechanism and a heat-recovery mechanism;

[0007] The heat dissipation mechanism comprises a furnace body, heat dissipation strips are slidably connected on both sides of the furnace body, a heat dissipation seat is slidably connected on the lower side of the furnace body, L-shaped frames are arranged at the lower end of the heat dissipation strips and at both sides of the heat dissipation seat, a rotating shaft is arranged at the lower side of the heat dissipation seat, a cam for pushing the heat dissipation seat upward is fixed at the middle position of the rotating shaft, a reset motor is fixed at the input end of the rotating shaft, and a heating tube is fixed at the rear side of the furnace body;

[0008] The heat recovery mechanism includes an air guide frame, which is fixed to the bottom of the insulation box. A heat recovery seat is fixed to the lower end of the air guide frame. A heat absorption pipe disc is arranged inside the heat recovery seat. An air outlet pipe frame for discharging air that has recovered heat is fixed to the outside of the heat recovery seat.

[0009] Preferably, a heat dissipation slot for conveniently discharging air is provided on the furnace body, a heat dissipation strip is arranged in the heat dissipation slot, and an upper end of the heat dissipation seat extends into a lower side of the heat dissipation slot.

[0010] Preferably: a slide groove is provided at the top of the furnace body at the position of the heat dissipation notch, and a guide plate is fixed at the upper end of the heat dissipation strip.

[0011] Preferably, the lower end of the heat dissipation strip is rotatably connected to the upper end of the L-shaped frame, an L-shaped groove is provided on the lower side of the L-shaped frame, and the heat dissipation seat is located at the position of the L-shaped groove and a sliding seat is fixed thereon.

[0012] Preferably: a plurality of air outlets are provided at the lower side of the heat recovery seat, an air suction hood communicating with the air outlets is provided at the lower end of the air outlet pipe rack, and an air outlet pipe is fixed at the rear side of the air outlet pipe rack.

[0013] Preferably: a conical cavity is provided inside the heat recovery seat for facilitating hot air to pass through the heat absorbing tube disc, and a through hole communicating with the bottom of the air guide frame is provided at the upper end of the conical cavity.

[0014] The beneficial effects compared with the prior art are as follows:

[0015] The heat sink moves downward along the L-shaped frame, and the heat sink pulls the L-shaped frame to push the upper end of the L-shaped frame into the furnace body, thereby releasing the heat sink from the closure of the heat sink slot. External air then enters the furnace body from the gap between the heat sink slot and the heat sink, and then is sent out from the lower side of the heat sink slot and enters the heat absorbing pipe coil to heat the water, followed by the entire heat recovery process, thereby preventing cold water from exploding when it enters the hotter furnace body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of an energy-saving and environment-friendly box-type electric furnace described in the utility model;

[0018] Figure 2 It is a cross-sectional view of an energy-saving and environment-friendly box-type electric furnace described in the utility model;

[0019] Figure 3 This is a cross-sectional view of the first state of an L-shaped frame of an energy-saving and environment-friendly box-type electric furnace described in the utility model;

[0020] Figure 4It is a cross-sectional view of the second state of the L-shaped frame of the energy-saving and environment-friendly box-type electric furnace described in the utility model;

[0021] Figure 5 This is a partial parts diagram of a heat absorbing pipe coil and an exhaust pipe rack of an energy-saving and environment-friendly box-type electric furnace described in the utility model;

[0022] Figure 6 This is a partial parts diagram of a heat recovery seat of an energy-saving and environment-friendly box-type electric furnace described in the utility model;

[0023] Figure 7 This is a partial parts diagram of the heat dissipation mechanism of an energy-saving and environment-friendly box-type electric furnace described in the utility model;

[0024] Figure 8 This is a partial parts diagram of the heat dissipation strip and heat dissipation seat of an energy-saving and environment-friendly box-type electric furnace described in the utility model;

[0025] Fig. 9 This is a partial parts diagram of a furnace body of an energy-saving and environment-friendly box-type electric furnace described in the utility model.

