Energy-saving coal hot air furnace

Abstract

The invention provides an energy-saving coal hot air furnace, and relates to the technical field of coal hot air furnaces. The device comprises a main body, the upper end of the main body is fixedly connected with heat exchange equipment, the inner side of the main body is provided with a combustion chamber and an ash chamber, the front side surfaces of the combustion chamber and the ash chamber are slidably connected with a movable door, the inner side surface of the combustion chamber is provided with an ash leakage device, and the inner side surface, located at the left end, of the ash chamber is fixedly connected with an inclined panel; and the right end of the main body is fixedly connected with a shell. The effect of adjusting the coal consumption is achieved by adjusting the proportion of the moving block in the temporary storage box, the situation that coal is wasted due to the fact that too much coal is put in the temporary storage box and fire is too strong during use is prevented, the effect of continuously and discontinuously putting the coal is achieved by arranging a supporting block and an opening and closing plate, and use of the coal is saved; and through cooperation of the toothed plate and the eccentric wheel, coal is pushed, meanwhile, the ash leakage sieve plate is vibrated to shake off coal ash into the ash chamber, the coal ash accumulated in gaps of the ash leakage sieve plate is removed, and the combustion efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal-fired hot blast furnaces, in particular to an energy-saving coal-fired hot blast furnace. Background Art

[0002] White carbon black is a general term for white powdered X-ray amorphous silicic acid and silicate products, mainly referring to precipitated silica, fumed silica and ultrafine silica gel, and also including powdered synthetic aluminum silicate and calcium silicate. White carbon black is a porous substance, and its composition can be expressed by SiO2·nH2O, where nH2O exists in the form of surface hydroxyl groups. After the reaction of making white carbon black is completed, the liquid is washed and dehydrated by a filter press, and after the qualified white carbon black slurry is obtained by pulping, it needs to be dried to obtain the finished white carbon black product.

[0003] The existing drying equipment heats the heat exchange pipe inside the hot blast furnace by burning coal and then blows out the heated air to achieve the effect of blowing out hot air, such as "the invention patent application with publication number CN111735203A discloses a heating blast furnace", but during the use of this hot blast furnace, coal residues will gradually accumulate on the ash leakage comb, which may cause the leakage hole to be blocked and thus lead to reduced combustion efficiency or even flameout. Furthermore, "the invention patent application with publication number CN103629813A discloses a coal-fired hot blast furnace", which realizes the effect of automatically adding coal to save labor costs, but the number of coal blocks added is fixed. When a lower temperature is required, it may cause excess heat and waste of resources. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides an energy-saving coal-fired hot blast furnace, which solves the problems of clogging of leakage holes caused by accumulation of coal residue ash leakage combs and inability to adjust the amount of coal added.

[0005] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: an energy-saving coal-fired hot air furnace, comprising a main body, a heat exchange device is fixedly connected to the upper end of the main body, a combustion chamber and an ash chamber are arranged on the inner side of the main body, movable doors are slidably connected to the front surfaces of the combustion chamber and the ash chamber, an ash leakage device is arranged on the inner surface of the combustion chamber, an inclined panel is fixedly connected to the inner surface of the ash chamber at the left end, the right end of the main body is fixedly connected to a shell, a limiting device is arranged on the inner surface of the shell, an adjusting device is arranged on the upper end of the shell at the limiting device, a hot air pipe is fixedly connected to the front surface of the heat exchange device, a blowing device is fixedly connected to the left surface of the heat exchange device, and a smoke exhaust pipe is fixedly connected to the upper surface of the heat exchange device.

[0006] Preferably, the ash leakage device includes an ash leakage screen plate, a connecting block, a connecting rod, an eccentric wheel, a pushing block, a tooth plate and a cylinder, the ash leakage screen plate is slidably connected to the inner surface of the combustion chamber, the connecting block is fixedly connected to the right side surface of the ash leakage screen plate, the inner surface of the connecting block is fixedly connected with a first short rod, and the left end of the connecting rod is movably connected to the inner surface of the connecting block through the first short rod.

