Pneumatic spring cutting device for raw coal bunker

Abstract

The utility model relates to pneumatic spring cutting device of raw coal bunker, it includes raw coal bunker and air pressure system, air pressure system sets up in raw coal bunker outside, air pressure system includes air compressor and energy accumulator, air compressor entrance communicates with outside environment, air compressor export communicates with energy accumulator, the inside of raw coal bunker is provided with pneumatic spring nozzle, energy accumulator is away from the one end of air compressor and communicates with pneumatic spring nozzle, be provided with solenoid valve between pneumatic spring nozzle and energy accumulator, this device air pressure system is through compressed air, and the pressure is stored in the energy storage tank, and the pressure is released by solenoid valve and pushes the pneumatic spring nozzle to extend into raw coal bunker, and the coal and the wall are separated to solve the problem that raw coal bunker hangs wall possibly leads to coal shutdown.

Description

Technical Field

[0001] This utility model belongs to the technical field of raw coal bunker cleaning equipment, specifically relating to a pneumatic spring cutting device for raw coal bunkers. Background Technology

[0002] In industrial production processes such as thermal power generation and coal chemical industry, which use coal as fuel or raw material, raw coal bunkers are key equipment for storing and transporting coal. However, a common and thorny problem during the operation of raw coal bunkers is coal blockage and coal bridging inside the bunker.

[0003] The main cause of coal blockage and adhesion to the walls of raw coal bunkers is the high moisture content of the coal, which causes it to clump and accumulate within the bunker, hindering coal delivery. Currently, most methods involve manual hammering or using air cannons to knock the coal down and using long steel rods to poke it from the top of the bunker to reduce wall adhesion. However, these methods are labor-intensive, pose safety risks such as falls from heights during the clearing process, and have low clearing efficiency. In existing technologies, air cannons release relatively dispersed energy, covering a large area but with limited pressure; for particularly hard or highly adhesive coal blockages, their ability to break up the arch is sometimes insufficient. Summary of the Invention

[0004] The purpose of this utility model is to provide a pneumatic spring cutting device for raw coal bunkers to solve the problems mentioned in the background art.

[0005] The purpose of this utility model is achieved as follows: a pneumatic spring cutting device for raw coal bunkers, comprising a raw coal bunker and an air compressor system. The air compressor system is located outside the raw coal bunker and includes an air compressor and an accumulator. The air compressor inlet is connected to the external environment, and the air compressor outlet is connected to the accumulator. A pneumatic spring nozzle is installed inside the raw coal bunker. The end of the accumulator away from the air compressor is connected to the pneumatic spring nozzle. A solenoid valve is installed between the pneumatic spring nozzle and the accumulator.

[0006] Multiple sets of accumulators, pneumatic spring nozzles, and other mechanisms can be installed as needed to complete the comprehensive cleaning of the inner wall of the raw coal bunker.

[0007] A ball valve is installed between the air compressor outlet and the accumulator.

[0008] A manual door is provided between the accumulator and the solenoid valve.

[0009] A cylinder is provided on the side of the raw coal bunker. The pneumatic spring nozzle includes a sleeve, which is fixed inside the cylinder. A hexagonal head is provided at the end of the sleeve away from the cylinder, and a nozzle is provided at the end of the sleeve close to the cylinder. Exhaust holes are evenly arranged at the outer end of the nozzle.

[0010] An O-ring is provided between the nozzle and the sleeve. Multiple O-rings are provided.

[0011] A limiting groove is provided on the inner side of the sleeve, and a plug is provided on the outer side of the nozzle. The plug and the limiting groove are engaged with each other.

[0012] A spring is provided between the plug and the limiting groove.

[0013] The beneficial effects of this utility model are: The air compressor system compresses air to 0.6MPa in the accumulator tank, and then releases the pressure through a solenoid valve to push a pneumatic spring nozzle into the raw coal bunker to separate the sticky coal from the bunker wall. This solves the problem of coal blockage and machine shutdown that may be caused by the sticky coal on the bunker wall. Unlike the traditional knocking cleaning, this method reduces damage to the bunker wall.

[0014] The pneumatic spring nozzle releases compressed air through multiple air passages to form an aerodynamic cutter, which can accurately and powerfully cut and shatter the solid coal arch formed at the coal drop point, solving the problems of energy dispersion and insufficient impact force of traditional air cannons.

