Ventilation device for coal mining

Abstract

The utility model relates to the technical field of ventilation equipment, in particular to a ventilation device for coal mining. According to the technical scheme, the device comprises a connecting cover, a connecting plate, a screw rod and ventilation holes, a maintenance plate is arranged at the lower end of the outer wall of one side of the connecting cover, the screw rod is in threaded connection with one side of the lower end of the inner wall of the connecting cover, the connecting plate is arranged on the outer wall of the upper end of the screw rod, and first sealing rings are fixedly attached to the outer walls of the two sides of the connecting plate; second sealing rings are fixedly attached to the outer walls of the two sides of the connecting plate, ventilation holes are formed in the two sides of the inner wall of the connecting plate, and filtering structures are arranged on the inner walls of the ventilation holes. By arranging the screw rod, the connecting plate and the filtering structures, the effect of conveniently controlling on-off of air supply is achieved, the flowing direction of airflow can be controlled, and the air volume loss can be reduced; and the relative cleanliness of the filtering structure is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, in particular to a ventilation device for coal mining. Background Art

[0002] Coal is a solid combustible mineral that was gradually formed when ancient plants were buried underground and underwent complex biochemical and physicochemical changes. Mine ventilation for underground mining is one of the necessary conditions for all mines. Mine ventilation generally consumes a lot of energy, so the development and application of energy-saving mine ventilation technology for underground mining has become one of the important issues that need to be solved in my country's mining industry.

[0003] Patent announcement number CN213684195U discloses a ventilation device for coal mine safety, which belongs to the field of coal mine safety ventilation technology. A ventilation device for coal mine safety, including a ventilation window, a triangular bracket connected inside the ventilation window, a driving shaft connected to the center of the triangular bracket, a driving mechanism connected to the driving shaft, a shaft sleeve connected to the other end of the driving shaft, and three fan blades distributed circumferentially on the shaft sleeve. The device has a ventilation effect in coal mine production, avoiding the accumulation of toxic gases in coal mine production and causing harm to the human body. At the same time, harmful substances in the airflow can be filtered during the ventilation process to reduce toxic emissions.

[0004] Although the prior art CN213684195U has many benefits during use, it still has the following problems: it lacks an on-off structure for the ventilation holes. As the mining depth of the mine increases, the ventilation route becomes longer and the ventilation resistance gradually increases. Therefore, it is necessary to optimize the ventilation route, but it is inconvenient to block and restrict the redundant or abandoned tunnels, resulting in a large air volume loss. Utility Model Content

[0005] The purpose of the utility model is to provide a ventilation device for coal mining to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a ventilation device for coal mining, comprising a connecting cover, a connecting plate, a screw and ventilation holes, a repair plate is provided at the lower end of the outer wall of one side of the connecting cover, a screw is threadedly connected to one side of the lower end of the inner wall of the connecting cover, a connecting plate is provided at the outer wall of the upper end of the screw, a first sealing ring is fitted and fixed to the outer walls of both sides of the connecting plate, a second sealing ring is fitted and fixed to the outer walls of both sides of the connecting plate, ventilation holes are opened on both sides of the inner wall of the connecting plate, and a filtering structure is provided on the inner wall of the ventilation hole.

[0007] When using a ventilation device for coal mining in the technical solution, the airflow flows inside the ventilation pipe and the ventilation hole, and the airflow is filtered by the filter structure to ensure the relative cleanliness of the airflow. The staff manually turns the handle and the screw to rotate in a circle, thereby driving the connecting plate to move vertically inside the connecting cover, so that the first sealing ring and the connecting plate block the ventilation pipe, thereby achieving the purpose of blocking the ventilation pipe. The staff opens the inspection panel, so that the filter structure can be disassembled and maintained through the inspection port of the connecting cover.

[0008] Preferably, the outer wall of the inspection plate is provided with bolts distributed in a rectangular array, and the through-hole bolts of the inspection plate are connected to the connecting cover.

[0009] The bolts ensure the connection stability between the inspection plate and the connecting cover, and the inspection plate can cover the inspection opening of the connecting cover.

[0010] Preferably, a handle is installed on the outer wall of the lower end of the screw rod, and the handle is located at the lower end of the connecting cover.

[0011] The staff can easily drive the screw to rotate through the handle.

[0012] Preferably, a bearing is embedded and installed on one side of the outer wall of the lower end of the connecting plate, and the screw is rotatably installed inside the bearing.

