Energy-saving and emission-reducing cement cellar

Abstract

The utility model discloses an energy-saving and emission-reducing cement cellar, which comprises a cellar barrel body, a waste heat recovery barrel, a driving device, a transfer hopper and a waste heat pipe, the upper side of the waste heat recovery barrel is connected with a conveying barrel, one side of the lower part of the conveying barrel is connected with the transfer hopper, a conveying auger is rotatably connected in the conveying barrel, and the conveying auger is connected with the waste heat pipe. One side of the waste heat recovery cylinder is connected with a circulating oil pump, an oil inlet pipe of the circulating oil pump is connected with the waste heat pipe, an oil outlet of the circulating oil pump is connected with a heating pipe, and the heating pipe is arranged in the conveying cylinder and connected with the waste heat pipe. The waste heat recycling device has the advantages that heat emitted by the cellar barrel body is absorbed through the waste heat pipe, then hot oil is conveyed into the heating pipe through the circulating oil pump, materials in the conveying barrel are heated through the heating pipe, the conveying barrel is obliquely arranged on the upper side of the waste heat recycling barrel, heat of the waste heat recycling barrel can be absorbed through the conveying barrel, and the materials are recycled. And materials in the conveying cylinder can be fully preheated.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, and in particular to an energy-saving and emission-reducing cement kiln. Background Technology

[0002] The rotary kiln is the main equipment in cement production. Raw meal powder is fed into the kiln body from the feed pipe at the high end of the kiln tail. Due to the inclination and slow rotation of the kiln body, the material undergoes a complex motion that involves both rolling along the circumference and moving from the higher end to the lower end along the axial direction. The raw meal undergoes decomposition, calcination and other processes in the kiln, and after being burned into cement clinker, it is discharged from the bottom end of the kiln body and enters the cooler for cooling.

[0003] An existing application (application number 202121655107.1) discloses an energy-saving and emission-reducing cement kiln. This kiln includes a kiln body and supporting rollers. A transfer hopper is connected to the inlet end of the kiln body, and a cooler is installed at the outlet end. A gear ring is fitted onto the outer wall of the kiln body, meshing with a drive wheel connected to a drive motor. The kiln also includes a waste heat recovery cylinder and a waste heat pipe forming a loop. The waste heat recovery cylinder is fitted onto the outer wall of the kiln body, with part of the waste heat pipe located inside the cylinder and another part inside the transfer hopper. The waste heat pipe is filled with a heat-conducting liquid, and a circulating oil pump is connected to its highest point. While this cement kiln can preheat the raw material in the transfer hopper, the limited time the raw material spends in the hopper results in poor preheating performance. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an energy-saving and emission-reducing cement kiln.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An energy-saving and emission-reducing cement kiln includes a kiln body, a waste heat recovery cylinder, a drive device, a transfer hopper, and a waste heat pipe. A conveying cylinder is connected to the upper side of the waste heat recovery cylinder, and the transfer hopper is connected to the lower side of the conveying cylinder. A conveying auger is rotatably connected inside the conveying cylinder. A circulating oil pump is connected to one side of the waste heat recovery cylinder. The oil inlet pipe of the circulating oil pump is connected to the waste heat pipe, and the oil outlet of the circulating oil pump is connected to a heating pipe. The heating pipe is located inside the conveying cylinder and is connected to the waste heat pipe.

[0007] Preferably, a motor is connected to one end face of the conveying cylinder, and the motor is used to drive the conveying auger.

[0008] Preferably, a spiral groove is provided on the inner side wall of the conveying cylinder, and the heating tube is provided in the spiral groove, with the heating tube spirally bent along the shape of the spiral groove.

[0009] Preferably, a pad is connected between the waste heat recovery cylinder and the conveying cylinder. The pad is a right-angled triangular plate, and the conveying cylinder is inclined.

[0010] Preferably, a feed hopper is connected to the upper side of the conveying cylinder.

[0011] The advantages of this utility model are as follows: The energy-saving and emission-reducing cement kiln provided by this utility model absorbs the heat emitted by the kiln body through the waste heat pipe, and then the hot oil is transported to the heating pipe through the circulating oil pump. The heating pipe heats the material in the conveying cylinder. Moreover, the conveying cylinder is inclined and set above the waste heat recovery cylinder. The conveying cylinder can absorb the heat of the waste heat recovery cylinder and can fully preheat the material in the conveying cylinder, resulting in a better preheating effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the principle structure of an energy-saving and emission-reducing cement kiln provided by this utility model;

[0013] Figure 2 This is a schematic diagram of the conveyor cylinder. Detailed Implementation

[0014] 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.

