A type of internal spiral rotary kiln

Abstract

This utility model discloses an internal spiral rotary kiln, comprising an outer kiln body, a first spiral fixedly connected to the outer surface of the inner kiln body, an external heating wire fixedly connected to the inside of the external heater, a first rotating shaft fixedly connected to one end of the inner kiln body, and a spiral shaft fixedly connected to the other end of the inner kiln body. Through this structure, the first spiral fixedly connected to the outer surface of the inner kiln body, the first rotating shaft fixedly connected to one end of the inner kiln body, and the first motor fixedly connected to the front of the first rotating shaft, result in better material agitation and more sufficient material retention. The first spiral fixedly connected to the outer surface of the inner kiln body, the internal heating wire fixedly connected to the inside of the inner kiln body, and the external heater fixedly connected to the upper part of the outer side of the outer kiln body, with the external heating wire fixedly connected to the inside of the external heater, improve the uneven heat transfer characteristic of traditional methods, resulting in more uniform heating of the material.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, and in particular to an internal spiral cylindrical rotary kiln. Background Technology

[0002] Compared with traditional rotary kilns, the internal spiral drum rotary kiln can precisely control the material residence time, reduce material loss caused by local overheating, and reduce energy consumption. With the integration of intelligent control technology, it can further adapt to the production needs of multiple varieties and small batches by adjusting parameters such as rotation speed and temperature in real time, and has become an important equipment form in the field of modern industrial heat processing.

[0003] The internal spiral rotary kiln is an improved thermal equipment of the traditional rotary kiln. Its technological development stems from the industrial demand for efficient pyrolysis, roasting and material processing. However, the internal spiral rotary kiln achieves material tumbling and heat transfer through the rotation of the cylinder, which has problems such as uneven material residence time, low thermal efficiency and local overheating, making it difficult to meet the requirements of refined production. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide an internal spiral rotary kiln, which makes the material turning effect better, the material stays more fully, and improves the drawbacks of uneven heat transfer in the traditional method, so that the heated material is heated more evenly.

[0005] This utility model also provides a rotary kiln with an inner spiral cylinder as described above, including an outer kiln body, an inner kiln body provided inside the outer kiln body, a first spiral fixedly connected to the outer surface of the inner kiln body, an inner heating wire fixedly connected to the inside of the inner kiln body, an outer heater fixedly connected to the upper part of the outer side of the outer kiln body, an outer heating wire fixedly connected to the inside of the outer heater, a first rotating shaft fixedly connected to one end of the inner kiln body, and a spiral shaft fixedly connected to the other end of the inner kiln body.

[0006] A sealing ring is fixedly connected to one side of the opening of the outer kiln body, and a kiln cover is fixedly connected to the other side of the sealing ring. A second discharge port is fixedly connected below the kiln cover.

[0007] According to the present invention, a first motor is fixedly connected to the front of the first rotating shaft, and a first bracket is fixedly connected to the outside of the first motor.

[0008] According to the present invention, a rotary kiln with an inner spiral cylinder is provided with a second spiral fixedly connected to the outside of the spiral shaft, and a conveying cylinder is provided outside the second spiral. A feed inlet is fixedly connected to the upper side of one side of the conveying cylinder, and a first discharge outlet is fixedly connected to the lower side of the other side of the conveying cylinder.

[0009] According to the present invention, in an internal spiral rotary kiln, two driven main gears are fixedly connected to the outer side of the outer kiln body.

[0010] According to the present invention, an inner spiral rotary kiln is provided with a driven gear fixedly connected to the middle of the outer side of the outer kiln body, a driving gear is fixedly engaged with the bottom side of the driven gear, a second rotating shaft is fixedly connected to the inner side of the driving gear, a second motor is fixedly connected to one side of the second rotating shaft, and a second bracket is fixedly connected below the second motor.

[0011] According to the present invention, a third support is provided below the spiral shaft in an internal spiral cylindrical rotary kiln.

