Uniformly heated rotary furnace

Abstract

The utility model discloses a uniformly heated rotary furnace, which belongs to the technical field of rotary furnaces, and comprises a bottom plate, vertical plates, a rotary furnace body, a stepping motor, a rotating shaft, a gear and a gear ring, the upper end of the bottom plate is connected with the two symmetrically arranged vertical plates, the rotary furnace body is arranged between the two vertical plates through a bearing, and a feeding assembly is arranged on the peripheral side of the rotary furnace body. A high-temperature waste gas utilization mechanism is arranged at the upper ends of the two vertical plates and comprises a waste gas circulation box connected to the two vertical plates, a circulation cavity is formed in the waste gas circulation box, an air suction pump is arranged at the upper end of the waste gas circulation box, and the air inlet end of the air suction pump communicates with an air suction pipe. The end, away from the suction pipe, of the suction pump communicates with an air inlet pipe. According to the rotary furnace, heat in waste gas heated by the rotary furnace body can be utilized, air entering the rotary furnace body from the outside is preheated, and the utilization rate of the waste gas is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, in particular to a rotary kiln with uniform heat reception. Background Technique

[0002] The rotary kiln body is a long steel cylinder lined with refractory materials. The kiln body is supported on several pairs of supporting wheels and has an inclination of 3% - 6%. The kiln body is driven by a motor through a gear to rotate slowly. Materials are added from the higher tail end and discharged from the lower hearth end.

[0003] In the existing technology, there is a problem that the high-temperature waste gas discharged from the rotary kiln body is not recycled for heat, resulting in waste of the heat of this part of the waste gas and reducing the energy utilization efficiency. For this reason, we propose a rotary kiln with uniform heat reception. Content of the Utility Model

[0004] The purpose of the utility model is to provide a rotary kiln with uniform heat reception to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A rotary kiln with uniform heat reception, including a bottom plate, vertical plates, a rotary kiln body, a stepping motor, a rotating shaft, a gear and a gear ring. Two symmetrically arranged vertical plates are connected to the upper end of the bottom plate. The rotary kiln body is arranged between the two vertical plates through bearings. A feeding assembly is arranged on the outer peripheral side of the rotary kiln body. A discharge pipe is communicated with the right side of the rotary kiln body. A high-temperature waste gas utilization mechanism is arranged at the upper ends of the two vertical plates. The high-temperature waste gas utilization mechanism includes a waste gas flow conversion box connected to the two vertical plates. A flow cavity is opened in the waste gas flow conversion box. An air extraction pump is arranged at the upper end of the waste gas flow conversion box. The intake end of the air extraction pump is communicated with an air extraction pipe. One end of the air extraction pump far from the air extraction pipe is communicated with an intake pipe. The intake pipe penetrates into the flow cavity and is communicated with an air delivery pipe. The air delivery pipe penetrates out of the waste gas flow conversion box and is communicated with the rotary kiln body. The end of the waste gas flow conversion box far from the air delivery pipe is communicated with a waste gas discharge pipe. A one-way valve is arranged on the waste gas discharge pipe.

[0006] Preferably, a stepping motor is connected to the inner end of one of the vertical plates. The output end of the stepping motor is connected to a rotating shaft. The rotating shaft is connected to a gear. The gear is meshed and connected with a gear ring. The gear ring is arranged on the outer peripheral side of the rotary kiln body.

[0007] Preferably, the rotating shaft is rotationally connected to a support plate through a bearing. The support plate is connected to the bottom plate.

[0008] Preferably, an exhaust valve is arranged at the upper end of the waste gas flow conversion box.

[0009] Preferably, the feeding assembly includes a feeding pipe communicated with the rotary kiln body. A plug seat is slidably connected to the feeding pipe.

[0010] Preferably, a plurality of circumferentially distributed air channels are connected to the inner circumferential side of the rotary furnace body.

[0011] Preferably, both the gas transmission pipe and the waste gas discharge pipe are rotatably connected to the rotary furnace body.

