CN201951893U - Multi-section eccentric raw coal bin - Google Patents

Abstract

The utility model discloses a multi-section eccentric raw coal bunker, which comprises a straight cylinder section, a circular platform section, an eccentric circular platform section and a movable section arranged sequentially from top to bottom; the straight cylinder section, the circular platform section and the eccentric circular platform section are connected by welding , the eccentric circular table segment and the movable segment are connected by a short link chain. In this multi-section eccentric raw coal bunker, when the raw coal is piled up in the eccentric circular platform section, the supporting reaction force generated by the raw coal is difficult to balance, and the arch is automatically broken to prevent coal blocking. The movable section is equipped with a vibrating motor. When a blockage occurs, the vibrating motor starts to cause a dislocation between the movable section and the fixed section above. The asymmetry of the angle of vibration wave transmission can destroy the balance force of material accumulation, which can effectively eliminate the raw coal bunker. of clogging. The lower part of the eccentric circular table section extends into the movable section to prevent raw coal leakage during vibration and meet environmental protection requirements.

Description

Multi-section eccentric raw coal bunker

technical field

The utility model relates to the field of coal powder preparation, in particular to a bunker for storing raw coal, in particular to a multi-section eccentric raw coal bunker with anti-blocking function.

Background technique

In industries such as thermal power generation, metallurgy, coal chemical industry and building materials, raw coal needs to be made into coal powder as fuel or raw material. In the process of coal powder preparation, in order to ensure the stability and reliability of the pulverization system, it is generally necessary to set up a certain number of raw coal bunkers to play a role of storage or buffer. The lower part of the raw coal bunker is generally a symmetrical round platform or edge platform structure, which is made of reinforced concrete or steel structure. The silo with a symmetrical structure, when the material is stored in the silo to a certain amount during the falling process, due to the pressure of the silo, the viscosity between the raw coal, and the balance force of accumulation, the lower part of the raw coal silo is prone to Phenomena such as hardening and arching will cause poor coal feeding, and in severe cases, it will cause coal breakage, cause the system to shut down, and make the pulverizing system unable to work normally. Due to the spontaneous combustion characteristics of coal, coal blocking can easily cause safety hazards. If the water content of the coal increases, the amount of pulverized coal increases, and the coal becomes cohesive, coal blockage is more likely to occur, resulting in having to stop production and clean it manually, which not only affects the system operation rate, but also increases the labor intensity of the workers.

Utility model content

In view of this, the technical problem to be solved by the utility model is to provide a multi-stage eccentric raw coal bunker with anti-blocking function.

In order to solve the above technical problems, the technical solution of the utility model is: a multi-section eccentric raw coal bunker, which includes a straight cylinder section, a circular platform section, an eccentric circular platform section and a movable section arranged in sequence from top to bottom; the straight cylinder section, the circular platform section , The eccentric circular table sections are connected by welding, and the eccentric circular table section and the movable section are connected by short chains.

The included angle between the hopper wall of the circular table section and the horizontal plane is ≥65°.

The eccentric circular platform section has an asymmetric structure, the angle between the side wall of the eccentric circular platform section and the horizontal plane is ≥ 65°, the angle between the opposite side warehouse wall and the horizontal plane is 90°, and the eccentric distance between the upper and lower bottom circles of the eccentric circular platform section ≥30% of the radius of the upper bottom circle of the eccentric circular table segment.

Upper lifting lugs are welded on the eccentric circular platform section.

The lower lifting lug is welded on the movable section.

A vibrating motor is housed on the movable section.

The lower part of the eccentric circular table section extends into the movable section 7 for a certain distance.

The outer side of the circular table section is connected with a raw coal bunker support structure.

The technical effect that the utility model reaches is as follows:

1. In the eccentric circular platform section, the asymmetric structure is adopted, and it is difficult to balance the supporting reaction force generated by the raw coal, which will destroy the balance force of material accumulation and break the arch, and the anti-arch effect is good.

2. The lower part of the eccentric circular table section is inserted into the movable section to prevent raw coal from leaking during vibration, so as to meet environmental protection requirements.

3. The movable section is connected with the eccentric circular table section through a short chain for hoisting, which has good flexibility;

4. The movable section is equipped with a vibrating motor. When the silo is blocked, the vibrating motor starts to cause a dislocation between the movable section and the fixed section above. The vibration effect is good, and the blockage of the silo can be effectively eliminated.

