Coal mine ventilation protection structure

Abstract

The utility model provides a coal mine ventilation protection structure which comprises a first air duct, a draught fan is arranged in the first air duct, the other end of the first air duct is provided with a second air duct through a telescopic ventilation assembly, the second air duct is in an L shape and plays a role in rainproof protection, and a dustproof net is arranged at the bottom of the second air duct and plays a role in dustproof protection. The telescopic ventilation assembly and the L-shaped second air cylinder are arranged at the other end of the first air cylinder, ventilation can be switched on rainy days and sunny days, more air can circulate by means of the larger filtering ventilation area of the cylindrical filter screen, the ventilation effect on the sunny days is improved, meanwhile, by means of butt joint of the first air cylinder and the second air cylinder, the ventilation effect on the sunny days is improved, and the ventilation effect on the sunny days is improved. The second air duct is used for achieving the rain-proof and normal ventilation effect on rainy days, the applicability of coal mine ventilation is improved, and therefore the coal mine ventilation effect and the rain-proof protection effect are improved.

Description

Technical Field

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

[0002] A large amount of dust will be generated in the mining face during the production process. High-concentration dust will diffuse and accumulate. Long-term inhalation of dust from the mining face in this working environment makes coal miners prone to coal silicosis. Therefore, the position of coal mine ventilation is particularly important. Therefore, most coal mine ventilation is achieved by setting up air ducts between the coal mine and the outside, and using the ventilation system in the air ducts to ventilate the coal mine, supplying sufficient oxygen to the workers and ensuring the life safety of underground workers.

[0003] The prior art discloses a protective structure for coal mine ventilation (publication number: CN220828265U), which includes a protective assembly, including a box body, an exhaust duct, an outer shell, a support member and a protective member, the exhaust duct is connected to the bottom of the box body, the outer shell is arranged on the top of both sides of the box body, the support member is arranged on the top of the outer shell, and the protective member is arranged on the top of the support member; and a cleaning assembly, which is arranged inside the box body, including a support plate, a dustproof plate, a cleaning member and a fixing member, the support plate is fixed to the top of the inner cavity of the box body, the dustproof plate is fixed to the top of the box body, and the cleaning member is arranged at the bottom of the support plate.

[0004] However, the above technical solution and the prior art still have the following defects: when the ventilation device is in use in windy and rainy weather, inclined rainwater will enter the inside of the box and the exhaust duct through the dustproof plate, making it inevitable that the ventilation device inside the air duct will be damaged by the rainwater, and heavy rainfall may cause water accumulation in the mine, causing safety hazards and affecting the normal ventilation effect of the coal mine. Utility Model Content

[0005] The utility model aims to provide a coal mine ventilation protection structure to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A coal mine ventilation and protection structure includes a first wind tube, a fan is arranged inside the first wind tube, and a second wind tube is arranged at the other end of the first wind tube through a telescopic ventilation component, the second wind tube is L-shaped, and has a rain protection effect, and a dustproof net is arranged at the bottom of the second wind tube, the telescopic ventilation component is arranged inside the other end of the first wind tube, and the telescopic ventilation component is adjusted inside and outside according to usage requirements, so as to improve the ventilation effect.

[0008] Preferably, the telescopic ventilation assembly includes a cylindrical filter, a connecting rod and an electric telescopic rod, one end of the cylindrical filter is fixedly mounted on one end of the second air cylinder, and a connecting rod is provided at the center of the inner side of the other end of the cylindrical filter, both ends of the connecting rod are connected and fixed to the output end of the electric telescopic rod symmetrically arranged inside the first air cylinder, and the cylindrical filter and the second air cylinder are driven telescopically by synchronous driving of the electric telescopic rod.

[0009] Preferably, a limit plate is integrally provided on the outer side of the other end of the cylindrical filter screen, and the limit plate is slidably connected to a limit slide groove provided on the inner side of the first air duct, and is used for limiting support of telescopic adjustment of the cylindrical filter screen inside and outside the first air duct.

