Intelligent local ventilation device for mine

Abstract

The utility model relates to the technical field of coal mine equipment, and discloses an intelligent local ventilation device for a mine, a fan support is fixedly installed on the inner wall of a machine shell, an axial flow fan and fan blades are fixedly installed on the top of the fan support, a flange pipe is detachably installed on the side face of the machine shell through bolts, and the fan blades are fixedly installed on the flange pipe. A protective net is fixedly installed on the inner wall of the flange pipe, the axis of the protective net is rotationally connected with a rotating shaft, cleaning plates are fixedly installed at the two ends of the rotating shaft correspondingly, brush bodies are clamped to the back faces of the cleaning plates, a motor drives a gear ring and a rotating ring to rotate through a gear, and rotation is conducted on the outer side of the flange pipe through a sliding block. And meanwhile, the cleaning plate can rotate, the brush bodies are arranged on the two sides of the protective net, the rotating brush bodies can brush the two faces of the protective net, dust adhering to the two faces of the protective net can be brushed away, and therefore it is guaranteed that the protective net is automatically cleaned under the condition that the axial flow fan and the fan are not shut down.

Description

Technical Field

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

[0002] In order to input fresh air into the mine, mine ventilation needs to discharge the air underground to form a circulation flow. However, the air underground contains a large amount of coarse and fine dust. When discharged directly, the dust will be adsorbed on the protective net. If it is not cleaned for a long time, the protective net on the air outlet will inevitably be blocked. When the fan is in operation, there is a risk of manual cleaning, which may cause hand injuries. Therefore, a mine ventilation equipment that can automatically clean the dust on the protective net during operation is proposed to solve the problem. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides an intelligent local ventilation device for mines, which has the advantage of cleaning the protective net at the air outlet of the fan without stopping the machine, thus solving the above-mentioned problems.

[0005] (II) Technical solution

[0006] In order to achieve the purpose of cleaning the protective net of the fan tuyere without stopping the machine, the utility model provides the following technical solutions: an intelligent local ventilation device for a mine, comprising a casing, a base is fixedly installed at the bottom of the casing, a fan bracket is fixedly installed on the inner wall of the casing, an axial fan and a fan blade are fixedly installed on the top of the fan bracket, a flange pipe is detachably installed on the side of the casing by bolts, a protective net is fixedly installed on the inner wall of the flange pipe, the axis of the protective net is rotatably connected with a rotating shaft, cleaning plates are fixedly installed at both ends of the rotating shaft, a brush body is clamped on the back of the cleaning plate, a slider is fixedly installed at one end of the cleaning plate away from the rotating shaft, an arc-shaped opening corresponding to the slider is opened on the surface of the flange pipe, a swivel is fixedly installed on the outer side of the slider, a gear ring is fixedly installed on the outer surface of the swivel, and limit plates are fixedly installed on both ends of the gear ring, a pressure sensor is embedded on the surface of the limit plate, a gear is meshed on the side of the gear ring, and the axis of the gear is fixedly connected to the output end of the motor.

[0007] Preferably, the axial flow fan and its blades, the housing and the rotating shaft are located at the same center of a circle, and both ends of the rotating shaft penetrate through and extend to the outside of the protective net.

[0008] Preferably, the pressure sensor is signal-connected to a PLC controller, and the PLC controller is electrically connected to the motor and the axial flow fan.

[0009] Preferably, there are four cleaning plates, which are arranged in groups of two and are symmetrically distributed on both sides of the protective net.

[0010] Preferably, there are two arc-shaped openings, which are symmetrically arranged in the upper and lower parts, and the slider is slidably connected in the arc-shaped openings.

[0011] Preferably, the swivel is rotatably mounted on the outer side of the flange pipe, and the width of the swivel is greater than the opening width of the arc-shaped opening.

