Air return inclined shaft capable of increasing air speed

Abstract

The utility model discloses an air return inclined shaft capable of increasing air speed, which relates to the technical field of air return shafts and comprises a U-shaped roadway, a pedestrian passage is arranged in the U-shaped roadway, a ladder compartment is arranged at one end of the pedestrian passage, the pedestrian passage comprises a top plate A and a vertical plate B, and the top plate A and the vertical plate B are connected and vertically arranged in the U-shaped roadway. One side of the top plate A is connected with the inner side wall of the U-shaped roadway, the bottom of the vertical plate B is connected with the inner bottom of the U-shaped roadway, L-shaped connecting pieces and U-shaped connecting pieces are arranged at the connecting positions of the U-shaped roadway, the top plate A and the vertical plate B, the L-shaped connecting pieces and the U-shaped connecting pieces are arranged at the two ends of the pedestrian passage, and one sides of the two L-shaped connecting pieces are connected with the U-shaped roadway; according to the utility model, through the closed glass fiber reinforced plastic pedestrian passage, the problem that the wind speed exceeds the limit when the return air inclined shaft is used as a personnel emergency exit is solved, the safe passage of personnel in the mine is ensured, the wind speed in the mine is obviously improved by introducing the ventilator, and the ventilation effect is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a return air shaft technical field, concretely is a return air inclined shaft of promoting wind speed. BACKGROUND

[0002] The return air inclined shaft is a kind of special ventilation facilities, mainly used to support the ventilation system in the coal mining operation, it is located in the central or specific location of mine, can connect multiple roadways, hot air and toxic gas is discharged to the ground, to ensure the air circulation in the mine, guarantee the health and safety of operating personnel, in addition, return air inclined shaft can also be used as the passageway of mine rescue, evacuate personnel and materials in emergency.

[0003] To solve the problem that the cross section of the existing return air inclined shaft is small, the ventilation capacity is insufficient, it is proposed to improve the capacity by slotting the return air shaft floor, adding return air inclined shaft in parallel to the existing return air inclined shaft, installing pedestrian passage in the return air inclined shaft, etc., since the existing shaft is supported by stone lining, slotting the floor will affect the stress of shaft surrounding rock, which has certain influence on the existing shaft support, especially when the return air inclined shaft passes through sand layer section, the influence is larger, adding return air inclined shaft has large rock shaft engineering quantity, long construction period, and there is a suspicion of multiple shafts returning air. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a return air inclined shaft of promoting wind speed to solve the problems in the above background.

[0005] To solve the above technical problems, the utility model provides a return air inclined shaft of promoting wind speed, which comprises a U-shaped roadway, a pedestrian passage is arranged in the U-shaped roadway, one end of the pedestrian passage is provided with a ladder room, the pedestrian passage comprises a roof A-shaped plate and a vertical plate B-shaped plate, the roof A-shaped plate and the vertical plate B-shaped plate are connected and vertically arranged in the U-shaped roadway, one side of the roof A-shaped plate is connected with the inner side wall of the U-shaped roadway, the bottom of the vertical plate B-shaped plate is connected with the bottom of the U-shaped roadway, L-shaped connectors and U-shaped connectors are arranged at the connecting positions of the U-shaped roadway and the roof A-shaped plate and the vertical plate B-shaped plate, the L-shaped connectors and the U-shaped connectors are arranged at both ends of the pedestrian passage, one side of the two L-shaped connectors is connected with the U-shaped roadway, and the other side is connected with the side wall of the roof A-shaped plate and the vertical plate B-shaped plate respectively, a C-shaped mounting plate is arranged at the other side of the pedestrian passage in the U-shaped roadway, the C-shaped mounting plate comprises two horizontally arranged horizontal ends and a vertical end connected with the horizontal ends, the vertical end is fixedly connected with the inner side wall of the U-shaped roadway, a fan is arranged on the upper horizontal end, and a water pipe connecting roller is arranged on the lower horizontal end, a fire-fighting sprinkler pipe is wound around the water pipe connecting roller.