[0010] Preferably, a fixed sleeve is provided on the outer side of the other end of the first air cylinder, one side of the fixed sleeve is fixedly installed on the outer side of the other end of the first air cylinder, and an annular cleaning brush is provided on the inner side of the other side of the fixed sleeve, the annular cleaning brush is in contact with the surface of the cylindrical filter net, and is used for cleaning the surface dust and impurities during the extension and contraction adjustment of the cylindrical filter net.

[0011] Preferably, a sealing sleeve is provided on the outer side of one end of the second wind tube, and the inner side of the sealing sleeve is slidably connected to the outer side of the fixing sleeve, thereby improving the sealing performance of the connection between the first wind tube and the second wind tube and further improving the rainproof effect.

[0012] Preferably, a mounting flange is provided at one end of the first air duct, and the mounting flange is used to fix the first air duct on the outside of the ventilation duct.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By arranging a telescopic ventilation assembly and an L-shaped second air duct at the other end of the first air duct, switching ventilation between rainy days and sunny days is achieved, the ventilation effect on sunny days and the rainproof effect on rainy days are improved, thereby achieving the role of rainproof protection for the ventilation of the coal mine. When used on sunny days, the two electric telescopic rods are synchronously driven so that their output shafts push the cylindrical filter net inside the first air duct outward, and the larger filtering and ventilation area of ​​the cylindrical filter net can be used to circulate more air, thereby improving the ventilation effect on sunny days. When used on rainy days, the cylindrical filter net is reset to the inside of the first air duct, and the L-shaped second air duct and the dustproof net at the bottom are used to achieve a normal rainproof ventilation effect, thereby improving the applicability of ventilation in coal mines, thereby improving the ventilation effect and rainproof protection effect;

[0015] 2. A fixing sleeve and an annular cleaning brush are arranged on the outside of the other end of the first air duct, and the annular cleaning brush is installed on the other end of the first air duct through the fixing sleeve, and the annular cleaning brush contacts the surface of the cylindrical filter. During the process of adjusting the cylindrical filter to extend and retract inward and outward, its surface contacts the annular cleaning brush, and the dust and impurities attached to the surface of the cylindrical filter are brushed off by the annular cleaning brush. Through the flow of external air, the dust and impurities fall or flow in the air, thereby realizing automatic cleaning of the cylindrical filter and ensuring the subsequent ventilation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the cylindrical filter screen extending out for ventilation of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the first wind tube and the second wind tube connected to each other to prevent rain in the utility model;

[0018] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 4 For the utility model Figure 3 The middle part is an enlarged structural diagram.

[0020] In the figure: 1. first air duct; 2. mounting flange; 3. fan; 4. second air duct; 5. dust screen; 6. telescopic ventilation assembly; 601. cylindrical filter screen; 602. connecting rod; 603. electric telescopic rod; 7. limit plate; 8. limit slide groove; 9. fixing sleeve; 10. annular cleaning brush; 11. sealing sleeve. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] Embodiment 1:

[0024] A coal mine ventilation protection structure includes a first wind tube 1. A mounting flange 2 is provided at one end of the first wind tube 1. The mounting flange 2 is used to fix the first wind tube 1 on the outside of a ventilation duct. A fan 3 is provided inside the first wind tube 1. A second wind tube 4 is provided at the other end of the first wind tube 1 through a telescopic ventilation component 6. The second wind tube 4 is L-shaped to provide protection against rain. A dustproof net 5 is provided at the bottom of the second wind tube 4. The telescopic ventilation component 6 is provided inside the other end of the first wind tube 1. The telescopic ventilation component 6 is adjusted inside and outside according to usage requirements to improve the ventilation effect.

