Coal dredging and discharging structure of coal feeder

Abstract

The utility model discloses a coal dredging and blanking structure of a coal feeder, which comprises a crushing unit and a coal dredging unit, a crushing roller pair of the crushing unit is positioned at the upper part of a blanking hopper of the coal feeder, and a coal dredging frame of the coal dredging unit is hinged with the side wall of the lower part of the blanking hopper through a first driving mechanism and a second driving mechanism; the second driving mechanism and the first driving mechanism are the same in structure, a rotating part of the coal dredging frame is hinged to a first connecting rod of the first driving mechanism, one end of a second connecting rod connected with the first connecting rod is hinged to a driving connecting rod, the other end of the second connecting rod is hinged to a third connecting rod, and the driving connecting rod is connected with a fixed rotating shaft. The fixed rotating shaft is connected with a coal conveying motor, a plurality of coal dredging rods are evenly arranged on the coal dredging frame, and a coal dredging net is arranged on the portion, between the coal dredging rods, of the coal dredging frame. By the adoption of the structure, the structure is simple, the coal dredging unit conducts coal screening and coal dredging work at the same time, and coal blockage of the discharging hopper of the coal feeder is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of coal dredging of coal feeders, in particular to a coal dredging and discharging structure of a coal feeder. Background Art

[0002] The existing coal bunker coal dropping system designed for the circulating fluidized bed boiler coal feeding system often has coal blockage and coal shed phenomenon, which causes a serious decline in boiler output and even causes the boiler to shut down due to fire suppression. Shed coal is caused by high humidity in coal. During the transportation process, it agglomerates, blocks the coal supply system and affects the combustion efficiency of the boiler. The moisture content and particle size of coal have a great influence on the fluidity of coal. Within a certain range, the higher the moisture content of coal, the greater the viscosity, the worse the fluidity, and the easier it is to stick; the smaller the particle size of coal, the less widely distributed, the better the compressibility, the stronger the agglomeration ability, and the worse the fluidity. The main factor affecting the fluidity of raw coal is the cohesiveness of coal, which is usually related to the moisture content of coal. When the moisture content of coal is high, it is easy for materials to pile up, bridge, and stick to the wall in the raw coal hopper and coal dropping pipe. After the boiler is shut down, unused raw coal in the coal bunker is stored for a long time. The coal bunker is not tightly sealed, and the stored coal comes into contact with the air and absorbs moisture in the surrounding environment, which will cause the raw coal to agglomerate in the coal bunker. Therefore, it is necessary to design a coal feeder unloading structure that can screen and dredge coal simultaneously. Utility Model Content

[0003] The utility model aims to provide a coal discharge structure of a coal feeder, which has a simple structure and a coal discharge unit that simultaneously performs coal screening and coal discharge work, thereby avoiding coal blockage in the discharge hopper of the coal feeder.

[0004] To achieve the above-mentioned purpose, the utility model provides a coal dispersing and discharging structure of a coal feeder, comprising a crushing unit and a coal dispersing unit, the crushing rollers of the crushing unit are located on the upper part of the coal feeder hopper, the coal dispersing frame of the coal dispersing unit is hinged to the lower side wall of the hopper through a first driving mechanism and a second driving mechanism, the second driving mechanism has the same structure as the first driving mechanism, the rotating part of the coal dispersing frame is hinged to the first connecting rod of the first driving mechanism, one end of the second connecting rod connected to the first connecting rod is hinged to the driving connecting rod, the other end of the second connecting rod is hinged to the third connecting rod, the driving connecting rod is connected to a fixed rotating shaft, the fixed rotating shaft is connected to a coal dispersing motor, a plurality of coal dispersing rods are evenly arranged on the coal dispersing frame, and a coal dispersing net is arranged on the coal dispersing frame between the coal dispersing rods.

[0005] Preferably, a driving wheel is provided at one end of the driving roller in the pair of pulverizing rollers, and the driving wheel is connected to the driving wheel of the pulverizing motor through a first synchronous belt, and the pulverizing motor is located on a mounting frame at the top of the lower hopper.

[0006] Preferably, a driven wheel is provided at one end of the driven roller in the pulverizing pair of rollers, the driven wheel and the driving wheel are located on the same side of the lower hopper, and the driven wheel and the driving wheel are connected via a second synchronous belt.

[0007] Preferably, the coal diversion motor is connected to the outer side wall of the lower part of the lower hopper, and the third connecting rod is hinged to the rotating rod inside the rotating groove of the coal diversion frame.

[0008] Preferably, the first connecting rod and the second connecting rod are an integrated structure, the first connecting rod is connected to the middle part of the second connecting rod, and the angle between the first connecting rod and the second connecting rod is 45-60°.

[0009] Preferably, the number of the rotating parts is two provided on one side of the coal diversion rack.

[0010] Preferably, two rotating grooves are provided on one side of the coal diversion rack.

[0011] Preferably, the number of the fixed rotating shaft and the number of the coal-draining motors are both two.

