A pre-combustion furnace for hazardous waste treatment

Abstract

The utility model discloses a kind of precombustion furnaces for hazardous waste treatment belongs to hazardous waste precombustion field, including furnace body, the top of furnace body is provided with discharging assembly, the top of discharging assembly is provided with crushing assembly, the crushing assembly is used to break up and scatter hazardous waste material, heat exchange component is arranged between crushing assembly and discharging assembly, and discharging assembly includes feeding box fixedly installed on furnace body;The precombustion furnace for hazardous waste treatment can drive one of the runner to rotate by the rotation of feeding roller, and then cooperate with track, drive another runner to rotate, so that main crushing shaft rotates, gear is matched at this time, drive secondary crushing shaft to rotate reversely, and a plurality of misaligned arrangement crushing blades rotate reversely between them, so that hazardous waste material is scattered and crushed, can realize the synchronism of feeding and scattering operation, while hazardous waste material is scattered and crushed, can guarantee that hazardous waste material can be heated better subsequently.

Description

Technical Field

[0001] This utility model belongs to the field of hazardous waste pre-combustion technology, specifically relating to a pre-combustion furnace for hazardous waste treatment. Background Technology

[0002] The hazardous waste pre-combustion furnace is a key front-end device in the hazardous waste incineration system. It preheats, dries, and performs preliminary pyrolysis / oxidation on hazardous waste at high temperatures to remove moisture and volatile components, reduce the load on the main combustion furnace, improve combustion efficiency, and reduce pollutant generation, thereby providing pretreatment guarantees for the complete incineration of hazardous waste.

[0003] According to the patent announcement number CN222849781U, a pre-combustion furnace for hazardous waste treatment is known prior art. Although this patent has the advantages of avoiding material blockage and reducing equipment damage or even fire, the technical solution of this patent still has the following defects in actual use: In actual use, it is difficult to crush and disperse the waste material at the same time as feeding. As a result, the large volume of waste material is difficult to be heated better in the subsequent preheating and the heat is difficult to reuse. Utility Model Content

[0004] The purpose of this invention is to provide a pre-combustion furnace for hazardous waste treatment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pre-combustion furnace for hazardous waste treatment, comprising a furnace body, a feeding assembly at the top of the furnace body, a crushing assembly at the top of the feeding assembly, the crushing assembly being used to crush and disperse hazardous waste materials, and a heat exchange assembly being provided between the crushing assembly and the feeding assembly.

[0006] In a preferred embodiment, the feeding assembly includes a feeding box fixedly installed on the furnace body, a feeding roller rotatably connected to the inner side of the feeding box, a feeding auger fixedly installed on the surface of the feeding roller, and a through hole communicating with the furnace body at the bottom of the feeding roller.

[0007] In a preferred embodiment, the crushing assembly includes a crushing box fixedly installed on the top of the feeding box. A main crushing shaft and a secondary crushing shaft are arranged inside the crushing box. Crushing blades are fixedly installed on the surfaces of both the main crushing shaft and the secondary crushing shaft. Meshing gears are fixedly installed on the surface of the main crushing shaft and one end of the secondary crushing shaft. A rotating wheel is fixedly installed at one end of the main crushing shaft and one end of the feeding roller. Tracks overlap on the surfaces of the two rotating wheels.

[0008] In a preferred embodiment, the heat exchange assembly includes a gas supply pipe fixedly installed on one side of the pulverizing chamber and communicating with the inside of the pulverizing chamber, and an exhaust pipe fixedly installed on one side of the furnace body and communicating with the inside of the furnace body. Both the gas supply pipe and the exhaust pipe have threaded sleeves at their ends, and a connecting pipe is fixedly connected between the two threaded sleeves.

[0009] In a preferred embodiment, a control valve is fixedly installed on the outside of the gas supply pipe, and a filter plate is fixedly installed inside the connecting pipe.