[0006] Further, the fan is connected with a compressed air pipe, one end of the compressed air pipe is mounted on the inner side wall of the U-shaped roadway, and the fan is an FBCDZ-№24 / 2×355 type counter-rotating axial flow fan.

[0007] Further, the top plate A type and the vertical plate B type are glass steel materials, the top plate A type and the vertical plate B type primer materials are machine zinc paint, the top plate A type and the vertical plate B type finish materials are epoxy asphalt paint, the size of the top plate A type is 1200*1000mm, and the size of the vertical plate B type is 2300*1000mm.

[0008] Further, the top plate A type and the vertical plate B type are glass steel materials, the top plate A type and the vertical plate B type primer materials are machine zinc paint, the top plate A type and the vertical plate B type finish materials are epoxy asphalt paint, the size of the top plate A type is 1200*1000mm, and the size of the vertical plate B type is 2300*1000mm.

[0009] Further, the U-shaped tunnel is provided with a step at one end of the ladder room, the height of the step is 300mm, and a water tank parallel to the side wall of the U-shaped tunnel is formed in the bottom of the U-shaped tunnel below the fire-fighting sprinkler pipe, and the width of the water tank is 250mm.

[0010] Further, the U-shaped tunnel has a thickness of 350mm and a cross-sectional width of 4000mm.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The closed glass steel pedestrian passage solves the problem of wind speed overrun of the return air inclined shaft as a personnel safety outlet, ensures the safe passage of personnel in the mine, significantly improves the wind speed in the mine by introducing the ventilator, optimizes the ventilation effect, and provides a better working environment for the mine.

[0013] 2. The top plate A type and the vertical plate B type are made of glass steel material, which is light in weight, high in strength, corrosion-resistant and wear-resistant, and is very suitable for use in humid and corrosive environments such as mines, the glass steel structure is subjected to corrosion-resistant treatment of organic zinc paint and epoxy asphalt paint, further enhances the corrosion resistance in the humid and complex conditions in the mine, and prolongs the service life and safety of the pedestrian passage. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the main body structure of the return air inclined shaft for improving wind speed.

[0015] Figure 2 It is a schematic view of the main body structure of the return air inclined shaft for improving wind speed. Figure 1 It is an enlarged view of the middle A.

[0016] Figure 3 It is a schematic view of the structure of the L-shaped connecting piece and the U-shaped connecting piece of the return air inclined shaft for improving wind speed.

[0017] Figure 4 It is a rear view of the return air inclined shaft for improving wind speed.

[0018] In the drawings:

[0019] 1, U-shaped tunnel; 2, roof A type; 3, vertical plate B type; 4, ladder room; 5, step; 6, fan; 7, compressed air pipe; 8, C-shaped mounting plate; 9, water pipe connecting roller; 10, fire sprinkler; 11, water tank; 12, L-shaped connecting piece; 13, U-shaped connecting piece; 14, nut; 15, mounting hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0021] Please refer to Figures 1-4 The present application provides a technical solution:

