Device for conveying cold air by stages in access linking way during access type stoping

Abstract

The utility model relates to a device for conveying cold air by stages in an access connection way during access type stoping, which comprises a main conveying pipe and a roadway, a plurality of local fans are arranged in the roadway, the main conveying pipe is buried in a pre-buried ditch at the bottom of the roadway, one end of the main conveying pipe is sealed, and the other end of the main conveying pipe is connected with an external refrigeration air duct through an air inlet port after being bent upwards. A plurality of branch pipe joints are arranged on the main conveying pipe in the length direction of the main conveying pipe, branch pipes or sealing covers are arranged on the branch pipe joints, and the upper ends of the branch pipes are located at an inlet of the local fan. One refrigeration device simultaneously distributes cold air to a plurality of access paths in a centralized and convenient manner; cold air conveying of a first-step route and a second-step route during route type stoping can be respectively controlled through the branch pipe joint and the sealing cover; the conveying pipeline is buried in a roadway bottom plate, the situations of vehicle collision and air duct overlapping in a roadway can be reduced to the maximum extent, the whole device can be repeatedly used, and the local ventilation and refrigeration cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gold mine ventilation, in particular to a device for conveying cold air in stages through an approach connecting channel during approach type mining. Background Art

[0002] When deep-well metal mines adopt the approach mining method, the temperature in the approach is high, and cooling and ventilation are required to cool it down. At present, centralized cooling and local fan cooling are mainly adopted, that is, after centralized cooling near the mining site, multiple local fans are set up at the air outlet, and the local fans are introduced into each approach through the wind tube. Since each approach needs to be equipped with local fans and wind tubes, and the space of the main tunnel outside the mining site is limited, the number of cooling approaches is limited, the layout of the on-site wind tubes is chaotic, and vehicles are seriously scratched. In addition, when the first-step mining is transferred to the second-step mining, the adjustment is cumbersome. Utility Model Content

[0003] In order to solve the problems in the prior art of limited number of cooling routes in route-type mining, chaotic layout of cold air ducts in large tunnels, and cumbersome adjustments when switching from one-step mining to two-step mining, the utility model provides a device for conveying cold air in stages through route connecting channels in route-type mining.

[0004] The technical solution of the utility model to solve the above-mentioned technical problems is as follows: a device for conveying cold air in stages through an access connecting channel during access-type mining, comprising a main conveying pipe and a tunnel, wherein a plurality of local fans are arranged in the tunnel, wherein the main conveying pipe is buried in a pre-buried trench at the bottom of the tunnel, wherein one end of the main conveying pipe is sealed, and the other end is bent upward and connected to an external refrigeration air duct through an air inlet interface, wherein a plurality of branch pipe joints are arranged on the main conveying pipe, and the plurality of branch pipe joints are arranged along the length direction of the main conveying pipe, wherein a branch pipe or a sealing cover is arranged on the branch pipe joint, and the upper end of the branch pipe is located at the entrance of the local fan.

[0005] On the basis of the above technical solution, the present invention can also make the following improvements to the above technical solution:

[0006] Preferably, a plurality of access connecting channels are provided in the laneway, and the branch pipe joint is arranged at the center line of the access connecting channels.

[0007] Preferably, the main delivery pipe and the branch pipe joint are both steel pipes, and the branch pipe joint is welded to the main delivery pipe.

[0008] Preferably, the branch pipe joint is detachably connected to the branch pipe or the sealing cover via threads.

[0009] Preferably, the branch pipe joint is provided with an external thread, a limiting ring is provided at the lower end of the external thread, and a sealing gasket is sleeved on the limiting ring.

[0010] Preferably, the sealing cover is buried in the bottom surface of the tunnel, and the distance between the sealing cover and the bottom surface is greater than or equal to 10 cm.

[0011] Preferably, the air inlet interface is a rubber ring sleeved on the main delivery pipe.

[0012] Preferably, the access connection channel includes a one-step access connection channel and a two-step access connection channel, the branch pipe joint of the one-step access connection channel is provided with a branch pipe or a sealing cover, and the branch pipe joint of the two-step access connection channel is provided with a sealing cover or a branch pipe.

