Sealing and heat-insulating calcining device

Abstract

The utility model relates to the technical field of calcining furnaces, and discloses a sealed heat insulation calcining device. The sealing and heat-insulating calcining device comprises a supporting frame, an adapting pipe is fixedly installed above the supporting frame, a water inlet pipe is installed below the adapting pipe in a penetrating and inserting mode, an end cover is fixedly installed above the adapting pipe, a water outlet is fixedly installed above the end cover, a drill rod is installed at the bottom of the adapting pipe in an embedded mode, and a heat-insulating plate is arranged on the drill rod. When the calcining furnace works for a long time, the heat conduction layer can conduct heat absorbed by the heat insulation layer and the heat insulation plate to water in the space between the adapting pipe and the heat conduction layer through the heat pipe, and the heat of the heat insulation layer and the heat insulation plate is absorbed through the water; meanwhile, water in the adapting pipe is circulated through the water inlet pipe and the water outlet, so that the temperature of the adapting pipe is limited, the temperature of the outer wall of the calcining device can be reduced, and the scalding condition is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of calcining furnaces, in particular to a sealed heat-insulating calcining device. Background Art

[0002] Calcining furnace is a thermal equipment that heat treats carbon raw materials (such as coke, anthracite, etc.) at high temperature to improve the properties of raw materials. It is used for ironmaking, recycling rare metals, catalyst production, improving the environment, and producing special chemicals.

[0003] The existing referenceable Chinese utility model patent with announcement number CN217504349U discloses a heat insulation device for the outer surface of a calcining furnace, including a first heat insulation board; a second heat insulation board is detachably provided at both ends of the first heat insulation board, the cross-sections of the first heat insulation board and the second heat insulation board are both semi-arc-shaped, and the first heat insulation board and the second heat insulation board can form a ring after being assembled. The heat insulation device for the outer surface of a calcining furnace, through a fixed block, allows the first heat insulation board and the second heat insulation board to be sleeved on the surface of the calcining furnace, and then the first heat insulation board and the second heat insulation board are assembled, and then the fixed block contacts the surface of the calcining furnace, so that the insulation board is separated from the calcining furnace, and the insulation board is used to block heat, and then when a small amount of heat enters the interior of the first heat insulation board and the second heat insulation board, the heat can be dissipated through the second heat sink and the first heat sink in the heat dissipation cavity, so that the high temperature cannot spread to the outer arc surface of the first heat insulation board and the second heat insulation board, thereby improving the protection effect.

[0004] The existing calcining device insulation structure generally prevents heat conduction by wrapping the calcining device with materials with poor thermal conductivity. In this way, the insulation material will still absorb a certain amount of heat during long-term use, causing the temperature of the outer side of the insulation material to rise, which may scald the user. At the same time, the existing calcining device has poor sealing performance, and the internal heat can easily diffuse to the outside through the top of the calcining device to form heat loss. At the same time, the combustion-supporting gas injected into the calcining furnace at room temperature will cause the temperature inside the furnace to change. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a sealed heat-insulating calcining device, which has the advantages of preventing the heat insulation material from absorbing too much heat and reducing heat loss, thereby solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealed heat-insulating calcining device, comprising: a support frame, a receiving pipe is fixedly installed on the top of the support frame, a water inlet pipe is inserted and installed below the receiving pipe, an end cover is fixedly installed on the top of the receiving pipe, a drain port is fixedly installed on the top of the end cover, a heat insulation board is embedded and installed on the bottom of the receiving pipe, a fuel pipe is inserted and installed in the center of the heat insulation board, a heat insulation layer is fixedly installed on the top of the heat insulation board, a heat conductive layer is fixedly installed on the outside of the heat conductive layer, a heat pipe is fixedly installed on the outside of the heat conductive layer, a top cover is movably installed on the top of the receiving pipe, a smoke exhaust pipe is inserted and installed on the top of the top cover, an air intake pipe is inserted and installed in the center of the smoke exhaust pipe, an air pump is fixedly installed on the top of the air intake pipe, an air intake port is fixedly installed on the top of the air pump, a calcining furnace is movably installed below the top cover, a limiting frame is fixedly installed inside the calcining furnace, and a burner is embedded and installed below the calcining furnace; the fuel pipe can facilitate the fuel to enter the burner.

[0009] As a preferred technical solution of the utility model, the upper end of the water inlet pipe passes through the bottom of the receiving tube, the bottom of the receiving tube is embedded with the insulation board, and a fixed connection is formed between the receiving tube and the insulation board; the water inlet pipe can facilitate liquid to enter the cavity between the receiving tube and the heat conductive layer from the bottom.