[0012] According to the present invention, an internal spiral rotary kiln has two rows of fixed support legs evenly arranged on the lower side of the outer kiln body, and a driven gear is slidably and fixedly connected to the inner side of the fixed support legs. Beneficial effects

[0013] 1. An inner kiln body is provided inside the outer kiln body. A first spiral is fixedly connected to the outer surface of the inner kiln body. A first rotating shaft is fixedly connected to one end of the inner kiln body. A first motor is fixedly connected to the front of the first rotating shaft, which makes the material turning effect better and the material stays more fully.

[0014] 2. A first spiral is fixedly connected to the outer surface of the inner kiln body, an inner heating wire is fixedly connected to the inside of the inner kiln body, an outer heater is fixedly connected to the upper part of the outer side of the outer kiln body, and an outer heating wire is fixedly connected to the inside of the outer heater. This improves the shortcomings of uneven heat transfer in traditional methods, and the heated material is heated more evenly. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a perspective view of an internal spiral cylindrical rotary kiln according to the present invention. Figure 2 This is a cross-sectional view of an internal spiral cylindrical rotary kiln according to the present invention. Figure 3 This is a front view of an internal spiral cylindrical rotary kiln according to the present invention; Figure 4 In this utility model Figure 2 Enlarged view of point A in the middle; Legend: 1. Outer kiln body; 2. Inner kiln body; 3. First spiral; 4. Feed cylinder; 5. Feed inlet; 6. Sealing ring; 7. First rotating shaft; 8. Spiral shaft; 9. Second spiral; 10. First discharge outlet; 11. Kiln cover; 12. First support; 13. First motor; 14. Second motor; 15. Second rotating shaft; 16. Drive gear; 17. Second support; 18. Fixed support leg; 19. Inner heating wire; 20. Second discharge outlet; 21. Driven gear; 22. Outer heating wire; 23. Outer heater; 24. Driven main gear; 25. Driven secondary gear; 26. Third support. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-4 This utility model provides an internal spiral rotary kiln, which includes an outer kiln body 1, an inner kiln body 2 on the inner side of the outer kiln body 1, a first spiral 3 fixedly connected to the outer surface of the inner kiln body 2, an inner heating wire 19 fixedly connected to the inside of the inner kiln body 2, an outer heater 23 fixedly connected to the upper part of the outer side of the outer kiln body 1, an outer heating wire 22 fixedly connected to the inside of the outer heater 23, a first rotating shaft 7 fixedly connected to one end of the inner kiln body 2, and a spiral shaft 8 fixedly connected to the other end of the inner kiln body 2.

[0018] Specifically, the innermost part of the inner kiln body 2 is a hollow structure, and both the external heating wire 22 and the internal heating wire 19 rely on the principle of resistance heating for heating.

[0019] A sealing ring 6 is fixedly connected to one side of the opening of the outer kiln body 1, and a kiln cover 11 is fixedly connected to the other side of the sealing ring 6. A second discharge port 20 is fixedly connected below the kiln cover 11.

[0020] Specifically, the sealing ring 6 is mainly used for sealing the connection between the outer kiln body 1 and the kiln cover 11. The inner side of the sealing ring 6 has a bearing device, which can keep the kiln cover 11 relatively stationary while the outer kiln body 1 is rotating.

[0021] A first motor 13 is fixedly connected to the front of the first rotating shaft 7, and a first bracket 12 is fixedly connected to the outside of the first motor 13.

[0022] Specifically, the first motor 13 provides the power source for the rotation of the inner kiln body 2.

[0023] A second spiral 9 is fixedly connected to the outside of the spiral shaft 8. A feeding cylinder 4 is provided on the outside of the second spiral 9. A feed inlet 5 is fixedly connected to the upper side of one side of the feeding cylinder 4, and a first discharge outlet 10 is fixedly connected to the lower side of the other side of the feeding cylinder 4.

[0024] Specifically, the raw material enters the outer kiln body 1 through the rotational extrusion action between the second spiral 9 and the conveying cylinder 4.

[0025] Two driven main gears 24 are fixedly connected to the outer side of the outer kiln body 1.

