Rapid cooling roller kiln

Abstract

The utility model discloses a rapid cooling roller kiln, and relates to the technical field of roller kilns. The rotary kiln comprises a kiln body, a heating area and a cooling area are arranged in the kiln body, supporting legs are fixedly connected to the bottom of the kiln body, a first roller and a second roller are rotationally connected to the interiors of the heating area and the cooling area respectively, the driving mechanism is arranged on one side of the kiln body and used for driving the first roller and the second roller to rotate, and the cooling mechanism is arranged below the cooling area and used for driving the first roller and the second roller to rotate. The method is used for rapidly cooling sintered materials. By arranging the cooling mechanism and the roller II, heat in the cooling area can be quickly conducted to the outside of the kiln body through cooling water circulating in the roller II during cooling, so that the heat exchange speed and the cooling efficiency can be remarkably improved, the space in the kiln body is not additionally occupied by utilizing the roller II to exchange heat, and the heat exchange efficiency is improved. The space utilization rate in the kiln body is improved, the fan arranged below the second roller enables heat exchange of the cooling area to be more uniform, and material damage caused by uneven cooling is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of roller kilns, in particular to a rapid cooling roller kiln. Background Art

[0002] A roller hearth kiln is a continuous firing kiln that uses rotating rollers to transport the pellets. Roller hearth kilns are widely used for mineral drying, pyrolysis, crushing, roasting, calcining, sintering, and other applications, including carbothermal reduction of metal oxide ores and desulfurization of metal sulfide ores. They offer a wide range of applications and are highly versatile.

[0003] Roller kilns generally consist of a heating area and a cooling area. Common cooling methods include forming cooling channels on the top, bottom or outside of the sides of the furnace or setting indirect cooling pipes in the cross-sectional direction of the furnace as cooling channels. The furnace is indirectly cooled by circulating refrigerants such as air and water in the cooling channels. Cooling devices installed outside the kiln body have low cooling efficiency, and cooling devices installed inside the kiln body will occupy space inside the kiln, reducing the versatility of the roller kiln. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the utility model provides a rapid cooling roller kiln, which can effectively solve the problems of the prior art.

[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 rapid cooling roller kiln, comprising a kiln body, wherein a heating zone and a cooling zone are arranged inside the kiln body, a support leg is fixedly connected to the bottom of the kiln body, a heat insulation curtain is arranged between the heating zone and the cooling zone, and a first roller and a second roller are rotatably connected inside the heating zone and the cooling zone respectively;

[0007] The driving mechanism is arranged on one side of the kiln body and is used to drive the first roller and the second roller to rotate;

[0008] The cooling mechanism is arranged below the cooling zone and is used to quickly cool the sintered material.

[0009] Furthermore, the sides of the roller rod 1 and the roller rod 2 close to the driving mechanism are fixedly connected with a helical gear disk, and both ends of the roller rod 2 are threadedly connected with a rotary joint.

[0010] Furthermore, the driving mechanism includes a transmission shaft, a helical gear, a bearing seat and a motor 1. One side of the support leg is fixedly connected to the bearing seat and the motor 1. The inside of the bearing seat is rotatably connected to the transmission shaft. The outer wall of the transmission shaft is fixedly connected to the helical gear. There are multiple groups of helical gears equidistantly distributed along the transmission shaft and mesh with the helical gear plates on one side of roller rod 1 and roller rod 2. A belt is sleeved on one end of the transmission shaft, and the side of the belt away from the transmission shaft is sleeved on the output end of motor 1.

[0011] Furthermore, the cooling mechanism includes a water tank, a refrigerator, a drain pipe, a water pump and a water pipe. A water tank is provided below the cooling area. The top surface of the water tank is fixedly connected to the refrigerator. One side of the water tank is fixedly connected to the water pump. The top of the refrigerator is fixedly connected to the drain pipe. The output end of the refrigerator is connected to the water tank. The side of the water pump away from the water tank is fixedly connected to the water pipe.

[0012] Furthermore, the interior of the second roller is hollow, the rotary joint on the side of the second roller close to the transmission shaft is connected to the water pipe, and the rotary joint on the other side is connected to the drainage pipe. A fan is provided below the second roller, and the bottom end of the fan is fixedly connected to the output end of the second motor.

[0013] The utility model has the following beneficial effects:

[0014] The utility model is provided with a cooling mechanism and a second roller. When cooling is performed, cooling water is sent into the interior of the second roller through a rotary joint. The heat inside the cooling zone can be quickly conducted to the outside of the kiln body through the cooling water circulating inside the second roller, thereby significantly improving the heat exchange speed and the cooling efficiency. The heat exchange by the second roller does not occupy additional space inside the kiln body, thereby improving the space utilization rate inside the kiln body. The fan arranged below the second roller can make the heat exchange in the cooling zone more uniform, avoiding damage to the material caused by uneven cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a front view of the utility model;

[0017] Figure 2 This is a schematic diagram of the back of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 4 It is the internal schematic diagram of the utility model.

