Air door of air duct of mine underground fan room

Abstract

A mine underground fan room air duct air door comprises a door frame part and a door leaf part, the door frame part comprises two longitudinal fixing columns, and the upper ends and the lower ends of the fixing columns are fixedly connected with transverse fixing beams; the two ends of the fixing beams exceed the fixing columns and are used for being pre-embedded into the left and right wall bodies for reinforcement; a supporting seat plate is fixedly installed on the outer side face of the fixing column, a rotating shaft is installed on the supporting seat plate, the rotating shaft is rotationally connected with a rotating arm, and the rotating arm is fixedly connected with a door leaf part; the door leaf part comprises a door A and a door B, the door A and the door B are each formed by fixedly connecting two longitudinal door leaf frames and two transverse door leaf frames, a plurality of transverse reinforcing square pipes and longitudinal reinforcing square pipes which are perpendicularly and fixedly connected are further fixedly installed in the door A and the door B, the transverse reinforcing square pipes are fixedly connected with rotating arms, and the longitudinal reinforcing square pipes are fixedly connected with the rotating arms. Sealing door plates are fixedly installed outside the door A and the door B. The door B is further provided with a safety door. The mine underground ventilation device is high in overall strength, simple in structure, good in sealing performance and capable of effectively guaranteeing mine underground ventilation efficiency.

Description

Technical Field

[0001] The utility model relates to an underground mine air door, in particular to an air duct air door of an underground mine fan room. Background Art

[0002] As the depth of underground mining and production in mines continues to extend, in order to supply enough fresh air underground, meet the needs of personnel for oxygen, and dilute harmful gases and dust underground, the demand for underground ventilation has increased significantly. In order to ensure the orderly production, it is necessary to install a new main fan to make up for the lack of ventilation. The two newly added main fans are two exhaust systems merged into one main fan duct, and the two main fan exhaust systems need to operate separately. However, when one of the main fan exhaust systems is operated separately, the newly added main fan and its installation space will cause changes in the underground structure, which will have an unexpected impact on the original air path, causing the original ventilation system to become turbulent, reducing ventilation efficiency, and is not conducive to safe production in the mine. This requires adding duct dampers at the inlet of the main fan to allow the underground airflow to flow and distribute along the designated route.

[0003] The dampers currently used are generally installed by fixing with bolts, which cannot withstand large pressure and are easy to deform, and are not suitable for the safety requirements of underground mine operations. At the same time, most of the existing dampers are two-way opening and closing, and the door leaves are connected by hinges, which have the disadvantages of inconvenient maintenance and poor sealing.

[0004] Therefore, an applicable damper with reasonable structure, long service life, small maintenance workload and strong sealing is crucial for the safe and reliable operation of the main fan exhaust system. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an air duct damper for an underground mine fan room, which can withstand greater pressure without deformation, is easy to maintain, and has stronger sealing performance.

[0006] The technical solution of this utility model is as follows:

[0007] A duct damper for an underground mine fan room comprises a door frame part and a door leaf part, characterized in that: the door frame part comprises two longitudinal fixing columns, and the upper and lower ends of the fixing columns are fixedly connected with transverse fixing beams; the two ends of the fixing beams extend beyond the fixing columns and are used to be embedded in the left and right walls for reinforcement; a supporting seat plate is fixedly installed on the outer side of the fixing column, a rotating shaft is installed on the supporting seat plate, the rotating shaft is rotatably connected with a rotating arm, and the rotating arm is fixedly connected with the door leaf part; the door leaf part comprises an A door and a B door, and the A door and the B door are both composed of two longitudinal door leaf frames fixedly connected with two transverse door leaf frames, and a plurality of transverse reinforcement square tubes and longitudinal reinforcement square tubes fixedly connected to each other vertically are also fixedly installed inside the A door and the B door, and the transverse reinforcement square tubes are fixedly connected to the rotating arm, and a sealing door panel is fixedly installed outside the A door and the B door, and a safety door is also provided on the B door.

[0008] Furthermore, a positioning plate is fixedly mounted on the longitudinal door leaf frame where the A door and the B door are in contact, and a plurality of positioning holes with relatively corresponding positions are formed on the positioning plate, and positioning pins can be installed on the positioning holes.