[0025] The telescopic ventilation assembly 6 includes a cylindrical filter 601, a connecting rod 602 and an electric telescopic rod 603. One end of the cylindrical filter 601 is fixedly installed on one end of the second air duct 4, and a connecting rod 602 is arranged at the center of the inner side of the other end of the cylindrical filter 601. The two ends of the connecting rod 602 are connected and fixed to the output ends of the electric telescopic rod 603 symmetrically arranged inside the first air duct 1. The cylindrical filter 601 and the second air duct 4 are driven telescopically by the synchronous drive of the electric telescopic rod 603.

[0026] By arranging a telescopic ventilation assembly 6 and an L-shaped second wind tube 4 at the other end of the first wind tube 1, switching ventilation between rainy days and sunny days can be achieved, thereby improving the ventilation effect on sunny days and the rainproof effect on rainy days, thereby achieving a rainproof protection effect for the ventilation of the coal mine. When used on sunny days, by synchronously driving the two electric telescopic rods 603, the output shafts thereof push the cylindrical filter screen 601 inside the first wind tube 1 outward, and utilizing the larger filtering and ventilation area of ​​the cylindrical filter screen 601, more air can be circulated, thereby improving the ventilation effect on sunny days. When used on rainy days, the cylindrical filter screen 601 is reset to the inside of the first wind tube 1, and the L-shaped second wind tube 4 and the dustproof net 5 at the bottom are utilized to achieve a generally normal rainproof ventilation effect, thereby improving the applicability of coal mine ventilation, thereby improving the ventilation effect and the rainproof protection effect.

[0027] A limit plate 7 is integrally arranged on the outer side of the other end portion of the cylindrical filter 601, and the limit plate 7 is slidably connected to the limit slide groove 8 opened on the inner side of the first air duct 1, and is used for limiting support of the cylindrical filter 601 for telescopic adjustment inside and outside the first air duct 1. By arranging the limit plate 7 and the limit slide groove 8, it is achieved that in the process of the electric telescopic rod 603 driving the cylindrical filter 601 to perform telescopic adjustment, the limit plate 7 is ensured to slide in the limit slide groove 8, and the cylindrical filter 601 is prevented from sliding out of the first air duct 1, and the function of limiting support movement of the cylindrical filter 601 is performed to ensure stability during the telescopic adjustment process.

[0028] Embodiment 2:

[0029] Based on embodiment one, different from embodiment one, a fixing sleeve 9 is provided on the outer side of the other end of the first air duct 1, one side of the fixing sleeve 9 is fixedly installed on the outer side of the other end of the first air duct 1, and an annular cleaning brush 10 is provided on the inner side of the other side of the fixing sleeve 9. The annular cleaning brush 10 contacts the surface of the cylindrical filter 601 and is used for cleaning the surface dust and impurities during the extension and contraction adjustment of the cylindrical filter 601.

[0030] A sealing sleeve 11 is provided on the outer side of one end of the second wind tube 4, and the inner side of the sealing sleeve 11 is slidably connected to the outer side of the fixed sleeve 9, thereby improving the sealing performance of the docking between the first wind tube 1 and the second wind tube 4 and further improving the rainproof effect. By providing the sealing sleeve 11 on the outer side of the second wind tube 4, the docking between the first wind tube 1 and the second wind tube 4 is rainproof, and at the same time, the sealing sleeve 11 is sleeved on the outer side of the fixed sleeve 9 to improve the rainproof effect of the docking point.

[0031] A fixing sleeve 9 and an annular cleaning brush 10 are arranged on the outside of the other end of the first air cylinder 1, and the annular cleaning brush 10 is installed on the other end of the first air cylinder through the fixing sleeve 9, and the annular cleaning brush 10 contacts the surface of the cylindrical filter 601. During the process of the cylindrical filter 601 being adjusted inward and outward, its surface contacts the annular cleaning brush 10, and the dust and impurities attached to the surface of the cylindrical filter 601 are brushed off by the annular cleaning brush 10. Through the flow of external air, the dust and impurities fall or flow in the air, thereby realizing automatic cleaning of the cylindrical filter 601 and ensuring the subsequent ventilation effect.

