Intelligent local ventilation device for mine

Abstract

The utility model relates to the technical field of mine ventilation, and discloses a mine intelligent local ventilation device which comprises a base, a machine shell is fixedly installed on the top of the base, grid nets are detachably installed at the front end and the rear end of the machine shell respectively, a support is detachably installed on the inner wall of the machine shell, a motor is fixedly installed in the support, and the motor is fixedly installed on the base. Fan blades are detachably installed at the output end of the motor, and a slippage assembly is arranged between the fan blades and the output end of the motor. According to the intelligent local ventilation device for the mine, if fan blades are entangled by sundries, the output end of a motor drives a lock column to continuously rotate, a lock groove with a semicircular arc surface is formed outside the lock column, the lock groove extrudes a lock head, the lock head shrinks towards a threaded hole, a spring is compressed, then the lock head and the lock groove start to slip, and the fan blades are locked. And meanwhile, the output end of the motor and the fan blades can slip off, so that the motor is prevented from being forcibly stopped to be damaged, and the service life of the whole ventilation fan is prolonged.

Description

Technical Field

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

[0002] Mine ventilation refers to the process of injecting fresh air into the mine to increase the oxygen concentration, dilute and remove toxic and harmful gases and dust in the mine. The basic tasks of mine ventilation are: to supply enough fresh air underground to meet the oxygen needs of personnel; to dilute harmful gases and dust underground to ensure safe production; to regulate the underground climate and create a good working environment.

[0003] In practice, a long pipeline is set up in the mine, and an axial flow fan is installed at the end of the pipeline. The fan is used to transport the air in the mine, and the fan blades are driven by a motor to rotate. However, during operation, the fan blades may accidentally get entangled with debris, causing the fan blades to be stuck. At the same time, the motor will continue to rotate, which will cause the motor to overload and burn out, affecting the service life of the motor. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] 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 overload slippage protection and solves the above-mentioned problems.

[0006] (II) Technical solution

[0007] In order to achieve the purpose of the above-mentioned overload slippage protection, the utility model provides the following technical solutions: an intelligent local ventilation device for mines, comprising a base, a casing is fixedly installed on the top of the base, and a grid is detachably installed at the front and rear ends of the casing, a bracket is detachably installed on the inner wall of the casing, a motor is fixedly installed inside the bracket, a fan blade is detachably installed on the output end of the motor, a slippage assembly is arranged between the fan blade and the output end of the motor, an annular tube is fixedly installed on the inner wall of the casing and behind the fan blade, an extension tube is fixedly installed on one side of the annular tube, and a nozzle is fixedly installed on the other side of the annular tube.

[0008] Preferably, the sliding assembly includes a locking ring and a locking column, a threaded hole is provided on the outer surface of the locking ring, a threaded column is connected to the internal thread of the threaded hole, a cross groove is provided on one side of the threaded column, a spring is provided on the other side of the threaded column, a locking head is provided on the other end of the spring, and a locking groove opposite to the locking head is provided on the outer surface of the locking column.

[0009] Preferably, the locking ring is fixedly connected to the side of the fan blade via a shaft, the side of the locking column is fixedly connected to the output end of the motor, and the locking column is inserted into the interior of the locking ring.

[0010] Preferably, there are four lock heads which are arranged in a ring shape with equal intervals, and the ends of the lock heads are hemispherical, and there are four lock grooves which are semicircular.

[0011] Preferably, the input end of the motor is connected to a PLC controller signal, the other end of the extension tube is connected to a water pump, and the water pump is connected to a PLC controller signal.

[0012] Preferably, the locking column is slidably engaged with the locking ring via a threaded column, a spring, a locking head and a locking groove.

[0013] Preferably, the locking head and the surface opposite to the threaded column are both provided with a spring groove corresponding to the spring.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides an intelligent local ventilation device for mines, which has the following beneficial effects:

[0016] The intelligent local ventilation device for mines is designed so that if the fan blades are entangled by debris, the motor output end will continue to rotate with the lock column. The outer side of the lock column is provided with a semicircular lock groove, which will squeeze the lock head. The lock head will shrink into the threaded hole, and the spring will be compressed, and then the lock head and the lock groove will begin to slip. Similarly, the motor output end and the fan blades will also slip, thereby protecting the motor from being damaged by forced stopping, and then increasing the service life of the entire ventilation fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the cutaway structure of the utility model;

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

[0020] Figure 4 This is a schematic diagram of the structure of the slip-off assembly of the utility model;

[0021] Figure 5 This is a schematic diagram of the exploded structure of the slide assembly of the utility model;

[0022] Figure 6 This is a schematic diagram of the exploded structure of the slide assembly of the utility model;

[0023] Figure 7 This is a schematic diagram of the exploded structure of the threaded column, lock head and spring of the utility model.

[0024] In the figure: 1. base; 2. casing; 3. grid; 4. bracket; 5. motor; 6. fan blades; 7. slide assembly; 8. ring tube; 9. extension tube; 10. nozzle; 71. locking ring; 72. locking column; 73. threaded hole; 74. threaded column; 75. cross slot; 76. spring; 77. locking head; 78. lock slot; 79. spring slot. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1-4 The intelligent local ventilation device for mines includes a base 1. Through holes are provided on both sides of the base 1, and the base 1 can be detachably installed with an external bracket through bolts and nuts. A casing 2 is fixedly installed on the top of the base 1, and a grid 3 is detachably installed at the front and rear ends of the casing 2 to intercept debris; a bracket 4 is detachably installed on the inner wall of the casing 2, and a motor 5 is fixedly installed inside the bracket 4. A fan blade 6 is detachably installed at the output end of the motor 5, and the input end of the motor 5 is connected to a PLC controller signal, and the fan blade 6 can be driven by the motor 5 to rotate at a high speed.