[0010] In a preferred embodiment, an air inlet pipe is fixedly connected to the middle of the bottom of the furnace body, a support leg is fixedly installed at the bottom of the furnace body, a support base is fixedly installed at the bottom of the support leg, a movable door is movably installed on the front of the furnace body via a hinge, and a load-bearing mesh plate is fixedly connected to the bottom of the inner cavity of the furnace body.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The pre-combustion furnace used for hazardous waste treatment drives one of the rotating wheels to rotate through the rotation of the feeding roller. In conjunction with the crawler, it drives the other rotating wheel to rotate, causing the main crushing shaft to rotate. At this time, the gear drives the secondary crushing shaft to rotate in the opposite direction, and the crushing blades arranged in a staggered manner rotate in opposite directions. This process of crushing and dispersing hazardous waste material can achieve the synchronization of feeding and dispersing operations. At the same time, crushing and dispersing hazardous waste material can ensure that the hazardous waste material can be better heated in the subsequent process. The pre-combustion furnace for hazardous waste treatment, by setting up heat exchange components, can facilitate the transfer of hot air gathered inside the furnace to the inside of the crushing box during the pre-combustion treatment of hazardous waste materials. This allows for the pre-drying of hazardous waste materials, thereby realizing the reuse of heat. The pre-combustion furnace for hazardous waste treatment rotates by rotating the feeding roller, which drives the feeding auger to rotate as well. The rotation of the feeding auger can gradually and controllably push the waste inside the feeding box towards the through hole. When the hazardous waste moves to the discharge position, it falls smoothly into the furnace body with the help of gravity. Attached Figure Description

[0012] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a front cross-sectional view of the structure of this utility model; Figure 3 This is an enlarged schematic diagram of the feeding component in the structure of this utility model; Figure 4 This is an enlarged schematic diagram of the crushing component in the structure of this utility model; Figure 5 This is an enlarged schematic diagram of the heat exchange component in the structure of this utility model.

[0013] In the diagram: 1. Furnace body; 2. Support leg; 3. Support base; 4. Feeding assembly; 401. Feeding box; 402. Through hole; 403. Feeding roller; 404. Feeding auger; 5. Crushing assembly; 501. Rotary wheel; 502. Track; 503. Main crushing shaft; 504. Gear; 505. Secondary crushing shaft; 506. Crushing box; 507. Crushing blades; 6. Heat exchange assembly; 601. Filter plate; 602. Gas supply pipe; 603. Exhaust pipe; 604. Control valve; 605. Connecting pipe; 606. Threaded sleeve; 7. Air inlet pipe; 8. Movable door; 9. Bearing mesh plate. Detailed Implementation

[0014] The present invention will be further described below with reference to the embodiments.

[0015] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0016] Please see Figure 1 and Figure 2 This utility model provides a pre-combustion furnace for hazardous waste treatment, including a furnace body 1, an air inlet pipe 7 fixedly connected to the middle of the bottom end of the furnace body 1, a support leg 2 fixedly installed at the bottom of the furnace body 1, a support base 3 fixedly installed at the bottom of the support leg 2, a movable door 8 movably installed on the front of the furnace body 1 through a hinge, and a bearing mesh plate 9 fixedly connected to the bottom of the inner cavity of the furnace body 1. In this embodiment, the support leg 2 and the support base 3 can stably place the pre-combustion furnace structure. The air inlet pipe 7 is used to connect to the existing external heating equipment to facilitate the delivery of external hot air to the interior of the furnace body 1. The bearing mesh plate 9 is used to pile up the pulverized hazardous waste inside the furnace body 1. The movable door 8 can be used to open and ignite the hazardous waste on the bearing mesh plate 9 for pre-combustion, and can also be used to remove the hazardous waste from the interior of the furnace body 1 after pre-combustion. When the hazardous waste is pre-combusting inside the furnace body 1, the air inlet pipe 7 can be separated from the existing external heating equipment so that the air inlet pipe 7 can deliver air into the interior of the furnace body 1 to help the hazardous waste burn. Please see Figures 1-3 The top of the furnace body 1 is provided with a feeding assembly 4. The feeding assembly 4 includes a feeding box 401 fixedly installed on the furnace body 1. A feeding roller 403 is rotatably connected to the inner side of the feeding box 401. A feeding auger 404 is fixedly installed on the surface of the feeding roller 403. The feeding roller 403 and the feeding auger 404 can feed waste materials. A through hole 402 communicating with the furnace body 1 is opened at the bottom of the feeding roller 403. In the above scheme, it should be noted that the entire feeding assembly 4 is made of heat-resistant material, and one end of the feeding roller 403 is fixedly installed to the output shaft of the external drive motor through a coupling. In this embodiment, when the broken and scattered hazardous waste enters the interior of the feeding box 401, the external drive motor will drive the feeding roller 403 to rotate, and the feeding roller 403 will drive the feeding auger 404 to rotate as well. The rotation of the feeding auger 404 can gradually and controllably push the hazardous waste inside the feeding box 401 toward the through hole 402. When the waste moves to the position of the through hole 402, it will fall into the interior of the furnace body 1 by the weight of the hazardous waste itself and accumulate on the supporting mesh plate 9.