[0007] Preferably, the right end of the connecting rod is fixedly connected to a second short rod, the connecting rod is movably connected to the side surface of the eccentric wheel near the edge through the second short rod, the eccentric wheel is rotatably connected to the inner surface of the main body, the cylinder is fixedly connected to the inner surface of the shell, the pushing block is slidably connected to the inner surface of the shell, the right end of the pushing block is fixedly connected to the output end of the cylinder, and the tooth plate is fixedly connected to the lower surface of the pushing block.

[0008] Preferably, the limiting device includes a slope block, an opening and closing door, a moving box, a limiting plate, a sliding rod, a spring and a support block, the moving box is slidably connected to the inner surface of the shell, the limiting plate is fixedly connected to the side surface of the moving box, the sliding rod is fixedly connected to the upper surface of the limiting plate, the sliding rod is slidably connected to the inner surface of the shell, and the spring is sleeved on the side surface of the sliding rod.

[0009] Preferably, the upper end of the spring is fixedly connected to the inner surface of the shell, the lower end of the spring is fixedly connected to the upper surface of the limit plate, the right end of the opening and closing door is fixedly connected to the first hinge, the opening and closing door is movably connected to the lower surface of the moving box through the first hinge, the inclined surface block is fixedly connected to the right side surface of the moving box, the inclined surface of the inclined surface block coincides with the inclined surface of the pushing block, and the support block is fixedly connected to the inner surface of the moving box.

[0010] Preferably, the adjustment device includes a rotating handle, a bidirectional screw rod, a moving block, a temporary storage box, a fixed plate, a second hinge, an opening and closing plate and a funnel. The temporary storage box is fixedly connected to the inner surface of the shell, the lower end of the funnel is fixedly connected to the upper surface of the temporary storage box, the funnel is connected to the interior of the temporary storage box, the opening and closing plate is movably connected to the lower surface of the temporary storage box through the second hinge, and the upper end of the moving box is slidably connected to the lower surface of the temporary storage box.

[0011] Preferably, the second hinge is fixedly connected to the lower surface of the temporary storage box, the moving blocks are provided with two and are slidably connected to the inner surfaces of the two ends of the temporary storage box, the fixed plate is fixedly connected to the side surface of the moving block, the bidirectional screw is threadedly connected to the inner surface of the fixed plate, the bidirectional screw is rotatably connected to the inner surface of the shell, and the rotating handle is fixedly connected to the front end of the bidirectional screw.

[0012] Working principle: open the movable door 8 on the combustion chamber 11 to bring in coal and ignite it. The heat is transferred to the heat exchange device 3 to heat the pipes therein. Then, open the blowing device 4 to blow air. After the air passes through the pipes in the heat exchange device 3 for heat exchange, hot air is blown out from the hot air pipe 10. When coal needs to be added later, start the cylinder 607 to drive the push block 605 to move. Through the inclined block 701 and the inclined surface on the push block 605, it moves to the bottom of the inclined block 701. The inclined block 701 moves upward, thereby causing the moving box 703 to move upward. The moving box 703 moves upward, driving the support block 707 to move upward, thereby driving the opening and closing plate 507 to move the temporary storage box 504 down The opening of the square is closed, and then the coal is added from the funnel 508 to the temporary storage box 504 for temporary storage. When the amount of coal needs to be adjusted, the handle 501 can be rotated to drive the bidirectional screw rod 502 to rotate. The bidirectional screw rod 502 is divided into two sections of threads with different thread directions. When the bidirectional screw rod 502 rotates, it drives the fixed plate 505 to move toward the middle of the bidirectional screw rod 502, thereby driving the moving block 503 to move toward the middle of the temporary storage box 504, adjusting the space inside the temporary storage box 504, thereby adjusting the amount of coal temporarily stored in the temporary storage box 504. When the temporary storage box 504 is full of coal, the cylinder 607 is started to drive the push block 605 to retreat. At this time, the moving box 70 3 moves downward, driving the support block 707 to move downward, causing the opening and closing plate 507 to open, and the coal in the temporary storage box 504 falls into the mobile box 703, and then the cylinder 607 is started to push forward to drive the mobile box 703 to move upward. The opening and closing door 702 opens due to its own gravity, and the coal falls into the shell 2. The push block 605 continues to move to close the opening and closing door 702, and then pushes the coal to move to the ash leakage screen plate 601, and at the same time pushes the burning coal to the left for a distance, and the new carbon and the old carbon contact and ignite. When pushing the coal, the lower part of the tooth plate 606 moves to the upper surface of the eccentric wheel 604 to mesh, thereby driving the eccentric wheel 604 to rotate, and the eccentric wheel 604 rotates. The heart wheel 604 rotates, and drives the ash leakage screen plate 601 to move left and right through the connecting rod 603 and the connecting block 602 to produce a vibration effect. The burned coal ash falls from the gap of the ash leakage screen plate 601 into the ash chamber 12 for collection through the vibration. The larger coal blocks pushed aside are pushed by the later coal blocks to fall into the ash chamber 12 from the larger gap between the combustion chamber 11 and the pushing block 605 after combustion, preventing larger coal cinders from piling up on the ash leakage screen plate 601 and causing blockage. At this time, the coal blocks are put into the funnel 508 again and dropped into the temporary storage box 504 for storage. The pushing block 605 moves to the right to the right end of the inclined block 701 and then moves to the left again to repeat the operation.

