Side protective cover for industrial electric heating furnace

Abstract

The invention discloses a side protective cover for an industrial electric heating furnace, and belongs to the field of protective covers, the side protective cover comprises a fixed frame, one side of the fixed frame is fixedly connected with a protective cover, one side of the inner surface of the protective cover is fixedly connected with a flow guide cover, a dustproof fan is arranged in the flow guide cover, and one side of the flow guide cover is fixedly connected with a filter screen. A second air outlet is formed in the outer surface of the flow guide cover, and a speed adjusting assembly used for adjusting the air speed is arranged on the side, away from the filter screen, of the flow guide cover. A narrow air outlet can be formed between the transverse plates of the two flow guide plates and the two mounting plates, and the air flow is constant, so that when the air flow at the narrow air outlet is sharply increased in flow speed and high-speed flowing air flow is in contact with a heating wire, a large amount of heat can be taken away in a short time, the heating wire is effectively cooled in a short time, and the service life of the heating wire is prolonged. And meanwhile, the airflow flowing at a high speed can blow off dust which is attached to the heating wire and the resistance wire and is difficult to remove.

Description

Technical Field

[0001] The present invention relates to the field of protective covers, and more specifically, to a side protective cover for an industrial electric heating furnace. Background Art

[0002] At present, industrial electric heating furnaces generally use bottom heating, and most use side wiring, that is, the resistance wires are led out of the furnace, and the connecting wires are directly connected to the resistance wires to achieve the purpose of power-on. Because the terminal posts are exposed on the outside, there are potential safety hazards: one is electric shock to the human body, and the other is that dust conduction may cause a short circuit of the heating element. Therefore, usually a cover is placed on the side to isolate dust and prevent electric shock. Most covers are simply a metal shell. The resistance wires and connecting wires generate a large amount of heat during operation, and the accumulation of heat will melt the insulating components of the connecting wires, easily causing a short circuit of the connecting wires and damaging the components inside the electric heating furnace. Summary of the Invention

[0003] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a side protective cover for an industrial electric heating furnace.

[0004] To solve the above problems, the present invention adopts the following technical solutions.

[0005] A side protective cover for an industrial electric heating furnace includes a fixed frame. One side of the fixed frame is fixedly connected with a protective cover. One side of the inner surface of the protective cover is fixedly connected with a diversion cover. A dust-proof fan is arranged inside the diversion cover. One side of the diversion cover is fixedly connected with a filter screen. The outer surface of the diversion cover is provided with a second air outlet. A speed regulation component for adjusting the wind speed is arranged on the side of the diversion cover away from the filter screen.

[0006] The speed regulation component includes a rectangular frame fixed on one side of the diversion cover. Axially symmetrically fixed connection plates are arranged on one side of the rectangular frame. A first servo motor is fixedly connected to the top of the connection plate. A bidirectional threaded rod is arranged at the output end of the first servo motor. A through groove is arranged on one side of the inner surface of the connection plate. An internally threaded sleeve plate is slidably connected inside the through groove. A diversion plate is arranged between the two internally threaded sleeve plates.

[0007] Further, the diversion plate is composed of a horizontal plate and an inclined plate. One side of the internally threaded sleeve plate penetrates through the inside of the through groove and is fixedly connected with the horizontal plate. The bidirectional threaded rod penetrates through the inside of the internally threaded sleeve plate and is threadedly connected. The inside of the rectangular frame is in communication with the inside of the diversion cover.

[0008] Further, observation rings are arranged on both sides of the inner surface of the protective cover. A control switch is arranged on one side of the protective cover. A switching component is arranged on the side of the protective cover away from the control switch. The outer surface of the diversion cover is provided with a second air outlet.

[0009] Further, the switching component includes a second servo motor fixed on one side of the protective cover and a rotating cover rotating on the outer surface of the diversion cover. The output end of the second servo motor extends into the interior of the protective cover and is fixedly connected with a gear. Six groups of first air outlets are evenly arranged inside the rotating cover. An annular rack is fixedly connected to the outer surface of the rotating cover, and the gear meshes with the annular rack.

