Ceramic inner cylinder of preheater for cement kiln

Abstract

The utility model belongs to the technical field of cement kiln preheating, and particularly relates to a ceramic inner cylinder of a preheater for a cement kiln, which comprises an inner cylinder main body, a first vacuum groove is arranged in the middle of the inner wall of the inner cylinder main body, and a plurality of second vacuum grooves are equidistantly arranged on the inner wall of the inner cylinder main body at the outer edge of the first vacuum groove. According to the utility model, the inner cylinder slides into the preheater for installation through the balls in the connecting holes, and during preheating, as the first vacuum grooves and the second vacuum grooves are formed in the inner wall of the inner cylinder main body, heat in the inner cylinder is not easy to dissipate, so that the heat in the inner cylinder is not easy to dissipate, and the service life of the inner cylinder is prolonged. And meanwhile, heat preservation cotton in a second vacuum groove enables the temperature to be stored inside, meanwhile, in the second vacuum groove in the outer edge, damage caused by too high temperature is not likely to happen, a third vacuum groove is formed in the supporting ring so that it can be prevented that heat is transmitted to the outer wall of the preheater, and workers are scalded, and therefore the practicability of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cement kiln preheating, and in particular relates to a ceramic inner cylinder of a cement kiln preheater. Background Art

[0002] Traditional cement rotary kiln belongs to the category of building materials equipment and is a type of lime kiln. According to the different materials processed, rotary kilns can be divided into cement rotary kiln, metallurgical chemical rotary kiln and lime rotary kiln. Cement rotary kiln is the main equipment of cement clinker dry process and wet process production line, and preheater is a structural equipment that must be used in cement rotary kiln. The interior of the preheater is generally loaded with an inner cylinder for the transfer of flue gas and materials;

[0003] In view of this, Chinese patent number CN205383904U discloses a ceramic inner cylinder for cement kiln preheater, which is easy to install, does not require special tools and lifting equipment, reduces labor intensity, can be installed in 1 to 2 days, and is easy to maintain, greatly prolongs the service life of the inner cylinder, and improves production efficiency. However, when using the inner cylinder of such a preheater, the preheater generally needs to be installed at one end of the cement kiln, and if the inner cylinder has a poor insulation effect, the internal temperature will be dissipated by transferring to the preheater, and at the same time, the outer wall of the preheater has a high temperature, which is easy to burn the staff, thereby reducing the practicality of the device.

[0004] In order to solve the above problems, the present application proposes a ceramic inner cylinder for a cement kiln preheater. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the utility model provides a ceramic inner cylinder of a preheater for a cement kiln, which has the characteristics of preventing heat dissipation and stable installation.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ceramic inner cylinder for a cement kiln preheater, comprising an inner cylinder body, the inner cylinder structure mainly being a device for preheating inside a preheater in a cement kiln, a first vacuum groove being provided in the middle of an inner wall of the inner cylinder body, and a plurality of second vacuum grooves being provided at equal distances on an inner wall of the inner cylinder body at the outer edge of the first vacuum groove;

[0007] The inner walls of the four second vacuum grooves are all fitted with heat-insulating cotton, the edges of the outer walls at both ends of the inner tube body are sleeved with support rings, and the inner walls of the two support rings are each provided with a third vacuum groove.

[0008] As a preferred embodiment of the ceramic inner cylinder of the cement kiln preheater of the utility model, a plurality of connection holes are evenly spaced in the middle of the outer walls of the two support rings.

[0009] As a preferred embodiment of the ceramic inner cylinder of the cement kiln preheater of the utility model, a ball is clamped on the inner wall of each of the connecting holes, and a plurality of protective rods are fixedly provided at equal distances on one side of the outer wall of one of the support rings.

[0010] As a preferred embodiment of the ceramic inner cylinder of the cement kiln preheater of the utility model, one end of each of the protective rods is fixedly connected to one side of the outer wall of another support ring, and the outer wall of the inner cylinder body is fixedly provided with a wear-resistant layer.

[0011] As a preferred embodiment of the ceramic inner cylinder of the cement kiln preheater of the utility model, a connecting base is fixedly provided on one side of the outer wall of the inner cylinder body, and a buffer groove is opened in the middle position of the inner wall of the connecting base.

