Coal mine ventilation air door structure

Abstract

The utility model discloses a coal mine ventilation air door structure, which relates to the technical field of coal mine ventilation, and comprises a door frame and door plates, the inner side of the door frame is symmetrically provided with two groups of door plates, the bottom ends of the two groups of door plates are respectively provided with a rectangular groove, a sealing plate is accommodated in the rectangular groove, and a thread groove is arranged in the sealing plate. Through the arrangement of the sealing plate and the threaded rod, during use, filling of gaps between the bottom end of the door plate and the ground can be achieved through mutual matching of the sealing plate and the threaded rod, diffusion of harmful gas is prevented, normal drainage operation in a mine cannot be affected, and therefore the safety of the device during use can be effectively improved; and the U-shaped block and the rotating plate are arranged, in the using process, through mutual cooperation of the linkage block and the rotating plate, covering protection on the rotating rod and the rotating block can be achieved, dust and other sundries are prevented from being attached to the rotating block and the rotating rod, and therefore abrasion generated when the rotating rod rotates can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine ventilation, in particular to a coal mine ventilation damper structure. Background Art

[0002] During coal mine operations, underground tunnels crisscross and interconnect. In order to ensure that the airflow flows along the required direction and route, it is necessary to set up air gates, which are important structures in the mine ventilation system. They can effectively control the direction and flow of the airflow and ensure the stability and safety of the mine ventilation system.

[0003] At present, when the existing ventilation dampers are in use, in order to smoothly discharge the accumulated water underground and prevent the bottom of the damper from being worn during the opening and closing process, a large gap is usually left at the bottom of the damper. The gap at the bottom will destroy the overall sealing performance of the damper. There are flammable, toxic and harmful gases such as gas in the coal mine. The gap at the bottom of the damper may become a channel for the gas to diffuse, which will pollute the originally relatively safe area, increase the chance and time of underground workers being exposed to harmful gases, and cause damage to their health. To this end, we propose a coal mine ventilation damper structure to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a coal mine ventilation damper structure.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A coal mine ventilation damper structure includes a door frame and a door panel, two groups of door panels are symmetrically provided on the inner side of the door frame, and rectangular grooves are respectively provided at the bottom ends of the two groups of door panels, a sealing plate is accommodated inside the rectangular groove, and a threaded groove is provided inside the sealing plate, a threaded rod is inserted into the threaded groove, and the top of the threaded rod is connected to the inner wall of the rectangular groove through a bearing, a first bevel gear is sleeved on the top of the threaded rod, and a second bevel gear is engaged with the side of the first bevel gear, a rotating rod is inserted into the interior of the second bevel gear, and the rotating rod extends to the outside of the door panel.

[0007] Preferably, a rubber strip is glued to the bottom end of the sealing plate, and the transverse length of the rubber strip is the same as the transverse length of the sealing plate.

[0008] Preferably, the side of the sealing plate is connected to a limit strip, and a slideway adapted to the limit strip is provided inside the door panel.

[0009] Preferably, the end of the rotating rod is connected to a rotating block, and the rotating block is configured as a long strip structure.

[0010] Preferably, the side of the door panel is connected to a U-shaped block, and the inner side of the U-shaped block is connected to a fixed shaft, the outer side of the fixed shaft is sleeved with a linkage block, and the side of the linkage block is connected to a rotating plate.

[0011] Preferably, a groove is provided on the inner wall of the rotating plate, and a magnetic strip is embedded in the inner wall of the groove. Two groups of magnetic strips are provided, and the other group of magnetic strips is embedded in the side of the door panel.

[0012] Preferably, four groups of the limiting strips are provided, and the four groups of the limiting strips are symmetrically distributed on the front and back sides of the sealing plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The device is provided with a sealing plate and a threaded rod. When in use, the sealing plate and the threaded rod cooperate with each other to fill the gap between the bottom of the door panel and the ground to prevent the diffusion of harmful gases without affecting the normal drainage operation inside the mine, thereby effectively improving the safety of the device when in use.

