Continuous air supply device for coke oven charging dust removal

Abstract

The utility model discloses a kind of coke oven coal charging dust removal's continuous air supply device, it is related to coke oven coal charging dust removal technical field.The device includes bunker, dust suction coil pipe, suction pipe, venturi, blowing pipe, compressor, gas holder, flexible connecting pipe and ash pipe.H-shaped support is equipped at ash pipe bottom, outer two ends are equipped with slide bar, slide bar is slidably penetrated in the upper portion both sides of support, and spring is sleeved.Ash pipe is equipped with joint swing subassembly inside, including mounting bracket, shaft, turbofan and eccentric wheel, and " swing+vibration " double dust cleaning mechanism is formed by cooperation of symmetrically arranged ejector rod and its dome bulge.Compressor top is equipped with pressure sensor, when detecting that air pressure fluctuation exceeds 5%, automatically start gas holder to supplement air pressure.Dust suction port is opened in the bottom of dust suction coil pipe, realize omnibearing dust suction.The device solves the problem of unstable air supply and pipeline dust accumulation in the prior art, has the advantages of stable air supply, self-cleaning, energy saving and environmental protection, and has broad industrial application prospect.

Description

Technical Field

[0001] This utility model relates to the technical field of coke oven production equipment, and in particular to a continuous gas supply device for coke oven coal charging and dust removal. Background Technology

[0002] Coke oven charging is a crucial step in coking production and one of the most dust-polluting processes. During charging, large amounts of coal dust are dispersed under high temperatures, severely impacting the workshop environment and surrounding air quality, and posing a threat to the health of operators.

[0003] Currently, dust removal in coke oven charging mainly employs traditional technologies such as bag filters, electrostatic precipitators, and wet scrubbers. These technologies have revealed several shortcomings in practical applications: First, the gas supply system suffers from poor stability, especially during long-term operation, with significant fluctuations in compressor output pressure leading to unstable dust removal efficiency. Second, dust easily accumulates on the inner walls of the piping system; as operating time increases, the dust layer thickens, increasing airflow resistance and gradually reducing dust removal efficiency. Third, traditional dust removal equipment is complex in structure, energy-intensive, and requires frequent maintenance, especially in the harsh environment of coking plants with high temperatures and high dust concentrations, resulting in high equipment failure rates and short service lives. Studies have shown that after 1000 hours of continuous operation, the dust removal efficiency of traditional dust removal devices decreases by an average of 25-30%, requiring shutdown for maintenance and cleaning, severely impacting production continuity and economic benefits. Faced with these problems, traditional technologies often resort to increasing power input or maintenance frequency, lacking innovative designs that fundamentally solve the issues.

[0004] With the promotion of intelligent manufacturing and green production concepts, coke oven coal charging dust removal technology is developing towards automation, energy saving, and long-term efficiency. Industry experts generally believe that future dust removal devices should possess the following characteristics: first, a stable and reliable gas supply system capable of maintaining stable dust removal performance under fluctuating operating conditions; second, a pipeline design with self-cleaning function to reduce or eliminate dust accumulation; and third, intelligent monitoring and control to achieve self-diagnosis and adaptive adjustment of the device. Existing technologies still suffer from high costs and poor adaptability, making it difficult to meet the actual needs of coking enterprises. Therefore, developing a coke oven coal charging dust removal device that combines stable gas supply, self-cleaning function, and a simple and reliable structure has significant theoretical and practical value. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a continuous gas supply device for coal charging and dust removal in coke ovens.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A continuous gas supply device for dust removal during coke oven charging includes a silo, a dust suction coil at the bottom outlet of the silo, an air suction pipe at the top of the dust suction coil, a venturi tube connected to the end of the air suction pipe, an air blowing pipe at the input end of the venturi tube, a compressor at the input end of the air blowing pipe, an air storage tank on one side of the compressor, the air storage tank being connected to the air blowing pipe via a pipe, a flexible connecting pipe at the end of the venturi tube, an ash discharge pipe at the end of the flexible connecting pipe, a support at the bottom of the ash discharge pipe in an "H" shape, sliding rods at both ends of the ash discharge pipe slidingly through the upper sides of the support, and a combined swing assembly inside the ash discharge pipe for controlling its sliding.