[0013] The connecting plate is prevented from rotating with the screw by the bearing.

[0014] Preferably, the size of the connecting plate is smaller than the size of the inner wall of the connecting cover, and the connecting plate is located inside the connecting cover.

[0015] Preferably, the first sealing ring is in contact with the inner wall of the connecting cover, and the first sealing ring and the second sealing ring have the same size.

[0016] The first sealing ring and the second sealing ring can both ensure the sealing between the connecting plate and the connecting cover.

[0017] Preferably, ventilation pipes are plugged and installed on the outer walls on both sides of the connection cover, and the ventilation pipes are in contact with the second sealing ring.

[0018] Air flows inside the ventilation duct.

[0019] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model achieves the effect of facilitating the control of air supply on and off by arranging a screw, a connecting plate and a filtering structure. The airflow flows inside the ventilation pipe and the ventilation hole, and the airflow is filtered by the filtering structure to ensure the relative cleanliness of the airflow. The staff manually rotates the handle and the screw to rotate in a circle, thereby driving the connecting plate to move vertically inside the connecting cover, so that the first sealing ring and the connecting plate block the ventilation pipe, thereby achieving the purpose of blocking the ventilation pipe, being able to control the flow direction of the airflow and reduce the air volume loss. The staff opens the inspection panel, so as to be able to disassemble and maintain the filtering structure through the inspection port of the connecting cover to ensure the relative cleanliness of the filtering structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the appearance of the connection cover structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the appearance of the connecting plate structure of the utility model;

[0022] Figure 3 It is a partial cross-sectional schematic diagram of the connecting plate structure of the utility model;

[0023] Figure 4 It is a partially enlarged schematic diagram of the connecting plate structure of the utility model.

[0024] In the figure: 1. connecting cover; 11. ventilation pipe; 12. inspection plate; 13. screw; 14. handle; 15. bolt; 2. connecting plate; 21. first sealing ring; 22. second sealing ring; 23. ventilation hole; 24. filtering structure; 25. bearing. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 , five embodiments provided by the utility model:

[0027] Embodiment 1: A ventilation device for coal mining, comprising a connecting cover 1, a connecting plate 2, a screw 13 and ventilation holes 23, wherein an inspection plate 12 is arranged at the lower end of the outer wall of one side of the connecting cover 1, a screw 13 is threadedly connected to one side of the lower end of the inner wall of the connecting cover 1, a connecting plate 2 is arranged at the outer wall of the upper end of the screw 13, a first sealing ring 21 is fitted and fixed to the outer walls of both sides of the connecting plate 2, a second sealing ring 22 is fitted and fixed to the outer walls of both sides of the connecting plate 2, ventilation holes 23 are opened on both sides of the inner wall of the connecting plate 2, a filtering structure 24 is arranged on the inner wall of the ventilation hole 23, the airflow flows inside the ventilation pipe 11 and the ventilation hole 23, and the airflow is filtered by the filtering structure 24 to ensure the relative cleanliness of the airflow.

[0028] Ventilation pipes 11 are inserted and installed on the outer walls of both sides of the connection cover 1, and the ventilation pipes 11 are in contact with the second sealing ring 22. Air flows inside the ventilation pipes 11.

[0029] Embodiment 2: A ventilation device for coal mining, comprising a connecting cover 1, a connecting plate 2, a screw 13 and ventilation holes 23, wherein an inspection plate 12 is provided at the lower end of the outer wall of one side of the connecting cover 1, a screw 13 is threadedly connected to one side of the lower end of the inner wall of the connecting cover 1, a connecting plate 2 is provided at the outer wall of the upper end of the screw 13, a first sealing ring 21 is fitted and fixed to the outer walls of both sides of the connecting plate 2, a second sealing ring 22 is fitted and fixed to the outer walls of both sides of the connecting plate 2, ventilation holes 23 are opened on both sides of the inner wall of the connecting plate 2, and a filtering structure 24 is provided on the inner wall of the ventilation hole 23.

[0030] A handle 14 is installed on the outer wall of the lower end of the screw rod 13, and the handle 14 is located at the lower end of the connecting cover 1. The staff can drive the screw rod 13 to rotate by the handle 14.

[0031] A bearing 25 is embedded and installed on one side of the outer wall of the lower end of the connecting plate 2, and the screw 13 is rotatably installed inside the bearing 25. The connecting plate 2 is prevented from rotating with the screw 13 by the bearing 25.