[0010] Further, convection components for air convection and dust removal are arranged at the edges of the top and bottom of the protective cover. The convection components include two return covers fixed on the top and bottom of the protective cover. A return pipe is arranged on one side of the return cover, and one ends of the two return pipes are fixedly connected with a fixed cover.

[0011] Further, the fixed cover is simultaneously fixedly connected to the side of the protective cover close to the filter screen. The air inlet of the dust-proof fan is located inside the fixed cover. The interior of the return cover is communicated with the interior of the protective cover, and the fixed cover is communicated with the interior of the return cover through the return pipe.

[0012] Further, a temperature reduction component for cooling the air flow is arranged on the upper surface of the protective cover. The temperature reduction component includes temperature reduction bins fixed on the top and bottom of the protective cover and heat conduction fins fixed inside the return pipe. A liquid injection pipe is arranged on the top of the temperature reduction bin. Two metal hollow vertical plates are connected between the two temperature reduction bins. A metal hollow horizontal plate is fixedly connected to one side of the two metal hollow vertical plates close to each other.

[0013] Further, the metal hollow vertical plate penetrates through the interior of the rectangular frame. The metal hollow horizontal plate is located inside the rectangular frame. The two temperature reduction bins are communicated with each other through the metal hollow vertical plate. The metal hollow horizontal plate is communicated with the metal hollow vertical plate. Both sides of the heat conduction fin extend into the interior of the temperature reduction bin.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this solution, by setting a speed regulation component, a narrow air outlet is formed between the cross plates of the two diversion plates and the two mounting plates. When the air flow blown out by the dust-proof fan is constant, the air flow velocity will increase sharply at the narrow air outlet. When the high-speed flowing air contacts the heating wire, a large amount of heat can be taken away in a short time, and the dense part of the heating wire can be effectively cooled in a short time, with high heat dissipation efficiency. At the same time, the high-speed flowing air can blow off the dust that is difficult to remove and adheres to the heating wire and the resistance wire; 2. This solution is provided with a convection component, enabling air to enter from the inside of the protective cover into the inside of the fixed cover. The strong adsorption force of the dust-proof fan will adsorb the dust in the air flow on the surface of the filter screen, filtering the dust, effectively collecting and cleaning the dust inside the protective cover, while preventing external dust from continuously entering the protective cover, ensuring the cleanliness of the surface of the heating wire and electrical components, and facilitating heat dissipation at the same time; 3. This solution is provided with a cooling component. When there is air flow inside the return pipe, and the air flow passes through the heat-conducting fins, the low-temperature heat-conducting fins will initially cool the air flow, effectively reducing the temperature of the air flow. The air flow then enters the inside of the rectangular frame. Since the metal hollow vertical plate penetrates the rectangular frame, when the air flow passes through the rectangular frame, it will come into contact with the metal hollow vertical plate, enabling secondary cooling, and thus the cooled air flow can be blown towards the heating wire. Together with the high-speed flowing air flow, the cooling effect can be further improved. Description of the Drawings

[0015] Figure 1 is the structural schematic diagram of the present invention Figure 1 。

[0016] Figure 2 is the structural schematic diagram of the present invention Figure 2 。

[0017] Figure 3 is the schematic diagram of the internal structure of the protective cover of the present invention.

[0018] Figure 4 is the schematic diagram of the structure of the rotating cover of the present invention.

[0019] Figure 5 is the schematic diagram of the structure of the speed regulation component of the present invention.

[0020] Figure 6 is the schematic sectional view of the present invention.

[0021] Figure 7 is the schematic diagram of the structure of the cooling component of the present invention.

[0022] Figure 8 is the schematic diagram of the structure of the heat-conducting fins of the present invention.