[0008] The above technical solutions integrate dust removal, air supply, and self-cleaning functions into a complete system, achieving synergistic effects and avoiding compatibility issues between separate devices. The combined design of the compressor and air tank forms a complementary system, ensuring a continuous and stable air supply. This solves the problem of decreased dust removal efficiency caused by unstable air supply during long-term operation of traditional devices. The use of a venturi tube to generate negative pressure, combined with the dust suction coil design, creates a powerful and stable dust suction effect, eliminating the need for additional vacuum pumps and other equipment. This simplifies the system structure and reduces energy consumption and maintenance costs. The H-shaped support and sliding rod design give the device good stability and adaptability, enabling it to cope with vibrations during coke oven coal charging and different working environments, ensuring stable operation under various conditions. The overall layout is compact and reasonable, occupying little space, making it easy to install and use in limited coke oven operating space without interfering with normal production operations.

[0009] Preferably, the combined oscillating assembly includes a mounting bracket disposed inside the ash discharge pipe, a rotating shaft is inserted into the center of the mounting bracket, a turbo fan is coaxially disposed at the end of the rotating shaft near the air blowing pipe, and an eccentric wheel is disposed at the end of the rotating shaft away from the turbo fan.

[0010] Through the above technical solutions, the turbofan automatically drives the rotating shaft and eccentric wheel using airflow energy, eliminating the need for an additional motor or power source. This achieves efficient energy utilization, reduces energy consumption and failure rate. The rotating shaft transmits the turbofan's rotational motion to the eccentric wheel, realizing the conversion from rotational motion to eccentric motion. This provides a power source and motion basis for the oscillation of the ash discharge pipe. This self-driving mechanism works automatically with the operation of the dust removal system, requiring no special start-up or control, reducing operational steps and improving the system's reliability and automation level.

[0011] Preferably, the inner wall of the ash discharge pipe is also symmetrically provided with top rods, and the ends of the top rods are all provided with dome protrusions, which slide against the curved surface of the end of the eccentric wheel.

[0012] Through the above technical solutions, the special cooperation between the top rod and the eccentric wheel not only generates macroscopic oscillation but also microscopic vibration, forming a dual dust removal mechanism of "oscillation + vibration". This significantly improves the dust removal efficiency of the inner wall of the ash discharge pipe. The symmetrically arranged top rods ensure that the force generated by the eccentric wheel is evenly distributed, avoiding system imbalance that may be caused by unilateral force, ensuring smooth oscillation of the ash discharge pipe, and reducing mechanical wear. The sliding contact design between the dome protrusion and the curved surface at the end of the eccentric wheel reduces contact stress and wear, while generating an ideal vibration frequency, thus improving the dust removal effect.

[0013] Furthermore, springs are fitted onto the sliding rods near the inner wall of the support and the outer wall of the ash discharge pipe.

[0014] Through the above technical solution, the elastic potential energy storage and release characteristics of the spring enable the ash discharge pipe to automatically return to its original position after swinging to one side, achieving continuous reciprocating swing without the need for an additional reset mechanism.

[0015] Furthermore, a pressure sensor is also installed on top of the compressor.

[0016] Through the above technical solutions: the pressure sensor can monitor the output air pressure of the compressor in real time, providing accurate pressure data for the system, which is the basis for achieving precise control. Based on the sensor data, the control system can intelligently judge the working status of the compressor. When the air pressure fluctuation is detected to exceed the preset threshold, the air tank is automatically started to replenish the air pressure to ensure stable operation of the system.

[0017] Preferably, the bottom of the vacuum coil has a number of vacuum ports.

[0018] Through the above technical solutions: the setting of multiple dust suction ports achieves 360° all-round dust suction, expands the dust removal coverage, ensures that the dust around the bottom discharge port of the silo can be fully absorbed, and the multiple dust suction ports disperse the airflow, making the airflow speed of each dust suction port moderate, avoiding material disturbance that may be caused by excessive airflow, while ensuring the dust suction effect.

[0019] The beneficial effects of this utility model are as follows:

[0020] 1. This utility model, through the complementary design of the compressor and the air tank, combined with real-time monitoring by a pressure sensor, forms a closed-loop control system. When the compressor pressure fluctuation exceeds a 5% threshold, the system automatically activates the air tank to replenish the pressure, ensuring the long-term stable operation of the dust removal system. Simultaneously, the unique "oscillation + vibration" dual dust removal mechanism, through the combination of macroscopic oscillation and microscopic vibration generated by the eccentric wheel driving the push rod, effectively prevents dust accumulation on the inner wall of the ash discharge pipe. This allows the system to maintain a dust removal efficiency of over 95% even after more than 3000 hours of continuous operation, significantly reducing maintenance frequency and costs, and improving equipment reliability and service life.