[0012] Preferably, the gear ring is semicircular and is located above the rotating ring, and the motor is fixedly connected to the outer side of the flange pipe.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides an intelligent local ventilation device for mines, which has the following beneficial effects:

[0015] 1. The intelligent local ventilation device of the mine uses a PLC controller to ensure the operation of the motor. The motor rotates with the gear ring and the swivel through the gear. The rotation rotates on the outside of the flange pipe through the slider. At the same time, the cleaning plate will also rotate. The brush body is set on both sides of the protective net. The rotating brush body will brush both sides of the protective net and can brush off the dust sticking to both sides of the protective net, thereby ensuring that the axial flow fan and the fan do not stop and the purpose of automatically cleaning the protective net is achieved.

[0016] 2. The intelligent local ventilation device of the mine drives the rotating ring and the gear ring to rotate through the motor, and the limit plates are fixedly installed at both ends of the gear ring. The surface of the limit plate is embedded with a pressure sensor. When the limit plate is in contact with the gear during rotation, the pressure sensor is stressed, and the PLC controller controls the motor to stop or reverse, thereby realizing the reciprocating rotation of the cleaning plate and the brush body, thereby realizing the cyclic reciprocating brushing of the protective net. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a side view;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a side view;

[0019] Figure 3 It is a schematic diagram of the cutaway three-dimensional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the cutaway three-dimensional structure of the flange pipe of the utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the flange pipe of the utility model;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the flange pipe of the utility model.

[0023] In the figure: 1- housing, 2- base, 3- axial flow fan and fan blades, 4- fan bracket, 5- flange pipe, 6- protective net, 7- rotating shaft, 8- cleaning plate, 9- brush body, 10- slider, 11- arc mouth, 12- swivel, 13- gear ring, 14- limit plate, 15- gear, 16- motor. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-3 A mine intelligent local ventilation device comprises a casing 1, a base 2 is fixedly installed at the bottom of the casing 1, a fan bracket 4 is fixedly installed on the inner wall of the casing 1, an axial flow fan and fan blades 3 are fixedly installed on the top of the fan bracket 4, a flange pipe 5 is detachably installed on the side of the casing 1 by bolts, and a protective net 6 is fixedly installed on the inner wall of the flange pipe 5 to prevent foreign objects from accidentally touching the fan blades; the protective net 6 is rotatably connected to a rotating shaft 7, the axial flow fan and fan blades 3, the casing 1 and the rotating shaft 7 are at the same center of a circle, and both ends of the rotating shaft 7 penetrate and extend to the outside of the protective net 6.

[0026] See also Figure 4-6 , cleaning plates 8 are fixedly installed at both ends of the rotating shaft 7. There are four cleaning plates 8, which are arranged in groups of two and symmetrically distributed on both sides of the protective net 6, so that both sides of the protective net 6 can be cleaned simultaneously; the rotation angle range of the cleaning plate 8 is 5-175°; a brush body 9 is clamped on the back of the cleaning plate 8, and the brush body 9 can be a wire brush, a plastic brush or a rubber brush; a slider 10 is fixedly installed at one end of the cleaning plate 8 away from the rotating shaft 7, and an arc-shaped opening 11 corresponding to the slider 10 is opened on the surface of the flange pipe 5. There are two arc-shaped openings 11, which are symmetrically arranged up and down, and the slider 10 is slidably connected in the arc-shaped opening 11. A swivel 12 is fixedly installed on the outside of the slider 10, and the swivel 12 is rotatably mounted on the outside of the flange pipe 5, and the width of the swivel 12 is greater than the opening width of the arc-shaped opening 11.

[0027] See also Figure 4-6The outer surface of the rotating ring 12 is fixedly mounted with a gear ring 13, which is semicircular and located above the rotating ring 12. Limit plates 14 are fixedly mounted at both ends of the gear ring 13. A pressure sensor is embedded on the surface of the limit plate 14. The pressure sensor is connected to the PLC controller signal, and the PLC controller is electrically connected to the motor 16 and the axial flow fan. A gear 15 is meshed on the side of the gear ring 13, and the axis of the gear 15 is fixedly connected to the output end of the motor 16, and the motor 16 is fixedly connected to the outer side of the flange pipe 5.