[0023] Explanation of the reference numerals in the drawings: 1. Fixed frame; 2. Observation circle; 3. Protective cover; 4. Flow guide cover; 5. Speed regulation component; 51. Mounting plate; 52. First servo motor; 53. Rectangular frame; 54. Through groove; 55. Flow guide plate; 56. Bidirectional threaded rod; 57. Inner threaded sleeve plate; 58. Convection component; 581. Return cover; 582. Return pipe; 583. Fixed cover; 59. Cooling component; 591. Cooling bin; 592. Liquid injection pipe; 593. Metal hollow vertical plate; 594. Metal hollow horizontal plate; 595. Heat conduction fin; 6. Control switch; 7. Switching component; 71. Second servo motor; 72. First air outlet; 73. Gear; 74. Rotating cover; 75. Annular rack; 8. Dust-proof fan; 9. Filter screen; 10. Second air outlet. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 8 , a side protective cover for an industrial electric heating furnace, including a fixed frame 1, one side of the fixed frame 1 is fixedly connected with a protective cover 3, one side of the inner surface of the protective cover 3 is fixedly connected with a diversion cover 4, a dust-proof fan 8 is arranged inside the diversion cover 4, one side of the diversion cover 4 is fixedly connected with a filter screen 9, a second air outlet 10 is opened on the outer surface of the diversion cover 4, and a speed regulation component 5 for adjusting the wind speed is arranged on the side of the diversion cover 4 away from the filter screen 9.

[0026] As Figure 3 shown, the speed regulation component 5 includes a rectangular frame 53 fixed on one side of the diversion cover 4, mounting plates 51 are symmetrically fixedly connected to one side of the rectangular frame 53, a first servo motor 52 is fixedly connected to the top of the mounting plate 51, a bidirectional threaded rod 56 is arranged at the output end of the first servo motor 52, a through groove 54 is opened on one side of the inner surface of the mounting plate 51, an internally threaded sleeve plate 57 is slidably connected inside the through groove 54, and a diversion plate 55 is arranged between the two internally threaded sleeve plates 57.

[0027] The diversion plate 55 is composed of a horizontal plate and an inclined plate. One side of the internally threaded sleeve plate 57 penetrates through the inside of the through groove 54 and is fixedly connected with the horizontal plate. The bidirectional threaded rod 56 penetrates through the inside of the internally threaded sleeve plate 57 and is threadedly connected. The inside of the rectangular frame 53 is communicated with the inside of the diversion cover 4.

[0028] When the electric motor hot stove is working, the heating wire will generate a certain amount of heat. Regarding the heat dissipation method, currently, mainly the dust-proof fan 8 is used to blow air on the heating wire for heat dissipation. However, the air flow speed generated by the dust-proof fan 8 is small and the area is wide, resulting in a relatively slow heat dissipation efficiency at the dense part of the heating wire. Moreover, the dust attached to the heating wire and electrical components cannot be quickly and timely removed, and in the place where the lines are dense, it is even more impossible to effectively clean the dust. Therefore, when dissipating heat from the heating wire, the first servo motor 52 is turned on by the control switch 6. The first servo motor 52 drives the bidirectional threaded rod 56 to rotate. Under the action of the thread, the bidirectional threaded rod 56 drives the two internally threaded sleeve plates 57 to approach each other. The two internally threaded sleeve plates 57 simultaneously drive the flow guide plate 55 to approach each other between the two mounting plates 51. When the inclined plates on the two flow guide plates 55 are aligned with the upper and lower edges of the rectangular frame 53, a narrow air outlet is formed between the horizontal plates of the two flow guide plates 55 and the two mounting plates 51. At the same time, the air volume blown by the dust-proof fan 8 is certain, and the cross-sectional area of the air outlet formed by the horizontal plates of the two flow guide plates 55 and the two mounting plates 51 is smaller than the cross-sectional area of the rectangular frame 53. Therefore, the air flow is discharged from the air outlet formed by the horizontal plates of the flow guide plate 55 and the two mounting plates 51, and the flow rate increases sharply. When the high-speed flowing air contacts the dense heating wire, a large amount of heat can be carried away in a short time, effectively dissipating heat at the dense part of the heating wire in a short time, with high heat dissipation efficiency. At the same time, the high-speed flowing air can blow off the difficult-to-remove dust attached to the heating wire and the resistance wire, and the flow guide plate 55 is provided with inclined plates, which can smoothly guide the air flow and reduce the loss of air volume during the flow, minimizing the consumption of air flow to the greatest extent.

