Rotary cement kiln capable of rapidly heating

Abstract

The rotary cement kiln comprises a rotary kiln body, a heat preservation cover is installed on the outer side of the rotary kiln body, an installation ring is installed on the inner wall of the heat preservation cover, a connecting column is fixedly arranged on the inner wall of the installation ring, and an electric heating copper pipe is wound on the surface of the connecting column. A transmission pipe fitting is mounted between the mounting ring and the rotary kiln body, an interlayer groove is formed in the rotary kiln body, an inner cavity wall is arranged on the inner side of the interlayer groove, and a temperature transmission wall is integrally mounted on the surface of the inner cavity wall; the heat preservation cover is arranged outside the rotary kiln body, the mounting ring is mounted in the heat preservation cover, the electric heating copper pipe is arranged on the surface of the connecting column on the mounting ring, and the electric heating copper pipe is used for heating the interior of the heat preservation cover, so that heating of the rotary kiln body is accelerated, and the temperature rise of the rotary kiln body is accelerated through mutual combination of external heating and in-kiln heating; and the temperature rise curve is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of cement rotary kilns, in particular to a cement rotary kiln which can heat up quickly. Background Art

[0002] Cement: a powdery, hydraulic inorganic gelling material that forms a slurry after being stirred with water. It can harden in air or water, and can firmly bind materials such as sand and stone together. In the production and processing of cement, a rotary kiln is required for processing. Cement rotary kiln belongs to the category of building materials equipment and is a type of lime kiln. Rotary kilns can be divided into cement rotary kilns, metallurgical and chemical rotary kilns, and lime rotary kilns according to the materials they process. Cement rotary kilns are the main equipment in both dry and wet cement clinker production lines. Cement kilns are mainly used to calcine cement clinker and are divided into two categories: dry process cement kilns and wet process cement kilns.

[0003] During the calcination process of the existing cement rotary kiln, the temperature inside the cement kiln is raised by a temperature control system. However, the temperature rise rate is slow, resulting in an unstable temperature rise curve in the early stage. The temperature rise is slow and the temperature is prone to drop. As a result, the temperature curve is unstable when calcining cement clinker, affecting the calcination quality.

[0004] Therefore, those skilled in the art provide a cement rotary kiln that can heat up quickly to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to provide a cement rotary kiln capable of rapidly heating up, so as to solve the problem in the prior art that the existing cement rotary kiln has a slow heating up speed and is prone to temperature drop during the calcination process.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A cement rotary kiln capable of rapidly heating up comprises: a rotary kiln body, a heat-insulating cover mounted on the outside of the rotary kiln body, a mounting ring mounted on the inner wall of the heat-insulating cover, a connecting column fixedly mounted on the inner wall of the mounting ring, an electric heating copper tube wound around the surface of the connecting column, a conductive pipe mounted between the mounting ring and the rotary kiln body, an interlayer groove mounted inside the rotary kiln body, an inner cavity wall mounted on the inner side of the interlayer groove, a temperature transfer wall integrally mounted on the surface of the inner cavity wall, a heat-conducting plate mounted on the surface of the temperature transfer wall, a ceramic ball embedded in the surface of the heat-conducting plate, and a PLC controller mounted on the outside of the heat-insulating cover for control.

[0008] As a further solution of the present invention, the connecting column and the electric heating copper tube are arranged corresponding to each other, and the connecting column and the electric heating copper tube are distributed in a ring shape with respect to the symmetrical center line of the mounting ring.

[0009] As a further solution of the present invention, the conductive pipe is spirally arranged between the mounting ring and the heat insulation cover.

[0010] As a further solution of the present invention, the inner wall of the inner cavity wall and the outer wall of the temperature transfer wall are tightly fitted together, and the inner cavity wall and the temperature transfer wall form an integrated fixed structure.

[0011] As a further solution of the present invention, a plurality of ceramic balls are evenly distributed along the surface of the heat conducting plate, and the heat conducting plate is annularly arranged around the surface of the temperature transfer wall.

[0012] As a further solution of the present invention, a supporting wheel seat is installed below the rotary kiln body, a kiln head is installed at one end of the rotary kiln body, and a kiln tail is installed at the other end of the rotary kiln body, a feeding port is installed above the kiln head, a large gear is fixedly installed on the outside of the rotary kiln body, and a small gear is meshed with the bottom of the large gear.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. A heat preservation cover is installed on the outside of the rotary kiln body. A mounting ring is installed inside the heat preservation cover. An electric heating copper tube is installed on the surface of the connecting column on the mounting ring. The electric heating copper tube is used to heat the inside of the heat preservation cover, which helps to accelerate the temperature rise of the rotary kiln body. The combination of external heating and internal heating makes the temperature rise curve more stable. The heat preservation cover is set on the rotary kiln body to prevent the temperature from falling.