[0009] Furthermore, the safety door is composed of two longitudinal safety door leaf frames and two transverse safety door leaf frames which are fixedly connected, and a safety door reinforcement square tube is fixedly connected between the longitudinal safety door leaf frames; the longitudinal safety door leaf frame of the safety door is rotatably connected to the longitudinal door leaf frame of door B via a safety door hinge, and a safety door sealing door panel is fixedly installed on the outside of the safety door.

[0010] Furthermore, a door lock fixing square steel is fixedly installed on the safety door reinforcement square tube, and the door lock fixing square steel is provided with a through hole, in which a rotatable safety door switch rotating shaft is installed, and a rotating handle is fixedly installed on the safety door switch rotating shaft, and a switch lock plate is also fixedly installed on the safety door switch rotating shaft. When the switch lock plate is horizontal, the length of the switch lock plate exceeds the side edge of the safety door and overlaps with the B door. A lock plate limiting round steel for limiting the switch lock plate is also fixedly installed on the longitudinal safety door leaf frame.

[0011] Furthermore, two upper and lower latch support rings are fixedly installed on the lower end of the outer side of door A, a positioning latch is installed on the latch support ring, a limiting ring for limiting is fixedly installed on the positioning latch, and a hole for inserting the positioning latch is opened on the lower fixed beam.

[0012] Furthermore, a windshield is fixedly installed on the outer side of the door frame part, and the height of the windshield exceeds the inner edge of the door frame part and overlaps with the door leaf part.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] First, the transverse door leaf frame of the utility model is pre-buried inside the walls on both sides, which can provide sufficient supporting force to ensure that the damper is installed firmly as a whole.

[0015] Second, the utility model has a simple structure, the door leaf part and the door frame part are connected by a rotating shaft, and the overall maintenance is convenient.

[0016] Third, the utility model is provided with a positioning plate, a positioning latch and a wind shield to ensure that when the damper is tightly closed, sufficient sealing can be provided to ensure ventilation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the outer side structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the inner side structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the support seat plate of the utility model;

[0020] Figure 4 This is a side view of the structure of the handle portion of the utility model;

[0021] Figure 5 It is a side view structural diagram of the locking part of the safety door of the utility model.

[0022] In the figure: 1. fixed column, 2. fixed beam, 3. horizontal door leaf frame, 4. longitudinal door leaf frame, 5. A door, 6. horizontal reinforcement square tube, 7. longitudinal reinforcement square tube, 8. support seat plate, 8-1. oil injection nozzle, 9. rotating shaft, 9-1. locking pin, 10. rotating arm, 11. positioning plate, 11-1 positioning hole, 12. handle, 13. safety door, 13-1. horizontal safety door leaf frame, 13-2. longitudinal safety door leaf frame, 13 -3. Safety door loose-leaf, 13-4. Safety door reinforcement square tube, 13-5. Door lock fixing square steel, 13-6. Safety door switch rotating shaft, 13-7. Turn handle, 13-8. Switch lock plate, 13-9. Lock plate limiting round steel, 13-10. Safety door sealing door plate, 14. B door, 15. Positioning pin, 15-1. Limiting ring, 16. Pin support ring, 17. Wind deflector, 18. Sealing door plate, 19. Positioning pin. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the embodiments and drawings.

[0024] In this embodiment, the fan is located on the inner side of the damper, and the air duct is located on the outer side of the damper.

[0025] like Figure 1As shown, the utility model includes a door frame part and a door leaf part, the door frame part includes two parallel longitudinal fixing columns 1, two ends of the fixing columns 1 are fixedly connected with two transverse fixing beams 2, both ends of the fixing beams 2 extend beyond the edges of the fixing columns 1, and are used to be embedded in the walls on both sides to enhance the overall stability. In this embodiment, both ends of the fixing beams 2 extend beyond the fixing columns 1 by about 300m.