[0026] The following are the descriptions of the reference numerals:

[0027] 1. Heat insulation box; 2. Protection door; 3. Cooling fan; 4. Heat insulation grid; 5. Heat dissipation mechanism; 6. Heat recovery mechanism; 7. Air outlet; 8. Slide; 9. Heat dissipation slot; 51. Furnace body; 52. Heat dissipation strip; 53. Heat dissipation seat; 54. L-shaped frame; 55. Reset motor; 56. Rotating shaft; 57. Cam; 61. Air guide frame; 62. Heat recovery seat; 63. Heat absorption pipe coil; 64. Air outlet pipe frame. DETAILED DESCRIPTION

[0028] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0030] The utility model is further described below in conjunction with the accompanying drawings:

[0031] like Figure 1-Figure 9 As shown, an energy-saving and environment-friendly box-type electric furnace comprises a heat-insulating box 1, a protective door 2 is hingedly connected to the front side of the heat-insulating box 1, cooling fans 3 are fixed on both sides of the heat-insulating box 1, a plurality of heat-insulating grids 4 are arranged inside the heat-insulating box 1 at the positions of the cooling fans 3, and a heat-dissipating mechanism 5 and a heat-recovery mechanism 6 are also included;

[0032] In this embodiment, the heat dissipation mechanism 5 includes a furnace body 51, both sides of the furnace body 51 are slidably connected with heat dissipation strips 52, the lower side of the furnace body 51 is slidably connected with a heat dissipation seat 53, the lower end of the heat dissipation strip 52 and the two sides of the heat dissipation seat 53 are provided with L-shaped frames 54, the lower side of the heat dissipation seat 53 is provided with a rotating shaft 56, the middle position of the rotating shaft 56 is fixed with a cam 57 for pushing the heat dissipation seat 53 upward, the input end of the rotating shaft 56 is fixed with a reset motor 55, a heating tube is fixed at the rear side of the furnace body 51, a heat dissipation slot 9 for convenient air discharge is provided on the furnace body 51, the heat dissipation strip 52 is provided in the heat dissipation slot 9, the upper end of the heat dissipation seat 53 extends into the lower side of the heat dissipation slot 9, the top of the furnace body 51 is provided with a slide groove 8 at the position of the heat dissipation slot 9, the upper end of the heat dissipation strip 52 is fixed with a guide plate, the lower end of the heat dissipation strip 52 is rotatably connected to the upper end of the L-shaped frame 54, and the L-shaped An L-shaped groove is provided on the lower side of the frame 54, and a sliding seat is fixed on the heat sink 53 at the position of the L-shaped groove. The heating tube in the furnace body 51 is used to heat the inside thereof. When heat recovery and heat dissipation are needed, the rotating part of the reset motor 55 drives the cam 57 to rotate through the rotating shaft 56, and then the cam 57 no longer pushes upward on the bottom of the heat sink 53, and then the heat sink 53 falls and lands on the lower end of the L-shaped frame 54, and then the L-shaped frame 54 is flipped to push the heat sink 52 along the heat dissipation slot 9 into the furnace body 51, and then the heat sink 52 is located on the inner side of the furnace body 51, and the heat sink 53 is located below the furnace body 51, and then the heat sink 52 and the heat sink 53 will be separated from the heat dissipation slot 9 of the furnace body 51, and then it is convenient for the heat dissipation fan 3 to blow the outside air to the inner wall of the furnace body 51, and send the hot air inside the furnace body 51 into the heat recovery mechanism 6.