[0013] (III) Beneficial effects The present invention provides an energy-saving coal-fired hot air furnace. It has the following beneficial effects: 1. The amount of coal can be adjusted by adjusting the proportion of the mobile block in the temporary storage box to prevent excessive coal from being put in during use and causing excessive fire, thereby wasting coal.

[0014] 2. By setting support blocks and opening and closing plates, the effect of continuous and intermittent coal delivery is achieved, thus saving the use of coal.

[0015] 3. By setting the tooth plate and the eccentric wheel in cooperation, the ash leakage screen plate is vibrated while pushing the coal to shake the coal ash into the ash chamber, and the coal ash accumulated in the gap of the ash leakage screen plate is cleaned, thereby improving the combustion efficiency.

[0016] 4. When pushing the coal block, the pushing block pushes the burned coal to the edge of the ash screen plate. After repeated many times, larger coal slag falls from the edge of the ash screen plate into the ash chamber to prevent a large amount of coal slag from accumulating on the ash screen plate and causing poor combustion efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an energy-saving coal-fired hot air stove proposed by the present invention; Figure 2 The internal structure of an energy-saving coal-fired hot air furnace proposed by the present invention is schematically shown. Figure 1 ; Figure 3 The internal structure of an energy-saving coal-fired hot air furnace proposed by the present invention is schematically shown. Figure 2 ; Figure 4 The structure of the ash leakage device of an energy-saving coal-fired hot blast furnace proposed by the present invention is schematically shown. Figure 1 ; Figure 5 The structure of the ash leakage device of an energy-saving coal-fired hot blast furnace proposed by the present invention is schematically shown. Figure 2 ; Figure 6 A schematic diagram of the structure of a limiting device for an energy-saving coal-fired hot air stove proposed by the present invention Figure 1 ; Figure 7 A schematic diagram of the structure of a limiting device for an energy-saving coal-fired hot air stove proposed by the present invention Figure 2 ; Figure 8 A schematic diagram of the structure of an energy-saving coal-fired hot air stove regulating device proposed by the present invention Figure 1 ; Fig. 9 A schematic diagram of the structure of an energy-saving coal-fired hot air stove regulating device proposed by the present invention Figure 2 ; Fig.10 A schematic diagram of the structure of an energy-saving coal-fired hot air stove regulating device proposed by the present invention Figure 3 .

