A sealing device for a wall-free plug cleaning machine

Abstract

The utility model discloses a sealing device for exempting from sticking wall clearing block machine, be applicable to exempting from sticking wall clearing block machine in, exempting from sticking wall clearing block machine has upper and lower and is sequentially set and intercommunication's upper cone, middle cone and lower cylinder, upper cone bottom inserts middle cone top, middle cone bottom inserts lower cylinder top, and middle cone outside can rotate through the connecting external force, its characterized in that: be equipped with flange plate in middle cone top and lower cylinder top, and the upper portion of flange plate is equipped with the pressing ring, and the flange plate and the pressing ring form a half -enclosed sealed cavity after combination, and the inside of this sealed cavity is provided with two sealing rings at least, and the flange plate is fixed after with the pressing ring through fastener, and the sealing ring is pressed tightly in the one end of pressing ring. The utility model discloses simple structure, reasonable in design can effectively satisfy the requirement of clearing block machine to seal, and when sealing element wears can be replaced conveniently, guarantee the normal operation of production.

Description

Technical Field

[0001] This utility model relates to the field of coal bunker supply unblocking technology, specifically to a sealing device for a non-stick wall unblocking machine. Background Technology

[0002] In coal production and transfer systems, coal bunker unblocking machines are core equipment for solving coal bunker blockage problems. They need to operate under harsh conditions of high dust, high humidity, strong vibration, and coal particle impact for extended periods. Their working principle typically involves an actuator (such as a breaker hammer, spiral blades, or high-pressure nozzle) extending into the coal bunker to crush, cut, or flush away the blocked coal, thus achieving a clearing effect. The connection points between the actuator and the coal bunker wall, as well as the joints between the various moving parts of the unblocking machine itself, all rely on sealing devices for isolation and protection. These devices must prevent the leakage of coal dust, coal powder, and moisture from inside the bunker, avoiding pollution of the production environment and harm to the health of workers. They must also prevent external impurities (such as dust and rainwater) from entering the equipment, protecting the normal operation of core components such as the motor, hydraulic system, and transmission parts. Furthermore, they must adapt to the dynamic movements of the unblocking machine's actuator (such as extension, rotation, and oscillation), ensuring reliable sealing performance throughout the process. However, current sealing devices in coal bunker unblocking machines generally suffer from poor adaptability, short seal life, and high maintenance costs, becoming key bottlenecks restricting the stable operation of these machines. As coal bunker unblocking technology develops towards larger scale and higher pressure, the actuators of these machines have longer strokes (some exceeding 5m) and higher working pressures (hydraulic system pressures can reach 31.5MPa), placing higher demands on the pressure resistance, wear resistance, and dynamic tracking performance of the sealing devices. Traditional sealing devices not only struggle to adapt to these conditions but also face a "contradiction between sealing and movement"—improving sealing performance requires increasing the pressure on the sealing surface, but excessive pressure exacerbates movement resistance and component wear, shortening equipment lifespan; conversely, reducing pressure, while reducing wear, can lead to seal failure. Simultaneously, increasingly stringent environmental policies regarding dust emissions mean that traditional sealing devices can no longer meet environmental requirements due to dust leakage. There is an urgent need to develop new sealing devices that combine high sealing performance, long lifespan, low friction, and easy maintenance to solve the sealing challenges of coal bunker unblocking machines under harsh conditions, ensuring stable equipment operation, reducing maintenance costs, and meeting the dual demands of environmental protection and safe production. Utility Model Content

[0003] To address the aforementioned shortcomings, the purpose of this invention is to provide a sealing device for a non-stick wall unclogging machine. This sealing device not only effectively ensures the sealing effect during the unclogging process, but also allows for quick replacement of worn seals, ensuring normal production.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a sealing device for a non-stick wall unblocking machine, applicable to the non-stick wall unblocking machine, which has an upper cone, a middle cone, and a lower cylinder arranged sequentially from top to bottom and connected to each other. The bottom of the upper cone is inserted into the top of the middle cone, and the bottom of the middle cone is inserted into the top of the lower cylinder. The middle cone can rotate by connecting external force. A flange is provided at the top of the middle cone and the top of the lower cylinder. A pressure ring is provided on the upper part of the flange. The flange and the pressure ring are combined to form a semi-closed sealing cavity. At least two sealing rings are provided inside the sealing cavity. After the flange and the pressure ring are fixed by fasteners, one end of the pressure ring presses against the sealing ring. A boss is provided near the bottom outer wall of the upper cone and near the bottom outer wall of the middle cone. The boss is in close contact with the sealing rings located at the junction of the upper cone and the middle cone and the junction of the middle cone and the lower cylinder, respectively.

[0005] Furthermore, there are certain gaps between the boss and the pressure ring located at the junction of the upper cone and the middle cone, and at the junction of the middle cone and the lower cylinder.