[0022] Please refer to Figure 1 and Figure 2 , a backwind inclined shaft for improving wind speed, comprising a U-shaped tunnel 1, a pedestrian passage is arranged in the U-shaped tunnel 1, one end of the pedestrian passage is provided with a ladder room 4, the pedestrian passage comprises a roof A type 2 and a vertical plate B type 3, the roof A type 2 and the vertical plate B type 3 are connected and vertically arranged in the U-shaped tunnel 1, one side of the roof A type 2 is connected with the inner side wall of the U-shaped tunnel 1, the bottom of the vertical plate B type 3 is connected with the bottom of the U-shaped tunnel 1, the connection positions of the U-shaped tunnel 1 and the roof A type 2 and the vertical plate B type 3 are provided with L-shaped connecting pieces 12 and U-shaped connecting pieces 13, the L-shaped connecting pieces 12 and the U-shaped connecting pieces 13 are arranged at both ends of the pedestrian passage, one side of the two L-shaped connecting pieces 12 is connected with the U-shaped tunnel 1, and the other side is respectively connected with the side wall of the roof A type 2 and the vertical plate B type 3, a C-shaped mounting plate 8 is arranged at the other side of the pedestrian passage in the U-shaped tunnel 1, the C-shaped mounting plate 8 is divided into two horizontally symmetrical horizontal ends and a vertical end connected with the two horizontal ends, the vertical end is fixedly connected with the inner side wall of the U-shaped tunnel 1, the upper horizontal end is provided with a fan 6, and the lower horizontal end is provided with a water pipe connecting roller 9, the water pipe connecting roller 9 is wound with a fire sprinkler 10.

[0023] In the implementation process, the setting of the pedestrian passage solves the problem of wind speed exceeding the limit of the return air inclined shaft as a personnel safety exit, ensures the safe passage of personnel, optimizes the ventilation effect in the mine, and the junctions of the U-shaped roadway 1 and the roof A-shaped 2 and the vertical plate B-shaped 3 are provided with L-shaped connecting pieces 12 and U-shaped connecting pieces 13, which are respectively arranged at both ends of the pedestrian passage, and the roof A-shaped 2 and the vertical plate B-shaped 3 are firmly connected with the U-shaped roadway 1 through the connecting pieces, so as to realize all-around fixing and supporting. The fan 6 is a key equipment for improving the wind speed, and the air flow in the mine can be accelerated through the operation of the fan 6, so as to improve the ventilation condition. The design of the fire-fighting sprinkler pipe 10 not only provides necessary fire-fighting facilities for the mine, but also ensures that the sprinkling can be quickly carried out in an emergency, so as to improve the safety of the mine.

[0024] Referring to Figure 1 and Figure 4 , a return air inclined shaft for improving the wind speed is shown, the fan 6 is connected with the pressure air pipe 7, one end of the pressure air pipe 7 is installed on the inner side wall of the U-shaped roadway 1, and the fan 6 is a FBCDZ-№24 / 2×355 type counter-rotating axial flow fan. In the implementation process, the fan 6 is fixedly installed on the C-shaped mounting plate 8, and the pressure air pipe 7 is firmly installed on the inner side wall of the U-shaped roadway 1 by using an expansion plug.

[0025] It should be noted that: the return air inclined shaft selects two FBCDZ-№24 / 2×355 type counter-rotating axial flow fans, one works and the other is standby, the fan 6 has a wind range of 92-198 m 3 / s, a wind pressure range of 1130-3900 Pa, and a ventilation capacity (wind volume and wind pressure) that is obviously improved, which can meet the demand of the return air inclined shaft for the ventilation capacity after expansion, and sufficient safety redundancy is reserved.

[0026] Referring to Figure 1 , a return air inclined shaft for improving the wind speed is shown, the roof A-shaped 2 and the vertical plate B-shaped 3 are made of glass steel, the primer of the roof A-shaped 2 and the vertical plate B-shaped 3 is made of machine zinc paint, and the finish paint is made of epoxy asphalt paint. The size of the roof A-shaped 2 is 1200*1000 mm, and the size of the vertical plate B-shaped 3 is 2300*1000 mm. In the implementation process, the glass steel is a kind of composite material with light weight, high strength, corrosion resistance and wear resistance, which is very suitable for humid and corrosive environments such as mines. Its excellent physical properties and chemical stability enable the roof A-shaped 2 and the vertical plate B-shaped 3 to maintain the integrity and stability of the structure during long-term use, thereby ensuring the safe operation of the return air inclined shaft. The primer is made of organic zinc paint, and the finish paint is made of epoxy asphalt paint, which can ensure the corrosion resistance of the structural parts in the humid and complex conditions underground, and ensure the service life and safety of the pedestrian passage.

