A leak-proof sealing mechanism for coal mine ventilation duct interfaces

Abstract

This utility model discloses a leak-proof sealing mechanism for the interface of a coal mine ventilation duct, relating to the field of ventilation duct interface sealing technology. It is installed on the ventilation duct body, with a base fixedly welded to the bottom end of the duct body. Flanges are symmetrically connected to both ends of the duct body, and a first fixing block is fixedly connected to the front of the duct body, with a threaded groove inside the first fixing block. This utility model, by incorporating threaded rods and a connecting sleeve, allows the connecting sleeve to seal and protect the flange and its internal bolts, preventing leakage caused by debris accumulation and effectively preventing mechanical damage from bumps and impacts, thus reducing leakage caused by flange deformation. The design also includes rubber rods and rubber rings. During use, multiple sets of rubber rods distributed on the outside of the connecting sleeve can cover and protect the edge of the connecting sleeve, ensuring safety during operation. The rubber rings can fill any gaps.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct interface sealing technology, and in particular to a leak-proof sealing mechanism for coal mine ventilation duct interfaces. Background Technology

[0002] In coal mine ventilation systems, flanges are used to connect rigid ventilation ducts at their interfaces. This connection method offers high strength and reliable sealing, making it suitable for the harsh ventilation conditions underground.

[0003] The flanges at the existing ventilation duct interfaces are always exposed during use. As a result, high concentrations of coal dust and rock dust in the mine easily accumulate on the flange mating surface and the surface of the seals. This not only wears down the seals and damages the seal fit, but also blocks the bolt gaps, creating air leakage channels. In addition, collisions with gangue and accidental tool contact during tunneling operations can easily cause flange deformation or seal damage, further aggravating air leakage. To address these issues, we propose a leak-proof sealing mechanism for coal mine ventilation duct interfaces. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a leak-proof sealing mechanism for coal mine ventilation duct interfaces.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A leak-proof sealing mechanism for a coal mine ventilation duct interface is installed on the duct body. A base is fixedly welded to the bottom of the duct body, and flanges are symmetrically connected to both ends of the duct body. A first fixing block is fixedly connected to the front of the duct body, and a threaded groove is opened inside the first fixing block. A threaded rod is inserted into the threaded groove, and one end of the threaded rod is connected to a connecting sleeve through a bearing.

[0006] In this device, by setting threaded rods and connecting sleeves, after the flanges are connected, the connecting sleeves can seal and protect the flanges and the bolts inserted inside them. This not only prevents leakage caused by the accumulation of debris, but also effectively prevents mechanical damage caused by bumps and impacts, thereby reducing leakage caused by flange deformation.

[0007] Preferably, the other end of the threaded rod is fixedly connected to a rotating plate, and the outer side of the rotating plate is provided with anti-slip texture.

[0008] Preferably, a second fixing block is fixedly connected to the back of the air duct body, and the second fixing block has a hole inside, a crossbar is inserted into the hole, and the end of the crossbar is fixedly connected to the outer wall of the connecting sleeve.

[0009] Preferably, the inner wall of the connecting sleeve is glued with a sealing ring, and the inner wall of the sealing ring is tightly fitted with the outer wall of the air duct body.

[0010] Preferably, rubber rods are evenly distributed on the outer side of the connecting sleeve, and the rubber rods are configured in an L-shape.

[0011] Preferably, a rubber ring is fixedly glued to the inner side of the connecting sleeve, and the outer cross-section of the rubber ring is set as an L-shaped structure.

[0012] Preferably, the side of the first fixing block is connected to the second fixing block through an arc-shaped plate, and a reserved groove is provided at the middle position of the arc-shaped plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This device, equipped with a threaded rod and a connecting sleeve, seals and protects the flange and its internal bolts after the flange is connected. This not only prevents leakage caused by the accumulation of debris, but also effectively prevents mechanical damage caused by bumps and impacts, thereby reducing leakage caused by flange deformation.