[0015] The nozzle extends only 0.2mm and is pulled back after operation, greatly reducing nozzle wear. During the pull-back process, a small amount of compressed air is sprayed out simultaneously, which will not cause the uniformly distributed air holes of the nozzle to become blocked. At the same time, the cutting surface is wider, and the efficiency of clearing coal blockage is higher.

[0016] This device can be operated remotely, reducing the risks associated with manual on-site inspections, hammering, and using steel bars to clear coal. The control of the solenoid valve enables remote and automatic operation, allowing for easy integration into a centralized control system. It can clear blockages on a timed or on-demand basis, thus improving the automation level of the entire coal conveying system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the pneumatic spring cutting device for raw coal bunkers according to this utility model.

[0018] Figure 2 This is a structural diagram of the pneumatic spring nozzle of the pneumatic spring cutting device for raw coal bunkers according to this utility model.

[0019] In the diagram: 1. Raw coal bunker; 2. Air compressor; 3. Pneumatic spring nozzle; 4. Accumulator; 5. Ball valve; 6. Solenoid valve; 7. Manual door; 8. Cylinder; 9. Casing; 10. Hexagonal head; 11. Nozzle; 12. Air passage; 13. Spring; 14. O-ring seal; 15. Limiting groove; 16. Plug. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Example 1 like Figure 1-2As shown, the pneumatic spring cutting device for raw coal bunker includes a raw coal bunker 1 and an air compressor system. The air compressor system is located outside the raw coal bunker 1 and includes an air compressor 2 and an accumulator 4. The inlet of the air compressor 2 is connected to the external environment, and the outlet of the air compressor 2 is connected to the accumulator 4. A pneumatic spring nozzle 3 is installed inside the raw coal bunker 1. The end of the accumulator 4 away from the air compressor 2 is connected to the pneumatic spring nozzle 3. A solenoid valve 6 is installed between the pneumatic spring nozzle 3 and the accumulator 4.

[0022] For better results, a ball valve 5 is installed between the outlet of the air compressor 2 and the accumulator 4.

[0023] For better performance, a manual door 7 is provided between the accumulator 4 and the solenoid valve 6.

[0024] The system is equipped with ball valve 5 and manual valve 7 to reliably isolate the air source and pneumatic spring nozzle during maintenance, ensuring the safety of maintenance personnel.

[0025] Before using this device, check the appearance of the air compressor 2, accumulator 4, pipelines, and pneumatic spring nozzle 3 for damage, tightness of connections, and absence of leaks. If coal feeding is obstructed or blocked, the device can be started in the control room. The air compressor 2 draws in air from the environment, compresses it to produce high-pressure gas, and delivers the high-pressure gas to the accumulator 4 through the outlet to charge and store energy. Once the pressure in the accumulator 4 reaches 0.6 MPa, the solenoid valve 6 is opened. The pressure released by the solenoid valve 6 pushes the pneumatic spring nozzle 3 to extend 0.2 mm into the bin wall. The pneumatic spring nozzle 3 releases the compressed air, separating the sticky coal from the bin wall.

[0026] Furthermore, depending on the degree of coal blockage, the operating frequency of the air compressor 2 can be changed, thereby altering the frequency at which the accumulator 4 releases compressed air, thus resolving different levels of coal blockage. The problem of coal adhering to the walls of the coal bunker can be solved by repeatedly pushing the pneumatic spring nozzle 3, greatly improving work efficiency and reducing personnel safety risks.

[0027] Example 2 like Figure 1-2 As shown, the pneumatic spring cutting device for raw coal bunker includes a raw coal bunker 1 and an air compressor system. The air compressor system is located outside the raw coal bunker 1 and includes an air compressor 2 and an accumulator 4. The inlet of the air compressor 2 is connected to the external environment, and the outlet of the air compressor 2 is connected to the accumulator 4. A pneumatic spring nozzle 3 is installed inside the raw coal bunker 1. The end of the accumulator 4 away from the air compressor 2 is connected to the pneumatic spring nozzle 3. A solenoid valve 6 is installed between the pneumatic spring nozzle 3 and the accumulator 4.