[0010] As a preferred technical solution of the utility model, the interior of the end cover is embedded in the insulation layer, the end cover is embedded in the top of the inner wall of the receiving tube, and the drain port vertically passes through the end cover; the end cover can close the upper end of the receiving tube.

[0011] As a preferred technical solution of the utility model, the outer diameter of the insulation board is equal to the outer diameter of the insulation layer, the outer side of the insulation layer is fixedly connected to the heat-conducting layer, and the heat pipe is installed in a ring shape on the outer side of the heat-conducting layer with the center of the heat-conducting layer as a reference; the heat-conducting layer can conduct the heat absorbed by the insulation layer.

[0012] As the preferred technical solution of the utility model, the top cover is movably connected to the calcining furnace through a threaded structure, the upper end of the smoke exhaust pipe is a closed structure, and the outer side of the top end of the smoke exhaust pipe is provided with a smoke exhaust port distributed in a ring shape with the center of the smoke exhaust pipe as the reference; the smoke exhaust pipe can facilitate the discharge of smoke.

[0013] As a preferred technical solution of the utility model, the air intake pipe vertically penetrates the smoke exhaust pipe, and the air pump is connected to the calcining furnace through the air intake pipe; the air intake pipe can facilitate the air pump to transport air to the inside of the calcining furnace.

[0014] As a preferred technical solution of the utility model, the bottom end of the burner is connected to the fuel pipe, the calcining furnace is embedded in the interior of the insulation layer, and the calcining furnace and the insulation layer are fixedly connected; the calcining furnace can reduce heat loss.

[0015] Compared with the prior art, the utility model provides a sealed heat-insulating calcining device having the following

[0016] Beneficial effects:

[0017] 1. The utility model provides a heat-conducting layer, and the calcining furnace is wrapped by the heat-insulating layer and the heat-insulating board. After the temperature inside the calcining furnace rises, due to the poor thermal conductivity of the heat-insulating layer and the heat-insulating board, the heat-insulating layer and the heat-insulating board can concentrate the heat inside the calcining furnace. When the calcining furnace works for a long time, the heat-conducting layer can conduct the heat absorbed by the heat-insulating layer and the heat-insulating board to the water in the space between the receiving tube and the heat-conducting layer through the heat pipe, and the heat of the heat-insulating layer and the heat-insulating board is absorbed by the water. At the same time, the water inside the receiving tube is circulated through the water inlet pipe and the drain outlet, thereby limiting the temperature of the receiving tube. This method can reduce the temperature of the outer wall of the calcining device and avoid scalding.

[0018] 2. The utility model arranges a smoke exhaust pipe, and a smoke exhaust hole is arranged in a ring shape on the upper end of the smoke exhaust pipe with the center of the smoke exhaust pipe as a reference. The air inlet pipe passes through the closed structure at the top of the smoke exhaust pipe and extends to the inside of the calcining furnace. The high-temperature flue gas inside the calcining furnace cannot be discharged vertically upward, but will gather at the top of the smoke exhaust pipe, and then be discharged through the smoke exhaust holes on the outer vertical surface of the smoke exhaust pipe. This method can gather the smoke inside the smoke exhaust pipe and increase the gas temperature inside the air inlet pipe, thereby reducing the influence of external air on the temperature inside the furnace, avoiding fluctuations in the temperature inside the furnace under the influence of the combustion-supporting gas. At the same time, the smoke exhaust pipe can reduce the gas exchange rate between the inside and outside of the calcining furnace and reduce heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the installation structure of the receiving pipe and the end cover of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the toothed receiving pipe of the utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the calcining furnace of the utility model;

[0023] Among them: 1. Support frame; 11. Receiver pipe; 12. Water inlet pipe; 13. End cover; 14. Drain outlet; 15. Heat insulation board; 16. Fuel pipe; 17. Heat insulation layer; 18. Heat conductive layer; 19. Heat pipe; 2. Top cover; 21. Smoke exhaust pipe; 22. Air inlet pipe; 23. Air pump; 24. Air inlet; 25. Calcination furnace; 26. Limiting frame; 27. Burner. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" 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 an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figure 1 - Figure 4 In this embodiment, a sealed heat-insulating calcining device includes: a support frame 1, a receiving pipe 11 is fixedly installed on the top of the support frame 1, a water inlet pipe 12 is inserted and installed below the receiving pipe 11, an end cover 13 is fixedly installed on the top of the receiving pipe 11, a drain port 14 is fixedly installed on the top of the end cover 13, a drill pipe is embedded and installed with a heat insulation board 15 at the bottom of the receiving pipe 11, a fuel pipe 16 is inserted and installed at the center of the heat insulation board 15, a heat insulation layer 17 is fixedly installed on the top of the heat insulation board 15, a heat conductive layer 18 is fixedly installed on the outside of the heat conductive layer 17, and a heat pipe 19 is fixedly installed on the outside of the heat conductive layer 18.