[0015] 2. A heat transfer wall is installed on the inner cavity wall of the rotary kiln body. The heat transfer wall and the inner cavity wall are made of heat-conducting materials, which is conducive to the rapid temperature rise inside the rotary kiln body. In combination with the heat transfer plate and ceramic balls on the surface of the heat transfer wall, the heat transfer plate and ceramic balls make the temperature of the heat transfer wall heat faster and more evenly, improve the heating efficiency, and avoid the temperature drop caused by slow heating in the early stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a cement rotary kiln that can heat up quickly.

[0017] Figure 2 The diagram is a schematic diagram of the structure of a rotary kiln body in a cement rotary kiln that can heat up quickly.

[0018] Figure 3 This is a schematic diagram of the internal structure of a rotary kiln body in a cement rotary kiln that can heat up quickly.

[0019] Figure 4 This is a schematic diagram of the structure of an installation ring in a cement rotary kiln that can quickly heat up.

[0020] In the figure: 1. Rotary kiln body; 2. Kiln tail; 3. Kiln head; 4. Feed port; 5. Insulation cover; 501. Mounting ring; 502. Connecting column; 503. Electric heating copper tube; 504. Conductive pipe fitting; 6. PLC controller; 7. Support roller seat; 8. Large gear; 9. Small gear; 10. Interlayer tank; 11. Inner cavity wall; 12. Temperature transfer wall; 13. Heat conduction plate; 14. Ceramic ball. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1 to 4 The embodiment of the present invention provides a cement rotary kiln capable of rapidly heating up, comprising: a rotary kiln body 1, a supporting wheel seat 7 being installed below the rotary kiln body 1, a kiln head 3 being installed at one end of the rotary kiln body 1, a kiln tail 2 being installed at the other end of the rotary kiln body 1, a material delivery port 4 being installed above the kiln head 3, a large gear 8 being fixedly installed on the outer side of the rotary kiln body 1, and a small gear 9 being meshed with and installed at the bottom of the large gear 8;

[0023] Specifically, the meshing structure between the large gear 8 and the small gear 9 is utilized to drive the rotary kiln body 1 to rotate via a driving device, and the material is fed into the interior of the rotary kiln body 1 through the feeding port 4 on the kiln head 3 .

[0024] An insulation cover 5 is installed on the outside of the rotary kiln body 1, and a mounting ring 501 is installed on the inner wall of the insulation cover 5. A connecting column 502 is fixedly installed on the inner wall of the mounting ring 501, and an electric heating copper tube 503 is wrapped around the surface of the connecting column 502. A conductive pipe 504 is installed between the mounting ring 501 and the rotary kiln body 1. The connecting column 502 and the electric heating copper tube 503 are arranged corresponding to each other, and the connecting column 502 and the electric heating copper tube 503 are distributed in a ring about the symmetrical center line of the mounting ring 501. The conductive pipe 504 is spirally arranged between the mounting ring 501 and the insulation cover 5.

[0025] Specifically, by setting the mounting ring 501, the mounting ring 501 is installed on the inner wall of the heat preservation cover 5, and the electric heating copper tube 503 is installed and positioned using the mounting ring 501 and the connecting column 502 fixed on the inner wall of the mounting ring 501. The electric heating copper tube 503 is distributed in an annular manner, and can be heated in an annular manner on the inner wall of the heat preservation cover 5, so that a certain temperature is maintained between the heat preservation cover 5 and the rotary kiln body 1, thereby avoiding temperature drop and improving the heat preservation effect.

[0026] The interior of the rotary kiln body 1 is provided with an interlayer groove 10, and the inner side of the interlayer groove 10 is provided with an inner cavity wall 11, the surface of the inner cavity wall 11 is integrally installed with a temperature transfer wall 12, and the surface of the temperature transfer wall 12 is installed with a heat conduction plate 13, and the surface of the heat conduction plate 13 is embedded with ceramic balls 14. The outer side of the heat insulation cover 5 is installed with a PLC controller 6 for control. The inner wall of the inner cavity wall 11 and the outer wall of the temperature transfer wall 12 are tightly fitted, and the inner cavity wall 11 and the temperature transfer wall 12 are an integrated fixed structure. Several ceramic balls 14 are evenly distributed along the surface of the heat conduction plate 13, and the heat conduction plate 13 is arranged around the wall along the surface of the temperature transfer wall 12. The temperature transfer wall 12 and the inner cavity wall 11 are an integrated structure. A heat conduction plate 13 and a ceramic ball 14 are provided on the temperature transfer wall 12. When the temperature inside the rotary kiln body 1 rises, the heat conduction plate 13 and the ceramic ball 14 on the surface of the temperature transfer wall 12 make the temperature of the temperature transfer wall 12 heat faster and more evenly, thereby improving the heating efficiency and facilitating faster heating.

