A lignite drying device with self-feeding

Abstract

This invention provides a self-feeding lignite drying device, including a feeding assembly comprising a screw conveyor, a feed hopper, a support frame, a connecting buckle, a guide hopper, a distributing screw, a drive motor, a distributing hopper, a discharge pipe, and a mounting frame. The feed hopper is fixedly connected to the feed inlet of the screw conveyor. This invention uses a drive motor to rotate the distributing screw, which agitates the lignite particles in the distributing hopper, dispersing the particles in the center towards both ends of the screw and causing them to flow out through the discharge pipe. The lignite particles fall evenly onto the conveyor belt. Compared to existing technologies, this invention achieves automatic feeding of lignite particles through a screw conveyor. The combination of the distributing screw and the distributing hopper allows the lignite particles to fall evenly onto the surface of the conveyor belt, spreading them evenly. During drying, this ensures uniform heat transfer and improves the drying efficiency of the lignite particles.

Description

Technical Field

[0001] This utility model relates to a drying device, specifically a self-feeding lignite drying device, belonging to the technical field of drying devices. Background Technology

[0002] Pulverized coal, as the core fuel in the cement clinker calcination process, has crucial effects on production efficiency and environmental impact due to its efficiency and combustion characteristics. Faced with rising energy prices and increasingly stringent environmental requirements, the cement industry urgently needs to improve pulverized coal combustion efficiency and reduce fuel consumption to lower costs and enhance competitiveness. Pulverized coal originates from the processing of lignite particles, but lignite particles typically contain high moisture content. High-moisture lignite, after being transported to the coal mill system, severely affects the grinding effect, leading to a decrease in mill output and limiting the production capacity of the rotary kiln.

[0003] To address this issue, pre-drying of lignite particles is necessary. Pre-drying reduces the moisture content of the lignite, thereby increasing output during coal milling. Specifically, the lignite is dried in a drying furnace before grinding. This measure not only optimizes the coal powder preparation process but also helps improve the efficiency and environmental performance of the entire cement production line.

[0004] Existing dryers mostly rely on manual feeding when drying lignite powder, which is inefficient. More importantly, once the lignite particles are fed into the dryer, they are often difficult to spread evenly on the conveyor belt. This uneven distribution directly leads to uneven heat transfer, resulting in insufficient drying of the lignite particles due to insufficient heat contact, which seriously affects the overall drying efficiency of the lignite particles. Therefore, a self-feeding lignite drying device is proposed. Utility Model Content

[0005] In view of this, the present invention provides a self-feeding lignite drying device to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial option.

[0006] The technical solution of this utility model embodiment is implemented as follows: a self-feeding lignite drying device includes a feeding assembly, which includes a screw conveyor, a feeding hopper, a support frame, a connecting buckle, a guide hopper, a distributing screw, a drive motor, a distributing hopper, a discharge pipe, and a mounting frame.

[0007] The feed hopper is fixedly connected to the feed inlet of the screw conveyor. The screw conveyor is installed on the upper surface of the support frame via a connecting buckle. The guide hopper is fixedly connected to the upper surface of the distribution hopper. The discharge pipe is installed on the lower surface of the distribution hopper and communicates with the distribution hopper. One end of the shaft of the distribution screw is fixedly connected to the output shaft of the drive motor. The outer side wall of the distribution screw is attached to the inner side wall of the distribution hopper. The spiral directions of the two ends of the distribution screw are opposite. The distribution hopper is fixedly connected to the upper surface of the mounting frame.

[0008] More preferably, the other end of the shaft of the distributing screw is rotatably connected to the distributing hopper, and the drive motor is installed on one side of the distributing hopper.

[0009] More preferably, the position of the discharge port of the screw conveyor corresponds to the position of the guide hopper.

[0010] More preferably, a drying component is provided outside the feeding component, the drying component including a conveyor, a furnace body, an air distribution chamber, a combustion chamber, and an air distribution plate;

[0011] The furnace body is installed outside the conveyor, the air distribution chamber is installed on the upper surface of the furnace body and communicates with the furnace body, and the combustion chamber is installed on the upper surface of the air distribution chamber and communicates with the air distribution chamber.

[0012] More preferably, a burner is mounted on the front surface of the combustion chamber.

[0013] More preferably, a blower is installed on the upper surface of the combustion chamber.

[0014] More preferably, an air distribution plate is fixedly connected to the bottom of the inner wall of the air distribution chamber, and the air distribution chamber is located above the conveyor.

[0015] More preferably, the mounting bracket is installed on the upper surface of the conveyor frame, and the position of the discharge pipe corresponds to the position of the conveyor belt.

