Rotary melting furnace for producing dried sand from waste thermal insulation materials

Abstract

The utility model discloses a rotary melting furnace for producing dried sand from waste heat preservation materials, which comprises a fixed furnace cover structure, a rotary furnace body structure, a driving mechanism and a supporting base, and the fixed furnace cover structure comprises an inner cover, an outer cover, a furnace cover heat insulation layer and a feeding chute; one side of the outer cover is provided with a flaming port, and the flaming port is connected with a gas burner; the rotary furnace body structure comprises a furnace body inner shell and a furnace body outer shell, a refractory brick melting chamber is formed in a cavity of the furnace body inner shell, and material guide spirals are arranged in the refractory brick melting chamber at intervals; a furnace body rolling ring in transmission connection with a driving mechanism is arranged on the furnace body shell, and the driving mechanism is installed on the supporting base. According to the utility model, in the melting furnace, the crushed powder of the waste thermal insulation material passes through high-temperature flame and high-temperature radiation in the hearth, fine thermal insulation material fibers form molten crystal particles, and the crystal particles can be used as drying sand after being cooled and crushed, so that the problem that mineral wool materials such as rock wool, glass wool, aluminum silicate wool and the like are difficult to reutilize is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to a rotary sintering furnace for producing drying sand from waste thermal insulation materials. Background Art

[0002] Rock wool, glass wool, and aluminum silicate wool are all mineral wool. They are all fiber materials generated by centrifuging raw materials at high temperatures and then centrifuged at high speed. They are widely used in the insulation industry. The production of mineral wool and the elimination of insulation equipment will generate a large amount of waste insulation materials. If these waste materials are directly discarded, they will easily cause great damage to the environment and even directly endanger human health. If waste insulation materials are put back into production, not only will a large amount of fuel be consumed, but the production process will also produce a large amount of harmful gases and dust. The overall cost is higher than the output input. Therefore, how to use waste insulation materials is an issue that needs to be considered urgently.

[0003] River sand is a high-quality building material that can be used to produce various dry powder slurries. Excessive exploitation of river sand can easily damage the river ecology and bring hidden dangers to flood control and waterway transportation. Mineral wool such as rock wool, glass wool, and aluminum silicate wool are similar to river sand in physical composition, and there is also a high elimination rate in the construction industry, which provides operational possibilities for rock wool to replace river sand and machine-made sand. Utility Model Content

[0004] The utility model aims to provide a rotary sintering furnace for producing drying sand from waste thermal insulation materials. In the sintering furnace, the crushed powdered waste thermal insulation materials are subjected to high-temperature flames and high-temperature radiation in the furnace, and the fine thermal insulation material fibers are formed into crystalline particles in a molten state, which can be used as drying sand after cooling and crushing, thereby solving the problem that mineral wool materials such as rock wool, glass wool, and aluminum silicate wool are difficult to reuse.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotary smelting furnace for producing drying sand from waste thermal insulation materials, comprising a fixed furnace cover structure, a rotary furnace body structure, a driving mechanism and a supporting base, wherein the fixed furnace cover structure comprises an inner cover, an outer cover, a furnace cover insulation layer and a feeding chute; one end of the feeding chute is obliquely connected to the inner cover and the outer cover, and the other end is connected to the feeding funnel, and a spiral feeder is provided below the feeding funnel; a furnace cover support is provided below the outer cover, a flame nozzle is provided on one side of the outer cover, and a gas burner is connected to the flame nozzle; the inner cover is rotatably connected to the rotary furnace body structure, and the rotary furnace body structure comprises a furnace body inner shell and a furnace body outer shell, a refractory brick smelting chamber is formed in the cavity of the furnace body inner shell, one end of the refractory brick smelting chamber is connected to the flame nozzle and the feeding chute, and the other end is set as a discharge port, and a material guide spiral is provided in the refractory brick smelting chamber at intervals; a furnace body roller connected to the driving mechanism is provided on the furnace body outer shell, and the driving mechanism is installed on the supporting base.

[0006] Preferably, the driving mechanism includes a driving wheel, a driving shaft, a motor reducer, a reducer sprocket, a driving chain, a driving shaft sprocket and a driven wheel; the reducer sprocket is installed on the motor reducer, the reducer sprocket is connected to the driving shaft sprocket through the driving chain, the driving shaft sprocket is sleeved on the driving shaft, driving wheels are installed at both ends of the driving shaft, and a driven wheel is matched on the other side of the driving wheel, and both the driven wheel and the driving wheel are connected to the furnace body roller on the furnace body shell through tread friction.

[0007] Preferably, the furnace cover insulation layer is filled between the inner cover and the outer cover.

[0008] Preferably, a furnace body heat insulation layer is filled between the furnace body inner shell and the furnace body outer shell.

[0009] Preferably, the feed hopper is used to fill powdered materials.

[0010] Preferably, the refractory brick melting chamber is a cylindrical inner cavity structure.