[0027] The working principle of the present invention is as follows: when using the present invention, the material is fed into the interior of the rotary kiln body 1 by utilizing the feeding port 4 on the kiln head 3, the driving device drives the small gear 9 to rotate, and the meshing structure between the large gear 8 and the small gear 9 drives the rotary kiln body 1 to rotate. Secondly, when the temperature inside the rotary kiln body 1 rises, the temperature will be transferred to the inner cavity wall 11, the inner cavity wall 11 and the heat transfer wall 12 are in contact with each other, and the temperature is transferred to the heat transfer wall 12. The heat conduction plate 13 and the ceramic ball 14 are provided on the heat transfer wall 12. When the temperature inside the rotary kiln body 1 rises, the heat conduction plate 13 and the ceramic ball 14 on the surface of the heat transfer wall 12 make the temperature of the heat transfer wall 12 be heated faster and more evenly, thereby accelerating the heat transfer. The heating speed inside the rotary kiln body 1 is controlled by the PLC controller 6. The electric heating copper tube 503 on the connecting column 502 fixed on the inner wall of the mounting ring 501 inside the heat preservation cover 5 is heated and heated in a ring-shaped manner on the inner wall of the heat preservation cover 5. This maintains a certain temperature between the heat preservation cover 5 and the rotary kiln body 1 to avoid temperature drop. At the same time, the copper material used in the conductive pipe 504 is spirally arranged to distribute the temperature more evenly between the heat preservation cover 5 and the rotary kiln body 1. This helps the rotary kiln body 1 to heat up quickly while achieving heat preservation, avoiding too fast temperature drop that affects the calcination quality of cement clinker and stabilizing the temperature curve.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cement rotary kiln capable of rapidly heating up, characterized in that: include: A rotary kiln body (1) is provided. A heat-insulating cover (5) is installed on the outside of the rotary kiln body (1), and a mounting ring (501) is installed on the inner wall of the heat-insulating cover (5). A connecting column (502) is fixedly provided on the inner wall of the mounting ring (501), and an electric heating copper tube (503) is wound around the surface of the connecting column (502). A conducting pipe (504) is installed between the mounting ring (501) and the rotary kiln body (1). An interlayer groove (10) is provided inside the rotary kiln body (1), and an inner cavity wall (11) is provided on the inner side of the interlayer groove (10). A temperature transfer wall (12) is integrally installed on the surface of the inner cavity wall (11), and a heat-conducting plate (13) is installed on the surface of the temperature transfer wall (12). A ceramic ball (14) is embedded on the surface of the heat-conducting plate (13). A PLC controller (6) for control is installed on the outside of the heat-insulating cover (5).

2. A cement rotary kiln capable of rapidly heating up according to claim 1, characterized in that: The connecting column (502) and the electric heating copper tube (503) are arranged corresponding to each other, and the connecting column (502) and the electric heating copper tube (503) are distributed in a ring shape about the symmetrical center line of the installation ring (501).

3. A cement rotary kiln capable of rapidly heating up according to claim 1, characterized in that: The conductive pipe (504) is spirally arranged between the mounting ring (501) and the heat-insulating cover (5).

4. A cement rotary kiln capable of rapidly heating up according to claim 1, characterized in that: The inner wall of the inner cavity wall (11) and the outer wall of the heat transfer wall (12) are tightly fitted together, and the inner cavity wall (11) and the heat transfer wall (12) form an integrated fixed structure.

5. The cement rotary kiln capable of rapidly heating up according to claim 1, characterized in that: A plurality of ceramic balls (14) are evenly distributed along the surface of the heat conducting plate (13), and the heat conducting plate (13) is annularly arranged around the surface of the temperature transfer wall (12).

6. A cement rotary kiln capable of rapidly heating up according to claim 1, characterized in that: A supporting wheel seat (7) is installed below the rotary kiln body (1), a kiln head (3) is installed at one end of the rotary kiln body (1), and a kiln tail (2) is installed at the other end of the rotary kiln body (1), a material delivery port (4) is installed above the kiln head (3), a large gear (8) is fixedly installed on the outside of the rotary kiln body (1), and a small gear (9) is meshed with and installed at the bottom of the large gear (8).

Images