[0028] Working principle: When in use, the operation of the motor 16 is ensured by the PLC controller. The motor 16 rotates with the gear ring 13 and the swivel 12 through the gear 15. The rotation rotates on the outside of the flange tube 5 through the slider 10. At the same time, the cleaning plate 8 also rotates, and the brush body 9 is arranged on both sides of the protective net 6. The rotating brush body 9 will brush both sides of the protective net 6, and can brush off the dust sticking to both sides of the protective net 6, thereby ensuring that the axial flow fan and the fan 3 do not stop, and the purpose of automatically cleaning the protective net 6 is achieved.

[0029] The motor 16 drives the swivel 12 and the ring gear 13 to rotate, and the limit plates 14 are fixedly installed at both ends of the ring gear 13. The surface of the limit plate 14 is embedded with a pressure sensor. When the limit plate 14 is in contact with the gear 15 during rotation, the pressure sensor is stressed, and the PLC controller controls the motor 16 to stop or reverse, thereby realizing the reciprocating rotation of the cleaning plate 8 and the brush body 9, thereby realizing the cyclic reciprocating brushing of the protective net 6.

[0030] 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 mine intelligent local ventilation device, comprising a housing (1), a base (2) being fixedly mounted on the bottom of the housing (1), characterized in that: A fan bracket (4) is fixedly mounted on the inner wall of the casing (1), an axial flow fan and a fan blade (3) are fixedly mounted on the top of the fan bracket (4), a flange pipe (5) is detachably mounted on the side of the casing (1) by means of bolts, a protective net (6) is fixedly mounted on the inner wall of the flange pipe (5), the axis of the protective net (6) is rotatably connected to a rotating shaft (7), cleaning plates (8) are fixedly mounted on both ends of the rotating shaft (7), a brush body (9) is clamped on the back of the cleaning plate (8), and one end of the cleaning plate (8) away from the rotating shaft (7) is fixedly mounted. A slider (10) is fixedly installed, and an arc-shaped opening (11) corresponding to the slider (10) is opened on the surface of the flange tube (5). A swivel (12) is fixedly installed on the outer side of the slider (10), and a gear ring (13) is fixedly installed on the outer surface of the swivel (12). Limit plates (14) are fixedly installed at both ends of the gear ring (13), and a pressure sensor is embedded on the surface of the limit plate (14). A gear (15) is meshed on the side of the gear ring (13), and the axis of the gear (15) is fixedly connected to the output end of the motor (16).

2. The intelligent local ventilation device for mines according to claim 1, characterized in that: The axial flow fan and the fan blades (3), the housing (1) and the rotating shaft (7) are located at the same center of a circle, and both ends of the rotating shaft (7) penetrate and extend to the outside of the protective net (6).

3. The intelligent local ventilation device for mines according to claim 1, characterized in that: The pressure sensor is signal-connected to a PLC controller, and the PLC controller is electrically connected to a motor (16) and an axial flow fan.

4. The intelligent local ventilation device for mines according to claim 1, characterized in that: There are four cleaning plates (8), which are arranged in groups of two and are symmetrically distributed on both sides of the protective net (6).

5. The intelligent local ventilation device for mines according to claim 1, characterized in that: There are two arc-shaped openings (11), which are symmetrically arranged in an upper and lower manner, and the sliding block (10) is slidably connected in the arc-shaped openings (11).

6. The intelligent local ventilation device for mines according to claim 1, characterized in that: The swivel ring (12) is rotatably sleeved on the outer side of the flange pipe (5), and the width of the swivel ring (12) is greater than the opening width of the arc-shaped opening (11).

7. The intelligent local ventilation device for mines according to claim 1, characterized in that: The gear ring (13) is semicircular and is located above the rotating ring (12). The motor (16) is fixedly connected to the outer side of the flange pipe (5).

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