[0011] Preferably, the bottom of the support base and the furnace cover support are located on the same horizontal plane.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The rotary sintering furnace for producing drying sand from waste thermal insulation materials adopts a drum rotation form to solve the problem that powdered materials cannot be heated evenly and the problem that crystal particles are easy to slag. When rolling, the crystal particles can flow from the feed end to the discharge end along the material guide spiral. In the sintering furnace, the crushed powdered waste thermal insulation materials are subjected to high-temperature flames and high-temperature radiation in the furnace, and the fine thermal insulation material fibers form crystalline particles in a molten state, which can be used as drying sand after cooling and crushing, solving the problem that mineral wool materials such as rock wool, glass wool, and aluminum silicate wool are difficult to reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the rotary furnace structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the fixed furnace cover structure of the utility model;

[0017] Figure 4 This is a front view of the installation of the drive mechanism and the support base of the utility model;

[0018] Figure 5 This is a top view of the installation of the drive mechanism and the support base of the utility model;

[0019] Figure 6It is a schematic diagram of the structure of refractory brick melting and firing chambers of different shapes of the utility model.

[0020] In the figure: 1. Fixed furnace cover structure; 101. Inner cover; 102. Outer cover; 103. Insulation layer of furnace cover; 104. Feed chute; 105. Feed hopper; 106. Screw feeder; 107. Furnace cover support; 108. Flame nozzle; 109. Gas burner; 2. Rotating furnace body structure; 201. Inner shell of furnace body; 202. Outer shell of furnace body; 203. Insulation layer of furnace body; 204. Refractory brick melting chamber; 205. Discharge port; 206. Material guide screw; 207. Furnace body rolling ring; 3. Driving mechanism; 301. Driving wheel; 302. Driving shaft; 303. Motor reducer; 304. Reducer sprocket; 305. Driving chain; 306. Driving shaft sprocket; 307. Driven wheel; 4. Support base. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 In this embodiment, a rotary sintering furnace for producing drying sand from waste insulation materials comprises a fixed furnace cover structure 1, a rotating furnace body structure 2, a driving mechanism 3 and a supporting base 4, wherein the fixed furnace cover structure 1 comprises an inner cover 101, an outer cover 102, a furnace cover insulation layer 103 and a feed chute 104; one end of the feed chute 104 is obliquely connected to the inner cover 101 and the outer cover 102, and the other end is connected to a feed hopper 105, and a spiral feeder 106 is provided below the feed hopper 105; a furnace cover support 107 is provided below the outer cover 102, a flame vent 108 is provided on one side of the outer cover 102, and a gas burner 109 is connected to the flame vent 108; The inner cover 101 is rotatably connected to the rotating furnace body structure 2, and the rotating furnace body structure 2 includes a furnace body inner shell 201 and a furnace body outer shell 202. A refractory brick melting chamber 204 is formed in the cavity of the furnace body inner shell 201. One end of the refractory brick melting chamber 204 is connected to the flame nozzle 108 and the feed chute 104, and the other end is set as a discharge port 205. A material guide spiral 206 is arranged at intervals in the refractory brick melting chamber 204; a furnace body roller 207 which is transmission-connected to the drive mechanism 3 is provided on the furnace body outer shell 202, and the drive mechanism 3 is installed on the support base 4. The support base 4 and the bottom of the furnace cover support 107 are located on the same horizontal plane to keep the entire melting furnace in a stable state.

[0023] Among them, the driving mechanism 3 includes a driving wheel 301, a driving shaft 302, a motor reducer 303, a reducer sprocket 304, a driving chain 305, a driving shaft sprocket 306 and a driven wheel 307; the reducer sprocket 304 is installed on the motor reducer 303, the reducer sprocket 304 is connected to the driving shaft sprocket 306 through the driving chain 305, the driving shaft sprocket 306 is sleeved on the driving shaft 302, the driving wheels 301 are installed at both ends of the driving shaft 302, and the driven wheel 307 is matched on the other side of the driving wheel 301, and the driven wheel 307 and the driving wheel 301 are both connected to the furnace body roller 207 on the furnace body shell 202 through tread friction.

[0024] The refractory brick melting chamber 204 in this embodiment is a cylindrical inner cavity structure. Figure 6 shown.

[0025] In this embodiment, the furnace cover insulation layer 103 is filled between the inner cover 101 and the outer cover 102; the furnace body insulation layer 203 is filled between the furnace body inner shell 201 and the furnace body outer shell 202, the furnace cover insulation layer 103 and the furnace body insulation layer 203 are both filled with aluminum silicate material, and the material guide spiral 206 can be made of ceramic, refractory bricks, and ferrosilicon alloy; the feed chute 104 is ordinary carbon structural steel, the flame nozzle 108 is ordinary carbon structural steel, the inner cover 101 is ordinary carbon structural steel, the outer cover 102 is ordinary carbon structural steel, the furnace cover support 107 is ordinary carbon structural steel profile, which can specifically be channel steel, angle steel, steel pipe, etc., the refractory brick melting chamber 204 is refractory bricks built with refractory mud, the furnace body shell 201 is ordinary carbon structural steel, the furnace body outer shell 202 is ordinary carbon structural steel, and the furnace body rolling ring 207 is a wear-resistant steel plate.