[0017] Please see Figure 1 , Figure 2 and Figure 4 The top of the feeding assembly 4 is equipped with a crushing assembly 5, which is used to crush hazardous waste materials. The crushing assembly 5 includes a crushing box 506 fixedly installed on the top of the feeding box 401. The crushing box 506 is equipped with a main crushing shaft 503 and a secondary crushing shaft 505. Crushing blades 507 are fixedly installed on the surfaces of the main crushing shaft 503 and the secondary crushing shaft 505. The main crushing shaft 503 and the secondary crushing shaft 505 are symmetrically arranged. There are several crushing blades 507, which are staggered among each other. Gears 504 that mesh with each other are fixedly installed on the surface of the main crushing shaft 503 and one end of the secondary crushing shaft 505. A rotating wheel 501 is fixedly installed on one end of the main crushing shaft 503 and one end of the feeding roller 403. Tracks 502 are overlapped on the surfaces of the two rotating wheels 501.

[0018] In this embodiment, when the feeding roller 403 rotates, it can drive one of the rotating wheels 501 to rotate, and in conjunction with the track 502, drive the other rotating wheel 501 to rotate. The other rotating wheel 501 drives the main crushing shaft 503 to rotate. At this time, in conjunction with the gear 504, it drives the secondary crushing shaft 505 to rotate in the opposite direction. In this way, the several staggered crushing blades 507 rotate in opposite directions, which can break down and crush the hazardous waste material.

[0019] Please see Figure 1 , Figure 2 and Figure 5 A heat exchange component 6 is provided between the crushing component 5 and the feeding component 4. The heat exchange component 6 includes a gas supply pipe 602 fixedly installed on one side of the crushing box 506 and communicating with the inside of the crushing box 506, and an exhaust pipe 603 fixedly installed on one side of the furnace body 1 and communicating with the inside of the furnace body 1. The ports of the gas supply pipe 602 and the exhaust pipe 603 are threaded with threaded sleeves 606. A connecting pipe 605 is fixedly connected between the two threaded sleeves 606. A control valve 604 is fixedly installed on the outside of the gas supply pipe 602, and a filter plate 601 is fixedly installed inside the connecting pipe 605. In the above scheme, it should be noted that: the gas supply pipe 602 is made of high-temperature resistant flexible hose material, the exhaust pipe 603, threaded sleeve 606, connecting pipe 605 and control valve 604 are all made of high-temperature resistant material, and the filter plate 601 is made of high-temperature resistant activated carbon material. When the filter plate 601 becomes blocked, the two threaded sleeves 606 can be rotated to separate them from the gas supply pipe 602 and the exhaust pipe 603 respectively. In this way, the threaded sleeve 606, the connecting pipe 605 and the filter plate 601 can be disassembled and replaced as a whole.

[0020] In this embodiment, when high-temperature hot air is input into the furnace body 1 through the air inlet pipe 7 to dry the hazardous waste material on the supporting mesh plate 9, the control valve 604 is opened, so that the hot air gathered at the top of the inner cavity of the furnace body 1 can flow out from the exhaust pipe 603 and pass through the filter plate 601 in the connecting pipe 605. This can adsorb and filter the odor and small particulate impurities in the hot air, and the filtered hot air will flow into the interior of the crushing box 506 through the air supply pipe 602. In this way, the hazardous waste material in the crushing box 506 can be pre-dried by the hot air.