Description of drawings

Fig. 1 is a structural schematic diagram of the section eccentric raw coal bunker of the utility model.

The symbols in the figure are explained as follows:

1-Straight cylinder section 2-Circular table section 3-Eccentric circular table section 4-Up lug 5-Short link chain for lifting

6-Lower lifting lug 7-Active section 8-Straight barrel section silo wall 9-Raw coal bunker support structure

10-Wall 11-Wall

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, it is a multi-section eccentric raw coal bunker of the present utility model, which includes a total of four sections: straight cylinder section 1, circular platform section 2, eccentric circular platform section 3, and movable section 7 from top to bottom; straight cylinder section 1 and circular platform section 2. The eccentric circular table sections 3 are connected by welding, and the eccentric circular table section 4 and the movable section 7 are connected by short chains.

The straight cylinder section 1 accepts the raw coal added from the outside, and its lower part is a circular platform section 2 with a tapered circular table surface, and the circular platform section 2 is provided with a raw coal bunker support structure 9 .

The angle between the bin wall 10 of the circular frustum section 2 and the horizontal plane is ≥65°. The eccentric circular table section 3 has an asymmetric structure, the angle between the side wall of the eccentric circular table section 4 and the horizontal plane is ≥65°, the angle between the opposite side wall 11 and the horizontal plane is 90°, and the upper and lower bottom circles of the eccentric circular table section 3 The eccentric distance between them is greater than 30% of the radius of the upper bottom circle of the eccentric circular table segment. In the lower part of the raw coal bunker where coal is easy to be blocked, the eccentric circular table section 3 with an asymmetric structure is adopted. When the raw coal is piled up to the bottom, the supporting reaction force generated by the raw coal is difficult to balance and the arch is automatically broken.

The upper lug 4 is welded on the eccentric circular platform section 3, and the lower lifting lug 6 is welded on the movable section 7. The movable section 7 is connected with the eccentric circular platform section 3 by a short link chain 5 for lifting, which can enhance flexibility.

A vibrating motor is housed on the movable section 7, which is not shown in the figure. When blockage occurs, the vibrating motor starts to cause dislocation between the movable section 7 and the upper fixed section. The asymmetry of the vibration wave transmission angle is very obvious to destroy the balance of raw coal accumulation, which can effectively eliminate the blockage of the silo.

The lower part of the eccentric circular platform section 3 extends into the movable section 7 for a distance to prevent raw coal from leaking during vibration, to prevent pollution, and to play the effect of environmental protection.

In order to make it easier for operators to grasp the material level of raw coal, a raw coal bunker support structure 9 is provided outside the round platform section 2. The raw coal bunker is supported on the platform by an electronic scale. Raw coal material level is measured by gravimetric method, and the material level measurement is reliable.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model.

Claims (8)

1. A multi-section eccentric raw coal bunker, characterized in that it includes a straight cylinder section, a circular platform section, an eccentric circular platform section and a movable section arranged successively from top to bottom; the straight cylinder section, the circular platform section, and the eccentric circular platform section are connected by welding , the eccentric circular table segment and the movable segment are connected by a short link chain. 2. The multi-stage eccentric raw coal bunker according to claim 1, characterized in that, the included angle between the hopper wall of the circular platform section and the horizontal plane is ≥65°. 3. The multi-stage eccentric raw coal bunker according to claim 2, wherein the eccentric circular platform section is an asymmetric structure, the angle between the side wall of the eccentric circular platform section and the horizontal plane is ≥65°, and the opposite side wall and the horizontal plane The included angle is 90°, and the eccentric distance between the upper and lower bottom circles of the eccentric circular platform section is greater than or equal to 30% of the radius of the upper bottom circle of the eccentric circular platform section. 4. The multi-section eccentric raw coal bunker according to claim 1, characterized in that, upper lifting lugs are welded on the eccentric circular platform section. 5. The multi-section eccentric raw coal bunker according to claim 1, characterized in that, the movable section is welded with lower lifting lugs. 6. The multi-stage eccentric raw coal bunker according to claim 1, wherein a vibrating motor is installed on the movable section. 7. The multi-stage eccentric raw coal bunker according to claim 1, characterized in that, the lower part of the eccentric circular table section extends into the movable section (7) for a certain distance. 8. The multi-section eccentric raw coal bunker according to claim 1, characterized in that, the outer side of the circular platform section is connected with a raw coal bunker support structure. the

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