[0012] As a preferred embodiment of the ceramic inner cylinder of the cement kiln preheater of the utility model, a plurality of support shafts are fixedly provided at equal distances on one side of the inner wall of the buffer tank, and one end of each support shaft is fixedly connected to the other side of the inner wall of the buffer tank, and a handle is sleeved on the outer wall of the connecting base, and the two sides of the inner wall of the handle are respectively connected to the two sides of the outer wall of the base for rotation, and a through hole is opened on one side of the handle.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By arranging an inner tube internal heat preservation protection structure on the device, and the structure is mainly composed of a first vacuum groove, a second vacuum groove, heat insulation cotton, a support ring, a third vacuum groove and a connecting hole, the inner tube is slid into the preheater for installation through the ball in the connecting hole. During preheating, because the inner wall of the inner tube body is provided with the first vacuum groove and the second vacuum groove, the heat in the inner tube is not easy to dissipate. At the same time, the heat insulation cotton in the second vacuum groove keeps the temperature inside. At the same time, it is not easy to be damaged due to excessive temperature in the second vacuum groove at the outer edge. At the same time, after installation, the third vacuum groove is provided inside the support ring to prevent heat from being transferred to the outer wall of the preheater to cause scalding of the staff, thereby improving the practicality of the device;

[0015] A lifting structure which facilitates the disassembly and assembly of the inner cylinder is provided on the device, and the structure is mainly composed of a connecting base, a buffer groove, a support shaft, a handle and a through hole. When in use, the handle is rotated through the through hole to rotate it out from the outer wall of the connecting base. The inner wall of the connecting base is provided with a buffer groove and filled with a support shaft so that it is not easily damaged when pulled. At the same time, the inner cylinder body is conveniently taken out of the preheater for maintenance and installation through the handle, thereby improving the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the inner cylinder in the utility model;

[0019] Figure 3 This is a schematic diagram of the connecting base structure in the utility model;

[0020] In the figure: 1. Inner tube body; 2. First vacuum groove; 3. Second vacuum groove; 4. Insulation cotton; 5. Support ring; 6. Third vacuum groove; 7. Connecting hole; 8. Ball bearing; 9. Protective rod; 10. Wear-resistant layer; 11. Connecting base; 12. Buffer groove; 13. Support shaft; 14. Handle; 15. Through hole. DETAILED DESCRIPTION

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

[0022] like Figure 1-3 As shown: a ceramic inner cylinder for a cement kiln preheater comprises an inner cylinder body 1, the inner wall of each connecting hole 7 is clamped with a ball 8, a plurality of protective rods 9 are fixedly provided at equal distances on one side of the outer wall of one supporting ring 5, one end of each protective rod 9 is fixedly connected to one side of the outer wall of another supporting ring 5, and a wear-resistant layer 10 is fixedly provided on the outer wall of the inner cylinder body 1.

[0023] Specifically, a first vacuum groove 2 is opened in the middle position of the inner wall of the inner tube body 1, and a plurality of second vacuum grooves 3 are opened at equal distances on the inner wall of the inner tube body 1 at the outer edge of the first vacuum groove 2, and thermal insulation cotton 4 is clamped on the inner walls of the four second vacuum grooves 3, and support rings 5 ​​are sleeved on the edges of the outer walls at both ends of the inner tube body 1, and a third vacuum groove 6 is opened on the inner walls of the two support rings 5, and a plurality of connecting holes 7 are opened at equal distances in the middle position of the outer walls of the two support rings 5.

[0024] Specifically, a connecting base 11 is fixedly provided on one side of the outer wall of the inner cylinder body 1, a buffer groove 12 is opened in the middle position of the inner wall of the connecting base 11, a plurality of support shafts 13 are fixedly provided on one side of the inner wall of the buffer groove 12 at equal distances, and one end of each support shaft 13 is fixedly connected to the other side of the inner wall of the buffer groove 12, a handle 14 is sleeved on the outer wall of the connecting base 11, and both sides of the inner wall of the handle 14 are respectively connected to both sides of the outer wall of the base 11 for rotation, and a through hole 15 is opened on one side of the handle 14.

