Cement kiln tail low-resistance discharging structure

Abstract

The utility model discloses a cement kiln tail low-resistance blanking structure, which belongs to the field of cement production and comprises a kiln tail chute, a blanking component is arranged on the side wall of the kiln tail chute, the blanking component comprises a Y-shaped material pipe and a reducing material pipe, the Y-shaped material pipe is obliquely mounted on the side wall of the kiln tail chute, and the reducing material pipe is arranged on the side wall of the Y-shaped material pipe. Through cooperative use of all the devices, the silicon carbide anti-skinning microlite inner barrel is additionally arranged in the material pipe, a nanometer heat insulation material is inlaid and pasted between the silicon carbide microlite inner barrel and the discharging pipe outer shell, the skinning phenomenon of the discharging pipe can be reduced through microlite, and the discharging pipe can be prevented from being damaged. According to the utility model, scattering of materials entering the feed-end chamber and flying of materials on the discharge slope at the tail of the kiln can be effectively reduced, and the purposes of reducing system resistance, saving energy and reducing consumption are achieved.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, specifically a low-resistance material feeding structure for the kiln tail of a cement kiln. Background Technology

[0002] Cement is an important cementing material, made from raw materials such as limestone and clay through processes such as crushing, mixing, calcining, and grinding. When water is added, it can bind and harden with aggregates such as sand and stone to form strong artificial stone.

[0003] In the new dry-process cement clinker production process, raw meal powder is dried and preheated through various stages of preheaters. In the decomposition furnace, over 95% of the calcium carbonate is decomposed. The material then enters the final preheater cyclone separator for gas-solid separation. Finally, the material passes through the kiln tail flue and enters the rotary kiln for calcination. The kiln tail flue is the passageway connecting the pre-decomposition system and the clinker calcination system—two core pieces of equipment. The ventilation resistance in this area directly affects the stability and balance of airflow in the furnace and kiln systems of the calcination process.

[0004] However, in the current production process, the feed pipe of the last stage cyclone of the preheater is set too high in the kiln tail smoke chamber, and the material entering the kiln tail smoke chamber is scattered. The material entering the kiln tail smoke chamber through the two feed pipes is more likely to cause material impact and dust, which reduces the ventilation cross-sectional area of ​​the kiln tail smoke chamber and increases the resistance of the kiln tail smoke chamber, which is very detrimental to improving the efficiency of cement production.

[0005] Therefore, this utility model provides a low-resistance material feeding structure at the kiln tail of a cement kiln to solve the above-mentioned problems. Utility Model Content

[0006] This utility model provides a low-resistance material feeding structure at the kiln tail of a cement kiln, aiming to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A low-resistance material feeding structure for the kiln tail of a cement kiln includes a kiln tail chute, wherein a material feeding assembly is provided on the side wall of the kiln tail chute.

[0009] The feeding assembly includes a Y-shaped feed pipe and a variable diameter feed pipe. The Y-shaped feed pipe is installed obliquely on the side wall of the kiln tail chute, and the end of the variable diameter feed pipe is installed at the end of the Y-shaped feed pipe.

[0010] As a preferred technical solution of this application, the feeding assembly further includes a nano-heat insulation layer disposed on the inner wall of the Y-shaped feed tube and the variable diameter feed tube, and the inner wall of the nano-heat insulation layer is provided with a silicon carbide layer.

[0011] As a preferred technical solution of this application, a detector is installed on the outer wall of the variable diameter pipe, and an alarm is installed on the outer wall of the detector.

[0012] As a preferred technical solution of this application, the end of the variable diameter material pipe is fixedly sleeved with a flange for connecting the cyclone feed cylinder, and the end of the flange is provided with a groove for easy installation, and the number of the grooves is multiple.

[0013] As a preferred technical solution of this application, a connecting ring is installed on the outer wall of the kiln tail chute, and a connecting groove is opened at the end of the connecting ring.

[0014] As a preferred technical solution of this application, an installation ring is fixedly sleeved at the upper top of the kiln tail chute, and bolts are threadedly connected to the outer wall of the installation ring, and the number of bolts is several.

[0015] This invention involves installing a Y-shaped reducing feed pipe before the final-stage double-series cyclone separator feed pipe enters the kiln tail smoke chamber. The Y-shaped feed pipe then descends to the inclined chute position within the kiln tail smoke chamber at its connection point.

[0016] To prevent the accumulation of high-temperature materials and harmful components in the feed pipe, a silicon carbide anti-scabbing microcrystalline stone inner cylinder is added inside the feed pipe. Nano-insulation material is inlaid between the silicon carbide microcrystalline stone inner cylinder and the outer shell of the feed pipe. The use of microcrystalline stone can reduce the phenomenon of skin formation in the feed pipe. This utility model can effectively reduce the spillage of materials entering the kiln tail smoke chamber and the flying of materials on the kiln tail feed slope, thereby reducing system resistance and achieving the purpose of energy saving and consumption reduction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a low-resistance material feeding structure at the kiln tail of a cement kiln.