[0018] Among them, 1. main body; 2. shell; 3. heat exchange equipment; 4. blowing equipment; 5. adjusting device; 501. rotating handle; 502. two-way screw rod; 503. moving block; 504. temporary storage box; 505. fixing plate; 506. second hinge; 507. opening and closing plate; 508. funnel; 6. ash leakage device; 601. ash leakage screen plate; 602. connecting block; 603. connecting rod; 604. eccentric wheel; 605. pushing block; 606. tooth plate; 607. cylinder; 7. limiting device; 701. inclined block; 702. opening and closing door; 703. moving box; 704. limiting plate; 705. sliding rod; 706. spring; 707. supporting block; 8. moving door; 9. exhaust pipe; 10. hot air pipe; 11. combustion chamber; 12. ash chamber; 13. inclined panel. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1-10 As shown, an embodiment of the present invention provides an energy-saving coal-fired hot blast furnace, comprising a main body 1, a heat exchange device 3 is fixedly connected to the upper end of the main body 1, a combustion chamber 11 and an ash chamber 12 are arranged on the inner side of the main body 1, a movable door 8 is slidably connected to the front side surfaces of the combustion chamber 11 and the ash chamber 12, an ash leakage device 6 is arranged on the inner side surface of the combustion chamber 11, an inclined panel 13 is fixedly connected to the inner side surface of the ash chamber 12 at the left end, a shell 2 is fixedly connected to the right end of the main body 1, a limiting device 7 is arranged on the inner side surface of the shell 2, an adjusting device 5 is arranged on the upper end of the limiting device 7 of the shell 2, and a heat exchange device 3 is fixedly connected to the front side surface of the heat exchange device 3. The air duct 10, the left surface of the heat exchange device 3 is fixedly connected with a blowing device 4, the upper surface of the heat exchange device 3 is fixedly connected with a smoke exhaust pipe 9, the heat exchange device 3 is an existing device, and a ventilation duct is arranged inside. The heat generated inside the combustion chamber 11 heats the ventilation duct in the heat exchange device 3, causing the air inside the duct to be heated, and then the blowing device 4 blows air into the duct and then blows out the hot air from the hot air pipe 10 after passing through the duct. The blowing device 4 is an existing device, and the smoke exhaust pipe 9 is the ventilation duct in the combustion chamber 11, which has an effect similar to a chimney. When the ash in the ash chamber 12 needs to be cleaned, the ash can be scraped out by a manual handheld scraper.

[0021] The ash leakage device 6 includes an ash leakage screen plate 601, a connecting block 602, a connecting rod 603, an eccentric wheel 604, a pushing block 605, a tooth plate 606 and a cylinder 607. The ash leakage screen plate 601 is slidably connected to the inner surface of the combustion chamber 11, the connecting block 602 is fixedly connected to the right side surface of the ash leakage screen plate 601, the inner surface of the connecting block 602 is fixedly connected to a first short rod, and the left end of the connecting rod 603 is movably connected to the inner surface of the connecting block 602 through the first short rod. The right end of the connecting rod 603 is fixedly connected to a second short rod, and the connecting rod 603 is movably connected to the side surface of the eccentric wheel 604 near the edge through the second short rod. The eccentric wheel 604 is rotatably connected to the inner surface of the main body 1, the cylinder 607 is fixedly connected to the inner surface of the shell 2, the pushing block 605 is slidably connected to the inner surface of the shell 2, the right end of the pushing block 605 is fixedly connected to the output end of the cylinder 607, and the tooth plate 606 is fixedly connected to the lower surface of the pushing block 605.

[0022] The new carbon and the old carbon come into contact and are ignited. When the coal is pushed, the lower part of the tooth plate 606 moves to the upper surface of the eccentric wheel 604 for meshing, thereby driving the eccentric wheel 604 to rotate. The eccentric wheel 604 rotates, and drives the ash leakage screen plate 601 to move left and right through the connecting rod 603 and the connecting block 602 to produce a vibration effect. The burned coal ash falls from the gap of the ash leakage screen plate 601 into the ash chamber 12 for collection through the vibration. After the larger coal blocks pushed aside are burned, they are pushed by the later coal blocks to fall into the larger gap between the combustion chamber 11 and the pushing block 605 into the ash chamber 12, preventing larger coal cinders from stacking on the ash leakage screen plate 601 and causing blockage. At this time, the coal blocks are put into the funnel 508 again and dropped into the temporary storage box 504 for storage.

[0023] When the tooth plate 606 is engaged with the eccentric wheel 604, the left end of the tooth plate 606 stops moving when it moves to a position close to the side of the ash leakage screen plate 601. The cylinder 607 is an existing device that drives the piston therein to work by delivering gas. The cylinder 607 can also be replaced by other devices that can drive the push block 605 to move, such as an electric push rod.