[0032] Embodiment 3: A ventilation device for coal mining, comprising a connecting cover 1, a connecting plate 2, a screw 13 and a ventilation hole 23, wherein an inspection plate 12 is provided at the lower end of the outer wall of one side of the connecting cover 1, a screw 13 is threadedly connected to one side of the lower end of the inner wall of the connecting cover 1, a connecting plate 2 is provided at the outer wall of the upper end of the screw 13, a first sealing ring 21 is fitted and fixed to the outer walls of both sides of the connecting plate 2, a second sealing ring 22 is fitted and fixed to the outer walls of both sides of the connecting plate 2, ventilation holes 23 are opened on both sides of the inner wall of the connecting plate 2, and a filter structure 24 is provided on the inner wall of the ventilation hole 23.

[0033] A handle 14 is installed on the outer wall of the lower end of the screw rod 13, and the handle 14 is located at the lower end of the connecting cover 1. The staff can drive the screw rod 13 to rotate by the handle 14.

[0034] A bearing 25 is embedded and installed on one side of the outer wall of the lower end of the connecting plate 2, and the screw 13 is rotatably installed inside the bearing 25. The connecting plate 2 is prevented from rotating with the screw 13 by the bearing 25.

[0035] The size of the connecting plate 2 is smaller than the size of the inner wall of the connecting cover 1 , and the connecting plate 2 is located inside the connecting cover 1 .

[0036] Embodiment 4: A ventilation device for coal mining, comprising a connecting cover 1, a connecting plate 2, a screw 13 and a ventilation hole 23, wherein an inspection plate 12 is provided at the lower end of the outer wall of one side of the connecting cover 1, a screw 13 is threadedly connected to one side of the lower end of the inner wall of the connecting cover 1, a connecting plate 2 is provided at the outer wall of the upper end of the screw 13, a first sealing ring 21 is fitted and fixed to the outer walls of both sides of the connecting plate 2, a second sealing ring 22 is fitted and fixed to the outer walls of both sides of the connecting plate 2, ventilation holes 23 are opened on both sides of the inner wall of the connecting plate 2, and a filter structure 24 is provided on the inner wall of the ventilation hole 23.

[0037] A handle 14 is installed on the outer wall of the lower end of the screw rod 13, and the handle 14 is located at the lower end of the connecting cover 1. The staff can drive the screw rod 13 to rotate by the handle 14.

[0038] A bearing 25 is embedded and installed on one side of the outer wall of the lower end of the connecting plate 2, and the screw 13 is rotatably installed inside the bearing 25. The connecting plate 2 is prevented from rotating with the screw 13 by the bearing 25.

[0039] The size of the connecting plate 2 is smaller than the size of the inner wall of the connecting cover 1 , and the connecting plate 2 is located inside the connecting cover 1 .

[0040] The first sealing ring 21 contacts the inner wall of the connection cover 1 , and the sizes of the first sealing ring 21 and the second sealing ring 22 are consistent. The first sealing ring 21 and the second sealing ring 22 can both ensure the sealing between the connection plate 2 and the connection cover 1 .

[0041] The outer walls on both sides of the connection cover 1 are plugged and installed with ventilation pipes 11, and the ventilation pipes 11 are in contact with the second sealing ring 22. The airflow flows inside the ventilation pipe 11, and the airflow flows inside the ventilation pipe 11 and the ventilation hole 23, and the airflow is filtered by the filter structure 24 to ensure the relative cleanliness of the airflow. The staff manually rotates the handle 14 and the screw 13 to rotate in a circle, thereby driving the connection plate 2 to move vertically inside the connection cover 1, so that the first sealing ring 21 and the connection plate 2 block the ventilation pipe 11, achieving the purpose of blocking the ventilation pipe 11, and being able to control the flow direction of the airflow and reduce the air volume loss.

[0042] Embodiment 5: A ventilation device for coal mining, comprising a connecting cover 1, a connecting plate 2, a screw 13 and a ventilation hole 23, wherein an inspection plate 12 is provided at the lower end of the outer wall of one side of the connecting cover 1, a screw 13 is threadedly connected to one side of the lower end of the inner wall of the connecting cover 1, a connecting plate 2 is provided at the outer wall of the upper end of the screw 13, a first sealing ring 21 is fitted and fixed to the outer walls of both sides of the connecting plate 2, a second sealing ring 22 is fitted and fixed to the outer walls of both sides of the connecting plate 2, ventilation holes 23 are opened on both sides of the inner wall of the connecting plate 2, and a filter structure 24 is provided on the inner wall of the ventilation hole 23.