[0026] Specifically, the driven main gear 24 is mainly to reduce the pressure caused by the rotation of the driven gear 21 driving the outer kiln body 1 to rotate.

[0027] A driven gear 21 is fixedly connected to the middle of the outer side of the outer kiln body 1. A driving gear 16 is fixedly connected to the bottom side of the driven gear 21. A second rotating shaft 15 is fixedly connected to the inner side of the driving gear 16. A second motor 14 is fixedly connected to one side of the second rotating shaft 15. A second bracket 17 is fixedly connected to the bottom of the second motor 14.

[0028] Specifically, the second motor 14 drives the driven gear 21 to rotate via the driving gear 16.

[0029] A third support 26 is provided below the spiral shaft 8.

[0030] Specifically, the third bracket 26 is mainly used to support the feeding section represented by the feeding cylinder 4.

[0031] Two rows of fixed support legs 18 are evenly arranged on the lower side of the outer kiln body 1, and a driven auxiliary gear 25 is slidably and fixedly connected to the inner side of the fixed support legs 18.

[0032] Specifically, the driven auxiliary gear 25 and the driven main gear 24 assist in the rotation of the outer kiln body 1.

[0033] Working principle: The raw material enters the conveying cylinder 4 through the feed port 5, and is transported by the second spiral 9. It enters the outer kiln body 1 through the first discharge port 10. Under the combined rotation of the first spiral 3 on the inner kiln body 2 and the rotation of the outer kiln body 1, the raw material is fully agitated. Then, under the full heating of the external heating wire 22 and the internal heating wire 19, it is discharged through the second discharge port 20.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An internal spiral rotary kiln, comprising an outer kiln body (1), characterized in that: The inner side of the outer kiln body (1) is provided with an inner kiln body (2). A first spiral (3) is fixedly connected to the outer surface of the inner kiln body (2). An inner heating wire (19) is fixedly connected inside the inner kiln body (2). An outer heater (23) is fixedly connected to the upper part of the outer side of the outer kiln body (1). An outer heating wire (22) is fixedly connected inside the outer heater (23). A first rotating shaft (7) is fixedly connected to one end of the inner kiln body (2). A spiral shaft (8) is fixedly connected to the other end of the inner kiln body (2).

2. The internal spiral rotary kiln according to claim 1, characterized in that, A sealing ring (6) is fixedly connected to one side of the opening of the outer kiln body (1), and a kiln cover (11) is fixedly connected to the other side of the sealing ring (6). A second discharge port (20) is fixedly connected below the kiln cover (11).

3. The internal spiral rotary kiln according to claim 1, characterized in that, A first motor (13) is fixedly connected to the front of the first rotating shaft (7), and a first bracket (12) is fixedly connected to the outside of the first motor (13).

4. The internal spiral rotary kiln according to claim 1, characterized in that, A second spiral (9) is fixedly connected to the outside of the spiral shaft (8), and a feeding cylinder (4) is provided on the outside of the second spiral (9). A feed inlet (5) is fixedly connected above one side of the feeding cylinder (4), and a first discharge outlet (10) is fixedly connected below the other side of the feeding cylinder (4).

5. The internal spiral rotary kiln according to claim 1, characterized in that, Two driven main gears (24) are fixedly connected to the outer side of the outer kiln body (1).

6. The internal spiral rotary kiln according to claim 1, characterized in that, A driven gear (21) is fixedly connected to the middle of the outer side of the outer kiln body (1). A driving gear (16) is fixedly connected to the bottom side of the driven gear (21). A second rotating shaft (15) is fixedly connected to the inner side of the driving gear (16). A second motor (14) is fixedly connected to one side of the second rotating shaft (15). A second bracket (17) is fixedly connected to the bottom of the second motor (14).

7. The internal spiral rotary kiln according to claim 1, characterized in that, A third support (26) is provided below the spiral shaft (8).

8. The internal spiral rotary kiln according to claim 1, characterized in that, Two rows of fixed support legs (18) are evenly arranged on the lower side of the outer kiln body (1), and a driven auxiliary gear (25) is slidably and fixedly connected to the inner side of the fixed support legs (18).

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