Rotary kiln pulverized coal preheating and conveying device

Abstract

The utility model discloses a rotary kiln pulverized coal preheating conveying device which structurally comprises a base and further comprises an installation shell, a driving mechanism and a pretreatment mechanism, the installation shell is fixedly arranged on the upper portion of the base, a discharging pipe is fixedly arranged on the lower portion of the installation shell and connected with the base in a penetrating mode, the driving mechanism is arranged outside the installation shell, and the pretreatment mechanism is arranged on the lower portion of the installation shell. The pretreatment mechanism is arranged in the mounting shell and comprises an air heater, a stirring roller and an overturning roller, the stirring roller is rotationally connected with the interior of the mounting shell, the overturning roller is rotationally connected with the interior of the discharging pipe, an air inlet is formed in the upper portion of the discharging pipe, and the air heater is in through connection with the air inlet. The utility model belongs to the field of pulverized coal conveying devices, and particularly relates to a rotary kiln pulverized coal preheating conveying device.

Description

Technical Field

[0001] The utility model belongs to the field of coal powder conveying devices, in particular to a rotary kiln coal powder preheating conveying device. Background Art

[0002] Cement rotary kiln belongs to the category of building materials equipment and is a type of lime kiln. According to the different materials processed, the rotary kiln 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. When the rotary kiln is working, it needs to use coal powder and other raw materials for heating treatment. When adding coal powder to the rotary kiln, the corresponding coal powder conveying device is required.

[0003] Coal powder tends to stick together into a block structure during long-term stacking, and tends to become damp when stored for a long time. Existing rotary furnace coal powder conveying devices mostly directly add coal powder into the rotary furnace, and do not pre-treat the coal powder that sticks into blocks and relatively moist coal powder, which can easily lead to uneven combustion during the operation of the rotary furnace and affect the working efficiency of the rotary furnace. Utility Model Content

[0004] The technical problem to be solved by the utility model is that coal powder that is bonded into blocks and relatively moist coal powder easily lead to uneven combustion.

[0005] In order to solve the above problems, the technical solution adopted by the utility model is as follows: the rotary kiln pulverized coal preheating and conveying device proposed in the utility model includes a base, a mounting shell, a driving mechanism and a pretreatment mechanism, the mounting shell is fixedly arranged on the upper part of the base, a discharge pipe is fixedly arranged on the lower part of the mounting shell, the driving mechanism is arranged on the outside of the mounting shell, the pretreatment mechanism is arranged on the inside of the mounting shell, the pretreatment mechanism includes a hot air blower, a stirring roller and a flip roller, the stirring roller is rotatably installed inside the mounting shell, the flip roller is rotatably installed inside the discharge pipe, an air inlet is opened on the upper part of the discharge pipe, and the hot air blower and the air inlet are through-connected.

[0006] Furthermore, the driving mechanism includes a motor, a driving sprocket, a driven sprocket and a chain, the motor is arranged on the outside of the mounting shell, the driving sprocket and the driven sprocket are rotatably connected to the outside of the mounting shell, the stirring roller is through-connected to the mounting shell, one end of the stirring roller is connected to the motor shaft, the other end of the stirring roller is fixedly connected to the driving sprocket, the flip roller is through-connected to the discharge pipe, the flip roller is fixedly connected to the driven sprocket, and the driven sprocket and the driving sprocket are connected via a chain transmission.

[0007] Furthermore, the air inlet is opened directly above the turning roller.

[0008] Furthermore, the lower part of the discharge pipe is configured as a sloped structure, a discharge port is provided at the connection between the discharge pipe and the mounting shell, and the discharge port is configured as a grid-like structure.

[0009] Furthermore, a funnel-shaped feed opening is provided on the upper portion of the installation shell.

[0010] The beneficial effects achieved by the utility model using the above structure are as follows:

[0011] 1. The rotary kiln coal powder preheating and conveying device proposed in this scheme can simultaneously control the stirring roller to stir the coal powder inside the separation installation shell and the turning roller to turn the coal powder falling in the discharge pipe through the motor. It is simple to operate and has low cost.

[0012] 2. The rotary kiln coal powder preheating and conveying device proposed in this scheme, by setting a pretreatment mechanism in the installation shell, first crushes and separates the coal powder to prevent the coal powder from sticking into a block structure and affecting the combustion in the rotary kiln, and then preheats the separated coal powder to increase the subsequent combustion efficiency of the coal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a first overall structural schematic diagram of the utility model;

[0014] Figure 2 It is a second overall structural schematic diagram of the utility model;

[0015] Figure 3 It is an overall cross-sectional schematic diagram of the utility model.

[0016] Among them, 1. base, 2. mounting shell, 201. feed port, 202. discharge pipe, 203. discharge port, 3. driving mechanism, 301. motor, 302. driving sprocket, 303. driven sprocket, 304. chain, 4. pretreatment mechanism, 401. hot air blower, 402. stirring roller, 403. turning roller, 404. air inlet.