[0024] The limiting device 7 includes an inclined block 701, an opening and closing door 702, a moving box 703, a limiting plate 704, a sliding rod 705, a spring 706 and a supporting block 707. The moving box 703 is slidably connected to the inner surface of the shell 2, the limiting plate 704 is fixedly connected to the side surface of the moving box 703, the sliding rod 705 is fixedly connected to the upper surface of the limiting plate 704, the sliding rod 705 is slidably connected to the inner surface of the shell 2, the spring 706 is sleeved on the side surface of the sliding rod 705, the upper end of the spring 706 is fixedly connected to the inner surface of the shell 2, and the spring 706 is sleeved on the side surface of the sliding rod 705. The lower end of the spring 706 is fixedly connected to the upper surface of the limit plate 704, the right end of the opening and closing door 702 is fixedly connected to the first hinge, the opening and closing door 702 is movably connected to the lower surface of the moving box 703 through the first hinge, the inclined block 701 is fixedly connected to the right side surface of the moving box 703, the inclined surface of the inclined block 701 coincides with the inclined surface of the pushing block 605, the supporting block 707 is fixedly connected to the inner surface of the moving box 703, and when the pushing block 605 moves to the bottom of the inclined block 701, the opening and closing door 702 opens due to its own weight and the coal falls out.

[0025] When coal needs to be added, the cylinder 607 is started to drive the push block 605 to move, and the inclined surface on the inclined surface block 701 and the push block 605 moves to the bottom of the inclined surface block 701. The inclined surface block 701 moves upward, causing the moving box 703 to move upward. The moving box 703 moves upward, driving the support block 707 to move upward, thereby driving the opening and closing plate 507 to close the opening below the temporary storage box 504, and then the coal is added from the funnel 508 to the temporary storage box 504 for temporary storage.

[0026] When the temporary storage box 504 is filled with coal, the cylinder 607 is started to drive the pushing block 605 to retreat. At this time, the movable box 703 moves downward, driving the supporting block 707 to move downward, causing the opening and closing plate 507 to open, and the coal in the temporary storage box 504 falls into the movable box 703. Then, the cylinder 607 is started to push forward to drive the movable box 703 to move upward. The opening and closing door 702 opens due to its own gravity and the coal falls into the shell 2. The pushing block 605 continues to move to close the opening and closing door 702, and then pushes the coal to move to the ash leakage screen plate 601.

[0027] The adjusting device 5 includes a rotating handle 501, a bidirectional screw rod 502, a moving block 503, a temporary storage box 504, a fixed plate 505, a second hinge 506, an opening and closing plate 507 and a funnel 508. The temporary storage box 504 is fixedly connected to the inner surface of the shell 2, the lower end of the funnel 508 is fixedly connected to the upper surface of the temporary storage box 504, the funnel 508 is connected to the interior of the temporary storage box 504, the opening and closing plate 507 is movably connected to the lower surface of the temporary storage box 504 through the second hinge 506, the upper end of the moving box 703 is slidably connected to the lower surface of the temporary storage box 504, the second hinge 506 is fixedly connected It is connected to the lower surface of the temporary storage box 504, and two moving blocks 503 are provided and are slidably connected to the inner surfaces of the two ends of the temporary storage box 504, respectively. The fixed plate 505 is fixedly connected to the side surface of the moving block 503, and the bidirectional screw rod 502 is threadedly connected to the inner surface of the fixed plate 505. The bidirectional screw rod 502 is rotatably connected to the inner surface of the shell 2, and the rotating handle 501 is fixedly connected to the front end of the bidirectional screw rod 502. The surface of the bidirectional screw rod 502 is divided into two sections of threads, and the two sections of threads have different directions. When the bidirectional screw rod 502 rotates, it drives the two moving blocks 503 to move in different directions.

[0028] When the amount of coal needs to be adjusted, the handle 501 can be rotated to drive the bidirectional screw rod 502 to rotate. The bidirectional screw rod 502 is divided into two sections of threads with different thread directions. When the bidirectional screw rod 502 rotates, it drives the fixed plate 505 to move toward the middle of the bidirectional screw rod 502, thereby driving the moving block 503 to move toward the middle of the temporary storage box 504 to adjust the space inside the temporary storage box 504.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving coal-fired hot air stove, comprising a main body (1), characterized in that: The upper end of the main body (1) is fixedly connected to a heat exchange device (3), the inner side of the main body (1) is provided with a combustion chamber (11) and an ash chamber (12), the front surfaces of the combustion chamber (11) and the ash chamber (12) are slidably connected to movable doors (8), the inner surface of the combustion chamber (11) is provided with an ash leakage device (6), the inner surface of the ash chamber (12) at the left end is fixedly connected to an inclined panel (13), the right end of the main body (1) is fixedly connected to a shell (2), the inner surface of the shell (2) is provided with a limiting device (7), and the shell (2) is provided with an adjustment device (5) at the upper end of the limiting device (7), the front surface of the heat exchange device (3) is fixedly connected to a hot air pipe (10), the left surface of the heat exchange device (3) is fixedly connected to a blowing device (4), and the upper surface of the heat exchange device (3) is fixedly connected to a smoke exhaust pipe (9).

