Solid electric heat storage type hot blast stove

Abstract

The utility model discloses a solid electric heat storage type hot-blast stove, and relates to the technical field of hot-blast stoves. The hot-blast stove comprises a hot-blast stove shell, a heat accumulator is fixedly connected to the inner wall of the bottom of the hot-blast stove shell, an air inlet and an air outlet are formed in the inner wall of the bottom of the hot-blast stove shell, the bottom end of the air inlet is communicated with a variable-frequency high-temperature fan, and the bottom end of the air outlet is communicated with an air mixing device. The side, close to the variable-frequency high-temperature draught fan, of the air mixing device communicates with a variable-frequency air mixing draught fan, and one side of the heat accumulator is fixedly connected with an electric control cabinet. The utility model relates to a variable-frequency high-temperature air heater, which consists of a heat accumulator, a heat insulation material, an internal heating core component, namely an electric heating wire component, an insulating ceramic tube, an air mixing device, a variable-frequency high-temperature air feeder and an air duct, the air mixing device consists of an air mixing chamber, a variable-frequency air mixing fan, an air inlet and a temperature sensor, and the variable-frequency air mixing fan provides power. And high-temperature air in the furnace and outdoor normal-temperature air are mixed and then conveyed out.

Description

Technical Field

[0001] The utility model belongs to the technical field of hot blast stoves, in particular to a solid electric heat storage type hot blast stove. Background Art

[0002] Hot blast furnace is a thermal power machine that began to be widely used in my country in the late 1970s. It has become a replacement product for electric heat sources and traditional steam power heat sources in many industries.

[0003] At present, most of the solid electric heat storage hot air furnaces produced on the market are controlled by variable frequency single fans, which are prone to hot air temperature fluctuations. This utility model patent provides a temperature-controlled and stable solid electric heat storage hot air furnace, which can be adjusted within the temperature range of 50°C to 200°C and can be widely used in coal mines, grain drying, and paint workshops. Utility Model Content

[0004] The purpose of the utility model is to provide a solid electric heat storage hot blast furnace, which solves the problem of unstable temperature fluctuation of hot blast furnace equipment in the prior art by cooperating with a variable frequency mixed air fan and a variable frequency high temperature fan.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a solid electric heat storage hot air stove, comprising a hot air stove shell, the bottom inner wall of the hot air stove shell is fixedly connected to a heat storage body, the bottom inner wall of the hot air stove shell is respectively provided with an air inlet and an air outlet, the bottom end of the air inlet is connected to a variable frequency high temperature fan, the bottom end of the air outlet is connected to a mixed air device, the side of the mixed air device close to the variable frequency high temperature fan is connected to a variable frequency mixed air fan, one side of the heat storage body is fixedly connected to an electric control cabinet, one side of the electric control cabinet is electrically connected to a plug, a plurality of brick holes are provided in a rectangular array on one side of the heat storage body, and electric heating wires are fixedly embedded in the plurality of brick holes, the bottoms of the plurality of brick holes are fixedly connected to a connecting plate, the top of the hot air stove shell and the bottom of the mixed air device are respectively fixedly embedded with a furnace body temperature sensor and a mixing chamber temperature sensor.

[0007] By adopting the above technical solution, air can enter the air inlet through the variable frequency high temperature fan, the air in the air inlet will be transported to the air outlet, and then the gas will be sent out through the variable frequency mixing fan and the air mixing device.

[0008] The present invention is further configured such that connecting pipes are fixedly connected to both sides of the hot blast furnace shell, and a plurality of rectangular holes are arranged in a transverse array at the bottom of the connecting pipes.

[0009] By adopting the above technical solution, electric wires can pass through the connecting tube to connect with the electrical device, and the electric wires passing through the connecting tube can extend from the multiple rectangular holes.

[0010] The utility model is further configured such that one side of the heat storage body is connected to an insulating ceramic tube, one side of the heat storage body is electrically connected to a heating wire assembly, and the heating wire assembly passes through the insulating ceramic tube and extends to the outside of the hot air furnace shell.

[0011] By adopting the above technical solution, the plug can be connected to the power supply to supply power to the electric control cabinet, heat storage body, furnace temperature sensor, mixing chamber temperature sensor, variable frequency high temperature fan, and variable frequency mixed air fan.

[0012] The utility model is further configured such that a sealing plug is sealed and inserted into the insulating ceramic tube, and the heating wire assembly sealably passes through the sealing plug.