[0026] Working principle: The feed hopper 105 of the utility model is used to fill powdered materials. The crushed powdered waste insulation materials are uniformly fed into the feed chute 104 on the furnace cover through the feed hopper 105 and the spiral feeder 106, and then fall into the rotating refractory brick melting chamber 204 from the feed chute 104. The high-temperature flame enters the refractory brick melting chamber 204 through the flame nozzle 108 and meets the powdered materials sliding down the feed chute 104. The powdered materials are burned into molten crystal particles in the refractory brick melting chamber 204 and turn over with the rotation of the furnace body. Under the high-temperature flame (12 00-1800 degrees Celsius) is fully formed under continuous burning to form a certain size of material pile which follows the material guide screw 206 to continuously flow to the discharge port 205. Finally, the crystal particles removed from the rotating furnace body can be used as drying sand. The entire rotating furnace body is provided with a rotational driving force by the driving mechanism 3. The motor reducer 303 transmits the rotational driving force to the rotating furnace body through the reducer sprocket 304, the driving chain 305, the driving shaft sprocket 306, the driving shaft 302, and the driving wheel 301 in turn, and the two driving wheels 301 and the two driven wheels 307 provide support for the rotating furnace body.

[0027] To sum up: the rotary smelting furnace for producing drying sand from waste thermal insulation materials of the utility model adopts a drum rotation form to solve the problem that powdered materials cannot be heated evenly and the problem that crystal particles are easy to slag. When rolling, the crystal particles can flow from the feed end to the discharge end along the guide screw 206. In the smelting furnace, the crushed powdered waste thermal insulation materials pass through the high-temperature flame and the high-temperature radiation in the furnace, and the fine thermal insulation material fibers form crystalline particles in a molten state, which can be used as drying sand after cooling and crushing, solving the problem that mineral wool materials such as rock wool, glass wool, and aluminum silicate wool are difficult to reuse.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[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. A rotary sintering furnace for producing dried sand from waste thermal insulation materials, comprising a fixed furnace cover structure (1), a rotary furnace body structure (2), a driving mechanism (3) and a supporting base (4), characterized in that: The fixed furnace cover structure (1) comprises an inner cover (101), an outer cover (102), a furnace cover heat insulation layer (103) and a feed chute (104); one end of the feed chute (104) is obliquely connected to the inner cover (101) and the outer cover (102), and the other end is connected to a feed hopper (105), and a screw feeder (106) is provided below the feed hopper (105); a furnace cover support (107) is provided below the outer cover (102), a flame vent (108) is provided on one side of the outer cover (102), and a gas burner (109) is connected to the flame vent (108); the inner cover (101) is rotated The rotary furnace structure (2) is dynamically connected to the rotary furnace structure (2), the rotary furnace structure (2) comprising a furnace inner shell (201) and a furnace outer shell (202), a refractory brick melting chamber (204) is formed in the cavity of the furnace inner shell (201), one end of the refractory brick melting chamber (204) is connected to the flame-spraying port (108) and the feed chute (104), and the other end is set as a discharge port (205), and a material guide spiral (206) is arranged in the refractory brick melting chamber (204); the furnace outer shell (202) is provided with a furnace rolling ring (207) which is transmission-connected to the driving mechanism (3), and the driving mechanism (3) is installed on the supporting base (4).

2. The rotary sintering furnace for producing dried sand from waste thermal insulation materials according to claim 1, characterized in that: The driving mechanism (3) comprises a driving wheel (301), a driving shaft (302), a motor reducer (303), a reducer sprocket (304), a driving chain (305), a driving shaft sprocket (306) and a driven wheel (307); the motor reducer (303) is provided with a reducer sprocket (304); the reducer sprocket (304) is connected to the driving shaft sprocket (306) through the driving chain (305); the driving shaft sprocket (306) is sleeved on the driving shaft (302); driving wheels (301) are provided at both ends of the driving shaft (302); a driven wheel (307) is provided on the other side of the driving wheel (301); the driven wheel (307) and the driving wheel (301) are both connected to a furnace body roller (207) on the furnace body shell (202) through tread friction.

3. The rotary sintering furnace for producing dried sand from waste thermal insulation materials according to claim 2, characterized in that: The furnace cover heat insulation layer (103) is filled between the inner cover (101) and the outer cover (102).

4. The rotary sintering furnace for producing dried sand from waste thermal insulation materials according to claim 1, characterized in that: A furnace heat insulation layer (203) is filled between the furnace inner shell (201) and the furnace outer shell (202).

5. The rotary sintering furnace for producing dried sand from waste thermal insulation materials according to claim 1, characterized in that: The feeding funnel (105) is used to fill powdery materials.

6. The rotary sintering furnace for producing dried sand from waste thermal insulation materials according to claim 1, characterized in that: The refractory brick melting chamber (204) is a cylindrical inner cavity structure.

7. The rotary sintering furnace for producing dried sand from waste thermal insulation materials according to claim 1, characterized in that: The bottoms of the support base (4) and the furnace cover support (107) are located on the same horizontal plane.

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