[0018] Figure 2 This is a schematic diagram of the nano-insulation layer in a low-resistance material feeding structure at the tail of a cement kiln.

[0019] Figure 3 This is a schematic diagram of a variable diameter feed pipe in a low-resistance feeding structure at the tail of a cement kiln.

[0020] Figure 4 This is a schematic diagram of the connecting ring in a low-resistance material feeding structure at the kiln tail of a cement kiln.

[0021] In the picture:

[0022] 1. Kiln tail chute; 2. Y-shaped feed pipe; 3. Variable diameter feed pipe; 4. Nano-insulation layer; 5. Silicon carbide layer; 6. Detector; 7. Alarm; 8. Flange; 9. Mounting groove; 10. Connecting ring; 11. Mounting ring; 12. Bolt. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This utility model provides a low-resistance material feeding structure for the kiln tail of a cement kiln, such as... Figures 1-4 As shown, the low-resistance material feeding structure at the kiln tail of a cement kiln includes a kiln tail chute 1, and a material feeding assembly is provided on the side wall of the kiln tail chute 1.

[0025] The feeding assembly includes a Y-shaped feed pipe 2 and a variable diameter feed pipe 3. The Y-shaped feed pipe 2 is installed at an angle on the side wall of the kiln tail chute 1, and the end of the variable diameter feed pipe 3 is installed at the end of the Y-shaped feed pipe 2.

[0026] The feeding assembly also includes a nano heat insulation layer 4 disposed on the inner wall of the Y-shaped feed tube and the variable diameter feed tube 3, and a silicon carbide layer 5 disposed on the inner wall of the nano heat insulation layer 4.

[0027] A detector 6 is installed on the outer wall of the reducing pipe 3, and an alarm 7 is installed on the outer wall of the detector 6.

[0028] Specifically, by setting up the feeding assembly, the cooperation of various components can improve cement production efficiency, reduce material flying at the kiln tail, and reduce ventilation resistance, thereby achieving the goal of energy saving and consumption reduction. By using a specific angle setting, the impact effect of cement is fully reduced during the feeding process, reducing dust generation. The silicon carbide layer 5 and nano heat insulation layer 4 added inside the Y-shaped feed pipe 2 and the variable diameter feed pipe 3 can improve the scaling of the feed pipe and extend the service life of the equipment.

[0029] The end of the reducing pipe 3 is fixedly sleeved with a flange 8 for connecting the cyclone feed cylinder. The end of the flange 8 is provided with a groove 9 for easy installation, and there are multiple grooves 9.

[0030] A connecting ring 10 is installed on the outer wall of the kiln tail chute 1, and a connecting groove is opened at the end of the connecting ring 10.

[0031] An installation ring 11 is fixedly sleeved at the top end of the kiln tail chute 1, and bolts 12 are threadedly connected to the outer wall of the installation ring 11. There are several bolts 12.

[0032] Specifically, the flange 8 and mounting groove 9 at the end of the reducing pipe 3 facilitate quick connection with external equipment, ensuring stability during cement feeding, improving production efficiency while reducing material loss. The mounting ring 11 and bolt 12 at the top of the kiln tail chute 1 facilitate connection with upper equipment, improving installation efficiency and enhancing production safety and stability.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A low-resistance material feeding structure for the kiln tail of a cement kiln, comprising a kiln tail chute (1), characterized in that: The side wall of the kiln tail chute (1) is provided with a feeding assembly; The feeding assembly includes a Y-shaped feed pipe (2) and a variable diameter feed pipe (3). The Y-shaped feed pipe (2) is installed obliquely on the side wall of the kiln tail chute (1), and the end of the variable diameter feed pipe (3) is installed at the end of the Y-shaped feed pipe (2).

2. The low-resistance material feeding structure at the kiln tail of a cement kiln according to claim 1, characterized in that: The feeding assembly also includes a nano heat insulation layer (4) disposed on the inner wall of the Y-shaped feed tube (2) and the variable diameter feed tube (3), and the inner wall of the nano heat insulation layer (4) is provided with a silicon carbide layer (5).

3. The low-resistance material feeding structure at the tail of a cement kiln according to claim 2, characterized in that: The outer wall of the variable diameter pipe (3) is equipped with a detector (6), and the outer wall of the detector (6) is equipped with an alarm (7).

4. The low-resistance material feeding structure at the tail of a cement kiln according to claim 3, characterized in that: The end of the variable diameter pipe (3) is fixedly sleeved with a flange (8) for connecting the cyclone feed cylinder. The end of the flange (8) is provided with a groove (9) for easy installation, and there are multiple grooves (9).

5. The low-resistance material feeding structure at the tail of a cement kiln according to claim 1, characterized in that: A connecting ring (10) is installed on the outer wall of the kiln tail chute (1), and a connecting groove is provided at the end of the connecting ring (10).

6. The low-resistance material feeding structure at the kiln tail of a cement kiln according to claim 1, characterized in that: The upper top of the kiln tail chute (1) is fixedly fitted with an installation ring (11), and the outer wall of the installation ring (11) is threaded with bolts (12), and the number of bolts (12) is several.

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