[0014] 2. This device is equipped with rubber rods and rubber rings. During use, multiple sets of rubber rods distributed on the outside of the connecting sleeve can cover and protect the edge of the connecting sleeve, thereby ensuring the safety of the connecting sleeve during operation. The rubber rings can fill the gaps, thereby effectively ensuring the sealing effect of the connecting sleeve on the flange. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a leak-proof sealing mechanism for a coal mine ventilation duct interface proposed in this utility model. Figure 2 for Figure 1 A three-dimensional cross-sectional view of the crossbar and the second fixing block structure; Figure 3 for Figure 1 A three-dimensional cross-sectional view of the connecting sleeve and sealing ring structure in the diagram; Figure 4 for Figure 1 A three-dimensional cross-sectional schematic diagram of the threaded rod and rotating plate structure in the diagram; Figure 5 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0016] In the diagram: 1. Air duct body; 2. Flange; 3. First fixing block; 4. Threaded rod; 5. Connecting sleeve; 6. Rotating plate; 7. Crossbar; 8. Second fixing block; 9. Rubber rod; 10. Arc plate; 11. Rubber ring; 12. Base; 13. Sealing ring. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1-5 A leak-proof sealing mechanism for the interface of a coal mine ventilation duct is installed on the duct body 1. A base 12 is fixedly welded to the bottom end of the duct body 1. The internal components of the duct body 1 and its specific ventilation principle are existing and mature, and will not be described in detail here. Flanges 2 are symmetrically connected to both ends of the duct body 1. A first fixing block 3 is fixedly connected to the front of the duct body 1. The first fixing block 3 has a threaded groove inside. A threaded rod 4 is inserted into the threaded groove. One end of the threaded rod 4 is connected to a connecting sleeve 5 through a bearing.

[0019] Furthermore, refer to Figure 2 and Figure 4 It can be seen that the other end of the threaded rod 4 is fixedly connected to the rotating plate 6, and the outer side of the rotating plate 6 is provided with anti-slip texture. Through the cooperation of the rotating plate 6 and the anti-slip texture, the threaded rod 4 can be rotated by the staff with ease, thereby effectively improving the convenience of using the device.

[0020] Furthermore, refer to Figure 2 and Figure 3 It can be seen that a second fixing block 8 is fixedly connected to the back of the air duct body 1, and the second fixing block 8 has a hole inside, a crossbar 7 is inserted inside the hole, and the end of the crossbar 7 is fixedly connected to the outer wall of the connecting sleeve 5. Through the cooperation of the crossbar 7 and the second fixing block 8, the connecting sleeve 5 can be accurately guided during the movement to ensure its stable lateral movement.

[0021] Furthermore, refer to Figure 3 and Figure 4 It can be seen that the inner wall of the connecting sleeve 5 is glued with a sealing ring 13, and the inner wall of the sealing ring 13 is tightly fitted with the outer wall of the air duct body 1. Through the glued sealing ring 13, the gap between the inner wall of the connecting sleeve 5 and the outer wall of the air duct body 1 can be reduced, thereby effectively improving the sealing effect of the device.

[0022] Furthermore, refer to Figure 3 and Figure 4 It can be seen that rubber rods 9 are evenly distributed on the outer side of the connecting sleeve 5, and the rubber rods 9 are set in an L-shaped structure. Through the rubber rods 9 set in each group of L-shaped structures, the edge of the connecting sleeve 5 can be surrounded and protected, thereby ensuring the service life of the connecting sleeve 5.

[0023] Furthermore, refer to Figure 1 and Figure 5 It can be seen that a rubber ring 11 is fixedly glued to the inner side of the connecting sleeve 5, and the outer cross section of the rubber ring 11 is set as an L-shaped structure. The length of the rubber ring 11 is greater than that of the connecting sleeve 5. The joint of the connecting sleeve 5 can be sealed by the two sets of L-shaped rubber rings 11.

[0024] Furthermore, refer to Figure 1 and Figure 4 It can be seen that the side of the first fixing block 3 is connected to the second fixing block 8 through the arc plate 10. A reserved groove is provided in the middle of the arc plate 10. With the arc plate 10 and the reserved groove, it is convenient for the staff to use bolts to connect and fix the first fixing block 3 and the second fixing block 8 to the air duct body 1.