[0015] 2. The device is provided with a U-shaped block and a rotating plate. During use, the linkage block and the rotating plate cooperate with each other to achieve covering and protection of the rotating rod and the rotating block, so as to prevent dust and other debris from adhering to the rotating block and the rotating rod, thereby effectively reducing the wear of the rotating rod during rotation and preventing dust from corroding the rotating rod, so as to ensure the subsequent normal rotation of the rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a coal mine ventilation damper structure proposed by the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the three-dimensional cross-section of the rectangular groove and thread groove structure;

[0018] Figure 3 for Figure 1 A schematic three-dimensional cross-sectional view of the first bevel gear and the second bevel gear structure;

[0019] Figure 4 for Figure 1 Schematic diagram of the three-dimensional cross-section of the fixed shaft and U-shaped block structure.

[0020] In the figure: 1. Door frame; 2. Door panel; 3. Rectangular groove; 4. Sealing plate; 5. Threaded groove; 6. Threaded rod; 7. First bevel gear; 8. Second bevel gear; 9. Turning rod; 10. Turning block; 11. Limiting strip; 12. Rubber strip; 13. U-shaped block; 14. Fixed shaft; 15. Linkage block; 16. Turning plate; 17. Magnetic strip. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Reference Figure 1-4 The top of the threaded rod 6 is connected to the inner wall of the rectangular groove 3 by a bearing, and the top of the threaded rod 6 is connected to the inner wall of the rectangular groove 3 by a bearing. The top of the threaded rod 6 is sleeved with a first bevel gear 7, and the side edge of the first bevel gear 7 is meshed with a second bevel gear 8, and a rotating rod 9 is inserted into the interior of the second bevel gear 8, and the rotating rod 9 extends to the outside of the door panel 2. The mutual meshing of the second bevel gear 8 and the first bevel gear 7 can meet the reversing rotation requirement of the threaded rod 6, thereby driving the sealing plate 4 to move up and down.

[0023] Further, refer to Figure 2 It can be seen that a rubber strip 12 is glued to the bottom end of the sealing plate 4, and the lateral length of the rubber strip 12 is the same as the lateral length of the sealing plate 4. Through the elastic characteristics of the rubber strip 12 itself, the gap can be filled, thereby further ensuring the sealing of the device when in use.

[0024] Further, refer to Figure 2 and Figure 3 It can be seen that the side of the sealing plate 4 is connected to the limiting strip 11, and the interior of the door panel 2 is provided with a slideway adapted to the limiting strip 11. Through the mutual cooperation of the limiting strip 11 and the slideway, the vertical guidance of the sealing plate 4 can be achieved, so as to effectively ensure that the sealing plate 4 slides up and down stably at the bottom end of the door panel 2.

[0025] Further, refer to Figure 3 It can be seen that the end of the rotating rod 9 is connected to the rotating block 10, and the rotating block 10 is set as a long strip structure. The rotating block 10 set in the long strip shape can facilitate the staff to quickly rotate the rotating rod 9, thereby effectively improving the convenience of using the device.

[0026] Further, refer to Figure 4It can be seen that the side of the door panel 2 is connected to a U-shaped block 13, and the inner side of the U-shaped block 13 is connected to a fixed shaft 14, the outer side of the fixed shaft 14 is sleeved with a linkage block 15, and the side of the linkage block 15 is connected to a rotating plate 16. Through the mutual cooperation of the U-shaped block 13 and the rotating plate 16, the rotation function of the rotating plate 16 can be realized, so that the rotating block 10 and the rotating rod 9 can be protected when not in use. When needed, the rotating plate 16 can be pulled to rotate to expose the rotating block 10 for rotation.

[0027] Further, refer to Figure 4 It can be seen that a groove is provided on the inner wall of the rotating plate 16, and a magnetic strip 17 is embedded in the inner wall of the groove. There are two groups of magnetic strips 17, and the other group of magnetic strips 17 is embedded in the side of the door panel 2. The magnetic strips 17 inside the rotating plate 16 and the magnetic strips 17 inside the door panel 2 have opposite magnetic properties, thereby ensuring the tightness of the rotating plate 16 during the covering process, so as to effectively prevent the rotating plate 16 from being easily rotated by wind and the like.

[0028] Further, refer to Figure 3 It can be seen that four groups of limit strips 11 are provided, and the four groups of limit strips 11 are symmetrically distributed on the front and back sides of the sealing plate 4. By providing the four groups of limit strips 11, the guiding operation of the sealing plate 4 can be further achieved.