[0027] Referring to Figure 2 and Figure 3As shown, a kind of back air inclined shaft of wind speed, the lower half of U-shaped connecting piece 13 is provided with thread, U-shaped connecting piece 13 is inserted with L-shaped connecting piece 12, the upper half of one end of U-shaped connecting piece 13 is connected with top plate A type 2 and vertical plate B type 3, the lower half of U-shaped connecting piece 13 is connected with nut 14, limit block is installed in the middle of U-shaped connecting piece 13, installation hole 15 is formed in the side of L-shaped connecting piece 12 and U-shaped roadway 1.In the specific implementation process, the lower half of U-shaped connecting piece 13 is provided with thread, which makes U-shaped connecting piece 13 can be closely matched with nut 14, realizes firm fixation, the opening part of U-shaped connecting piece 13 can be inserted with the corresponding part of L-shaped connecting piece 12, forms stable connection structure, the function of limit block is to limit the movement of U-shaped connecting piece 13 in the process of connection, ensure the accuracy and stability of connection, installation hole 15 is used to fix L-shaped connecting piece 12 in the corresponding position of U-shaped roadway 1, ensure the stable connection of connecting piece and roadway.

[0028] Referring to Figure 1 As shown, a kind of back air inclined shaft of wind speed, the lower half of U-shaped connecting piece 13 is provided with thread, U-shaped connecting piece 13 is inserted with L-shaped connecting piece 12, the upper half of one end of U-shaped connecting piece 13 is connected with top plate A type 2 and vertical plate B type 3, the lower half of U-shaped connecting piece 13 is connected with nut 14, limit block is installed in the middle of U-shaped connecting piece 13, installation hole 15 is formed in the side of L-shaped connecting piece 12 and U-shaped roadway 1.In the specific implementation process, the lower half of U-shaped connecting piece 13 is provided with thread, which makes U-shaped connecting piece 13 can be closely matched with nut 14, realizes firm fixation, the opening part of U-shaped connecting piece 13 can be inserted with the corresponding part of L-shaped connecting piece 12, forms stable connection structure, the function of limit block is to limit the movement of U-shaped connecting piece 13 in the process of connection, ensure the accuracy and stability of connection, installation hole 15 is used to fix L-shaped connecting piece 12 in the corresponding position of U-shaped roadway 1, ensure the stable connection of connecting piece and roadway.

[0029] In the specific implementation process, the main function of water tank 11 is to collect water from fire sprinkler pipe 10 or leaked water, and its width is moderate, which can ensure that the accumulated water can flow into water tank 11 and be collected smoothly, so as to avoid the adverse effects of accumulated water on the ventilation efficiency and safety of the inclined shaft.

[0030] Working principle:

[0031] Step one: the pedestrian passage is composed of top plate A type 2 and vertical plate B type 3, which are vertically arranged in U-shaped roadway 1, providing a safe and stable passing space for personnel, top plate A type 2 and vertical plate B type 3 are firmly connected with U-shaped roadway 1 through L-shaped connecting piece 12 and U-shaped connecting piece 13, L-shaped connecting piece 12 is connected with the side wall of U-shaped roadway 1, and U-shaped connecting piece 13 is connected with the side wall of top plate A type 2 and vertical plate B type 3, and is fastened through nut 14.

[0032] Step two: fan 6 is the key equipment to improve wind speed, which is installed on C-shaped mounting plate 8 and connected with U-shaped roadway 1 through pressure pipe 7, when fan 6 operates, it will produce strong suction or thrust, accelerate the air flow in the mine, and this flowing air can effectively carry away harmful gases and dust in the mine, improve the ventilation conditions of the mine.