[0016] The present invention has the following advantages due to the adoption of the above technical solution:

[0017] This invention utilizes a screw conveyor to transport lignite particles. The screw conveyor feeds the lignite particles into a guide hopper, from where they fall into a distribution hopper. A drive motor rotates a distribution screw, which agitates the lignite particles in the distribution hopper, dispersing those in the center towards both ends of the screw. The particles then flow out through a discharge pipe, landing evenly on the conveyor belt. Compared to existing technologies, this invention achieves automatic feeding of lignite particles using a screw conveyor, improving work efficiency. Furthermore, the combination of the distribution screw and distribution hopper ensures that the lignite particles fall evenly onto the surface of the conveyor belt, spreading evenly. During drying, this allows for uniform heat transfer, improving the drying efficiency of the lignite particles.

[0018] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a structural diagram of the feeding assembly of this utility model;

[0022] Figure 3 This is a diagram of the material distribution spiral structure of this utility model;

[0023] Figure 4 This is a structural diagram of the drying component of this utility model;

[0024] Figure 5 This is a schematic diagram of the installation position of the air distribution plate of this utility model.

[0025] Reference numerals: 101, feeding assembly; 11, screw conveyor; 12, feed hopper; 13, support frame; 14, connecting buckle; 15, guide hopper; 16, distributing screw; 17, drive motor; 18, distributing hopper; 19, discharge pipe; 20, mounting frame; 301, drying assembly; 31, conveyor; 32, furnace body; 33, air distribution chamber; 34, blower; 35, combustion chamber; 36, burner; 37, air distribution plate. Detailed Implementation

[0026] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] like Figures 1-5 As shown, this utility model embodiment provides a self-feeding lignite drying device, including a feeding component 101, which is used to realize the automatic feeding of lignite particles.

[0029] The feeding assembly 101 includes a screw conveyor 11, a feeding hopper 12, a support frame 13, a connecting buckle 14, a guide hopper 15, a distributing screw 16, a drive motor 17, a distributing hopper 18, a discharge pipe 19, and a mounting frame 20.

[0030] The feed hopper 12 is fixedly connected to the feed inlet of the screw conveyor 11. The screw conveyor 11 is installed on the upper surface of the support frame 13 through the connecting buckle 14. The position of the screw conveyor 11 can be limited by the support frame 13 and the connecting buckle 14. The feed hopper 12 can be connected to the silo through the material pipe. When the screw conveyor 11 is working, the lignite particles in the feed hopper 12 enter the screw conveyor 11, and the screw conveyor 11 conveys the lignite particles, realizing automatic feeding of lignite particles.

[0031] The position of the discharge port of the screw conveyor 11 corresponds to the position of the guide hopper 15. The guide hopper 15 is fixedly connected to the upper surface of the distribution hopper 18. The discharge pipe 19 is installed on the lower surface of the distribution hopper 18 and communicates with the distribution hopper 18. The screw conveyor 11 conveys the lignite particles into the guide hopper 15, and then the lignite particles fall into the distribution hopper 18. The lignite particles in the distribution hopper 18 flow out from the discharge pipe 19.

[0032] One end of the rotating shaft of the distributing screw 16 is fixedly connected to the output shaft of the drive motor 17. The outer side wall of the distributing screw 16 is attached to the inner side wall of the distributing hopper 18. The spirals at both ends of the distributing screw 16 rotate in opposite directions. The distributing hopper 18 is fixedly connected to the upper surface of the mounting frame 20. The other end of the rotating shaft of the distributing screw 16 is rotatably connected to the distributing hopper 18. The drive motor 17 is installed on one side of the distributing hopper 18. The lignite particles conveyed by the screw conveyor 11 fall to the middle of the distributing hopper 18. At this time, the distributing screw 16 is driven to rotate by the drive motor 17. The distributing screw 16 agitates the lignite particles in the distributing hopper 18, causing the lignite particles in the middle to disperse to both ends of the distributing screw 16 and then flow out from the discharge pipe 19. This allows the lignite particles to fall evenly and spread evenly on the conveyor belt.

[0033] In one embodiment, a drying assembly 301 is provided outside the feeding assembly 101. The drying assembly 301 includes a conveyor 31, a furnace body 32, an air distribution chamber 33, a combustion chamber 35, and an air distribution plate 37.

[0034] The furnace body 32 is installed outside the conveyor 31. The air distribution chamber 33 is installed on the upper surface of the furnace body 32 and communicates with the furnace body 32. The combustion chamber 35 is installed on the upper surface of the air distribution chamber 33 and communicates with the air distribution chamber 33. The burner 36 is installed on the front surface of the combustion chamber 35, and the blower 34 is installed on the upper surface of the combustion chamber 35. During drying, the burner 36 burns in the combustion chamber 35 and generates a large amount of heat. Then the blower 34 blows the heat to the air distribution chamber 33. The hot air flows downward evenly and comes into contact with the lignite particles, thereby realizing the drying operation of the lignite particles.