[0006] In operation, the central cone rotates continuously under power. During rotation, the flange and pressure ring at the top of the central cone rotate accordingly, while the boss on the outer wall of the upper cone remains stationary. During rotation, the boss continuously rubs against the sealing ring. After a period of operation, the sealing ring will wear down. At this point, the fasteners can be tightened multiple times to ensure a seal between the upper and central cones. Similarly, the flange and pressure ring at the top of the lower cylinder remain stationary while the central cone rotates. The boss on the central cone continuously rubs against the sealing ring. After a period of operation, the sealing ring will also wear down. At this point, the fasteners can be tightened multiple times to ensure a seal between the lower cylinder and the central cone. Once the sealing ring is thoroughly worn, the fasteners can be loosened, and a new sealing ring can be replaced to meet the sealing requirements of the unblocking machine.

[0007] The advantages of this utility model are: simple structure, reasonable design, effective in meeting the sealing requirements of the unblocking machine, and easy replacement of the seal when it is worn, ensuring normal production. Attached Figure Description

[0008] The structure and features of this utility model will be further described below with reference to the accompanying drawings.

[0009] Figure 1 This is a schematic diagram of the structure of this utility model.

[0010] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0011] Appendix Figure 1 and Figure 2In the middle section, there are: 1. Upper cone; 2. Middle cone; 3. Lower cylinder; 4. Pressure ring; 5. Fastener; 6. Flange; and 7. Sealing ring. Detailed Implementation

[0012] See appendix Figure 1 and 2 This is one embodiment of the present invention, disclosing a sealing device for a non-stick wall unclogging machine. The non-stick wall unclogging machine has an upper cone 1, a middle cone 2, and a lower cylinder 3 arranged sequentially from top to bottom and connected to each other. The bottom of the upper cone 1 is inserted into the top of the middle cone 2, and the bottom of the middle cone 2 is inserted into the top of the lower cylinder 3. The middle cone 2 can rotate through an external force. Flanges 6 are provided at the top of both the middle cone 2 and the lower cylinder 3, and pressure rings 4 are provided on the upper part of the flanges 6. The flanges 6 and pressure rings 4, when combined, form a sealing device. A semi-closed sealing cavity is formed, and at least two sealing rings 7 are provided inside the sealing cavity. After the flange 6 and the pressure ring 4 are fixed by fasteners 5, one end of the pressure ring 4 presses against the sealing ring 7. The upper cone 1 and the middle cone 2 are provided with bosses near the bottom outer wall. The bosses are in close contact with the sealing rings 7 located at the junction of the upper cone 1 and the middle cone 2, and at the junction of the middle cone 2 and the lower cylinder 3, respectively. There is a certain gap between the bosses and the pressure rings 4 located at the junction of the upper cone 1 and the middle cone 2, and at the junction of the middle cone 2 and the lower cylinder 3, respectively.

[0013] In operation, the middle cone 2 rotates continuously under power. During rotation, the flange 6 and pressure ring 4 at the top of the middle cone 2 rotate accordingly, while the boss on the outer wall of the upper cone 1 remains stationary. During rotation, the boss continuously rubs against the sealing ring 7. After a period of operation, the sealing ring 7 will wear down. At this time, the fastener 5 can be tightened multiple times to ensure the seal between the upper cone 1 and the middle cone 2. The flange 6 and pressure ring 4 at the top of the lower cylinder 3 remain stationary when the middle cone 2 rotates. The boss on the middle cone 2 continuously rubs against the sealing ring 7. After a period of operation, the sealing ring 7 will wear down. At this time, the fastener 5 can be tightened multiple times to ensure the sealing effect between the lower cylinder 3 and the middle cone 2. When the sealing ring 7 is worn down completely, the fastener 5 is loosened and a new sealing ring 7 is replaced to meet the sealing requirements of the unblocking machine.

[0014] The above description is only a preferred embodiment of the present utility model. The above specific embodiments are not intended to limit the present utility model. Any modifications, alterations or equivalent substitutions made by those skilled in the art based on the above description shall fall within the protection scope of the present utility model.

Claims

1. A sealing device for a non-stick wall unclogging machine, applicable to the non-stick wall unclogging machine, the non-stick wall unclogging machine having an upper cone, a middle cone, and a lower cylinder arranged sequentially from top to bottom and connected, the bottom of the upper cone being inserted into the top of the middle cone, the bottom of the middle cone being inserted into the top of the lower cylinder, and the middle cone being rotatable by connecting an external force, characterized in that: Flanges are provided at the top of the middle cone and the top of the lower cylinder. A pressure ring is provided on the upper part of the flange. The flange and the pressure ring are combined to form a semi-closed sealing cavity. At least two sealing rings are provided inside the sealing cavity. After the flange and the pressure ring are fixed by fasteners, one end of the pressure ring presses against the sealing ring. A boss is provided near the bottom outer wall of the upper cone and near the bottom outer wall of the middle cone. The boss is in close contact with the sealing rings located at the junction of the upper cone and the middle cone and the junction of the middle cone and the lower cylinder, respectively.

2. The sealing device for a non-stick wall unclogging machine according to claim 1, characterized in that: There are certain gaps between the boss and the pressure ring located at the junction of the upper cone and the middle cone, and at the junction of the middle cone and the lower cylinder.

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