[0029] Observation rings 2 are provided on both sides of the inner surface of the protective cover 3. A control switch 6 is provided on one side of the protective cover 3, and a switching component 7 is provided on the side of the protective cover 3 away from the control switch 6. A second air outlet 10 is opened on the outer surface of the flow guide cover 4.

[0030] As Figures 2 - 4 shown, the switching component 7 includes a second servo motor 71 fixed on one side of the protective cover 3 and a rotating cover 74 rotating on the outer surface of the flow guide cover 4. The output end of the second servo motor 71 extends into the interior of the protective cover 3 and is fixedly connected with a gear 73. Six groups of first air outlets 72 are evenly opened inside the rotating cover 74. An annular rack 75 is fixedly connected to the outer surface of the rotating cover 74, and the gear 73 and the annular rack 75 are meshed with each other.

[0031] When the demand for temperature reduction is low, the second servo motor 71 can be controlled to turn on the switch 6 to drive the gear 73 to rotate. The gear 73 synchronously drives the annular rack 75 to rotate, driving the first air outlet 72 and the second air outlet 10 on the flow guide cover 4 to coincide, so that the inside of the flow guide cover 4 is directly communicated with the inside of the protective cover 3. The dust-proof fan 8 blows air into the inside of the protective cover 3 through the second air outlet 10 and the first air outlet 72, and large-area heat dissipation can be carried out.

[0032] As Figure 6 shown, convection components 58 for air convection and dust removal are provided at the edges of the top and bottom of the protective cover 3. The convection components 58 include two return covers 581 fixed to the top and bottom of the protective cover 3. One side of the return cover 581 is provided with a return pipe 582. One ends of the two return pipes 582 are fixedly connected with a fixed cover 583.

[0033] The fixed cover 583 is also fixedly connected to the side of the protective cover 3 close to the filter screen 9. The air inlet of the dust-proof fan 8 is located inside the fixed cover 583. The inside of the return cover 581 is communicated with the inside of the protective cover 3. The fixed cover 583 is communicated with the inside of the return cover 581 through the return pipe 582.

[0034] When the high-speed air flow blows on the hot wire for heat dissipation, at the same time, dust will be blown off and scattered in various corners inside the protective cover 3. When the dust-proof fan 8 stops working, the scattered dust will fall on the hot wire and various electrical components again. Therefore, when the dust-proof fan 8 is working, the air flow blown into the inside of the protective cover 3 will enter the inside of the return cover 581, and then enter the inside of the fixed cover 583 through the inside of the return cover 581 and the return pipe 582. When entering the inside of the fixed cover 583, the strong adsorption force of the dust-proof fan 8 will adsorb the dust in the air flow on the surface of the filter screen 9, filter the dust, effectively collect and clean the dust inside the protective cover 3, and at the same time prevent the continuous entry of external dust into the inside of the protective cover 3, which can ensure the cleanliness of the surface of the hot wire and electrical components, and is conducive to heat dissipation.

[0035] As Figures 6 - 8 shown, a temperature reduction component 59 for cooling the air flow is provided on the upper surface of the protective cover 3. The temperature reduction component 59 includes a temperature reduction chamber 591 fixed to the top and bottom of the protective cover 3 and a heat conduction fin 595 fixed inside the return pipe 582. A liquid injection pipe 592 is provided at the top of the temperature reduction chamber 591. Two metal hollow vertical plates 593 are connected between the two temperature reduction chambers 591. One sides of the two metal hollow vertical plates 593 close to each other are fixedly connected with a metal hollow horizontal plate 594.

[0036] The metal hollow vertical plate 593 penetrates through the interior of the rectangular frame 53. The metal hollow horizontal plate 594 is located inside the rectangular frame 53. The two cooling chambers 591 communicate with each other through the metal hollow vertical plate 593. The metal hollow horizontal plate 594 communicates with the metal hollow vertical plate 593. Both sides of the heat conduction fin 595 extend into the interior of the cooling chamber 591.

