Tunnel kiln for solid waste resource disposal and utilization

Abstract

The utility model relates to the technical field of solid waste treatment, in particular to a tunnel kiln for solid waste resource disposal and utilization, which comprises a first heat preservation kiln body and a second heat preservation kiln body, a circulation track is arranged between the first heat preservation kiln body and the second heat preservation kiln body, and a branch track is arranged on the right side of the circulation track. The top of the first heat preservation kiln body and the top of the second heat preservation kiln body are each fixedly provided with a moisture removal fan. By arranging the first heat preservation kiln body, the branch track, the circulating track, the variable-angle flow blocking mechanism and the second heat preservation kiln body, the circulating conveying requirement of the kiln car can be met through the branch track and the circulating track, and the first heat preservation kiln body and the second heat preservation kiln body conduct circulating drying treatment on solid waste bricks on the kiln car. And the residence time of hot air in the first heat preservation kiln body or the second heat preservation kiln body is guaranteed due to the existence of the variable-angle flow blocking mechanism, the overall drying efficiency is guaranteed, meanwhile, the occupied space of the equipment is smaller, and the actual use requirement is better met.

Description

Technical Field

[0001] The utility model relates to the technical field of solid waste treatment, in particular to a tunnel kiln used for the disposal and utilization of solid waste resources. Background Art

[0002] Solid waste treatment refers to a series of processes including collection, transportation, pretreatment, physical and chemical treatment, thermal treatment, biological treatment, landfill disposal and resource utilization of solid waste to achieve the goals of harmlessness, reduction and resource utilization.

[0003] For cyanide hazardous waste, it is generally dehydrated, crushed and bricked, and then transported to a tunnel kiln with a kiln car for high-temperature drying. The basic tunnel kiln is generally a one-way design and does not have the functions of circulating drying and flow obstruction treatment. The overall drying uniformity and drying efficiency are average. In order to ensure the drying effect, it is often necessary to configure a longer kiln or use a longer drying time, which increases the actual processing cost. In order to solve the above technical problems, we have designed a tunnel kiln for the disposal and utilization of solid waste resources. Utility Model Content

[0004] The purpose of the utility model is to provide a tunnel kiln for the disposal and utilization of solid waste resources, which has the advantages of circulating drying and obstruction treatment, and solves the problem that the basic tunnel kiln does not have the function of circulating conveying and drying, and the overall drying uniformity and drying efficiency are average. In order to ensure the drying effect, it is often necessary to configure a longer kiln or use a longer drying time, which increases the actual processing cost.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a tunnel kiln for the disposal and utilization of solid waste resources, comprising a first insulated kiln body and a second insulated kiln body, a circulating track installed between the first insulated kiln body and the second insulated kiln body, a branch track installed on the right side of the circulating track, exhaust fans fixedly installed on the tops of the first insulated kiln body and the second insulated kiln body, gas burners fixedly inlaid on the surfaces of the first insulated kiln body and the second insulated kiln body, and variable angle flow resistance mechanisms installed in the inner cavities of the first insulated kiln body and the second insulated kiln body, the variable angle flow resistance mechanism comprising a servo motor, a screw fixedly connected to the output end of the servo motor, a displacement sleeve provided on the surface threaded sleeve of the screw, a positioning rod and a gear provided on the top of the displacement sleeve, one end of the positioning rod fixedly connected to an auxiliary block, a movable shaft movably installed through the surface of the auxiliary block, and a movable plate fixedly connected to the side of the movable shaft away from the auxiliary block.

[0006] Preferably, the left and right sides of the first heat-insulating kiln body and the second heat-insulating kiln body are fixedly connected with a stabilizing seat, and the connection between the left side of the servo motor and the stabilizing seat is bolted.

[0007] Preferably, the surface of the displacement sleeve is in sliding contact with the inner wall of the first insulation kiln body, and the surface of the displacement sleeve is in sliding contact with the inner wall of the second insulation kiln body. The top of the displacement sleeve is provided with a tooth groove, and the gear is engaged with the tooth groove.