[0021] The working principle and usage process of this utility model are as follows: First, start the external drive motor to make the feeding roller 403 rotate. The feeding roller 403 can drive one of the rotating wheels 501 to rotate, and in conjunction with the track 502, drive the other rotating wheel 501 to rotate. The other rotating wheel 501 drives the main crushing shaft 503 to rotate. At this time, in conjunction with the gear 504, the secondary crushing shaft 505 is driven to rotate in the opposite direction. In this way, the crushing blades 507 arranged in a staggered manner rotate in opposite directions. Next, the hazardous waste material is poured into the crushing box 506. At this time, the crushing blades 507 can crush and disperse the hazardous waste material, and the crushed hazardous waste material will enter the feeding box 401. At this time, the feeding roller 403 will drive the feeding auger 404 to rotate. The rotation of the feeding auger 404 can gradually and controllably push the hazardous waste material inside the feeding box 401 towards the through hole 402. When the hazardous waste material moves to the position of the through hole 402, it will fall into the furnace body 1 by the weight of the hazardous waste material itself and accumulate on the bearing mesh plate 9. Next, when it is necessary to heat and dry the hazardous waste material on the supporting mesh plate 9, the air inlet pipe 7 is connected to the existing external heating equipment. This allows the external hot air to be delivered to the interior of the furnace body 1, thereby drying the crushed hazardous waste material. If the control valve 604 is opened, the hot air gathered at the top of the inner cavity of the furnace body 1 can flow out from the exhaust pipe 603 and pass through the filter plate 601 in the connecting pipe 605. This allows the odor and small particulate impurities in the hot air to be adsorbed and filtered. The filtered hot air will flow into the interior of the crushing box 506 along the air supply pipe 602. This allows the hot air to be used to pre-dry the hazardous waste material in the crushing box 506. Finally, when it is necessary to pre-burn the dried hazardous waste material on the supporting mesh plate 9, first disconnect the air inlet pipe 7 from the existing external heating equipment, then open the movable door 8 to ignite the hazardous waste material on the supporting mesh plate 9. At this time, close the movable door 8. Due to the change in air pressure inside the furnace body 1, the air inlet pipe 7 can transport outside air into the interior of the furnace body 1, thereby facilitating the pre-burning of the hazardous waste material inside the furnace body 1.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pre-combustion furnace for hazardous waste treatment, comprising a furnace body (1), characterized in that: The furnace body (1) is provided with a feeding component (4) at the top, and a crushing component (5) is provided at the top of the feeding component (4). The crushing component (5) is used to crush and disperse hazardous waste materials. A heat exchange component (6) is provided between the crushing component (5) and the feeding component (4). The feeding assembly (4) includes a feeding box (401) fixedly installed on the furnace body (1), a feeding roller (403) rotatably connected to the inner side of the feeding box (401), a feeding auger (404) fixedly installed on the surface of the feeding roller (403), and a through hole (402) communicating with the furnace body (1) at the bottom of the feeding roller (403). The crushing assembly (5) includes a crushing box (506) fixedly installed on the top of the feeding box (401). A main crushing shaft (503) and a secondary crushing shaft (505) are provided inside the crushing box (506). Crushing blades (507) are fixedly installed on the surfaces of the main crushing shaft (503) and the secondary crushing shaft (505). Gears (504) meshing with each other are fixedly installed on the surface of the main crushing shaft (503) and one end of the secondary crushing shaft (505). A rotating wheel (501) is fixedly installed on one end of the main crushing shaft (503) and one end of the feeding roller (403). Tracks (502) overlap on the surfaces of the two rotating wheels (501).

2. The pre-combustion furnace for hazardous waste treatment according to claim 1, characterized in that: The heat exchange assembly (6) includes a gas supply pipe (602) fixedly installed on one side of the pulverizing box (506) and communicating with the inside of the pulverizing box (506), and an exhaust pipe (603) fixedly installed on one side of the furnace body (1) and communicating with the inside of the furnace body (1). The ports of the gas supply pipe (602) and the exhaust pipe (603) are threaded with threaded sleeves (606), and a connecting pipe (605) is fixedly connected between the two threaded sleeves (606).

3. A pre-combustion furnace for hazardous waste treatment according to claim 2, characterized in that: A control valve (604) is fixedly installed on the outside of the gas pipeline (602), and a filter plate (601) is fixedly installed inside the connecting pipe (605).

4. A pre-combustion furnace for hazardous waste treatment according to claim 1, characterized in that: An air inlet pipe (7) is fixedly connected to the middle of the bottom of the furnace body (1). A support leg (2) is fixedly installed at the bottom of the furnace body (1). A support base (3) is fixedly installed at the bottom of the support leg (2). A movable door (8) is installed on the front of the furnace body (1) through a hinge. A load-bearing mesh plate (9) is fixedly connected to the bottom of the inner cavity of the furnace body (1).

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