[0043] The outer wall of the access plate 12 is provided with bolts 15 distributed in a rectangular array, and the through-hole bolts 15 of the access plate 12 are connected to the connection cover 1. The bolts 15 ensure the connection stability between the access plate 12 and the connection cover 1, and the access plate 12 can cover the access opening of the connection cover 1.

[0044] A handle 14 is installed on the outer wall of the lower end of the screw rod 13, and the handle 14 is located at the lower end of the connecting cover 1. The staff can drive the screw rod 13 to rotate by the handle 14.

[0045] A bearing 25 is embedded and installed on one side of the outer wall of the lower end of the connecting plate 2, and the screw 13 is rotatably installed inside the bearing 25. The connecting plate 2 is prevented from rotating with the screw 13 by the bearing 25.

[0046] The size of the connecting plate 2 is smaller than the size of the inner wall of the connecting cover 1 , and the connecting plate 2 is located inside the connecting cover 1 .

[0047] The first sealing ring 21 contacts the inner wall of the connection cover 1 , and the sizes of the first sealing ring 21 and the second sealing ring 22 are consistent. The first sealing ring 21 and the second sealing ring 22 can both ensure the sealing between the connection plate 2 and the connection cover 1 .

[0048] The outer walls on both sides of the connection cover 1 are plugged and installed with ventilation pipes 11, and the ventilation pipes 11 are in contact with the second sealing ring 22. The airflow flows inside the ventilation pipe 11, the airflow flows inside the ventilation pipe 11 and the ventilation hole 23, and the airflow is filtered by the filter structure 24 to ensure the relative cleanliness of the airflow. The staff manually rotates the handle 14 and the screw 13 to rotate in a circle, thereby driving the connecting plate 2 to move vertically inside the connection cover 1, so that the first sealing ring 21 and the connecting plate 2 block the ventilation pipe 11, achieving the purpose of blocking the ventilation pipe 11, being able to control the flow direction of the airflow and reduce the air volume loss, and the staff opens the inspection panel 12, so that the filter structure 24 can be disassembled and maintained through the inspection port of the connection cover 1, ensuring the relative cleanliness of the filter structure 24.

[0049] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A ventilation device for coal mining, comprising a connecting cover (1), a connecting plate (2), a screw (13) and a ventilation hole (23), characterized in that: An inspection plate (12) is provided at the lower end of the outer wall of one side of the connection cover (1), a screw rod (13) is threadedly connected to one side of the lower end of the inner wall of the connection cover (1), a connection plate (2) is provided on the outer wall of the upper end of the screw rod (13), first sealing rings (21) are fitted and fixed to the outer walls of both sides of the connection plate (2), second sealing rings (22) are fitted and fixed to the outer walls of both sides of the connection plate (2), ventilation holes (23) are provided on both sides of the inner wall of the connection plate (2), and a filtering structure (24) is provided on the inner wall of the ventilation hole (23).

2. A ventilation device for coal mining according to claim 1, characterized in that: The outer wall of the inspection plate (12) is provided with bolts (15) distributed in a rectangular array, and the through-hole bolts (15) of the inspection plate (12) are connected to the connection cover (1).

3. A ventilation device for coal mining according to claim 1, characterized in that: A handle (14) is installed on the outer wall of the lower end of the screw rod (13), and the handle (14) is located at the lower end of the connecting cover (1).

4. A ventilation device for coal mining according to claim 1, characterized in that: A bearing (25) is embedded and installed on one side of the outer wall of the lower end of the connecting plate (2), and the screw rod (13) is rotatably installed inside the bearing (25).

5. A ventilation device for coal mining according to claim 1, characterized in that: The size of the connecting plate (2) is smaller than the size of the inner wall of the connecting cover (1), and the connecting plate (2) is located inside the connecting cover (1).

6. A ventilation device for coal mining according to claim 1, characterized in that: The first sealing ring (21) is in contact with the inner wall of the connecting cover (1), and the first sealing ring (21) and the second sealing ring (22) have the same size.

7. A ventilation device for coal mining according to claim 1, characterized in that: Ventilation pipes (11) are inserted and installed on the outer walls of both sides of the connection cover (1), and the ventilation pipes (11) are in contact with the second sealing ring (22).

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