[0008] Preferably, the connection between the positioning rod and the first heat-insulating kiln body and the connection between the positioning rod and the second heat-insulating kiln body are both movably connected, and the gear is fixedly sleeved on the positioning rod.

[0009] Preferably, both left and right ends of the movable plate are provided with pointed ends, and there are several movable plates, which are all located in the first heat-insulating kiln body and the second heat-insulating kiln body.

[0010] Preferably, the number of the branch rails is two, and thermal insulation curtains are installed on the left and right sides of the first thermal insulation kiln body and the second thermal insulation kiln body.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The utility model has the advantages of cyclic drying and choke treatment by arranging a first heat-insulating kiln body, a branch track, a circulation track, a variable-angle flow-blocking mechanism and a second heat-insulating kiln body. The branch track and the circulation track can be used to meet the circulation transportation requirements of the kiln car. The first heat-insulating kiln body and the second heat-insulating kiln body carry out cyclic drying treatment on the solid waste bricks on the kiln car, and the existence of the variable-angle flow-blocking mechanism ensures that the hot air stays in the first heat-insulating kiln body or the second heat-insulating kiln body for a longer time. While ensuring the overall drying efficiency, the equipment occupies less space and is more in line with actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a sectional perspective view of the structure of the utility model;

[0015] Figure 3 This is a three-dimensional schematic diagram of the variable angle flow resistance mechanism of the utility model;

[0016] Figure 4 For this utility model Figure 3 A is an enlarged schematic diagram.

[0017] In the figure: 1. First thermal insulation kiln body; 2. Gas supply burner; 3. Thermal insulation curtain; 4. Branch track; 5. Circulation track; 6. Variable angle flow blocking mechanism; 601. Stable seat; 602. Screw; 603. Displacement sleeve; 604. Movable plate; 605. Servo motor; 606. Tooth groove; 607. Positioning rod; 608. Gear; 609. Auxiliary block; 610. Movable shaft; 7. Second thermal insulation kiln body; 8. Dehumidification fan. DETAILED DESCRIPTION

[0018] See also Figures 1-4 , a tunnel kiln for the disposal and utilization of solid waste resources, comprising a first insulated kiln body 1 and a second insulated kiln body 7, a circulating track 5 is installed between the first insulated kiln body 1 and the second insulated kiln body 7, a branch track 4 is installed on the right side of the circulating track 5, the first insulated kiln body 1 and the second insulated kiln body 7 are fixedly installed with an exhaust fan 8 on the top, by arranging the exhaust fan 8, the moisture formed by drying in the first insulated kiln body 1 or the second insulated kiln body 7 can be discharged in the working state, the surfaces of the first insulated kiln body 1 and the second insulated kiln body 7 are fixedly inlaid with a gas delivery burner 2, the inner cavities of the first insulated kiln body 1 and the second insulated kiln body 7 are both installed with a variable angle flow resistance mechanism 6, the variable angle flow resistance mechanism 6 includes a servo motor 605, the output end of the servo motor 605 is fixedly connected to a screw 602, and the surface of the screw 602 is threadedly sleeved There is a displacement sleeve 603. By arranging the screw 602 and the displacement sleeve 603, a screw transmission can be achieved. When the screw 602 is driven by the servo motor 605, the displacement sleeve 603 can be displaced laterally. A positioning rod 607 and a gear 608 are provided on the top of the displacement sleeve 603. One end of the positioning rod 607 is fixedly connected to an auxiliary block 609. A movable shaft 610 is movably installed on the surface of the auxiliary block 609. By arranging the movable shaft 610, the initial inclination angle of the movable plate 604 can be pre-adjusted to meet different flow resistance requirements. The side of the movable shaft 610 away from the auxiliary block 609 is fixedly connected to the movable plate 604. By arranging the movable plate 604, a blocking surface can be formed in the inclined state to assist in slowing down the flow speed of the hot air, increase the residence time of the hot air, and facilitate uniform drying of the material.