[0015] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0016] like Figure 1 As shown, the present invention provides an energy-saving and emission-reducing cement kiln, comprising a kiln body 1, a waste heat recovery cylinder 2, a drive device 3, a transfer hopper 4, and a waste heat pipe 5.

[0017] A conveying cylinder 6 is connected to the upper side of the waste heat recovery cylinder 2. A feeding hopper 8 is connected to the upper side of the conveying cylinder 6. Cement raw materials are conveyed into the conveying cylinder 6 through the feeding hopper 8. A transfer hopper 4 is connected to the lower side of the conveying cylinder 6. That is, the conveying cylinder 6 conveys the cement raw materials into the transfer hopper 4, and then the transfer hopper 4 conveys the raw materials into the kiln body 1.

[0018] A pad 2.1 is connected between the waste heat recovery cylinder 2 and the conveying cylinder 6. The pad 2.1 is a right-angled triangular plate. The conveying cylinder 6 is set at an inclination, with the lower side close to the transfer hopper 4, so that the material in the conveying cylinder 6 can slide downward into the transfer hopper 4. The conveying cylinder 6 is set on the upper side of the waste heat recovery cylinder 2. The conveying cylinder 6 can absorb the heat of the waste heat recovery cylinder 2 to preheat the raw material in the conveying cylinder 6.

[0019] like Figure 2 As shown, a conveying auger 7 is rotatably connected inside the conveying cylinder 6, and a motor 6.1 is connected to one end face of the conveying cylinder 6. The motor 6.1 is used to drive the conveying auger 7 to rotate, and the cement raw material is driven forward by the conveying auger 7.

[0020] A circulating oil pump 9 is connected to one side of the waste heat recovery cylinder 2. The oil inlet of the circulating oil pump 9 is connected to the waste heat pipe 5, and the oil outlet of the circulating oil pump 9 is connected to the heating pipe 10. The heating pipe 10 is set inside the conveying cylinder 6 and is connected to the waste heat pipe 5. The circulating oil pump 9 drives the hot oil to circulate in the heating pipe 10 and the waste heat pipe 5.

[0021] A spiral groove is provided on the inner side wall of the conveying cylinder 6, and a heating pipe 10 is provided in the spiral groove. The heating pipe 10 is spirally bent along the shape of the spiral groove, so that the heating pipe 4 can better preheat the cement raw material in the conveying cylinder 6.

[0022] The cement kiln absorbs the heat emitted by the kiln body through the waste heat pipe, and then the hot oil is transported to the heating pipe through the circulating oil pump. The heating pipe heats the material in the conveying cylinder. Moreover, the conveying cylinder is set at an angle above the waste heat recovery cylinder, so it can absorb the heat from the waste heat recovery cylinder and fully preheat the material in the conveying cylinder, resulting in a better preheating effect.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An energy-saving and emission-reducing cement kiln, comprising a kiln body (1), a waste heat recovery cylinder (2), a drive device (3), a transfer hopper (4), and a waste heat pipe (5), characterized in that: A conveying cylinder (6) is connected to the upper side of the waste heat recovery cylinder (2), and a transfer hopper (4) is connected to the lower side of the conveying cylinder (6). A conveying auger (7) is rotatably connected inside the conveying cylinder (6). A circulating oil pump (9) is connected to one side of the waste heat recovery cylinder (2). The oil inlet of the circulating oil pump (9) is connected to the waste heat pipe (5), and the oil outlet of the circulating oil pump (9) is connected to the heating pipe (10). The heating pipe (10) is set inside the conveying cylinder (6) and is connected to the waste heat pipe (5).

2. The energy-saving and emission-reducing cement kiln according to claim 1, characterized in that: A motor (6.1) is connected to one end face of the conveying cylinder (6), and the motor (6.1) is used to drive the conveying auger (7).

3. The energy-saving and emission-reducing cement kiln according to claim 1, characterized in that: A spiral groove is provided on the inner side wall of the conveying cylinder (6), and the heating tube (10) is provided in the spiral groove. The heating tube (10) is spirally bent along the shape of the spiral groove.

4. The energy-saving and emission-reducing cement kiln according to claim 1, characterized in that: A pad (2.1) is connected between the waste heat recovery cylinder (2) and the conveying cylinder (6). The pad (2.1) is a right-angled triangular plate, and the conveying cylinder (6) is set at an angle.

5. The energy-saving and emission-reducing cement kiln according to claim 1, characterized in that: A feed hopper (8) is connected to the upper side of the conveying cylinder (6).

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