[0012] Preferably, the length of the coal diversion rod gradually increases from the outside to the inside on the coal diversion rack.

[0013] Therefore, the utility model adopts a coal discharge structure of a coal feeder with the above structure, which has a simple structure, and the coal discharge unit performs coal screening and coal discharge work at the same time, thereby avoiding coal blockage in the coal feeder discharge hopper.

[0014] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a front view of a coal discharge and material discharge structure of a coal feeder of the utility model;

[0016] Figure 2 It is a front view cross-sectional view of a coal discharge and material discharge structure of a coal feeder of the utility model;

[0017] Figure 3 This is a front view of a coal discharge unit of a coal discharge and material discharge structure of a coal feeder of the utility model;

[0018] Figure 4 It is a top view of a coal discharge structure of a coal feeder of the utility model at the coal discharge unit;

[0019] Figure 5 This utility model Figure 4 Enlarged view of point A in .

[0020] Reference numerals

[0021] 1. Crushing unit; 11. Crushing motor; 12. Active roller; 13. Active wheel; 2. Coal diversion unit; 21. First driving mechanism; 211. Rotating part; 212. First connecting rod; 213. Second connecting rod; 214. Driving connecting rod; 215. Third connecting rod; 216. Rotating groove; 217. Fixed rotating shaft; 218. Coal diversion motor; 22. Second driving mechanism; 23. Coal diversion rod; 24. Coal diversion net; 25. Coal diversion rack; 3. Lower hopper. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0023] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] Figure 1 This is a front view of a coal discharge and material discharge structure of a coal feeder of the utility model; Figure 2 It is a front view cross-sectional view of a coal discharge and material discharge structure of a coal feeder of the utility model; Figure 3 This is a front view of a coal discharge unit of a coal discharge and material discharge structure of a coal feeder of the utility model; Figure 4 It is a top view of a coal discharge structure of a coal feeder of the utility model at the coal discharge unit; Figure 5 This utility model Figure 4The enlarged view of A in the figure shows a coal feeding structure of a coal feeder, including a crushing unit 1 and a coal feeding unit 2, wherein the crushing rollers of the crushing unit 1 are located on the upper part of the coal feeder hopper 3. The coal feeding frame 25 of the coal feeding unit 2 is hinged to the lower side wall of the hopper 3 through the first driving mechanism 21 and the second driving mechanism 22, and the second driving mechanism 22 has the same structure as the first driving mechanism 21. The rotating part 211 of the coal feeding frame 25 is hinged to the first connecting rod 212 of the first driving mechanism 21, one end of the second connecting rod 213 connected to the first connecting rod 212 is hinged to the driving connecting rod 214, and the other end of the second connecting rod 213 is hinged to the third connecting rod 215. The driving connecting rod 214 is connected to the fixed rotating shaft 217, and the fixed rotating shaft 217 is connected to the coal feeding motor 218. A plurality of coal feeding rods 23 are evenly arranged on the coal feeding frame 25, and a coal feeding net 24 is arranged on the coal feeding frame 25 between the coal feeding rods 23.

[0025] The crushing unit 1 crushes the large pieces of coal entering the lower hopper 3, and the crushed coal continues to fall through the coal diversion unit 2 to the discharge port of the lower hopper 3. When the coal is discharged, the coal diversion unit 2 performs an elliptical motion, and the coal diversion frame 25 and the coal diversion rod 23 push the coal at the discharge port downward. At the same time, the coal diversion net 24 screens the coal, intercepts large particles of coal after agglomeration, and avoids coal accumulation at the discharge port.

[0026] The movement process of the coal diversion unit 2 is that the coal diversion motor 218 is started to drive the first driving mechanism 21 and the second driving mechanism 22 to move, and the first driving mechanism 21 and the second driving mechanism 22 drive the coal diversion frame 25 to make an elliptical motion. The working process of the second driving mechanism 22 is the same as the working process of the first driving mechanism 21. The fixed shaft 217 of the first driving mechanism 21 rotates under the drive of the coal diversion motor 218, and the second connecting rod 213 rotates along the rotating part 211 accordingly. The third connecting rod 215 rotates with the second connecting rod 213, thereby driving the coal diversion frame 25 to move.

[0027] A driving wheel 13 is provided at one end of the driving roller 12 in the crushing roller pair, and the driving wheel 13 is connected to the driving wheel of the crushing motor 11 through the first synchronous belt. The crushing motor 11 is located on the mounting frame at the top of the lower hopper 3. When the crushing motor 11 is started, the driving wheel 13 is driven to rotate through the first synchronous belt, thereby driving the driving roller 12 to rotate.

[0028] A driven wheel is provided at one end of the driven roller in the crushing pair of rollers. The driven wheel and the driving wheel 13 are located on the same side of the lower hopper 3, and the driven wheel and the driving wheel 13 are connected by a second synchronous belt. The driving wheel 13 drives the driven wheel to rotate through the second synchronous belt, and the driven wheel drives the driven roller to rotate. The driving roller 12 and the driven roller are provided with mutually meshing crushing teeth, and the driving roller 12 and the driven roller rotate relative to each other to crush the large pieces of coal that fall there.