[0025] Specific use: When using the ceramic inner cylinder of the cement kiln preheater in this design, it is first necessary to fix the support ring 5 at the upper end of the device on the outer wall of the inner cylinder body 1, and protect the inner cylinder by installing a protective rod 9 between the two support rings 5, so that the device can be used normally, and the outer wall of the inner cylinder body 1 is provided with a wear-resistant layer 10, so that its surface is not easy to wear during transportation or installation, and in this design, an inner cylinder internal thermal insulation protection structure composed of a first vacuum groove 2, a second vacuum groove 3, insulation cotton 4, a support ring 5, a third vacuum groove 6 and a connecting hole 7 is provided. When in use, the inner cylinder is slid into the preheater for installation through the ball 8 in the connecting hole 7. During preheating, because the inner wall of the inner cylinder body 1 is provided with the first vacuum groove 2 and the second vacuum groove 3, the heat in the inner cylinder is not easy to dissipate. At the same time, the second vacuum groove 3 The heat preservation cotton 4 keeps the temperature inside, and at the same time, it is not easy to be damaged due to excessive temperature in the second vacuum groove 3 on the outer edge. At the same time, after installation, a third vacuum groove 6 is opened inside the support ring 5 to prevent heat from being transferred to the outer wall of the preheater to cause scalding of the staff, thereby improving the practicality of the device. In addition, a lifting structure for convenient disassembly and assembly of the inner cylinder composed of a connecting base 11, a buffer groove 12, a support shaft 13, a handle 14 and a through hole 15 is provided on the device. When in use, the handle 14 is rotated through the through hole 15 to rotate it out of the outer wall of the connecting base 11, and the inner wall of the connecting base 11 is provided with a buffer groove 12 and filled with a support shaft 13 to prevent it from being damaged when pulled. At the same time, it is convenient to take out the inner cylinder body 1 from the preheater through the handle 14 for maintenance and installation, thereby improving the convenience of using the device.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A ceramic inner cylinder for a cement kiln preheater, comprising an inner cylinder body (1), the inner cylinder structure mainly being a device for carrying out preheating inside a preheater in a cement kiln, a first vacuum groove (2) being provided in the middle of an inner wall of the inner cylinder body (1), and a plurality of second vacuum grooves (3) being provided at equal distances on the inner wall of the inner cylinder body (1) at the outer edge of the first vacuum groove (2); It is characterized in that The inner walls of the four second vacuum grooves (3) are each provided with heat-insulating cotton (4), the edges of the outer walls at both ends of the inner cylinder body (1) are each provided with a support ring (5), and the inner walls of the two support rings (5) are each provided with a third vacuum groove (6).

2. The ceramic inner cylinder of the cement kiln preheater according to claim 1, characterized in that: A plurality of connection holes (7) are provided at equal distances in the middle of the outer walls of the two support rings (5).

3. The ceramic inner cylinder of the cement kiln preheater according to claim 2, characterized in that: A ball (8) is engaged on the inner wall of each connection hole (7), and a plurality of protective rods (9) are fixedly provided at equal distances on one side of the outer wall of one of the support rings (5).

4. The ceramic inner cylinder of the cement kiln preheater according to claim 3 is characterized in that: One end of each of the protective rods (9) is fixedly connected to one side of the outer wall of another support ring (5), and a wear-resistant layer (10) is fixedly provided on the outer wall of the inner cylinder body (1).

5. The ceramic inner cylinder of the cement kiln preheater according to claim 1, characterized in that: A connecting base (11) is fixedly provided on one side of the outer wall of the inner cylinder body (1), and a buffer groove (12) is provided in the middle of the inner wall of the connecting base (11).

6. The ceramic inner cylinder of the cement kiln preheater according to claim 5, characterized in that: A plurality of support shafts (13) are fixedly provided at equal distances on one side of the inner wall of the buffer groove (12), and one end of each support shaft (13) is fixedly connected to the other side of the inner wall of the buffer groove (12); a handle (14) is sleeved on the outer wall of the connecting base (11), and two sides of the inner wall of the handle (14) are rotatably connected to two sides of the outer wall of the connecting base (11); and a through hole (15) is provided on one side of the handle (14).

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