[0032] Working principle: First, the coal mine is ventilated by driving the fan 3. When the coal mine ventilation device is used on sunny days, the two electric telescopic rods 603 are synchronously driven so that their output shafts push the cylindrical filter 601 inside the first air tube 1 outward. The larger filtering and ventilation area of ​​the cylindrical filter 601 and the ventilation of the L-shaped second air tube 4 can circulate more air, thereby improving the ventilation effect on sunny days. When used on rainy days, the cylindrical filter 601 is reset and stored in the interior of the first air tube 1 by driving the electric telescopic rod 603, and the L-shaped second air tube 4 and the dustproof net 5 at the bottom are used to achieve a normal rainproof ventilation effect, thereby improving the applicability of coal mine ventilation, thereby improving the ventilation effect and rainproof protection effect. In the process of using the electric telescopic rod 603 to drive the cylindrical filter 601 to telescope in and out, the surface of the cylindrical filter 601 contacts and rubs with the annular cleaning brush 10, thereby realizing the function of cleaning dust and impurities and ensuring the ventilation effect of the cylindrical filter 601.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal mine ventilation protection structure, comprising a first air duct (1), characterized in that: The first air duct (1) is provided with a fan (3) inside, and the other end of the first air duct (1) is provided with a second air duct (4) via a telescopic ventilation component (6); the second air duct (4) is L-shaped and has a rainproof protective effect, and a dustproof net (5) is provided at the bottom of the second air duct (4); the telescopic ventilation component (6) is arranged inside the other end of the first air duct (1), and the telescopic ventilation component (6) is adjusted inside and outside according to usage requirements, thereby improving the ventilation effect.

2. A coal mine ventilation protection structure according to claim 1, characterized in that: The telescopic ventilation assembly (6) comprises a cylindrical filter screen (601), a connecting rod (602) and an electric telescopic rod (603); one end of the cylindrical filter screen (601) is fixedly mounted on one end of the second air cylinder (4); a connecting rod (602) is arranged at the center of the inner side of the other end of the cylindrical filter screen (601); both ends of the connecting rod (602) are connected and fixed to the output ends of the electric telescopic rod (603) symmetrically arranged inside the first air cylinder (1); the cylindrical filter screen (601) and the second air cylinder (4) are driven by the synchronous driving of the electric telescopic rod (603) to perform telescopic adjustment.

3. A coal mine ventilation protection structure according to claim 2, characterized in that: A limit plate (7) is integrally provided on the outer side of the other end of the cylindrical filter screen (601); the limit plate (7) is slidably connected to a limit slide groove (8) provided on the inner side of the first air duct (1), and is used for limit support of the cylindrical filter screen (601) for telescopic adjustment inside and outside the first air duct (1).

4. A coal mine ventilation protection structure according to claim 1, characterized in that: A fixing sleeve (9) is arranged on the outside of the other end of the first air cylinder (1), one side of the fixing sleeve (9) is fixedly mounted on the outside of the other end of the first air cylinder (1), and an annular cleaning brush (10) is arranged on the inside of the other side of the fixing sleeve (9), the annular cleaning brush (10) is in contact with the surface of the cylindrical filter screen (601), and is used for cleaning dust and impurities on the surface of the cylindrical filter screen (601) during the process of adjusting the extension and contraction of the cylindrical filter screen (601).

5. A coal mine ventilation protection structure according to claim 1, characterized in that: A sealing sleeve (11) is provided on the outside of one end of the second wind tube (4), and the inner side of the sealing sleeve (11) is slidably connected to the outer side of the fixing sleeve (9), thereby improving the sealing performance of the connection between the first wind tube (1) and the second wind tube (4), and further improving the rainproof effect.

6. A coal mine ventilation protection structure according to claim 1, characterized in that: A mounting flange (2) is provided at one end of the first air duct (1), and the mounting flange (2) is used to fix the first air duct (1) on the outside of the ventilation duct.

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