[0033] In this embodiment: the heat recovery mechanism 6 includes an air guide frame 61, which is fixed to the bottom of the heat insulation box 1, and a heat recovery seat 62 is fixed at the lower end of the air guide frame 61. A heat recovery pipe disc 63 is arranged inside the heat recovery seat 62, and an air outlet pipe frame 64 for discharging the air after the heat recovery is recovered is fixed to the outside of the heat recovery seat 62. A plurality of air outlets 7 are provided on the lower side of the heat recovery seat 62, and an air suction hood connected to the air outlet 7 is provided at the lower end of the air outlet pipe frame 64. An air outlet pipe is fixed to the rear side of the air outlet pipe frame 64, and a conical cavity for facilitating the hot air to pass through the heat absorption pipe disc 63 is provided inside the heat recovery seat 62, and a conical cavity connected to the air guide is provided at the upper end of the conical cavity. The through hole at the bottom of the frame 61 is connected, and the air is sent into the furnace body 51 by using the heat dissipation slot 9. The air entering the furnace body 51 flows out from the heat dissipation slot 9 at its lower end, and the outflowing hot air enters the air guide frame 61, and is introduced into the through hole of the heat recovery seat 62 through the air guide frame 61. The hot air passing through the through hole flows into the conical cavity of the heat recovery seat 62. At the same time, the hot air begins to heat and heat the water in the heat absorption pipe disc 63, and the cooled hot air enters the outlet pipe frame 64 from the outlet 7 of the heat recovery seat 62, and the cooled air is discharged through the outlet pipe of the outlet pipe frame 64.

[0034] Working principle: When in use, first put the workpiece to be heated into the furnace body 51, then close the protective door 2 to seal the front end of the heat insulation box 1 and the furnace body 51, and the heating tube in the furnace body 51 heats the inside of it. After the heating is completed, open the protective door 2. At this time, the front end of the heat insulation box 1 and the front end of the furnace body 51 are in an open state. Then take the workpiece out of the furnace body 51, and then close the protective door 2 to seal the front end of the heat insulation box 1 and the front end of the furnace body 51 again;

[0035] At this time, cold water is introduced from one end of the heat absorbing pipe coil 63 and discharged from the other end thereof, and then the heat insulation grid 4 is started to blow air between the heat insulation box 1 and the furnace body 51, and then the cold air blown in cools down the outside of the furnace body 51 and the inside of the heat insulation box 1 to form the first part of hot air, and the first part of the hot air will enter the through hole of the heat recovery seat 62 through the air guide frame 61, and at this time, the first part of the hot air will enter the conical cavity of the heat recovery seat 62 through the through hole, and then the first part of the hot air will heat the heat absorbing pipe coil 63 in the conical cavity of the heat recovery seat 62, and the first part of the hot air will cool down and pass through the air outlet 7 of the heat recovery seat 62, and the first part of the hot air will be discharged from the air outlet pipe frame 64;

[0036] When the outside of the furnace body 51 is cooled, the reset motor 55 drives the cam 57 to rotate through the rotating shaft 56, and then the cam 57 disengages from pushing the heat sink 53 upward. At this time, the heat sink 53 slides out from the lower side of the heat sink slot 9, and the heat sink 53 falls to its lower end position along the L-shaped groove of the L-shaped frame 54. At the same time, the upper end of the L-shaped frame 54 turns toward the inside of the furnace body 51, and then pushes the heat sink 52 to slide toward the inside of the furnace body 51 through the L-shaped frame 54. At this time, the heat sink 52 and the heat sink 53 is separated from the heat dissipation slot 9 of the furnace body 51. At this time, the furnace body 51 will introduce the air blown in by the heat dissipation fan 3 into the furnace body 51 through the gap between the heat dissipation slot 9 and the heat dissipation strip 52. The air entering the furnace body 51 is heated and flows out from the lower side of the heat dissipation slot 9 into the air guide frame 61. Then, this part of hot air follows the first part of hot air and enters the heat recovery seat 62. Then, the heat absorption pipe coil 63 is heated and heated by the hot wind and hot air, and then the heat recovery is repeated.