2. The energy-saving coal-fired hot air stove according to claim 1, characterized in that: The ash leakage device (6) comprises an ash leakage screen plate (601), a connecting block (602), a connecting rod (603), an eccentric wheel (604), a pushing block (605), a tooth plate (606) and a cylinder (607); the ash leakage screen plate (601) is slidably connected to the inner surface of the combustion chamber (11); the connecting block (602) is fixedly connected to the right side surface of the ash leakage screen plate (601); the inner surface of the connecting block (602) is fixedly connected to a first short rod; and the left end of the connecting rod (603) is movably connected to the inner surface of the connecting block (602) via the first short rod.

3. The energy-saving coal-fired hot air stove according to claim 2, characterized in that: The right end of the connecting rod (603) is fixedly connected to a second short rod, the connecting rod (603) is movably connected to the side surface of the eccentric wheel (604) near the edge through the second short rod, the eccentric wheel (604) is rotatably connected to the inner surface of the main body (1), the cylinder (607) is fixedly connected to the inner surface of the shell (2), the pushing block (605) is slidably connected to the inner surface of the shell (2), the right end of the pushing block (605) is fixedly connected to the output end of the cylinder (607), and the tooth plate (606) is fixedly connected to the lower surface of the pushing block (605).

4. The energy-saving coal-fired hot air stove according to claim 2, characterized in that: The limiting device (7) comprises an inclined block (701), an opening and closing door (702), a moving box (703), a limiting plate (704), a sliding rod (705), a spring (706) and a supporting block (707); the moving box (703) is slidably connected to the inner surface of the shell (2); the limiting plate (704) is fixedly connected to the side surface of the moving box (703); the sliding rod (705) is fixedly connected to the upper surface of the limiting plate (704); the sliding rod (705) is slidably connected to the inner surface of the shell (2); and the spring (706) is sleeved on the side surface of the sliding rod (705).

5. The energy-saving coal-fired hot air stove according to claim 4, characterized in that: The upper end of the spring (706) is fixedly connected to the inner surface of the shell (2), the lower end of the spring (706) is fixedly connected to the upper surface of the limit plate (704), the right end of the opening and closing door (702) is fixedly connected to a first hinge, the opening and closing door (702) is movably connected to the lower surface of the moving box (703) through the first hinge, the inclined surface block (701) is fixedly connected to the right side surface of the moving box (703), the inclined surface of the inclined surface block (701) is matched with the inclined surface of the pushing block (605), and the supporting block (707) is fixedly connected to the inner surface of the moving box (703).

6. The energy-saving coal-fired hot air stove according to claim 4, characterized in that: The adjusting device (5) comprises a rotating handle (501), a bidirectional screw rod (502), a moving block (503), a temporary storage box (504), a fixed plate (505), a second hinge (506), an opening and closing plate (507) and a funnel (508); the temporary storage box (504) is fixedly connected to the inner surface of the housing (2); the lower end of the funnel (508) is fixedly connected to the upper surface of the temporary storage box (504); the funnel (508) is connected to the interior of the temporary storage box (504); the opening and closing plate (507) is movably connected to the lower surface of the temporary storage box (504) through the second hinge (506); and the upper end of the moving box (703) is slidably connected to the lower surface of the temporary storage box (504).

7. The energy-saving coal-fired hot air stove according to claim 6, characterized in that: The second hinge (506) is fixedly connected to the lower surface of the temporary storage box (504), the moving block (503) is provided with two and is slidably connected to the inner surfaces of the two ends of the temporary storage box (504), the fixed plate (505) is fixedly connected to the side surface of the moving block (503), the bidirectional screw rod (502) is threadedly connected to the inner surface of the fixed plate (505), the bidirectional screw rod (502) is rotatably connected to the inner surface of the housing (2), and the rotating handle (501) is fixedly connected to the front end of the bidirectional screw rod (502).

Images