[0019] See also Figure 2 and Figure 3 The left and right sides of the first and second heat-insulating kiln bodies 1 and 7 are fixedly connected with a stabilizing seat 601, and the left side of the servo motor 605 is bolted to the connection between the stabilizing seat 601;

[0020] See also Figure 2 and Figure 3 The surface of the displacement sleeve 603 is in sliding contact with the inner wall of the first heat-insulating kiln body 1, and the surface of the displacement sleeve 603 is in sliding contact with the inner wall of the second heat-insulating kiln body 7. A tooth groove 606 is provided on the top of the displacement sleeve 603, and the gear 608 is engaged with the tooth groove 606. By setting the tooth groove 606 and the gear 608, a meshing transmission effect can be achieved, and then when the displacement sleeve 603 is linearly displaced, the gear 608 will rotate forward and reverse;

[0021] See also Figure 2 、 Figure 3 and Figure 4The connection between the positioning rod 607 and the first insulation kiln body 1 and the connection between the positioning rod 607 and the second insulation kiln body 7 are both movably connected. By setting the positioning rod 607, the fixed installation requirements of the gear 608 and the auxiliary block 609 can be met. The gear 608 is fixedly sleeved on the positioning rod 607;

[0022] See also Figure 2 and Figure 4 , both ends of the movable plate 604 are set with pointed ends, the number of movable plates 604 is several, and all are located in the first insulation kiln body 1 and the second insulation kiln body 7;

[0023] See also Figure 1 and Figure 2 There are two branch tracks 4. Insulation curtains 3 are installed on the left and right sides of the first insulation kiln body 1 and the second insulation kiln body 7. By setting the insulation curtains 3, they can naturally droop downward when no kiln car passes, effectively slowing down the heat dissipation rate in the first insulation kiln body 1 or the second insulation kiln body 7;

[0024] The left and right ends of the screw 602 are designed to be smooth, and the smooth surface is movably connected to the stabilizing seat 601 through an auxiliary bearing. The stabilizing seat 601 and the auxiliary bearing cooperate to ensure the rotational stability of the screw 602. By providing the stabilizing seat 601, the fixed installation requirements of the servo motor 605 can be met, and both ends of the screw 602 can be loaded.

[0025] The movable shaft 610 and the auxiliary block 609 are movably connected via a damping bearing, which is used to increase the friction force that the movable shaft 610 needs to overcome when rotating, and prevent the movable shaft 610 from rotating randomly without external force.

[0026] The gas inlet end of the gas burner 2 is connected to an external natural gas source. With natural gas as a heat source, the gas burner 2 can be introduced for combustion to achieve the purpose of drying the solid waste bricks.

[0027] The circulating track 5 is connected to the two branch tracks 4 by a switch structure. The switch is an important device in the rail transportation system. Its main function is to guide the kiln car from the branch track 4 to the circulating track 5, or from the circulating track 5 to the branch track 4, so as to realize the kiln car's turning and crossing the line, thereby achieving the purpose of cyclic drying treatment and feeding and discharging of materials according to actual needs.

[0028] In actual application, a moisture conveying pipe is connected to the top of the first heat-insulating kiln body 1 and the second heat-insulating kiln body 7 and located outside the dehumidification fan 8. When the dehumidification fan 8 is in operation, the moisture in the kiln is attracted and discharged, which is beneficial to the drying of the solid waste bricks.

[0029] In actual application, the number of gas delivery burners 2 and movable plates 604 can be flexibly increased or decreased to meet various processing and use requirements.