[0013] By adopting the above technical solution, the heat storage body can be heated in the hot blast furnace shell, and then a high-temperature air circuit is formed in the hot blast furnace shell through the pressure of the variable frequency high-temperature fan.

[0014] The utility model is further configured such that the top and the bottom of the hot blast furnace shell are fixedly connected with L-shaped mounting plates, and a straight slot hole is opened through one side of the L-shaped mounting plate.

[0015] By adopting the above technical solution, screws can be inserted into the straight slot holes provided on the L-shaped mounting plate to mount the hot air furnace housing.

[0016] The utility model is further configured such that the plug is electrically connected to the heat storage body, the variable frequency high temperature fan, and the variable frequency mixed air fan, and a filter is connected to the side of the variable frequency mixed air fan away from the air mixing device.

[0017] By adopting the above technical solution, after the hot air is mixed with the normal temperature air through the air mixing device, it is powered by the variable frequency air mixing fan and sent to the application site, and the heat storage body is composed of refractory bricks.

[0018] The utility model is further configured such that a mixing chamber is provided in the air mixing device, the top inner wall of the mixing chamber is connected to the air outlet, and the inner wall on one side of the mixing chamber is connected to the variable frequency air mixing fan.

[0019] By adopting the above technical solution, brick holes are reserved along the direction of the air duct, and the heating wires are placed in the brick holes. The entire mixed air structure consists of a variable frequency high-temperature fan, an air inlet, a furnace temperature sensor, an air outlet, and an air mixing device, and is powered by the variable frequency mixed air fan.

[0020] The utility model is further configured such that the air inlet and the air outlet are connected, the furnace body temperature sensor is located directly above the heat storage body, the mixing chamber temperature sensor is located directly below the heat storage body, and the hot air furnace shell is made of insulating material.

[0021] By adopting the above technical solution, the high-temperature air in the hot air furnace shell is mixed with the outdoor normal-temperature air and then transported out. The air volume transported by the variable-frequency mixing fan can be adjusted by the electric control cabinet according to the temperature sensor value.

[0022] The utility model has the following beneficial effects:

[0023] 1. The utility model mixes hot air in the air mixing chamber, utilizes the normal temperature air outside the furnace body, accurately controls the air outlet temperature, increases the air supply distance, uses low-valley electricity to store thermal energy, reduces the use cost, and is also beneficial to the national power grid. It is installed at the bottom of the heat storage body, and the air outlet direction is downward. Under the pressure of the variable frequency high temperature blower, the high temperature air in the furnace body forms a loop. The hot air then passes through the air mixing device and is mixed with the normal temperature air. It is then powered by the variable frequency mixing air blower and sent to the application site.

[0024] 2. The utility model is composed of a heat storage body, thermal insulation materials, an internal heating core component, a heating wire assembly, an insulating ceramic tube, an air mixing device, a variable frequency high-temperature blower and an air duct. The air mixing device is composed of an air mixing chamber, a variable frequency mixing blower, an air inlet and a temperature sensor. It is powered by the variable frequency mixing blower to mix the high-temperature air in the furnace with the outdoor normal temperature air and then transport it out.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for describing the embodiments.

[0027] Figure 1 A three-dimensional schematic diagram of a solid electric thermal storage hot air stove from a first perspective;

[0028] Figure 2 A three-dimensional schematic diagram of a solid electric thermal storage hot air stove from a second perspective;

[0029] Figure 3 This is a disassembled three-dimensional schematic diagram of a solid electric thermal storage hot air stove;

[0030] Figure 4 It is a cross-sectional schematic diagram of a solid electric thermal storage hot blast stove;

[0031] Figure 5 This is a three-dimensional schematic diagram of the heat storage body in a solid electric heat storage hot air stove.

[0032] In the attached figure: 1. Heat storage body; 2. Hot air furnace shell; 3. Insulating ceramic tube; 4. Heating wire assembly; 5. Air mixing device; 6. Mixing chamber; 7. Mixing chamber temperature sensor; 8. Variable frequency mixing fan; 9. Variable frequency high temperature fan; 10. Air inlet; 11. Furnace temperature sensor; 12. Electric control cabinet; 13. Brick hole; 14. Heating wire; 15. Connecting plate; 16. Air outlet; 17. Filter; 18. L-shaped mounting plate; 19. Plug; 20. Sealing plug; 21. Connecting pipe; 22. Rectangular hole. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Specific embodiment 1