[0026] like Figure 1 and Figure 3 As shown, a support base plate 8 is fixedly installed on the outer surface of the fixed column 1, and a mounting hole is fixedly provided on the support base plate 8, in which a rotating shaft 9 is installed, and the rotating shaft is rotatably connected with a rotating arm 10; an oiling nozzle 8-1 is also provided on the support base plate, which is used to add lubricating oil to lubricate the support base plate 8 and the rotating shaft 9; a locking pin 9-1 is installed at the lower end of the rotating shaft 9 to prevent the rotating shaft 9 from accidentally falling off, and the rotating arm 10 is fixedly connected to the door leaf part, and the rotating arm 10 adopts a curved arm structure, the purpose of which is to save installation space and avoid collision.

[0027] like Figure 2 As shown, a wind shield 17 is fixedly installed on the outer side surfaces of the two fixed columns 1 and the outer side surfaces of the upper fixed beam 2. The wind shield 17 extends beyond the inner edge of the door frame part and overlaps with the door leaf part. The purpose is to enhance the sealing of the gap between the door frame part and the door leaf part. In this embodiment, the wind shield 17 on the upper fixed beam 2 overlaps and seals with the door leaf part for 60mm, and the wind shield 17 on the two fixed columns 1 overlaps and seals with the door leaf part for 30mm.

[0028] like Figure 1 and Figure 4 As shown, the door leaf part is divided into A door 5 and B door 14, and the A door 5 and B door 14 are both composed of two longitudinal door leaf frames 4 fixedly connected with two transverse door leaf frames 3, and a plurality of vertically fixedly connected transverse reinforcing square tubes 6 and longitudinal reinforcing square tubes 7 are also fixedly installed inside the A door 5 and the B door 14, wherein the transverse reinforcing square tube 6 is fixedly connected with the rotating arm 10; the longitudinal door leaf frames 4 contacting the A door 5 and the B door 14 are respectively provided with positioning plates 11 and handles 12; the positioning plate 11 is also provided with positioning holes 11-1 corresponding to the height position, and the purpose of the positioning holes 11-1 is to be used for installing positioning pins 19 after the A door 5 and the B door 14 are closed to ensure tight closure; the outer sides of the A door 5 and the B door 14 are also fixedly installed with sealing door panels 18.

[0029] like Figure 2As shown, two upper and lower latch support rings 16 are fixedly installed at the lower end of the outer side surface of the A door 5, and a positioning latch 15 that can move up and down is installed on the latch support ring 16. A limiting ring 15-1 is fixedly installed on the positioning latch 15, and the position of the limiting ring 15-1 is located between the two latch support rings 16 to achieve the movable limit of the positioning latch 15. A hole for inserting the positioning latch 15 is opened on the lower fixed beam. When the door leaf is partially closed, the positioning latch 15 moves downward and is inserted into the hole opened on the lower fixed beam to fix the A door 5.

[0030] like Figure 1 and Figure 5 As shown, the outer longitudinal door leaf frame 4 of the B door 14 is rotatably connected to a safety door 13 for personnel to pass through via a safety door hinge 13-3, and the safety door 13 is composed of two longitudinal safety door leaf frames 13-2 and two transverse safety door leaf frames 13-1 that are fixedly connected, and a safety door reinforcement square tube 13-4 is fixedly connected between the longitudinal safety door leaf frames 13-2, and a longitudinal door lock fixing square steel 13-5 is fixedly connected between the safety door reinforcement square tubes 13-4; a through hole is opened in the center of the door lock fixing square steel 13-5, and a rotatable safety door switch rotating shaft 13-6 is installed in the through hole; both ends of the safety door switch rotating shaft 13-6 are fixedly installed There is a rotating handle 13-7, and a switch lock piece 13-8 is fixedly installed at the center position of the safety door switch rotating shaft 13-6. There are two switch lock pieces 13-8, which are respectively located on both sides of the safety door 13. When the switch lock piece 13-8 is in a horizontal position, the switch lock piece 13-8 exceeds the side edge of the safety door 13 and overlaps with the B door 14 to achieve locking of the safety door 13; a horizontal lock piece limiting round steel 13-9 is also fixedly installed on the inner longitudinal safety door leaf frame 13-2, the purpose of which is to limit the switch lock piece 13-8 when it is in a horizontal position; a safety door sealing door panel 13-10 is fixedly installed on the outside of the safety door 13.