[0020] In the accompanying drawings, the list of components represented by each reference numeral is as follows: 1. Kiln body; 101. Heating zone; 102. Cooling zone; 103. Thermal insulation curtain; 104. Support leg; 2. Drive shaft; 201. Bevel gear; 3. Bearing seat; 4. Motor 1; 5. Roller 1; 6. Roller 2; 601. Rotary joint; 7. Water tank; 701. Refrigerator; 702. Drain pipe; 703. Water pump; 704. Water pipe; 8. Fan; 801. Motor 2. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] See also Figure 1-4 As shown, the utility model is a rapid cooling roller kiln, comprising a kiln body 1, wherein a heating zone 101 and a cooling zone 102 are provided inside the kiln body 1, support legs 104 are fixedly connected to the bottom of the kiln body 1, and a heat insulation curtain 103 is provided between the heating zone 101 and the cooling zone 102, and roller rods 1 5 and roller rods 2 6 are rotatably connected inside the heating zone 101 and the cooling zone 102 respectively, and roller rods 1 5 and roller rods 2 6 are fixedly connected to the side close to the driving mechanism with helical gear discs, and the provided support legs 104 can stably support the kiln body 1 to prevent the roller kiln from shaking and damaging the material during operation, and the heat insulation curtain 103 can separate the heating zone 101 and the cooling zone 102 to prevent the heat of the heating zone 101 from escaping to the cooling zone 102 and affecting the cooling effect, and the helical gear discs on one side of roller rods 1 5 and roller rods 2 6 can engage with the driving mechanism, thereby driving roller rods 1 5 and roller rods 2 6 to rotate, so that the material moves inside the kiln body 1.

[0023] The driving mechanism includes a transmission shaft 2, a helical gear 201, a bearing seat 3 and a motor 4. One side of the support leg 104 is fixedly connected to the bearing seat 3 and the motor 4. The internal rotation of the bearing seat 3 is connected to the transmission shaft 2. The outer wall of the transmission shaft 2 is fixedly connected to the helical gear 201. There are multiple groups of helical gears 201 distributed equidistantly along the transmission shaft 2 and meshing with the helical gear plates on one side of the roller 1 5 and the roller 2 6. A belt is sleeved on one end of the transmission shaft 2, and the side of the belt away from the transmission shaft 2 is sleeved on the output end of the motor 4. The bearing seat 3 is set to limit the transmission shaft 2. At the same time, the inside of the bearing seat 3 The bearing can convert the rotational friction of the transmission shaft 2 into rolling friction, reducing the resistance of driving the transmission shaft 2. A belt is sleeved on one end of the transmission shaft 2, and the other end of the belt is sleeved on the output end of the motor 4. Starting the motor 4 can drive the belt to rotate, thereby driving the transmission shaft 2 to rotate. The outer wall of the transmission shaft 2 is fixedly connected to multiple groups of helical gears 201, which mesh with the helical gears on one side of the roller 1 5 and the roller 2 6. When the transmission shaft 2 drives the helical gears 201 to rotate, the helical gears 201 can drive the roller 1 5 and the roller 2 6 to engage and rotate, thereby driving the material to move in the kiln body 1.

[0024] The cooling mechanism includes a water tank 7, a refrigerator 701, a drain pipe 702, a water pump 703 and a water supply pipe 704. A water tank 7 is provided below the cooling zone 102. The top surface of the water tank 7 is fixedly connected to the refrigerator 701. One side of the water tank 7 is fixedly connected to the water pump 703. The top of the refrigerator 701 is fixedly connected to the drain pipe 702. The output end of the refrigerator 701 is connected to the water tank 7. The side of the water pump 703 away from the water tank 7 is fixedly connected to the water supply pipe 704. The drain pipe 702 can discharge the cooling water inside the roller 2 6 and cool the hot water discharged from the drain pipe 702 through the refrigerator 701. The cooling water is sent to the water tank 7 for temporary storage through the output end of the refrigerator 701. A water pump 703 is connected to one side of the water tank 7. The water pump 703 can pump the cooling water in the water tank 7 into the water supply pipe 704 and send the cooling water into the roller 2 6 through the water supply pipe 704 to complete the circulation of the cooling water.

[0025] Both ends of roller rod 2 6 are threadedly connected with a rotary joint 601. The interior of roller rod 2 6 is hollow. The rotary joint 601 on the side of roller rod 2 close to the transmission shaft 2 is connected to the water pipe 704, and the rotary joint 601 on the other side is connected to the drain pipe 702. A fan 8 is provided below roller rod 2 6, and the bottom end of fan 8 is fixedly connected to the output end of motor 2 801. The set rotary joint 601 can connect the roller 2 6 with the drainage pipe 702 and the water pipe 704. The rotary joint 601 can input cooling water while the roller 2 6 rotates. It does not affect the work of the roller 2 6 and does not occupy additional space inside the kiln body 1, thereby improving the space utilization rate inside the roller kiln and not affecting the versatility of the roller kiln. The interior of the roller 2 6 is hollow, so that the cooling water can circulate inside the roller 2 6. The heat inside the cooling zone 102 can be quickly transferred to the outside of the kiln body 1 through the cooling water circulating inside the roller 2 6, thereby significantly improving the heat exchange speed and cooling efficiency. The set motor 2 801 can drive the fan 8 to rotate. The fan 8 can promote the air circulation inside the cooling zone 102, making the heat exchange more uniform and avoiding damage to the material caused by uneven cooling.