[0029] When the door panel 2 is closed, the staff can first rotate the rotating plate 16 to expose the rotating block 10. At this time, the staff can rotate the rotating block 10 to drive the rotating rod 9 to rotate at the same time, and make the second bevel gear 8 and the first bevel gear 7 mesh with each other to drive the threaded rod 6 to rotate in the reverse direction, so that the threaded rod 6 and the threaded groove 5 opened in the sealing plate 4 are threadedly matched, so that the sealing plate 4 inserted in the rectangular groove 3 is forced to move downward step by step, so as to fill the gap at the bottom of the door panel 2, which can effectively ensure the sealing of the door panel 2 during the closing process. After the rotation is completed, the rotating plate 16 can cover the outer side of the rotating block 10. The setting of the rotating plate 16 can block dust and water vapor, thereby effectively ensuring the normal subsequent rotation of the rotating rod 9 to prevent the rotating rod 9 from getting stuck during subsequent use.

[0030] When drainage is required or the door panel 2 needs to be opened, the staff can rotate the rotating block 10 in the opposite direction to drive the sealing plate 4 to be lifted up and stored in the rectangular groove 3, so that the rubber strip 12 connected to the bottom end of the sealing plate 4 no longer contacts the ground, thereby achieving the purpose of drainage. At the same time, it can effectively prevent the rubber strip 12 from being damaged by continuous friction with the ground when the door panel 2 is opened, thereby ensuring the service life of the rubber strip 12. The above is the entire working principle of the utility model.

[0031] In the present invention, the installation method, connection method or setting method of all the components mentioned above are common mechanical methods, and the specific structures, models and coefficient indicators of all its components are its own technology. As long as it can achieve its beneficial effects, it can be implemented, so it will not be elaborated on.

[0032] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

[0033] In the present utility model, unless otherwise specified, the directional words contained in the terms "up, down, left, right, front, back, inside, outside, vertical, horizontal" only represent the directions of the terms in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the terms. At the same time, number series nouns such as "first", "second" and "third" do not represent specific quantities and orders, but are merely used to distinguish names. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

Claims

1. A coal mine ventilation damper structure, comprising a door frame (1) and a door panel (2), characterized in that: Two groups of door panels (2) are symmetrically provided on the inner side of the door frame (1), and rectangular grooves (3) are respectively provided at the bottom ends of the two groups of door panels (2), a sealing plate (4) is accommodated inside the rectangular groove (3), and a threaded groove (5) is provided inside the sealing plate (4), a threaded rod (6) is inserted inside the threaded groove (5), and the top end of the threaded rod (6) is connected to the inner wall of the rectangular groove (3) through a bearing, a first bevel gear (7) is sleeved on the top end of the threaded rod (6), and a second bevel gear (8) is meshed with the side of the first bevel gear (7), a rotating rod (9) is inserted inside the second bevel gear (8), and the rotating rod (9) extends to the outside of the door panel (2).

2. A coal mine ventilation damper structure according to claim 1, characterized in that: A rubber strip (12) is glued to the bottom end of the sealing plate (4), and the transverse length of the rubber strip (12) is the same as the transverse length of the sealing plate (4).

3. A coal mine ventilation damper structure according to claim 1, characterized in that: The side of the sealing plate (4) is connected to a limiting strip (11), and a slideway adapted to the limiting strip (11) is provided inside the door panel (2).

4. A coal mine ventilation damper structure according to claim 1, characterized in that: The end of the rotating rod (9) is connected to a rotating block (10), and the rotating block (10) is configured as a long strip structure.

5. A coal mine ventilation damper structure according to claim 1, characterized in that: The side of the door panel (2) is connected to a U-shaped block (13), and the inner side of the U-shaped block (13) is connected to a fixed shaft (14). The outer side of the fixed shaft (14) is sleeved with a linkage block (15), and the side of the linkage block (15) is connected to a rotating plate (16).

6. A coal mine ventilation damper structure according to claim 5, characterized in that: The inner wall of the rotating plate (16) is provided with a groove, and the inner wall of the groove is embedded with a magnetic strip (17). Two groups of the magnetic strips (17) are provided, and the other group of the magnetic strips (17) is embedded in the side of the door panel (2).

7. A coal mine ventilation damper structure according to claim 3, characterized in that: Four groups of the limiting strips (11) are provided, and the four groups of the limiting strips (11) are symmetrically distributed on the front and back sides of the sealing plate (4).

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