[0035] See also Figure 1-Figure 5 The utility model is a solid electric heat storage hot air stove, comprising a hot air stove shell 2, a heat storage body 1 is fixedly connected to the bottom inner wall of the hot air stove shell 2, an air inlet 10 and an air outlet 16 are respectively opened on the bottom inner wall of the hot air stove shell 2, the bottom end of the air inlet 10 is connected to a variable frequency high temperature fan 9, the bottom end of the air outlet 16 is connected to a mixed air device 5, the side of the mixed air device 5 close to the variable frequency high temperature fan 9 is connected to a variable frequency mixed air fan 8, one side of the heat storage body 1 is fixedly connected to an electric control cabinet 12, the electric control cabinet 1 2 is electrically connected to a plug 19, a plurality of brick holes 13 are provided in a rectangular array on one side of the heat storage body 1, and electric heating wires 14 are fixedly embedded in the plurality of brick holes 13, and a connecting plate 15 is fixedly connected to the bottom of the plurality of brick holes 13. The top of the hot blast stove shell 2 and the bottom of the air mixing device 5 are respectively fixedly embedded with a furnace body temperature sensor 11 and a mixing chamber temperature sensor 7. Both sides of the hot blast stove shell 2 are fixedly connected with a connecting pipe 21, and a plurality of rectangular holes 22 are provided in a horizontal array at the bottom of the connecting pipe 21.

[0036] Specifically: the plug 19 can be connected to the power supply to supply power to the electric control cabinet 12, the heat storage body 1, the furnace temperature sensor 11, the mixing chamber temperature sensor 7, the variable frequency high temperature fan 9, and the variable frequency mixed air fan 8. The connecting pipe 21 can pass through the wires to connect with the electrical components, and the wires passing through the connecting pipe 21 can extend from the multiple rectangular holes 22. Specific embodiment 2

[0038] See also Figure 1-Figure 5On the basis of the specific embodiment 1, one side of the heat storage body 1 is connected with an insulating ceramic tube 3, one side of the heat storage body 1 is electrically connected with a heating wire assembly 4, and the heating wire assembly 4 passes through the insulating ceramic tube 3 and extends to the outside of the hot air stove shell 2, a sealing plug 20 is sealed and inserted in the insulating ceramic tube 3, and the heating wire assembly 4 seals and passes through the sealing plug 20, the top and bottom of the hot air stove shell 2 are fixedly connected with an L-shaped mounting plate 18, and a straight slot is opened on one side of the L-shaped mounting plate 18, and the plug 19 is connected to the heat storage body 1 and the variable The variable frequency high temperature fan 9 and the variable frequency mixing air fan 8 are electrically connected. The variable frequency mixing air fan 8 is connected to a filter 17 on the side away from the mixing device 5. A mixing chamber 6 is provided in the mixing device 5. The top inner wall of the mixing chamber 6 is connected to the air outlet 16. The inner wall of one side of the mixing chamber 6 is connected to the variable frequency mixing air fan 8. The air inlet 10 is connected to the air outlet 16. The furnace body temperature sensor 11 is located directly above the heat storage body 1, and the mixing chamber temperature sensor 7 is located directly below the heat storage body 1. The hot air furnace shell 2 is made of insulating material.

[0039] Specifically: air can enter the air inlet 10 through the variable frequency high temperature fan 9, the air in the air inlet 10 will be transported to the air outlet 16, and then the gas will be sent out through the variable frequency mixing fan 8 and the air mixing device 5. The heat storage body 1 can be heated in the hot air stove shell 2, and then the pressure of the variable frequency high temperature fan 9 will form a high temperature air circuit in the hot air stove shell 2. When the hot air is mixed with the normal temperature air through the air mixing device 5, the variable frequency mixing fan 8 will provide power to send it to the application site.

[0040] The working principle of the present utility model is as follows: the plug 19 can be connected to the power supply to supply power to the electric control cabinet 12, the heat storage body 1, the furnace temperature sensor 11, the mixing chamber temperature sensor 7, the variable frequency high temperature fan 9, and the variable frequency mixing air fan 8; the connecting pipe 21 can pass through the wires to connect with the electrical components, and the wires passing through the connecting pipe 21 can extend from the multiple rectangular holes 22.