[0026] Working principle: When in use, place the material on top of roller 1 5, start motor 1 4, motor 1 4 can drive the belt to rotate, and then drive the transmission shaft 2 to rotate. The outer wall of the transmission shaft 2 is fixedly connected with multiple sets of helical gears 201, and the helical gears 201 are engaged with the helical gear discs on one side of roller 1 5 and roller 2 6. When the transmission shaft 2 drives the helical gear 201 to rotate, the helical gear 201 can drive roller 1 5 and roller 2 6 to engage and rotate, thereby driving the material to move in the kiln body 1. The material first passes through the heating zone 101 and is heated. After the heating is completed, the material is sent to the cooling zone 102 by roller 2 6, and then the system is started. Cooler 701 and water pump 703, water pump 703 can pump the cooling water in the water tank 7 into the water pipe 704, and send the cooling water into the roller 2 6 through the water pipe 704 to cool the inside of the cooling zone 102. The cooling water after heat exchange is discharged through the drain pipe 702 and enters the refrigerator 701. The refrigerator 701 cools the cooling water after heat exchange and sends it to the water tank 7 for temporary storage. Start motor 2 801, motor 2 801 can drive fan 8 to rotate, and fan 8 can promote air circulation inside the cooling zone 102, making heat exchange more uniform and avoiding damage to materials caused by uneven cooling.

[0027] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions described in the aforementioned embodiments, any equivalent replacement of some of the technical features therein, and any modification, equivalent replacement, and improvement made are within the scope of protection of the present invention.

Claims

1. A rapid cooling roller kiln, comprising a kiln body (1), wherein a heating zone (101) and a cooling zone (102) are provided inside the kiln body (1), and a support leg (104) is fixedly connected to the bottom of the kiln body (1), characterized in that: Also includes: A heat-insulating curtain (103) is provided between the heating zone (101) and the cooling zone (102), and roller rod 1 (5) and roller rod 2 (6) are rotatably connected inside the heating zone (101) and the cooling zone (102). A driving mechanism is provided on one side of the kiln body (1) and is used to drive the first roller (5) and the second roller (6) to rotate; The cooling mechanism is arranged below the cooling zone (102) and is used for rapidly cooling the sintered material.

2. A rapid cooling roller kiln according to claim 1, characterized in that: The roller rod 1 (5) and the roller rod 2 (6) are both fixedly connected to a helical gear disc on one side close to the driving mechanism, and both ends of the roller rod 2 (6) are threadedly connected to a rotary joint (601).

3. A rapid cooling roller kiln according to claim 2, characterized in that: The driving mechanism comprises a transmission shaft (2), a helical gear (201), a bearing seat (3) and a motor (4); one side of the support leg (104) is fixedly connected to the bearing seat (3) and the motor (4); the interior of the bearing seat (3) is rotatably connected to the transmission shaft (2); the outer wall of the transmission shaft (2) is fixedly connected to the helical gear (201); a plurality of groups of the helical gears (201) are evenly distributed along the transmission shaft (2) and mesh with the helical gear discs on one side of the roller rod (5) and the roller rod (6); a belt is sleeved on one end of the transmission shaft (2); and the side of the belt away from the transmission shaft (2) is sleeved on the output end of the motor (4).

4. A rapid cooling roller kiln according to claim 1, characterized in that: The cooling mechanism comprises a water tank (7), a refrigerator (701), a drainage pipe (702), a water pump (703) and a water delivery pipe (704); a water tank (7) is provided below the cooling zone (102); the top surface of the water tank (7) is fixedly connected to the refrigerator (701); one side of the water tank (7) is fixedly connected to the water pump (703); the top end of the refrigerator (701) is fixedly connected to the drainage pipe (702); the output end of the refrigerator (701) is in communication with the water tank (7); and the side of the water pump (703) away from the water tank (7) is fixedly connected to the water delivery pipe (704).

5. A rapid cooling roller kiln according to claim 1, characterized in that: The interior of the second roller (6) is hollow. The rotary joint (601) on the side of the second roller (6) close to the transmission shaft (2) is connected to the water pipe (704), and the rotary joint (601) on the other side is connected to the drainage pipe (702). A fan (8) is provided below the second roller (6), and the bottom end of the fan (8) is fixedly connected to the output end of the second motor (801).

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