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] like Figure 1 and Figure 3As shown, a rotary kiln pulverized coal preheating and conveying device proposed by the utility model includes a base 1, and also includes a mounting shell 2, a driving mechanism 3 and a pretreatment mechanism 4. The mounting shell 2 is fixedly arranged on the upper part of the base 1, and a discharge pipe 202 is fixedly arranged on the lower part of the mounting shell 2. The driving mechanism 3 is arranged outside the mounting shell 2, and the pretreatment mechanism 4 is arranged inside the mounting shell 2. The pretreatment mechanism 4 includes a hot air blower 401, a stirring roller 402 and a turning roller 403. The stirring roller 402 is rotatably installed inside the mounting shell 2, and the turning roller 403 is rotatably installed inside the discharge pipe 202. An air inlet 404 is opened on the upper part of the discharge pipe 202, and the hot air blower 401 and the air inlet 404 are through-connected.

[0020] like Figure 2 and Figure 3 As shown, the driving mechanism 3 includes a motor 301, a driving sprocket 302, a driven sprocket 303 and a chain 304, the motor 301 is arranged on the outside of the mounting shell 2, the driving sprocket 302 and the driven sprocket 303 are rotatably connected to the outside of the mounting shell 2, the stirring roller 402 is through-connected to the mounting shell 2, one end of the stirring roller 402 is axially connected to the motor 301, and the other end of the stirring roller 402 is fixedly connected to the driving sprocket 302, the flip roller 403 is through-connected to the discharge pipe 202, the flip roller 403 is fixedly connected to the driven sprocket 303, and the driven sprocket 303 and the driving sprocket 302 are transmission-connected via the chain 304.

[0021] like Figure 3 As shown, the air inlet 404 is opened directly above the turning roller 403, which is convenient for the hot air blower 401 to directly preheat the coal powder and blow it. The lower part of the discharge pipe 202 is set as a slope structure, and a discharge port 203 is provided at the connection between the discharge pipe 202 and the mounting shell 2. The discharge port 203 is set as a grid structure to prevent large pieces of coal powder from falling and reduce the flow of coal powder falling into the discharge pipe 202. A funnel-shaped feed port 201 is opened on the upper part of the mounting shell 2 to add coal powder to the inside of the mounting shell 2.

[0022] During specific use, the coal powder to be added is poured into the feed port 201, the motor 301 is started to rotate the stirring roller 402 to stir and separate the coal powder, so as to prevent the coal powder from sticking into a block structure and affecting the subsequent transportation to the rotary kiln for combustion. While the coal powder is crushed and separated, it enters the discharge pipe 202 after the flow reduction through the discharge port 203, and the hot air blower 401 is started. Under the control of the motor 301, the stirring roller 402 drives the active sprocket 302 to rotate. Under the transmission action of the chain 304, the driven sprocket 303 drives the flip roller 403 to rotate, and the coal powder falling in the discharge pipe 202 is stirred and flipped, so that it is more fully in contact with the hot air blown into the discharge pipe 202 by the hot air blower 401 through the air inlet 404, thereby increasing the drying thermal efficiency of the coal powder and increasing the subsequent combustion efficiency of the rotary kiln.

[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A rotary kiln coal powder preheating and conveying device, comprising a base, characterized in that: It also includes a mounting shell, a driving mechanism and a pre-treatment mechanism. The mounting shell is fixedly mounted on the upper part of the base, a discharge pipe is fixedly mounted on the lower part of the mounting shell, the driving mechanism is arranged outside the mounting shell, and the pre-treatment mechanism is arranged inside the mounting shell. The pre-treatment mechanism includes a hot air blower, a stirring roller and a flip roller. The stirring roller is rotatably mounted inside the mounting shell, and the flip roller is rotatably mounted inside the discharge pipe. An air inlet is opened on the upper part of the discharge pipe, and the hot air blower and the air inlet are through-connected.

2. A rotary kiln coal powder preheating and conveying device according to claim 1, characterized in that: The driving mechanism includes a motor, a driving sprocket, a driven sprocket and a chain, the motor is arranged on the outside of the mounting shell, the driving sprocket and the driven sprocket are rotatably connected to the outside of the mounting shell, the stirring roller is through-connected to the mounting shell, one end of the stirring roller is connected to the motor shaft, the other end of the stirring roller is fixedly connected to the driving sprocket, the turning roller is through-connected to the discharge pipe, the turning roller is fixedly connected to the driven sprocket, and the driven sprocket and the driving sprocket are connected through chain transmission.

3. A rotary kiln coal powder preheating and conveying device according to claim 2, characterized in that: The air inlet is arranged right above the turning roller.

4. A rotary kiln coal powder preheating and conveying device according to claim 3, characterized in that: The lower part of the discharge pipe is set as a slope structure, and a discharge port is provided at the connection between the discharge pipe and the mounting shell, and the discharge port is set as a grid structure.

5. A rotary kiln coal powder preheating and conveying device according to claim 4, characterized in that: A funnel-shaped feeding port is provided on the upper part of the installation shell.

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