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

[0013] 1. It is provided with a bottom plate, a vertical plate, a rotary furnace body, a stepping motor, a rotating shaft, a gear, a gear ring, a support plate, a high-temperature waste gas utilization mechanism, a feeding assembly, and a discharge pipe. The plug seat can be pulled out, the material is added into the rotary furnace body through the feeding pipe, then the plug seat is plugged back, and then the stepping motor and the air extraction pump are powered on. At this time, the output end of the stepping motor drives the rotating shaft to rotate, thereby driving the gear to rotate. At this time, the gear drives the gear ring to rotate, thereby driving the rotary furnace body to rotate. At this time, the rotary furnace body and the vertical plate produce a rotating action. At this time, the air extraction pump pumps the air in the environment into the intake pipe. At this time, the air in the intake pipe is heated by the hot air in the waste gas discharge pipe. At this time, the air passing through the gas transmission pipe enters the rotary furnace body. In the whole process, the check valve can only allow the waste gas in the waste gas discharge pipe to enter the waste gas flow conversion box. The utility model realizes the utilization of the heat in the waste gas for heating the rotary furnace body and preheating the air entering the rotary furnace body from the outside, improving the utilization rate of the waste gas.

[0014] 2. The air channels are provided to guide the air flow entering the rotary furnace body, guide the hot air flow to be evenly distributed, and improve the uniform heating of the rotary furnace body. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 It is a front view structural schematic diagram of the present utility model;

[0017] Figure 3 It is a structural schematic diagram of the high-temperature waste gas utilization mechanism of the present utility model;

[0018] Figure 4 It is a sectional structural schematic diagram of the air channel of the present utility model.

[0019] In the figure: 1, bottom plate; 2, vertical plate; 3, rotary furnace body; 4, stepping motor; 5, rotating shaft; 6, gear; 7, gear ring; 8, support plate; 9, high-temperature waste gas utilization mechanism; 901, waste gas flow box; 902, flow cavity; 903, air extraction pump; 904, air extraction pipe; 905, intake pipe; 906, gas transmission pipe; 907, waste gas discharge pipe; 908, check valve; 909, exhaust valve; 10, feeding assembly; 1001, feeding pipe; 1002, plug seat; 11, discharge pipe; 12, air flow channel. Detailed implementation mode

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4 , the present invention provides a technical solution: a rotary furnace with uniform heating, including a bottom plate 1, a vertical plate 2, a rotary furnace body 3, a stepping motor 4, a rotating shaft 5, a gear 6 and a gear ring 7. Two symmetrically arranged vertical plates 2 are connected to the upper end of the bottom plate 1. A rotary furnace body 3 is arranged between the two vertical plates 2 through bearings. A feeding assembly 10 is arranged on the outer peripheral side of the rotary furnace body 3. A discharge pipe 11 is connected to the right side of the rotary furnace body 3. A high-temperature waste gas utilization mechanism 9 is arranged at the upper ends of the two vertical plates 2. The high-temperature waste gas utilization mechanism 9 includes a waste gas flow box 901 connected to the two vertical plates 2. A flow cavity 902 is opened in the waste gas flow box 901. An air extraction pump 903 is arranged at the upper end of the waste gas flow box 901. The intake end of the air extraction pump 903 is connected to an air extraction pipe 904. One end of the air extraction pump 903 away from the air extraction pipe 904 is connected to an intake pipe 905. The intake pipe 905 penetrates into the flow cavity 902 and is connected to a gas transmission pipe 906. The gas transmission pipe 906 penetrates out of the waste gas flow box 901 and is connected to the rotary furnace body 3. One end of the waste gas flow box 901 away from the gas transmission pipe 906 is connected to a waste gas discharge pipe 907. A check valve 908 is arranged on the waste gas discharge pipe 907.

[0022] Specifically, a stepping motor 4 is connected to the inner end of one side vertical plate 2. The output end of the stepping motor 4 is connected to a rotating shaft 5. The rotating shaft 5 is connected to a gear 6. The gear 6 is meshed and connected to a gear ring 7. The gear ring 7 is arranged on the outer peripheral side of the rotary furnace body 3. The rotating shaft 5 is rotatably connected to a support plate 8 through a bearing. The support plate 8 is connected to the bottom plate 1. An exhaust valve 909 is arranged at the upper end of the waste gas flow conversion box 901. The feeding assembly 10 includes a feeding pipe 1001 communicated with the rotary furnace body 3. A plug seat 1002 is slidably connected to the feeding pipe 1001. A plurality of air flow channels 12 distributed circumferentially are connected to the inner peripheral side of the rotary furnace body 3. Both the air delivery pipe 906 and the waste gas discharge pipe 907 are rotatably connected to the rotary furnace body 3.