[0013] The beneficial effects of the utility model are as follows: a main delivery pipe is pre-buried at the bottom of the tunnel, a plurality of branch pipe joints are arranged on the main delivery pipe, and the main delivery pipe is connected to an external refrigeration duct through an air inlet interface, so that one refrigeration device can simultaneously and conveniently distribute cold air to multiple inlets; at the same time, the branch pipe joints and the sealing covers can respectively control the cold air delivery of the one-step inlet and the two-step inlet during inlet-type recovery, so that when the one-step inlet is recovered, all the cold air is gathered at the local fan at the one-step inlet connecting road entrance, and when the two-step inlet is recovered, all the cold air is gathered at the local fan at the two-step inlet connecting road entrance, and the adjustment is convenient and quick; the delivery pipeline is buried in the tunnel floor to minimize vehicle collisions and overlapping of ducts in the tunnel, and the whole set of equipment can be reused, which greatly reduces the cost of local ventilation and refrigeration. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a top view schematic diagram of the utility model;

[0016] Figure 3 For this utility model Figure 1 A partial enlarged view of the middle II;

[0017] Figure 4 For this utility model Figure 1 A partial enlarged view of point Ⅰ in the middle.

[0018] The accompanying drawings are marked as follows: 1. Main conveying pipe; 2. Branch pipe joint; 3. Limiting ring; 4. Sealing gasket; 5. Branch pipe; 6. Sealing cover; 7. Air inlet interface; 8. Tunnel; 9. First-step access connecting channel; 10. Second-step access connecting channel; 11. Local fan; 12. Pre-buried trench. DETAILED DESCRIPTION

[0019] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0020] like Figures 1 to 4As shown, the utility model discloses a device for conveying cold air in stages through an access connecting channel during access-type mining, comprising a main conveying pipe 1 and a tunnel 8, wherein a plurality of local fans 11 are arranged in the tunnel 8, the main conveying pipe 1 is buried in a pre-buried groove 12 at the bottom of the tunnel 8, one end of the main conveying pipe 1 is sealed, and the other end is bent upward and connected to an external refrigeration air duct through an air inlet interface 7, a plurality of branch pipe joints 2 are arranged on the main conveying pipe 1, and the plurality of branch pipe joints 2 are arranged along the length direction of the main conveying pipe 1, a branch pipe 5 or a sealing cover 6 is arranged on the branch pipe joint 2, and the upper end of the branch pipe 5 is located at the entrance of the local fan 11, and the length of the branch pipe 5 should be determined according to the installation height of the local fan 11 to ensure that the branch pipe 5 can convey the cold air to the vicinity in front of the entrance of the local fan 11 after being connected to the branch pipe joint 2, so as to avoid the loss of cold air.

[0021] In this embodiment, specifically, the branch pipe joint 2 is arranged at the center line of the access channel to ensure the cooling effect on the entire mining field.

[0022] Furthermore, the main delivery pipe 1 and the branch pipe joint 2 are both steel pipes, and the branch pipe joint 2 is welded to the main delivery pipe 1 to ensure the firmness of the connection between the main delivery pipe 1 and the branch pipe joint 2, with simple operation and low cost.

[0023] In this embodiment, the branch pipe joint 2 is detachably connected to the branch pipe 5 or the sealing cover 6 through threads. Specifically, the branch pipe joint 2 is provided with an external thread, a limit ring 3 is provided at the lower end of the external thread, a sealing gasket 4 is sleeved on the limit ring 3, and corresponding internal threads are provided on the branch pipe 5 and the sealing cover 6. The limit ring 3 limits the connection length between the branch pipe 5 and the sealing cover 6 and the branch pipe joint 2, and is sealed through the sealing gasket 4 to reduce cold air leakage and ensure the cooling effect.

[0024] In this embodiment, specifically, the sealing cover 6 is a steel cover, and the sealing cover 6 is buried in the bottom surface of the tunnel 8. The distance between the sealing cover 6 and the bottom surface is greater than or equal to 10 cm, that is, the sealing cover 6 is located 10 cm below the bottom surface, thereby avoiding the situation where the sealing cover 6 is crushed by a vehicle and ensuring the service life of the sealing cover 6.

[0025] In this embodiment, specifically, the air inlet interface 7 is a soft rubber ring sleeved on the main delivery pipe 1. The air inlet interface 7 can be tightly connected to the external centralized refrigeration air cylinder through a wire or a buckle, and the air inlet interface 7 is on the air inlet side of the main delivery pipe 1.