[0029] The coal diversion motor 218 is connected to the lower outer wall of the lower hopper 3, and the third connecting rod 215 is hinged with the rotating rod inside the rotating groove 216 of the coal diversion frame 25. When the coal diversion motor 218 is started to drive the coal diversion frame 25 to move, the third connecting rod 215 rotates in the rotating groove 216 to limit the rotation range of the coal diversion frame 25.

[0030] The first connecting rod 212 and the second connecting rod 213 are an integrated structure, the first connecting rod 212 and the middle part of the second connecting rod 213 are connected, and the angle between the first connecting rod 212 and the second connecting rod 213 is 45-60 degrees. The first connecting rod 212 drives the rotating part 211 to move through the second connecting rod 213, and the setting of the inclination angle of the second connecting rod 213 and the first connecting rod 212 facilitates the movement of the rotating part 211 and the coal diversion frame 25.

[0031] There are two rotating parts 211 on one side of the coal diversion frame 25 . The rotating parts 211 are located on both sides of the coal diversion frame 25 . The two rotating parts 211 of the first driving mechanism 21 are symmetrically arranged relative to the main body of the coal diversion frame 25 .

[0032] There are two rotating grooves 216 on one side of the coal diversion frame 25 , and the two rotating grooves 216 of the first driving mechanism 21 are symmetrically arranged relative to the main body of the coal diversion frame 25 .

[0033] There are two fixed rotating shafts 217 and two coal-draining motors 218 . The fixed rotating shaft 217 is hinged to the bearing of the side wall of the lower hopper 3 . The lower hopper 3 is provided with a sealing ring at the fixed rotating shaft 217 .

[0034] The length of the coal diversion rod 23 on the coal diversion frame 25 gradually increases from the outside to the inside. The length setting ensures that the coal diversion frame 25 and the coal diversion rod 23 can move smoothly in the lower hopper 3, while the innermost coal diversion rod 23 extends downward to the vicinity of the discharge port to dredge coal.

[0035] Therefore, the utility model adopts a coal discharge structure of a coal feeder with the above structure, which has a simple structure, and the coal discharge unit performs coal screening and coal discharge work at the same time, thereby avoiding coal blockage in the coal feeder discharge hopper.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A coal feeding structure of a coal feeder, comprising a crushing unit and a coal feeding unit, wherein the crushing rollers of the crushing unit are located at the upper part of the coal feeder hopper, and characterized in that: The coal diversion frame of the coal diversion unit is hinged to the lower side wall of the lower hopper through a first driving mechanism and a second driving mechanism, the second driving mechanism has the same structure as the first driving mechanism, the rotating part of the coal diversion frame is hinged to the first connecting rod of the first driving mechanism, one end of the second connecting rod connected to the first connecting rod is hinged to the driving connecting rod, the other end of the second connecting rod is hinged to the third connecting rod, the driving connecting rod is connected to a fixed rotating shaft, the fixed rotating shaft is connected to a coal diversion motor, a plurality of coal diversion rods are evenly arranged on the coal diversion frame, and a coal diversion net is arranged on the coal diversion frame between the coal diversion rods.

2. The coal discharge structure of a coal feeder according to claim 1, characterized in that: A driving wheel is provided at one end of the driving roller in the pair of pulverizing rollers. The driving wheel is connected to the driving wheel of the pulverizing motor through a first synchronous belt. The pulverizing motor is located on a mounting frame at the top of the lower hopper.

3. The coal discharge structure of a coal feeder according to claim 2, characterized in that: A driven wheel is provided at one end of the driven roller in the pulverizing roller pair. The driven wheel and the driving wheel are located on the same side of the lower hopper, and the driven wheel and the driving wheel are connected through a second synchronous belt.

4. The coal discharge structure of a coal feeder according to claim 1, characterized in that: The coal diversion motor is connected to the outer side wall of the lower part of the lower hopper, and the third connecting rod is hinged to the rotating rod inside the rotating groove of the coal diversion frame.

5. The coal discharge structure of a coal feeder according to claim 1, characterized in that: The first connecting rod and the second connecting rod are an integrated structure, the first connecting rod is connected to the middle part of the second connecting rod, and the angle between the first connecting rod and the second connecting rod is 45-60 degrees.

6. The coal discharge structure of a coal feeder according to claim 1, characterized in that: The number of the rotating parts is two on one side of the coal diversion rack.

7. The coal discharge structure of a coal feeder according to claim 4, characterized in that: The number of the rotating grooves is two provided on one side of the coal diversion rack.

8. The coal discharge structure of a coal feeder according to claim 1, characterized in that: The number of the fixed rotating shaft and the number of the coal-draining motors are both two.

9. The coal discharge structure of a coal feeder according to claim 1, characterized in that: The length of the coal diversion rod gradually increases from the outside to the inside on the coal diversion frame.

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