[0028] The upper end of the water inlet pipe 12 passes through the bottom of the receiving pipe 11 . The bottom of the receiving pipe 11 is engaged with the heat insulation board 15 , and a fixed connection is formed between the receiving pipe 11 and the heat insulation board 15 .

[0029] The interior of the end cover 13 is engaged with the heat insulation layer 17 , and the end cover 13 is engaged with the top end of the inner wall of the receiving pipe 11 . The drain port 14 vertically penetrates the end cover 13 .

[0030] The outer diameter of the heat insulation board 15 is equal to the outer diameter of the heat insulation layer 17 , the outer side of the heat insulation layer 17 is fixedly connected to the heat conductive layer 18 , and the heat pipe 19 is installed in a ring shape on the outer side of the heat conductive layer 18 with the center of the heat conductive layer 18 as the reference.

[0031] Specifically, the support frame 1 can support the receiving tube 11, the receiving tube 11 can receive a certain amount of liquid for absorbing heat, the water inlet pipe 12 can facilitate the liquid to enter the cavity between the receiving tube 11 and the heat conducting layer 18 from the bottom, the end cover 13 can close the upper end of the receiving tube 11, the drain port 14 can facilitate the liquid to be discharged from the top of the receiving tube 11, the insulation board 15 and the insulation layer 17 are made of asbestos fiber material and can play a heat insulating role, the fuel pipe 16 can facilitate the fuel to enter the burner 27, the heat conducting layer 18 can conduct the heat absorbed by the insulation layer 17, and the heat pipe 19 can facilitate the heat to be conducted from the heat conducting layer 18 to the liquid.

[0032] A top cover 2 is movably installed above the receiving tube 11, a smoke exhaust pipe 21 is inserted and installed above the top cover 2, an air intake pipe 22 is inserted and installed at the center of the smoke exhaust pipe 21, an air pump 23 is fixedly installed above the air intake pipe 22, an air inlet 24 is fixedly installed above the air pump 23, a calcining furnace 25 is movably installed below the top cover 2, a limiting frame 26 is fixedly installed inside the calcining furnace 25, and a burner 27 is embedded and installed below the calcining furnace 25.

[0033] The top cover 2 is movably connected to the calcining furnace 25 through a threaded structure. The upper end of the smoke exhaust pipe 21 is a closed structure, and the outer side of the top end of the smoke exhaust pipe 21 is provided with a smoke exhaust port distributed in an annular manner with the center of the smoke exhaust pipe 21 as a reference.

[0034] The air inlet pipe 22 vertically penetrates the smoke exhaust pipe 21 , and the air pump 23 is connected to the calcining furnace 25 through the air inlet pipe 22 .

[0035] The bottom end of the burner 27 is connected to the fuel pipe 16 . The calcining furnace 25 is embedded and installed inside the heat insulation layer 17 , and the calcining furnace 25 and the heat insulation layer 17 are fixedly connected.

[0036] Specifically, the top cover 2 can close the upper end of the calcining furnace 25, the smoke exhaust pipe 21 can facilitate the exhaust of smoke, the air inlet pipe 22 can facilitate the air pump 23 to transport air to the inside of the calcining furnace 25, the air inlet 24 can facilitate the air to enter the inside of the air pump 23, the calcining furnace 25 can reduce heat loss, the limit frame 26 can limit the position of the crucible, and the burner 27 can increase the temperature inside the calcining furnace 25.