[0033] Step three: the fire sprinkler 10 is installed along one side of the U-shaped tunnel 1, providing the mine with necessary fire-fighting facilities. In an emergency, the sprinkler system can be quickly started to spray water for fire extinguishing. The water tank 11 is located below the fire sprinkler 10 to collect accumulated water or leaked water from the sprinkler, so as to avoid the adverse effects of accumulated water on the ventilation efficiency and safety of the inclined shaft. At the same time, the water tank 11 also facilitates the cleaning and treatment of accumulated water.

Claims

1. A return air inclined shaft for increasing the wind speed, characterized in that, The utility model provides a kind of U-shaped tunnel (1), the U-shaped tunnel (1) is equipped with pedestrian passage, one end of pedestrian passage is equipped with ladder room (4), pedestrian passage includes roof A type (2) and vertical plate B type (3), the roof A type (2) and vertical plate B type (3) are connected and vertically arranged in U-shaped tunnel (1), one side of roof A type (2) is connected with the inner side wall of U-shaped tunnel (1), the bottom of vertical plate B type (3) is connected with the bottom in U-shaped tunnel (1), the connecting place of U-shaped tunnel (1) and roof A type (2) and vertical plate B type (3) is equipped with L-shaped connecting piece (12) and U-shaped connecting piece (13), L-shaped connecting piece (12) and U-shaped connecting piece (13) are arranged in both ends of pedestrian passage, one side of two L-shaped connecting pieces (12) is connected with U-shaped tunnel (1), and the other side is respectively connected with the side wall of roof A type (2) and vertical plate B type (3), C-shaped mounting plate (8) is installed in the other side of U-shaped tunnel (1) in pedestrian passage, the C-shaped mounting plate (8) is divided into two horizontally symmetrical horizontal ends and two vertical ends connected with horizontal end, vertical end is fixedly connected with the inner side wall of U-shaped tunnel (1), the upper horizontal end is equipped with fan (6), and the lower horizontal end is equipped with water pipe connecting roller (9), and fire-fighting sprinkler pipe (10) is wound around water pipe connecting roller (9).

2. A return air inclined shaft for increasing the air velocity as claimed in claim 1, characterized in that: The fan (6) is connected with the compressed air pipe (7), one end of the compressed air pipe (7) is installed on the inner side wall of the U-shaped tunnel (1), and the fan (6) is an FBCDZ-№24 / 2×355 type counter-rotating axial flow fan.

3. A return air inclined shaft for increasing the air velocity as claimed in claim 2, characterized in that: The roof A type (2) and vertical plate B type (3) are made of glass steel, the primer of the roof A type (2) and vertical plate B type (3) is made of machine zinc paint, and the finish is made of epoxy asphalt paint, the size of the roof A type (2) is 1200*1000mm, and the size of the vertical plate B type (3) is 2300*1000mm.

4. A return air inclined shaft for increasing the air velocity as claimed in claim 3, characterized in that: The lower half of the U-shaped connecting piece (13) is provided with a thread, the U-shaped connecting piece (13) is inserted into the L-shaped connecting piece (12), the upper half of one end of the U-shaped connecting piece (13) is connected with the roof A type (2) and the vertical plate B type (3), the lower half of the U-shaped connecting piece (13) is connected with a nut (14), a limiting block is installed in the middle of the U-shaped connecting piece (13), and a mounting hole (15) is formed in the side of the L-shaped connecting piece (12) connected with the U-shaped tunnel (1).

5. A return air inclined shaft for increasing the air velocity as claimed in claim 4, wherein: The bottom of one end of the U-shaped tunnel (1) close to the ladder room (4) is provided with a step (5), the height of the step (5) is 300mm, a water tank (11) parallel to the side wall of the U-shaped tunnel (1) is formed in the bottom of the U-shaped tunnel (1) below the fire-fighting sprinkler pipe (10), and the width of the water tank (11) is 250mm.

6. A return air inclined shaft for increasing the air velocity as claimed in claim 5, characterized in that: The thickness of the U-shaped tunnel (1) is 350mm, and the cross-sectional width is 4000mm.

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