[0025] Working Principle: In use, the operator first brings the air duct bodies 1 to be connected close together, so that the flanges 2 connected to the sides of the air duct bodies 1 abut against each other. Then, the operator inserts each set of bolts into the screw holes inside the flanges 2 to connect and fix the air duct bodies 1 together. After connecting the flanges 2, the operator rotates the rotating plate 6, causing the threaded rod 4 to rotate simultaneously, thus causing the connecting sleeve 5 to move laterally under force and cover one side of the flange 2. Then, the operator can rotate the other set of bolts... The rotating plate 6 on the front of the duct body 1 can drive the lateral movement of another set of connecting sleeves 5. When the two sets of connecting sleeves 5 come into contact with each other, the flange 2 can be fully covered and protected. The multiple sets of rubber rods 9 glued to the side of the connecting sleeves 5 can come into contact with the rubber rods 9 in advance when the foreign object collides with the connecting sleeves 5, thereby protecting the edge of the connecting sleeves 5. When it is necessary to remove the bolts inside the flange 2, the rotating plates 6 can be rotated in the opposite direction to drive the connecting sleeves 5 and the flange 2 to move in the same direction. The above is the complete working principle of this utility model.

[0026] In this utility model, the installation, connection or setting methods of all the components mentioned above are common mechanical methods, and the specific structure, model and coefficient index of all the components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented, so they will not be described in detail.

[0027] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0028] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside, and vertical and horizontal" in the terminology only represent the orientation of the term in its conventional use or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, numerals such as "first," "second," and "third" do not represent specific quantities or orders, but are only used to distinguish names. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Claims

1. A leak-proof sealing mechanism for the interface of a coal mine ventilation duct, installed on the duct body (1), characterized in that, The bottom end of the air duct body (1) is fixedly welded with a base (12), and the two ends of the air duct body (1) are symmetrically connected with flanges (2). The front of the air duct body (1) is fixedly connected with a first fixing block (3), and the inside of the first fixing block (3) is provided with a threaded groove. A threaded rod (4) is inserted into the inside of the threaded groove, and one end of the threaded rod (4) is connected to a connecting sleeve (5) through a bearing.

2. The leak-proof sealing mechanism for the interface of a coal mine ventilation duct according to claim 1, characterized in that, The other end of the threaded rod (4) is fixedly connected to a rotating plate (6), and the outer side of the rotating plate (6) is provided with anti-slip texture.

3. The leak-proof sealing mechanism for the interface of a coal mine ventilation duct according to claim 1, characterized in that, The back of the air duct body (1) is fixedly connected to a second fixing block (8), and the second fixing block (8) has a hole inside, a crossbar (7) is inserted inside the hole, and the end of the crossbar (7) is fixedly connected to the outer wall of the connecting sleeve (5).

4. The leak-proof sealing mechanism for the interface of a coal mine ventilation duct according to claim 1, characterized in that, The inner wall of the connecting sleeve (5) is glued with a sealing ring (13), and the inner wall of the sealing ring (13) and the outer wall of the air duct body (1) are tightly fitted.

5. The leak-proof sealing mechanism for the interface of a coal mine ventilation duct according to claim 1, characterized in that, The outer side of the connecting sleeve (5) is evenly distributed with rubber rods (9), and the rubber rods (9) are set in an L-shaped structure.

6. The leak-proof sealing mechanism for the interface of a coal mine ventilation duct according to claim 1, characterized in that, The inner side of the connecting sleeve (5) is fixedly glued with a rubber ring (11), and the outer cross section of the rubber ring (11) is set as an L-shaped structure.

7. The leak-proof sealing mechanism for the interface of a coal mine ventilation duct according to claim 1, characterized in that, The side of the first fixing block (3) is connected to the second fixing block (8) through the arc plate (10), and a reserved groove is provided in the middle position of the arc plate (10).

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