[0041] Air can enter the air inlet 10 through the variable frequency high temperature fan 9, and the air in the air inlet 10 will be transported to the air outlet 16, and then the gas will be sent out through the variable frequency mixing fan 8 and the air mixing device 5. The heat storage body 1 can be heated in the hot blast furnace shell 2, and then a high temperature air circuit is formed in the hot blast furnace shell 2 through the pressure of the variable frequency high temperature fan 9. When the hot air is mixed with the normal temperature air through the air mixing device 5, it is powered by the variable frequency mixing fan 8 and sent to the application site. The heat storage body 1 is composed of refractory bricks, and brick holes 13 are reserved along the direction of the air duct. The heating wire 14 is in the brick hole 13. The air mixing structure is composed of a variable frequency high temperature fan 9, an air inlet 10, a furnace body temperature sensor 11, an air outlet 16, and an air mixing device 5, and is powered by a variable frequency mixing air fan 8. The high temperature air in the hot blast furnace shell 2 is mixed with the outdoor normal temperature air and then transported out. The air volume transported by the variable frequency mixing air fan 8 can be adjusted by the electric control cabinet 12 according to the temperature sensor value. The mixing chamber temperature sensor 7 and the furnace body temperature sensor 11 can both detect the temperature conditions inside the hot blast furnace shell 2 and the mixing chamber 6. The straight slot holes on the L-shaped mounting plate 18 can be used to insert screws for installing the hot blast furnace shell 2.

[0042] The standard parts used in the present invention can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The control method is automatically controlled by a control unit. The control circuit of the control unit can be implemented by simple programming by technicians in this field, which is common knowledge in this field. Therefore, the control method and circuit connection are no longer explained in detail in the present invention.

[0043] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to only the specific implementation methods described. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can better understand and utilize the present invention.

Claims

1. A solid electric heat storage hot air stove, comprising a hot air stove housing (2), characterized in that: The bottom inner wall of the hot blast furnace shell (2) is fixedly connected to a heat storage body (1), and the bottom inner wall of the hot blast furnace shell (2) is respectively provided with an air inlet (10) and an air outlet (16), the bottom end of the air inlet (10) is connected to a variable frequency high temperature fan (9), the bottom end of the air outlet (16) is connected to an air mixing device (5), and the side of the air mixing device (5) close to the variable frequency high temperature fan (9) is connected to a variable frequency mixed air fan (8), and one side of the heat storage body (1) is fixedly connected to an electric control cabinet (12); One side of the electric control cabinet (12) is electrically connected to a plug (19); one side of the heat storage body (1) is provided with a plurality of brick holes (13) in a rectangular array, and electric heating wires (14) are fixedly embedded in the plurality of brick holes (13); the bottoms of the plurality of brick holes (13) are fixedly connected to a connecting plate (15); the top of the hot blast furnace housing (2) and the bottom of the air mixing device (5) are respectively fixedly embedded with a furnace body temperature sensor (11) and a mixing chamber temperature sensor (7).

2. The solid electric thermal storage hot air stove according to claim 1, characterized in that: Connecting pipes (21) are fixedly connected to both sides of the hot blast furnace shell (2), and a plurality of rectangular holes (22) are arranged in a transverse array at the bottom of the connecting pipe (21).

3. The solid electric thermal storage hot air stove according to claim 1, characterized in that: One side of the heat storage body (1) is connected to an insulating ceramic tube (3), and one side of the heat storage body (1) is electrically connected to a heating wire assembly (4), and the heating wire assembly (4) passes through the insulating ceramic tube (3) and extends to the outside of the hot air furnace shell (2).

4. The solid electric thermal storage hot air stove according to claim 3, characterized in that: A sealing plug (20) is sealed and inserted into the insulating ceramic tube (3), and the heating wire assembly (4) is sealed and penetrates the sealing plug (20).

5. The solid electric thermal storage hot air stove according to claim 1, characterized in that: The top and bottom of the hot blast furnace housing (2) are both fixedly connected with an L-shaped mounting plate (18), and a straight slot hole is provided through one side of the L-shaped mounting plate (18).

6. The solid electric thermal storage hot air stove according to claim 1, characterized in that: The plug (19) is electrically connected to the heat storage body (1), the variable frequency high temperature fan (9), and the variable frequency mixed air fan (8); the side of the variable frequency mixed air fan (8) away from the air mixing device (5) is connected to a filter (17).

7. The solid electric thermal storage hot air stove according to claim 1, characterized in that: A mixing chamber (6) is provided in the air mixing device (5), the top inner wall of the mixing chamber (6) is connected to the air outlet (16), and the inner wall on one side of the mixing chamber (6) is connected to the variable frequency air mixing fan (8).

8. The solid electric thermal storage hot air stove according to claim 1, characterized in that: The air inlet (10) and the air outlet (16) are connected, the furnace temperature sensor (11) is located directly above the heat storage body (1), the mixing chamber temperature sensor (7) is located directly below the heat storage body (1), and the hot air furnace shell (2) is made of insulating material.

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