[0030] During use, all components are in the initial installation state. After the cyanide hazardous waste is dehydrated and mixed with auxiliary materials, it is aged, screened, crushed and re-screened. Finally, the brick-making equipment is used to press the material into shape, and the brick-shaped material is placed on the kiln car. The kiln car is connected to the circulation track 5 through the rear branch track 4 and placed in the second insulation kiln body 7. Natural gas is introduced into the gas transmission burner 2 and ignited for high-temperature drying. The drying of the material will produce moisture mixed in the gas. At this time, the dehumidification fan 8 is controlled to work to discharge the moisture, and the gas in the second insulation kiln body 7 flows, and the servo motor 605 is synchronously controlled to work. The screw rod 602 is driven to rotate. Under the screw transmission, the displacement sleeve 603 is displaced laterally. Under the meshing transmission of the tooth groove 606 and the gear 608, the positioning rod 607 drives the auxiliary block 609 and the movable plate 604 to rotate. Adjusting the angle of the movable plate 604 can assist in intercepting the gas flow, increase the hot gas retention time, and ensure the uniformity and contact time of the hot gas with the brick material. When circulating drying is required, the kiln car only needs to run on the circulating track 5, circulating through the second insulating kiln body 7 and the first insulating kiln body 1. When drying is completed, the kiln car can be moved out through the front branch track 4 through the cooperation of the switch.

[0031] To sum up: the tunnel kiln used for the disposal and utilization of solid waste resources solves the problem that the basic tunnel kiln does not have the function of circulating and conveying drying, and the overall drying uniformity and drying efficiency are average. In order to ensure the drying effect, it is often necessary to configure a longer kiln or use a longer drying time, which increases the actual processing cost.

Claims

1. A tunnel kiln for solid waste resource disposal and utilization, comprising a first heat-insulating kiln body (1) and a second heat-insulating kiln body (7), characterized in that: A circulating track (5) is installed between the first heat-insulating kiln body (1) and the second heat-insulating kiln body (7), a branch track (4) is installed on the right side of the circulating track (5), a moisture exhaust fan (8) is fixedly installed on the top of the first heat-insulating kiln body (1) and the second heat-insulating kiln body (7), a gas burner (2) is fixedly embedded on the surface of the first heat-insulating kiln body (1) and the second heat-insulating kiln body (7), and a variable angle flow blocking mechanism (6) is installed in the inner cavity of the first heat-insulating kiln body (1) and the second heat-insulating kiln body (7), and the variable angle flow blocking mechanism (6) includes a servo motor. A motor (605) is provided, wherein the output end of the servo motor (605) is fixedly connected to a screw rod (602), a displacement sleeve (603) is provided on the surface of the screw rod (602), a positioning rod (607) and a gear (608) are provided on the top of the displacement sleeve (603), one end of the positioning rod (607) is fixedly connected to an auxiliary block (609), a movable shaft (610) is movably installed through the surface of the auxiliary block (609), and a movable plate (604) is fixedly connected to the side of the movable shaft (610) away from the auxiliary block (609).

2. The tunnel kiln for solid waste disposal and utilization according to claim 1, characterized in that: The left and right sides of the first heat-insulating kiln body (1) and the second heat-insulating kiln body (7) are fixedly connected with a stabilizing seat (601), and the left side of the servo motor (605) is bolted to the connection between the stabilizing seat (601).

3. The tunnel kiln for solid waste disposal and utilization according to claim 1, characterized in that: The surface of the displacement sleeve (603) is in sliding contact with the inner wall of the first heat-insulating kiln body (1), and the surface of the displacement sleeve (603) is in sliding contact with the inner wall of the second heat-insulating kiln body (7). A tooth groove (606) is provided on the top of the displacement sleeve (603), and the gear (608) is engaged with the tooth groove (606).

4. The tunnel kiln for solid waste disposal and utilization according to claim 1, characterized in that: The connection between the positioning rod (607) and the first heat-insulating kiln body (1) and the connection between the positioning rod (607) and the second heat-insulating kiln body (7) are both movably connected, and the gear (608) is fixedly sleeved on the positioning rod (607).

5. The tunnel kiln for solid waste disposal and utilization according to claim 1, characterized in that: Both left and right ends of the movable plate (604) are provided with pointed ends. There are a plurality of movable plates (604), and all of them are located in the first heat-insulating kiln body (1) and the second heat-insulating kiln body (7).

6. The tunnel kiln for solid waste disposal and utilization according to claim 1, characterized in that: The number of the branch rails (4) is two, and thermal insulation curtains (3) are installed on the left and right sides of the first thermal insulation kiln body (1) and the second thermal insulation kiln body (7).

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