[0021] 2. This invention fully utilizes the energy of the airflow itself to drive the oscillating component, eliminating the need for an additional power source and achieving highly efficient energy utilization. Dust removal is achieved by generating negative pressure through a venturi tube, eliminating the need for a traditional vacuum pump and reducing energy consumption and carbon emissions. Simultaneously, the combined design of the H-shaped support, slide bar, and spring gives the device excellent stability and adaptability, enabling reliable operation in the high-temperature, high-dust, and high-vibration environment of a coking plant. Multiple suction ports at the bottom of the suction coil achieve 360° all-around dust collection, improving the system's adaptability to different working conditions. This makes it suitable not only for coke oven coal charging processes but also for similar dust removal scenarios in industries such as metallurgy, mining, and building materials, significantly improving the working environment, protecting worker health, and yielding significant social and economic benefits.

[0022] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a continuous gas supply device for dust removal during coke oven charging, as proposed in this utility model.

[0024] Figure 2 This is a top view schematic diagram of a continuous gas supply device for dust removal during coke oven charging, as proposed in this utility model.

[0025] Figure 3 This is a schematic diagram of the combined swing assembly structure of a continuous gas supply device for coke oven coal charging and dust removal proposed in this utility model.

[0026] Figure 4 This utility model proposes a continuous gas supply device for dust removal during coke oven charging. Figure 3 A magnified schematic diagram of the local structure at point A.

[0027] In the diagram: 1. Hopper; 2. Dust collection coil; 21. Dust collection port; 3. Suction pipe; 4. Venturi tube; 5. Air blowing pipe; 6. Compressor; 7. Air tank; 8. Flexible connecting pipe; 9. Ash discharge pipe; 10. Mounting bracket; 11. Shaft; 12. Turbine fan; 13. Eccentric wheel; 14. Bracket; 15. Slide rod; 16. Spring; 17. Top rod; 171. Dome protrusion; 18. Pressure sensor. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Example 1

[0030] Overall structure

[0031] like Figure 1 and Figure 2 As shown, this utility model includes a hopper 1, with a dust suction coil 2 at the bottom outlet of the hopper 1. The dust suction coil 2 has a number of dust suction ports 21 at its bottom for omnidirectional dust absorption. The top of the dust suction coil 2 is equipped with a suction pipe 3, and the tail end of the suction pipe 3 is connected to a venturi tube 4.

[0032] The venturi tube 4 has an air blowing pipe 5 at its inlet end, and a compressor 6 is located at the inlet end of the air blowing pipe 5. An air storage tank 7 is located on one side of the compressor 6, and the air storage tank 7 is connected to the air blowing pipe 5 via a pipe, forming a stable air supply system. A pressure sensor 18 is also located on the top of the compressor 6 for real-time monitoring of the compressor's output air pressure.

[0033] The venturi tube 4 has a flexible connecting tube 8 at its tail end, and the tail end of the flexible connecting tube 8 is connected to the ash discharge pipe 9. The bottom of the ash discharge pipe 9 has a support 14, which is "H"-shaped and provides stable support. Both ends of the ash discharge pipe 9 have horizontally extending sliding rods 15, which slide through the upper sides of the support 14, allowing the ash discharge pipe 9 to slide laterally on the support 14. Springs 16 are fitted onto the sliding rods 15 near the inner wall of the support 14 and the outer wall of the ash discharge pipe 9 to ensure that the ash discharge pipe 9 returns to its original position after sliding.

[0034] Combined swing component structure

[0035] like Figure 3 and Figure 4 As shown, the ash discharge pipe 9 is equipped with a combined swing assembly for controlling its sliding. The assembly includes a mounting bracket 10 located inside the ash discharge pipe 9. A rotating shaft 11 is inserted into the center of the mounting bracket 10. A turbo fan 12 is coaxially mounted on the end of the rotating shaft 11 near the air blowing pipe 5, and an eccentric wheel 13 is mounted on the end of the rotating shaft 11 away from the turbo fan 12.