[0037] Although the dust inside the air flow can be adsorbed and collected, the air flow not only carries a large amount of dust but also a large amount of heat. If the heat cannot be dissipated in time, it will blow towards the connection hot wire, and dust will continuously adhere to the connection hot wire and some electrical components, resulting in low heat dissipation efficiency, a large amount of heat cannot be dissipated in time, which will accelerate the aging and melting of the insulating material, and increase the risk of short circuit of the connection hot wire. Therefore, cooling chambers 591 are arranged around the return pipe 582. Cooling water is added into the interior of the cooling chamber 591 through the liquid injection pipe 592. The cooling water will enter the lower cooling chamber 591 through the metal hollow vertical plate 593 until the interiors of the two cooling chambers 591 are filled. When there is air flow inside the return pipe 582, first, the cooling water will effectively cool the interior of the heat conduction fin 595, making the heat conduction fin 595 in a low-temperature state. When the air flow passes through the heat conduction fin 595, it will initially cool the air flow, effectively reducing the temperature of the air flow. When the air flow enters the fixed cover 583, passes through the dust-proof fan 8 and enters the interior of the guide cover 4, and then enters the interior of the rectangular frame 53. Since the metal hollow vertical plate 593 penetrates through the rectangular frame 53, when the air flow passes through the rectangular frame 53, it will come into contact with the metal hollow vertical plate 593. Moreover, the metal hollow horizontal plate 594 is located inside the rectangular frame 53, which can increase the contact area with the air flow and can quickly perform secondary cooling, so that the cooled air flow can be blown towards the connection hot wire, and combined with the high-speed flowing air flow, the cooling effect can be further improved.

[0038] Usage method: When in use, the second servo motor 71 can be controlled to be turned on through the control switch 6 to drive the gear 73 to rotate. The gear 73 synchronously drives the annular rack 75 to rotate, driving the first air outlet 72 and the second air outlet 10 on the guide cover 4 to coincide, so that the interior of the guide cover 4 is directly communicated with the interior of the protective cover 3. The dust-proof fan 8 blows air into the interior of the protective cover 3 through the second air outlet 10 and the first air outlet 72, and large-area heat dissipation can be carried out. When the heat is excessive at the place where the circuit is dense, that is, the place facing the rectangular frame 53, the rectangular frame 53 is started. Through the cooperation of the guide plate 55 and the rectangular frame 53, the flow rate of the air flow can be increased, and the connection hot wire at the dense place can be quickly dissipated. When the dust-proof fan 8 is working, the air flow blown into the interior of the protective cover 3 will enter the interior of the return air cover 581, and then enter the interior of the fixed cover 583 through the interior of the return air cover 581 and the return air pipe 582. When entering the interior of the fixed cover 583, the strong adsorption force of the dust-proof fan 8 will adsorb the dust in the air flow on the surface of the filter screen 9; When there is air flow in the interior of the return air pipe 582, first, the cooling water will effectively cool the interior of the heat conduction fins 595, making the heat conduction fins 595 in a low-temperature state. When the air flow passes through the heat conduction fins 595, it will initially cool the air flow, effectively reducing the temperature of the air flow. When the air flow enters the fixed cover 583, passes through the dust-proof fan 8 and enters the interior of the guide cover 4, and then enters the interior of the rectangular frame 53. Since the metal hollow vertical plate 593 penetrates the rectangular frame 53, when the air flow passes through the rectangular frame 53, it will come into contact with the metal hollow vertical plate 593. Moreover, the metal hollow horizontal plate 594 is located inside the rectangular frame 53, which can increase the contact area with the air flow and can perform secondary cooling.