[0035] In one embodiment, an air distribution plate 37 is fixedly connected to the bottom of the inner side wall of the air distribution chamber 33. The air distribution chamber 33 is located above the conveyor 31. The air distribution plate 37 has uniformly opened air distribution holes inside. Through the air distribution holes in the air distribution plate 37, hot air can flow evenly downward into the furnace body 32 and come into contact with the lignite particles on the surface of the conveyor belt, thereby improving the drying effect on the lignite particles.

[0036] In one embodiment, the mounting bracket 20 is mounted on the upper surface of the frame of the conveyor 31, and the position of the discharge pipe 19 corresponds to the position of the conveyor belt of the conveyor 31. The position of the distribution hopper 18 can be defined by the mounting bracket 20.

[0037] In operation, the screw conveyor 11 works, and the lignite particles in the feed hopper 12 enter the screw conveyor 11. The screw conveyor 11 transports the lignite particles to the guide hopper 15, and then the lignite particles fall into the distribution hopper 18. The drive motor 17 drives the distribution screw 16 to rotate, and the distribution screw 16 agitates the lignite particles in the distribution hopper 18, causing the lignite particles in the middle to disperse to both ends of the distribution screw 16. Then, the lignite particles flow out from the feed pipe 19 and fall evenly onto the conveyor belt of the conveyor 31. At the same time, the burner 36 and the blower 34 work. The burner 36 burns in the combustion chamber 35 to generate a large amount of heat. Then the blower 34 blows the heat to the air distribution chamber 33. The hot air comes into contact with the lignite particles on the conveyor belt after passing through the air distribution plate 37. The air distribution plate 37 can make the hot air flow evenly into the furnace body 32 and come into contact with the lignite particles, thereby improving the drying effect of the lignite particles.

[0038] Compared with the prior art, this utility model realizes automatic feeding of lignite particles by setting up a screw conveyor 11, which improves work efficiency. Through the cooperation of structures such as the distribution screw 16 and the distribution hopper 18, the lignite particles can fall evenly onto the surface of the conveyor belt, so that they can be evenly spread on the conveyor belt. During the drying operation, the heat can be evenly transferred, which improves the drying efficiency of lignite particles.

[0039] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A self-feeding lignite drying device, comprising a feeding assembly (101), characterized in that: The feeding assembly (101) includes a screw conveyor (11), a feeding hopper (12), a support frame (13), a connecting buckle (14), a guide hopper (15), a distributing screw (16), a drive motor (17), a distributing hopper (18), a discharge pipe (19), and a mounting frame (20); The feed hopper (12) is fixedly connected to the feed inlet of the screw conveyor (11). The screw conveyor (11) is installed on the upper surface of the support frame (13) through the connecting buckle (14). The guide hopper (15) is fixedly connected to the upper surface of the distribution hopper (18). The discharge pipe (19) is installed on the lower surface of the distribution hopper (18) and communicates with the distribution hopper (18). One end of the rotating shaft of the distribution screw (16) is fixedly connected to the output shaft of the drive motor (17). The outer side wall of the distribution screw (16) is attached to the inner side wall of the distribution hopper (18). The spiral directions of the two ends of the distribution screw (16) are opposite. The distribution hopper (18) is fixedly connected to the upper surface of the mounting frame (20).

2. The lignite drying device with self-feeding according to claim 1, characterized in that: The other end of the rotating shaft of the material distribution screw (16) is rotatably connected to the material distribution hopper (18), and the drive motor (17) is installed on one side of the material distribution hopper (18).

3. The lignite drying device with self-feeding according to claim 2, characterized in that: The position of the discharge port of the screw conveyor (11) corresponds to the position of the guide hopper (15).

4. The lignite drying device with self-feeding according to claim 1, characterized in that: The feeding assembly (101) is externally provided with a drying assembly (301), which includes a conveyor (31), a furnace body (32), an air distribution chamber (33), a combustion chamber (35), and an air distribution plate (37). The furnace body (32) is installed outside the conveyor (31), the air distribution chamber (33) is installed on the upper surface of the furnace body (32) and communicates with the furnace body (32), and the combustion chamber (35) is installed on the upper surface of the air distribution chamber (33) and communicates with the air distribution chamber (33).

5. The self-feeding lignite drying device according to claim 4, characterized in that: A burner (36) is mounted on the front surface of the combustion chamber (35).

6. The lignite drying device with self-feeding according to claim 5, characterized in that: A blower (34) is installed on the upper surface of the combustion chamber (35).

7. The self-feeding lignite drying device according to claim 4, characterized in that: The bottom of the inner wall of the air distribution chamber (33) is fixedly connected to an air distribution plate (37), and the air distribution chamber (33) is located above the conveyor (31).

8. The lignite drying device with self-feeding according to claim 4, characterized in that: The mounting bracket (20) is installed on the upper surface of the frame of the conveyor (31), and the position of the feed pipe (19) corresponds to the position of the conveyor belt of the conveyor (31).

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