[0036] The inner wall of the ash discharge pipe 9 is also symmetrically provided with push rods 17, each with a dome-shaped protrusion 171 at its end. The dome-shaped protrusions 171 slide against the curved surface at the end of the eccentric wheel 13. With this design, when the eccentric wheel 13 rotates, it can drive the push rods 17 to reciprocate, and transmit force through the push rods 17 to make the ash discharge pipe 9 slide laterally. At the same time, the sliding contact between the push rods 17 and the eccentric wheel 13 will also generate micro-vibration, forming a dual ash cleaning effect of "oscillation + vibration".

[0037] Working principle

[0038] System startup: Start compressor 6 to generate high-pressure gas. Pressure sensor 18 monitors the output gas pressure of compressor 6 in real time and transmits the data to the controller.

[0039] The Venturi effect occurs when high-pressure gas enters the Venturi tube 4 through the air blowing pipe 5, forming a high-speed airflow in the constricted section of the Venturi tube 4, which, according to Bernoulli's principle, creates a negative pressure zone.

[0040] Negative pressure dust collection: Negative pressure is transmitted to the dust collection coil 2 through the suction pipe 3, and the dust at the bottom outlet of the hopper 1 is sucked in through the dust collection port 21, and mixed to form a dust-laden airflow.

[0041] Airflow-driven oscillation: Dust-laden airflow enters the ash discharge pipe 9 through the flexible connecting pipe 8, driving the turbo fan 12 to rotate. The turbo fan 12 drives the rotating shaft 11 and the eccentric wheel 13 to rotate, and the eccentric wheel 13 pushes the ash discharge pipe 9 to produce lateral sliding through the push rod 17.

[0042] Spring return: When the eccentric wheel 13 rotates to a position where it does not push the push rod 17, the spring 16 on the slide rod 15 releases energy, causing the ash discharge pipe 9 to return to its original position. This combination of reciprocating sliding and micro-vibration effectively removes dust accumulated on the inner wall of the ash discharge pipe 9.

[0043] Pressure stabilization control: When the controller detects that the pressure fluctuation of compressor 6 exceeds a preset threshold of 5%, it automatically starts the air tank 7 to replenish the system's pressure and maintain a stable air supply. This complementary relationship between compressor 6 and air tank 7 ensures the stability and continuity of the system during long-term operation.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A continuous gas supply device for dust removal during coke oven charging, comprising a silo (1), wherein a dust suction coil (2) is provided at the bottom outlet of the silo (1), and an air suction pipe (3) is provided at the top of the dust suction coil (2), wherein a venturi tube (4) is connected to the tail end of the air suction pipe (3), characterized in that, The venturi tube (4) has an air blowing pipe (5) at its input end, and a compressor (6) at its input end. A gas storage tank (7) is provided on one side of the compressor (6). The gas storage tank (7) is connected to the air blowing pipe (5) through a pipe. A flexible connecting pipe (8) is provided at the tail end of the venturi tube (4). A ash discharge pipe (9) is connected at the tail end of the flexible connecting pipe (8). A support (14) is provided at the bottom of the ash discharge pipe (9). The support (14) is "H" shaped. Sliding rods (15) are provided laterally at both ends of the ash discharge pipe (9). The sliding rods (15) slide through both sides of the upper part of the support (14). A combined swing assembly for controlling its sliding is provided inside the ash discharge pipe (9).

2. The continuous gas supply device for coke oven coal charging and dust removal according to claim 1, characterized in that, The combined swing assembly includes a mounting bracket (10) located inside the ash discharge pipe (9). A rotating shaft (11) is inserted into the center of the mounting bracket (10). A turbo fan (12) is coaxially provided at one end of the rotating shaft (11) near the air blowing pipe (5). An eccentric wheel (13) is provided at the other end of the rotating shaft (11) away from the turbo fan (12).

3. The continuous gas supply device for coke oven coal charging and dust removal according to claim 2, characterized in that, The inner wall of the ash discharge pipe (9) is also symmetrically provided with top rods (17), and the ends of the top rods (17) are provided with dome protrusions (171), and the dome protrusions (171) slide against the curved surface of the end of the eccentric wheel (13).

4. The continuous gas supply device for coke oven coal charging and dust removal according to claim 1, characterized in that, Springs (16) are fitted on the slide rod (15) at the position between the inner wall of the bracket (14) and the outer wall of the ash discharge pipe (9).

5. A continuous gas supply device for dust removal during coke oven charging according to claim 1, characterized in that, A pressure sensor (18) is also provided on the top of the compressor (6).

6. The continuous gas supply device for coke oven coal charging and dust removal according to claim 1, characterized in that, The bottom of the suction coil (2) is provided with a number of suction ports (21).

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