[0031] After the utility model is installed, if the fan needs to be started, the A door 5 and the B door 14 are opened, and then the fan is turned on.

[0032] After the fan is used, turn off the fan, close the A door 5 and the B door 13, insert the positioning pin 15 into the hole of the lower fixed beam 2, and the personnel pass through the safety door 13 and insert the positioning pin 19 into the positioning hole 11-1 to ensure that the damper is tightly closed.

Claims

1. A duct damper for a mine underground fan room, comprising a door frame part and a door leaf part, characterized in that: The door frame portion comprises two longitudinal fixed columns (2), the upper and lower ends of the fixed columns (2) being fixedly connected to transverse fixed beams (1); the two ends of the fixed beams (1) extend beyond the fixed columns (2) and are used to be embedded in the walls on the left and right sides for reinforcement; a support seat plate (8) is fixedly mounted on the outer side surface of the fixed column (2), a rotating shaft (9) is mounted on the support seat plate (8), the rotating shaft (9) is rotatably connected to a rotating arm (10), and the rotating arm (10) is fixedly connected to a door leaf portion; the door leaf portion comprises an A door (5) The A door (5) and the B door (14) are both composed of two longitudinal door leaf frames (4) and two transverse door leaf frames (3) fixedly connected. The A door (5) and the B door (14) are also internally fixedly installed with a plurality of transverse reinforcing square tubes (6) and longitudinal reinforcing square tubes (7) that are vertically fixedly connected to each other. The transverse reinforcing square tubes (6) are fixedly connected to the rotating arm (10). The A door (5) and the B door (14) are externally fixedly installed with sealing door panels (18). The B door (14) is also provided with a safety door (13).

2. The air duct damper of the underground mine fan room according to claim 1, characterized in that: A positioning plate (11) is fixedly mounted on the longitudinal door leaf frame (4) where the A door (5) and the B door (14) are in contact, and the positioning plate (11) is provided with a plurality of positioning holes (11-1) at relatively corresponding positions, and positioning pins (19) can be mounted on the positioning holes (11-1).

3. The air duct damper of the underground mine fan room according to claim 1, characterized in that: The safety door (13) is composed of two longitudinal safety door leaf frames (13-2) and two transverse safety door leaf frames (13-1) which are fixedly connected, and a safety door reinforcing square tube (13-4) is fixedly connected between the longitudinal safety door leaf frames (13-2); the longitudinal safety door leaf frame (13-2) of the safety door (13) is rotatably connected to the longitudinal door leaf frame (4) of the B door (14) via a safety door hinge (13-3), and a safety door sealing door panel (13-10) is fixedly installed on the outside of the safety door (13).

4. The air duct damper of the underground mine fan room as claimed in claim 3, characterized in that: A door lock fixing square steel (13-5) is fixedly mounted on the safety door reinforcement square tube (13-4); a through hole is formed in the door lock fixing square steel (13-5); a rotatable safety door switch rotating shaft (13-6) is mounted in the through hole; a rotating handle (13-7) is fixedly mounted on the safety door switch rotating shaft (13-6); a switch lock piece (13-8) is also fixedly mounted on the safety door switch rotating shaft (13-6); when the switch lock piece (13-8) is horizontal, its length exceeds the side edge of the safety door (13) and overlaps with door B; and a lock piece limiting round steel (13-9) for limiting the switch lock piece (13-8) is also fixedly mounted on the longitudinal safety door leaf frame (13-2).

5. The air duct damper of the underground mine fan room according to claim 1, characterized in that: Two upper and lower latch support rings (16) are fixedly mounted on the lower outer end of the A door (5); a positioning latch (15) is mounted on the latch support ring (16); a limiting ring (15-1) for limiting position is fixedly mounted on the positioning latch (15); and a hole for inserting the positioning latch (15) is provided on the lower fixed beam (1).

6. The air duct damper of the underground mine fan room according to claim 1, characterized in that: A wind deflector (17) is fixedly mounted on the outside of the door frame portion, the height of the wind deflector exceeding the inner edge of the door frame portion and overlapping the door leaf portion.

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