[0037] After the heat recovery of the entire furnace body 51 is completed, the reset motor 55 drives the cam 57 to rotate in the opposite direction through the rotating shaft 56, and then the cam 57 begins to push the heat sink 53 upward, and then the heat sink 53 moves upward along the L-shaped groove of the L-shaped frame 54, and the heat sink 53 closes the lower side of the heat dissipation slot 9. At the same time, as the heat sink 53 moves upward, the upper end of the L-shaped frame 54 flips toward the outside of the furnace body 51, and then the flipped L-shaped frame 54 drives the heat dissipation bar 52 to move toward the outside of the furnace body 51. At this time, the heat dissipation bar 52 begins to block both sides of the heat dissipation slot 9, and then the furnace body 51 forms a closed cavity.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An energy-saving and environment-friendly box-type electric furnace, comprising a heat-insulating box (1), a protective door (2) being hingedly connected to the front side of the heat-insulating box (1), cooling fans (3) being fixed to both sides of the heat-insulating box (1), and a plurality of heat-insulating grids (4) being arranged inside the heat-insulating box (1) at the positions of the cooling fans (3), characterized in that: It also includes a heat dissipation mechanism (5) and a heat recovery mechanism (6); The heat dissipation mechanism (5) comprises a furnace body (51), both sides of the furnace body (51) are slidably connected with heat dissipation bars (52), the lower side of the furnace body (51) is slidably connected with a heat dissipation seat (53), the lower end of the heat dissipation bar (52) and the positions on both sides of the heat dissipation seat (53) are provided with L-shaped frames (54), the lower side of the heat dissipation seat (53) is provided with a rotating shaft (56), the middle position of the rotating shaft (56) is fixed with a cam (57) for pushing the heat dissipation seat (53) upwards, the input end of the rotating shaft (56) is fixed with a reset motor (55), and the rear side position inside the furnace body (51) is fixed with a heating tube; The heat recovery mechanism (6) comprises an air guide frame (61), the air guide frame (61) is fixed to the bottom of the heat insulation box (1), a heat recovery seat (62) is fixed at the lower end of the air guide frame (61), a heat absorption pipe disc (63) is arranged inside the heat recovery seat (62), and an air outlet pipe frame (64) for discharging air after heat recovery is fixed on the outside of the heat recovery seat (62).

2. The energy-saving and environment-friendly box-type electric furnace according to claim 1 is characterized in that: The furnace body (51) is provided with a heat dissipation slot (9) for conveniently discharging air, the heat dissipation strip (52) is arranged in the heat dissipation slot (9), and the upper end of the heat dissipation seat (53) extends into the lower side of the heat dissipation slot (9).

3. The energy-saving and environment-friendly box-type electric furnace according to claim 1 is characterized in that: A slide groove (8) is provided at the top of the furnace body (51) at the position of the heat dissipation notch (9), and a guide plate is fixed to the upper end of the heat dissipation strip (52).

4. The energy-saving and environment-friendly box-type electric furnace according to claim 1 is characterized in that: The lower end of the heat dissipation strip (52) is rotatably connected to the upper end of the L-shaped frame (54); an L-shaped groove is provided on the lower side of the L-shaped frame (54); and a sliding seat is fixed on the heat dissipation seat (53) at the position of the L-shaped groove.

5. The energy-saving and environment-friendly box-type electric furnace according to claim 1 is characterized in that: A plurality of air outlets (7) are provided on the lower side of the heat recovery seat (62), an air intake hood communicating with the air outlets (7) is provided on the lower end of the air outlet pipe frame (64), and an air outlet pipe is fixed on the rear side of the air outlet pipe frame (64).

6. The energy-saving and environment-friendly box-type electric furnace according to claim 1, characterized in that: A conical cavity is provided inside the heat recovery seat (62) for facilitating hot air to pass through the heat absorbing pipe disc (63), and a through hole is provided at the upper end of the conical cavity and is connected to the bottom of the air guide frame (61).

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