[0028] For better results, a ball valve 5 is installed between the outlet of the air compressor 2 and the accumulator 4.

[0029] For better performance, a manual door 7 is provided between the accumulator 4 and the solenoid valve 6.

[0030] The system is equipped with ball valve 5 and manual valve 7 to reliably isolate the air source and pneumatic spring nozzle during maintenance, ensuring the safety of maintenance personnel.

[0031] For better results, a cylinder 8 is provided on the side of the raw coal bunker 1. The pneumatic spring nozzle 3 includes a sleeve 9, which is fixed inside the cylinder 8. A hexagonal head 10 is provided at the end of the sleeve 9 away from the cylinder 8, and a nozzle 11 is provided at the end of the sleeve 9 close to the cylinder 8. Exhaust holes 12 are evenly arranged at the outer end of the nozzle 11.

[0032] For better performance, an O-ring 14 is provided between the nozzle 11 and the sleeve 9. The O-ring 14 ensures good airtightness between the nozzle 11 and the sleeve 9.

[0033] For better performance, a limiting groove 15 is provided on the inner side of the sleeve 9, and a plug 16 is provided on the outer side of the nozzle 11. The cooperation between the limiting groove 15 and the plug 16 ensures that the travel of the nozzle 11 is precise, preventing excessive extension and retraction, and protecting the internal structure.

[0034] For better results, a spring 13 is provided between the plug 16 and the limiting groove 15. The spring 13 is not only used for energy storage, but also automatically pulls the nozzle 11 back to its original position after the action is completed, closing the air passage 12 and effectively preventing coal dust in the bin from entering the air passage 12 and causing blockage and wear.

[0035] In another embodiment, the pneumatic spring nozzle 3 is preferably constructed as follows: after high-pressure compressed air enters the pneumatic spring nozzle 3, it first impacts the nozzle 11. Since a spring 13 is provided between the plug 16 and the limiting groove 15, under the pressure of the compressed air, the plug 16 overcomes the elastic force of the spring 13 and moves away from the limiting groove 15, thereby allowing the compressed air to be ejected at high speed through the air passage 12 on the nozzle 11. The high-speed ejected compressed air generates a strong impact and cutting force on the wall-mounted material in the raw coal bunker, cutting, crushing, or loosening the wall-mounted material to facilitate its smooth discharge. The pneumatic spring nozzle 3 structure of this device has the effect of a wider cutting surface, and also has the characteristics of preventing nozzle clogging, reducing wear, and extending service life.

Claims

1. A pneumatic spring cutting device for raw coal bunker, comprising a raw coal bunker and an air compression system, the air compression system is arranged outside the raw coal bunker, characterized in that: The air compressor system includes an air compressor and an accumulator. The air compressor inlet is connected to the external environment, and the air compressor outlet is connected to the accumulator. A pneumatic spring nozzle is installed inside the raw coal bunker. The end of the accumulator away from the air compressor is connected to the pneumatic spring nozzle. A solenoid valve is installed between the pneumatic spring nozzle and the accumulator.

2. The pneumatic spring cutting device for raw coal bunkers according to claim 1, characterized in that: A ball valve is installed between the air compressor outlet and the accumulator.

3. The pneumatic spring cutting device for raw coal bunkers according to claim 2, characterized in that: A manual door is provided between the accumulator and the solenoid valve.

4. The pneumatic spring cutting device for raw coal bunkers according to claim 1, characterized in that: A cylinder is provided on the side of the raw coal bunker. The pneumatic spring nozzle includes a sleeve, which is fixed inside the cylinder. A hexagonal head is provided at the end of the sleeve away from the cylinder, and a nozzle is provided at the end of the sleeve close to the cylinder. Exhaust holes are evenly arranged at the outer end of the nozzle.

5. The pneumatic spring cutting device for raw coal bunkers according to claim 4, characterized in that: An O-ring is provided between the nozzle and the sleeve.

6. The pneumatic spring cutting device for raw coal bunkers according to claim 5, characterized in that: The inner side of the sleeve is provided with a limiting groove, and the outer side of the nozzle is provided with a plug.

7. The pneumatic spring cutting device for raw coal bunkers according to claim 6, characterized in that: A spring is provided between the plug and the limiting groove.

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