[0026] In this embodiment, the access communication channel includes a plurality of one-step access communication channels 9 and two-step access communication channels 10 arranged at intervals. The branch pipe joint 2 of the one-step access communication channel 9 is provided with a branch pipe 5 or a sealing cover 6, and the branch pipe joint 2 of the two-step access communication channel 10 is provided with a sealing cover 6 or a branch pipe 5.

[0027] When mining in the first-step approach, the branch pipe 5 is installed on the branch pipe joint 2 at the first-step approach connecting channel 9, and the sealing cover 6 is installed on the branch pipe joint 2 at the second-step approach connecting channel 10. Cold air enters the first-step approach connecting channel 9 through the local fan 11 to reduce the working environment temperature in the first-step approach mining field.

[0028] When the two-step access road is used for mining, the positions of the branch pipe 5 and the sealing cover 6 are reversed, so that the cold air enters the two-step access road connecting channel 10 through the local fan 11, thereby reducing the working environment temperature in the two-step access road mining area. Before the reverse operation, the surrounding floor gravel should be cleaned before the reverse operation. After the reverse operation, the gravel should be covered again to prevent the sealing cover 6 from being crushed by vehicles. A mark can be set at the covered position to quickly locate the position of the sealing cover 6.

[0029] The main delivery pipe 1 can be laid to the position of the second inlet at the end. The number of the branch pipe joints 2 is determined according to the cooling air volume, and the number of the branch pipes 5 and sealing covers 6 should also be adjusted accordingly.

[0030] In addition, the pipe diameter specifications of the main conveying pipe 1, branch pipe joint 2, branch pipe 5, and sealing cover 6 can be calculated using existing technology according to the required air volume of the access mining site to ensure the cooling effect, which will not be repeated here.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for conveying cold air in stages through access roads during access mining, characterized in that: The invention comprises a main conveying pipe (1) and a lane (8), wherein a plurality of local fans (11) are arranged in the lane (8), wherein the main conveying pipe (1) is buried in a pre-buried groove (12) at the bottom of the lane (8), wherein one end of the main conveying pipe (1) is sealed, and the other end is bent upward and connected to an external refrigeration air duct through an air inlet interface (7), wherein a plurality of branch pipe joints (2) are arranged on the main conveying pipe (1), wherein the plurality of branch pipe joints (2) are arranged along the length direction of the main conveying pipe (1), wherein a branch pipe (5) or a sealing cover (6) is arranged on the branch pipe joint (2), and the upper end of the branch pipe (5) is located at the entrance of the local fan (11).

2. The device for conveying cold air in stages through access roads during access mining according to claim 1 is characterized in that: A plurality of access connecting channels are arranged in the lane (8), and the branch pipe joint (2) is arranged at the center line of the access connecting channels.

3. The device for conveying cold air in stages through access roads during access mining according to claim 1 is characterized in that: The main delivery pipe (1) and the branch pipe joint (2) are both steel pipes, and the branch pipe joint (2) is welded to the main delivery pipe (1).

4. The device for conveying cold air in stages through access roads during access mining according to claim 3 is characterized in that: The branch pipe joint (2) is detachably connected to the branch pipe (5) or the sealing cover (6) via threads.

5. The device for conveying cold air in stages through access roads during access mining according to claim 4 is characterized in that: The branch pipe joint (2) is provided with an external thread, the lower end of the external thread is provided with a limiting ring (3), and the limiting ring (3) is sleeved with a sealing gasket (4).

6. The device for conveying cold air in stages through access roads during access mining according to claim 2 is characterized in that: The sealing cover (6) is buried in the bottom surface of the tunnel (8), and the distance between the sealing cover (6) and the bottom surface is greater than or equal to 10 cm.

7. The device for conveying cold air in stages through access roads during access mining according to claim 1 is characterized in that: The air inlet interface (7) is a rubber ring sleeved on the main delivery pipe (1).

8. The device for conveying cold air in stages through access roads during access mining according to claim 2 is characterized in that: The access connection channel comprises a one-step access connection channel (9) and a two-step access connection channel (10), the branch pipe joint (2) of the one-step access connection channel (9) being provided with a branch pipe (5) or a sealing cover (6), and the branch pipe joint (2) of the two-step access connection channel (10) being provided with a sealing cover (6) or a branch pipe (5).

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