[0023] Working principle: Pull out the plug seat 1002, add the material into the rotary furnace body 3 through the feeding pipe 1001, then plug the plug seat 1002 back. Next, power on the stepping motor 4 and the air extraction pump 903. At this time, the output end of the stepping motor 4 drives the rotating shaft 5 to rotate, thereby driving the gear 6 to rotate. At this time, the gear 6 drives the gear ring 7 to rotate, thereby driving the rotary furnace body 3 to rotate. At this time, the rotary furnace body 3 and the vertical plate 2 generate a rotating action. At this time, the air extraction pump 903 pumps the air in the environment into the air inlet pipe 905. At this time, the air in the air inlet pipe 905 is heated by the hot air in the waste gas discharge pipe 907. At this time, the air passing through the air delivery pipe 906 enters the rotary furnace body 3. During the whole process, at this time, the one-way valve 908 can only allow the waste gas in the waste gas discharge pipe 907 to enter the waste gas flow conversion box 901. This utility model realizes the utilization of the heat in the waste gas that can heat the rotary furnace body 3, preheats the air entering the rotary furnace body 3 from the outside, and improves the utilization rate of the waste gas.

[0024] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary furnace with uniform heat distribution, comprising a bottom plate (1), a vertical plate (2), a rotary furnace body (3), a stepping motor (4), a rotating shaft (5), a gear (6) and a gear ring (7), characterized in that: The upper end of the bottom plate (1) is connected with two symmetrically arranged vertical plates (2). A rotary furnace body (3) is arranged between the two vertical plates (2) through bearings. A feeding assembly (10) is arranged on the outer peripheral side of the rotary furnace body (3). The right side of the rotary furnace body (3) is communicated with a discharge pipe (11). A high-temperature waste gas utilization mechanism (9) is arranged at the upper ends of the two vertical plates (2). The high-temperature waste gas utilization mechanism (9) includes a waste gas flow conversion box (901) connected to the two vertical plates (2). A flow cavity (902) is formed in the waste gas flow conversion box (901). An air extraction pump (903) is arranged at the upper end of the waste gas flow conversion box (901). The air inlet end of the air extraction pump (903) is communicated with an air extraction pipe (904). One end of the air extraction pump (903) far from the air extraction pipe (904) is communicated with an air inlet pipe (905). The air inlet pipe (905) penetrates into the flow cavity (902) and is communicated with an air delivery pipe (906). The air delivery pipe (906) penetrates out of the waste gas flow conversion box (901) and is communicated with the rotary furnace body (3). One end of the waste gas flow conversion box (901) far from the air delivery pipe (906) is communicated with a waste gas discharge pipe (907). A one-way valve (908) is arranged on the waste gas discharge pipe (907).

2. The rotary furnace with uniform heat reception according to claim 1, characterized in that: A stepping motor (4) is connected to the inner end of one of the vertical plates (2). The output end of the stepping motor (4) is connected with a rotating shaft (5). The rotating shaft (5) is connected with a gear (6). The gear (6) is meshed and connected with a gear ring (7). The gear ring (7) is arranged on the outer peripheral side of the rotary furnace body (3).

3. A rotary furnace with uniform heat reception according to claim 1, characterized in that: The rotating shaft (5) is rotatably connected with a support plate (8) through a bearing. The support plate (8) is connected to the bottom plate (1).

4. A rotary furnace with uniform heat reception according to claim 1, characterized in that: An exhaust valve (909) is arranged at the upper end of the waste gas flow conversion box (901).

5. A rotary furnace with uniform heat reception according to claim 1, characterized in that: The feeding assembly (10) includes a feeding pipe (1001) communicated with the rotary furnace body (3). A plug seat (1002) is slidably connected to the feeding pipe (1001).

6. A rotary furnace with uniform heat reception according to claim 1, characterized in that: A plurality of circumferentially distributed air flow channels (12) are connected to the inner peripheral side of the rotary furnace body (3).

7. A rotary furnace with uniform heat reception according to claim 1, characterized in that: Both the air delivery pipe (906) and the waste gas discharge pipe (907) are rotatably connected to the rotary furnace body (3).

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