[0027] See also Figure 1-4 A slip assembly 7 is provided between the fan blade 6 and the output end of the motor 5. A ring pipe 8 is fixedly installed on the inner wall of the housing 2 and located behind the fan blade 6. An extension pipe 9 is fixedly installed on one side of the ring pipe 8, and a nozzle 10 is fixedly installed on the other side of the ring pipe 8. The other end of the extension pipe 9 is connected to a water pump, and the water pump is connected to the PLC controller signal. The water pump can draw water from the outside and spray it out from the nozzle 10, which can reduce dust and temperature in the channel.

[0028] See also Figure 5-7 The sliding assembly 7 includes a locking ring 71 and a locking column 72. The locking column 72 is inserted into the interior of the locking ring 71. The locking ring 71 is fixedly connected to the side of the fan blade 6 through a shaft. The side of the locking column 72 is fixedly connected to the output end of the motor 5. A threaded hole 73 is provided on the outer surface of the locking ring 71. A threaded column 74 is threadedly connected to the inner surface of the threaded hole 73. A cross groove 75 is provided on one side of the threaded column 74. The threaded column 74 can be driven to move forward in the threaded hole 73 through the cross groove 75, and then the threaded column 74 squeezes the spring 76, so that the locking head 77 is pressed more tightly.

[0029] See also Figure 5-7A spring 76 is disposed on the other side of the threaded column 74, and a lock head 77 is disposed on the other end of the spring 76. There are four lock heads 77, which are arranged in a ring with equal spacing, and the end of the lock head 77 is hemispherical. The outer surface of the lock column 72 is provided with a lock groove 78 opposite to the lock head 77. There are four lock grooves 78 in a semicircular shape. The lock column 72 is slidably engaged with the lock ring 71 through the threaded column 74, the spring 76, the lock head 77 and the lock groove 78. The lock head 77 and the threaded column 74 are both provided with a spring groove 79 corresponding to the spring 76 to facilitate the installation of the spring 76.

[0030] Working principle: When in use, if the fan blades 6 are entangled by debris, the output end of the motor 5 will continue to rotate with the lock column 72. The outer side of the lock column 72 is provided with a semicircular lock groove 78, and the lock groove 78 will squeeze the lock head 77. The lock head 77 will shrink into the threaded hole 73, and the spring 76 will be compressed, and then the lock head 77 and the lock groove 78 will begin to slip. Similarly, the output end of the motor 5 and the fan blades 6 will also slip, thereby protecting the motor 5 from being forced to stop and damaged, thereby increasing the service life of the entire ventilation fan.

[0031] Once the debris is cleared, the fan blades 6 are no longer restricted, and the lock head 77 and the lock slot 78 no longer slip. Similarly, the spring 76 will push the lock head 77 to press against the lock slot 78, and the lock ring 71 and the lock column 72 are locked and connected. Then the output end of the motor 5 is connected to the fan blades 6 again, and the motor 5 can continue to rotate with the fan blades 6.

[0032] 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. An intelligent local ventilation device for a mine, comprising a base (1), a housing (2) fixedly mounted on the top of the base (1), and a grid (3) detachably mounted on the front and rear ends of the housing (2), characterized in that: A bracket (4) is detachably mounted on the inner wall of the housing (2), a motor (5) is fixedly mounted inside the bracket (4), a fan blade (6) is detachably mounted on the output end of the motor (5), a slip assembly (7) is provided between the fan blade (6) and the output end of the motor (5), an annular tube (8) is fixedly mounted on the inner wall of the housing (2) and located behind the fan blade (6), an extension tube (9) is fixedly mounted on one side of the annular tube (8), and a nozzle (10) is fixedly mounted on the other side of the annular tube (8); The slip assembly (7) comprises a locking ring (71) and a locking column (72); a threaded hole (73) is provided on the outer surface of the locking ring (71); a threaded column (74) is connected to the inner thread of the threaded hole (73); a cross groove (75) is provided on one side of the threaded column (74); a spring (76) is provided on the other side of the threaded column (74); a locking head (77) is provided on the other end of the spring (76); a locking groove (78) is provided on the outer surface of the locking column (72) and is opposite to the locking head (77); and a spring groove (79) corresponding to the spring (76) is provided on the opposite surfaces of the locking head (77) and the threaded column (74).

2. The intelligent local ventilation device for mines according to claim 1, characterized in that: The locking ring (71) is fixedly connected to the side of the fan blade (6) via a shaft, the side of the locking column (72) is fixedly connected to the output end of the motor (5), and the locking column (72) is inserted into the interior of the locking ring (71).

3. The intelligent local ventilation device for mines according to claim 1, characterized in that: The number of the locking heads (77) is four and they are arranged in a ring shape with equal spacing, and the end of the locking head (77) is hemispherical, and the number of the locking grooves (78) is four and they are semicircular.

4. The intelligent local ventilation device for mines according to claim 1, characterized in that: The input end of the motor (5) is connected to a PLC controller signal, the other end of the extension tube (9) is connected to a water pump, and the water pump is connected to a PLC controller signal.

5. The intelligent local ventilation device for mines according to claim 1, characterized in that: The locking column (72) is slidably engaged with the locking ring (71) via a threaded column (74), a spring (76), a locking head (77) and a locking groove (78).

Images