[0039] The above is only the preferred specific implementation manner of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. A side protective cover for an industrial electric heating furnace, comprising a fixed frame (1), a protective cover (3) fixedly connected to one side of the fixed frame (1), a flow guide cover (4) fixedly connected to one side of the inner surface of the protective cover (3), a dustproof fan (8) arranged inside the flow guide cover (4), and a filter screen (9) fixedly connected to one side of the flow guide cover (4), characterized in that: A speed regulating component (5) for regulating wind speed is provided on a side of the air guide cover (4) away from the filter screen (9); The speed regulating assembly (5) comprises a rectangular frame (53) fixed to one side of the air deflector (4); a mounting plate (51) is axially symmetrically fixedly connected to one side of the rectangular frame (53); a first servo motor (52) is fixedly connected to the top of the mounting plate (51); a bidirectional threaded rod (56) is provided at the output end of the first servo motor (52); a through groove (54) is provided on one side of the inner surface of the mounting plate (51); an internal threaded sleeve plate (57) is slidably connected to the interior of the through groove (54); and a air deflector plate (55) is provided between the two internal threaded sleeve plates (57).

2. The side protective cover for an industrial electric heating furnace according to claim 1, characterized in that: The guide plate (55) is composed of a horizontal plate and an inclined plate. One side of the internally threaded sleeve (57) passes through the interior of the through slot (54) and is fixedly connected to the horizontal plate. The bidirectional threaded rod (56) passes through the interior of the internally threaded sleeve (57) and is connected via threads. The interior of the rectangular frame (53) is in communication with the interior of the guide cover (4).

3. The side protective cover for an industrial electric heating furnace according to claim 2, characterized in that: Observation circles (2) are arranged on both sides of the inner surface of the protective cover (3), a control switch (6) is arranged on one side of the protective cover (3), a switching component (7) is arranged on the side of the protective cover (3) away from the control switch (6), and a second air outlet (10) is arranged on the outer surface of the deflector cover (4).

4. The side protection cover for an industrial electric heating furnace according to claim 3 is characterized in that: The switching assembly (7) comprises a second servo motor (71) fixed to one side of the protective cover (3) and a rotating cover (74) rotating on the outer surface of the air guide cover (4); the output end of the second servo motor (71) extends to the inside of the protective cover (3) and is fixedly connected to a gear (73); six groups of first air outlets (72) are evenly arranged inside the rotating cover (74); an annular rack (75) is fixedly connected to the outer surface of the rotating cover (74); the gear (73) and the annular rack (75) are meshed with each other.

5. The side protection cover for an industrial electric heating furnace according to claim 4, characterized in that: Convection components (58) for air convection and dust removal are arranged at the edges of the top and bottom of the protective cover (3), and the convection components (58) include two return covers (581) fixed to the top and bottom of the protective cover (3), a return pipe (582) is arranged on one side of the return cover (581), and one end of the two return pipes (582) is fixedly connected to a fixed cover (583).

6. The side protection cover for an industrial electric heating furnace according to claim 5, characterized in that: The fixed cover (583) is also fixedly connected to a side of the protective cover (3) close to the filter (9); an air inlet of the dustproof fan (8) is located inside the fixed cover (583); the interior of the return cover (581) is connected to the interior of the protective cover (3); and the fixed cover (583) is connected to the interior of the return cover (581) via a return pipe (582).

7. The side protection cover for an industrial electric heating furnace according to claim 6, characterized in that: A cooling component (59) for cooling the airflow is arranged on the upper surface of the protective cover (3), and the cooling component (59) comprises cooling chambers (591) fixed at the top and bottom of the protective cover (3) and heat-conducting fins (595) fixed inside the return pipe (582); a liquid injection pipe (592) is arranged at the top of the cooling chamber (591), two metal hollow vertical plates (593) are connected between the two cooling chambers (591), and a metal hollow horizontal plate (594) is fixedly connected to the sides of the two metal hollow vertical plates (593) close to each other.

8. The side protection cover for an industrial electric heating furnace according to claim 7, characterized in that: The metal hollow vertical plate (593) passes through the interior of the rectangular frame (53), the metal hollow horizontal plate (594) is located inside the rectangular frame (53), the two cooling chambers (591) are interconnected via the metal hollow vertical plate (593), the metal hollow horizontal plate (594) and the metal hollow vertical plate (593) are interconnected, and both sides of the heat conducting fins (595) extend into the interior of the cooling chamber (591).

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