[0037] When in use, the calcining furnace 25 is wrapped by the heat insulating layer 17 and the heat insulating plate 15. After the temperature inside the calcining furnace 25 rises, due to the poor thermal conductivity of the heat insulating layer 17 and the heat insulating plate 15, the heat insulating layer 17 and the heat insulating plate 15 can concentrate the heat inside the calcining furnace 25. When the calcining furnace 25 works for a long time, the heat conductive layer 18 can transfer the heat absorbed by the heat insulating layer 17 and the heat insulating plate 15 to the water in the space between the receiving tube 11 and the heat conductive layer 18 through the heat pipe 19, and the water absorbs the heat of the heat insulating layer 17 and the heat insulating plate 15. At the same time, the water inside the receiving tube 11 is circulated through the water inlet pipe 12 and the drain port 14, thereby limiting the temperature of the receiving tube 11. This method can reduce the temperature of the outer wall of the calcining device to avoid burns. This situation occurs because the upper end of the smoke exhaust pipe 21 is provided with a smoke exhaust hole in a ring shape with the center of the smoke exhaust pipe 21 as a reference, and the air intake pipe 22 passes through the closed structure at the top of the smoke exhaust pipe 21 and extends to the inside of the calcining furnace 25. The high-temperature flue gas inside the calcining furnace 25 cannot be discharged vertically upward, but will gather at the top of the smoke exhaust pipe 21, and then be discharged through the smoke exhaust holes on the outer vertical surface of the smoke exhaust pipe 21. This method can gather the smoke inside the smoke exhaust pipe 21 and increase the gas temperature inside the air intake pipe 22 through the smoke inside the smoke exhaust pipe 21, thereby reducing the influence of external air on the temperature inside the furnace, avoiding fluctuations in the temperature inside the furnace under the influence of the combustion-supporting gas, and at the same time, the smoke exhaust pipe 21 can reduce the gas exchange rate between the inside and outside of the calcining furnace 25 to reduce heat loss.

[0038] 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. A sealed heat-insulating calcining device, characterized in that: include: A support frame (1), a receiving pipe (11) is fixedly installed on the upper part of the support frame (1), a water inlet pipe (12) is inserted and installed below the receiving pipe (11), an end cover (13) is fixedly installed on the upper part of the receiving pipe (11), a drain port (14) is fixedly installed on the upper part of the end cover (13), a heat insulation board (15) is embedded and installed at the bottom of the receiving pipe (11) for mounting a drill pipe, a fuel pipe (16) is inserted and installed at the center of the heat insulation board (15), a heat insulation layer (17) is fixedly installed on the upper part of the heat insulation board (15), a heat conductive layer (18) is fixedly installed on the outer side of the heat insulation layer (17), and the heat conductive layer A heat pipe (19) is fixedly installed on the outer side of (18), a top cover (2) is movably installed above the receiving tube (11), a smoke exhaust pipe (21) is inserted and installed above the top cover (2), an air intake pipe (22) is inserted and installed in the center of the smoke exhaust pipe (21), an air pump (23) is fixedly installed above the air intake pipe (22), an air inlet (24) is fixedly installed above the air pump (23), a calcining furnace (25) is movably installed below the top cover (2), a limiting frame (26) is fixedly installed inside the calcining furnace (25), and a burner (27) is embedded and installed below the calcining furnace (25).

2. A sealed heat-insulating calcining device according to claim 1, characterized in that: The upper end of the water inlet pipe (12) passes through the bottom of the receiving pipe (11), the bottom of the receiving pipe (11) is engaged with the heat insulation board (15), and a fixed connection is formed between the receiving pipe (11) and the heat insulation board (15).

3. A sealed heat-insulating calcining device according to claim 1, characterized in that: The interior of the end cover (13) is engaged with the heat insulation layer (17), the end cover (13) is engaged with the top of the inner wall of the receiving pipe (11), and the drainage port (14) vertically penetrates the end cover (13).

4. A sealed heat-insulating calcining device according to claim 1, characterized in that: The outer diameter of the heat insulation board (15) is equal to the outer diameter of the heat insulation layer (17); the outer side of the heat insulation layer (17) is fixedly connected to the heat conductive layer (18); and the heat pipe (19) is installed in a ring shape on the outer side of the heat conductive layer (18) with the center of the heat conductive layer (18) as a reference.

5. A sealed heat-insulating calcining device according to claim 1, characterized in that: The top cover (2) is movably connected to the calcining furnace (25) via a threaded structure, the upper end of the smoke exhaust pipe (21) is a closed structure, and smoke exhaust ports are arranged on the outer side of the top end of the smoke exhaust pipe (21) in an annular distribution with the center of the smoke exhaust pipe (21) as a reference.

6. A sealed heat-insulating calcining device according to claim 1, characterized in that: The air inlet pipe (22) vertically penetrates the smoke exhaust pipe (21), and the air pump (23) is connected to the calcining furnace (25) through the air inlet pipe (22).

7. A sealed heat-insulating calcining device according to claim 2, characterized in that: The bottom end of the burner (27) is connected to the fuel pipe (16), and the calcining furnace (25) is embedded in the interior of the heat insulation layer (17), and the calcining furnace (25) and the heat insulation layer (17) are fixedly connected.

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